Composite

Composite Vessels Specifications

The non-corrosive, Material of construction Design parameters – NSF

Part No. Description Height w/ base Height w/o base Capacity Cubic Top Bottom Top Bottom Base Ship
cost-effective solution Inner shell material: Safety factor: Inches / mm Inches / mm Gallons / Liters Feet Open Open Side Side Weight

18" Diameter
Polyethylene 4:1 (Minimum burst at 600 psi) 30948 18 x 65 67.1 / 1704 66.5 / 1689 62.4 / 236 8.3 4"- 8" UN N/A N/A N/A standard 67.7
for commercial /
Cycle test: 31343 18 x 65 79.8 / 2027 63.3 / 1608 62.4 / 236 8.3 4"- 8" UN 4"- 8" UN N/A N/A tripod 79.7
industrial water
Operating parameters 100,000 cycles without leakage 31693 18 x 65 84.4 / 2144 70.0 / 1778 62.4 / 236 8.3 6" FLG 6" FLG N/A N/A tripod 79.7
treatment and storage.
Maximum operating pressure: 150 psi 30949 21 x 36 41.7 / 1059 38.2 / 970 45.3 / 171 6.1 2.5" NPSM N/A N/A N/A standard 46

21" Diameter
Structural Composite pressure 30950 21 x 36 41.7 / 1059 38.2 / 970 45.3 / 171 6.1 4"- 8" UN N/A N/A N/A standard 46
Maximum operating temperature: 150° F Design parameters – ASME
31573 21 x 36 54.5 / 1386 38.2 / 970 45.3 / 171 6.1 4"- 8" UN 4"- 8" UN N/A N/A tripod 46
vessels offer composite fiberglass
Safety factor:
30953 21 x 62 66.9 / 1699 62.6 / 1590 82.4 / 312 11.0 4"- 8" UN N/A N/A N/A standard 90
construction for outstanding 5:1 Top/bottom flange
Design parameters – Pentair (Minimum burst at 750 psi) 30954 21 x 62 79.0 / 2006 62.6 / 1590 82.4 / 312 11.0 4"- 8" UN 4"- 8" UN N/A N/A *tripod 90
performance and durability in
6:1 Side flange (Minimum burst at 900 psi) 31043 24 x 38 42.0 / 1059 38.5 / 978 61.0 / 231 8.2 4"- 8" UN N/A N/A N/A standard 46
harsh chemical environments. Safety factor:
4:1 (Minimum burst at 600 psi) Cycle test: 31053 24 x 50 55.6 / 1412 51.5 / 1308 83.5 / 316 11.2 4"- 8" UN N/A N/A N/A standard 83.5
With capacities up to 1600 gallons
33,000 cycles without leakage 31611 24 x 50 68.4 / 1738 52.9 / 1344 83.5 / 316 11.2 4"- 8" UN 4"- 8" UN N/A N/A *tripod 83.5
Cycle test:
and a variety of options, we can (Top/bottom flange)
250,000 cycles without leakage 32049 24 x 65 64 / 1626 60.5 / 1537 100 / 378 13.4 4"- 8" UN N/A N/A N/A standard 100
tailor a vessel to meet your needs. 100,000 cycles without leakage

24" Diameter
(Side flange) 32481 24 x 65 75.7 / 1924 60.0 / 1524 100 / 378 13.4 4"- 8" UN 4"- 8" UN N/A N/A *tripod 100
All Structural Composite vessels 32129 24 x 65 66.5 / 1689 62.6 / 1590 100 / 378 13.4 6" FLG N/A N/A N/A standard 100
are warranted for 5 years. 32139 24 x 65 79.0 / 2008 65.0 / 1651 100 / 378 13.4 6" FLG 6" FLG N/A N/A tripod 100

31153 24 x 72 74.1 / 1882 70.6 / 1793 119 / 450 15.9 4"- 8" UN N/A N/A N/A standard 139

31154 24 x 72 84.5 / 2147 69.0 / 1753 119 / 450 15.9 4"- 8" UN 4"- 8" UN N/A N/A *tripod 139

31155 24 x 72 76.8 / 1951 73.3 / 1862 119 / 450 15.9 6" FLG N/A N/A N/A standard 149

31157 24 x 72 87.9 / 2232 74.5 / 1892 119 / 450 15.9 6" FLG 6" FLG N/A N/A tripod 149

30" Diameter
31161 30 x 72 85.9 / 2182 70.2 / 1783 187 / 708 25.0 4"- 8" UN 4"- 8" UN N/A N/A *tripod 234

31162 30 x 72 80.8 / 2052 73.0 / 1854 187 / 708 25.0 6" FLG N/A N/A N/A standard 240
All Composite tanks are warranted to be free from 31163 30 x 72 88.3 / 2242 74.7 / 1897 187 / 708 25.0 6" FLG 6" FLG N/A N/A tripod 240
defects in materials and workmanship for a period
of 5 years from the date of manufacture if the ves- 31417 36 x 57 70.5 / 1791 60.0 / 1524 205 / 776 27.4 6" FLG N/A N/A N/A standard 160
sel is operated within the prescribed pressure and
temperature ratings stated on the tank label. 31418 36 x 57 77.0 / 1956 63.0 / 1600 205 / 776 27.4 6" FLG 6" FLG N/A N/A tripod 160

36" Diameter
31523 36 x 72 86.2 / 2190 70.5 / 1791 264 / 999 35.3 4"- 8" UN 4"- 8" UN N/A N/A *tripod 292
Not covered by this warranty is damage resulting
from freezing, external impact, chemical attack 31214 36 x 72 83.0 / 2108 73.5 / 1867 264 / 999 35.3 6" FLG N/A N/A N/A standard 292
from liquid and gasses, exposure to vacuum, natu-
ral disasters, or other applications of the product 31217 36 x 72 89.0 / 2261 75.0 / 1905 264 / 999 35.3 6" FLG 6" FLG N/A N/A tripod 292
beyond residential water softeners and filters.
31712 36 x 72 89.0 / 2261 75.0 / 1905 264 / 999 35.3 6" FLG 6" FLG 4" FLG 4" FLG tripod 292
31272 42 x 72 94.5 / 2401 71.0 / 1803 345 / 1306 46.1 6" FLG N/A N/A N/A tripod 678

42" Dia.
31276 42 x 72 94.6 / 2404 73.0 / 1854 345 / 1306 46.1 6" FLG 6" FLG N/A N/A tripod 678

See Factory 42 x 72 72.0 / 1828 71.0 / 1803 345 / 1306 46.1 6" FLG N/A N/A N/A short SMC xxx

*Measurements are subject to change without notice and are for reference only.

Color Options: AL - Almond BL - Blue BK - Black GR - Gray NA - Natural

 Composite
Composite Vessels Specifications

The non-corrosive, Material of construction Design parameters – NSF

Part No. Description Height w/ base Height w/o base Capacity Cubic Top Bottom Top Bottom Base Ship
cost-effective solution Inner shell material: Safety factor: Inches / mm Inches / mm Gallons / Liters Feet Open Open Side Side Weight

18" Diameter
Polyethylene 4:1 (Minimum burst at 600 psi) 30948 18 x 65 67.1 / 1704 66.5 / 1689 62.4 / 236 8.3 4"- 8" UN N/A N/A N/A standard 67.7
for commercial /
Cycle test: 31343 18 x 65 79.8 / 2027 63.3 / 1608 62.4 / 236 8.3 4"- 8" UN 4"- 8" UN N/A N/A tripod 79.7
industrial water
Operating parameters 100,000 cycles without leakage 31693 18 x 65 84.4 / 2144 70.0 / 1778 62.4 / 236 8.3 6" FLG 6" FLG N/A N/A tripod 79.7
treatment and storage.
Maximum operating pressure: 150 psi 30949 21 x 36 41.7 / 1059 38.2 / 970 45.3 / 171 6.1 2.5" NPSM N/A N/A N/A standard 46

21" Diameter
Structural Composite pressure 30950 21 x 36 41.7 / 1059 38.2 / 970 45.3 / 171 6.1 4"- 8" UN N/A N/A N/A standard 46
Maximum operating temperature: 150° F Design parameters – ASME
31573 21 x 36 54.5 / 1386 38.2 / 970 45.3 / 171 6.1 4"- 8" UN 4"- 8" UN N/A N/A tripod 46
vessels offer composite fiberglass
Safety factor:
30953 21 x 62 66.9 / 1699 62.6 / 1590 82.4 / 312 11.0 4"- 8" UN N/A N/A N/A standard 90
construction for outstanding 5:1 Top/bottom flange
Design parameters – Pentair (Minimum burst at 750 psi) 30954 21 x 62 79.0 / 2006 62.6 / 1590 82.4 / 312 11.0 4"- 8" UN 4"- 8" UN N/A N/A *tripod 90
performance and durability in
6:1 Side flange (Minimum burst at 900 psi) 31043 24 x 38 42.0 / 1059 38.5 / 978 61.0 / 231 8.2 4"- 8" UN N/A N/A N/A standard 46
harsh chemical environments. Safety factor:
4:1 (Minimum burst at 600 psi) Cycle test: 31053 24 x 50 55.6 / 1412 51.5 / 1308 83.5 / 316 11.2 4"- 8" UN N/A N/A N/A standard 83.5
With capacities up to 1600 gallons
33,000 cycles without leakage 31611 24 x 50 68.4 / 1738 52.9 / 1344 83.5 / 316 11.2 4"- 8" UN 4"- 8" UN N/A N/A *tripod 83.5
Cycle test:
and a variety of options, we can (Top/bottom flange)
250,000 cycles without leakage 32049 24 x 65 64 / 1626 60.5 / 1537 100 / 378 13.4 4"- 8" UN N/A N/A N/A standard 100
tailor a vessel to meet your needs. 100,000 cycles without leakage

24" Diameter
(Side flange) 32481 24 x 65 75.7 / 1924 60.0 / 1524 100 / 378 13.4 4"- 8" UN 4"- 8" UN N/A N/A *tripod 100
All Structural Composite vessels 32129 24 x 65 66.5 / 1689 62.6 / 1590 100 / 378 13.4 6" FLG N/A N/A N/A standard 100
are warranted for 5 years. 32139 24 x 65 79.0 / 2008 65.0 / 1651 100 / 378 13.4 6" FLG 6" FLG N/A N/A tripod 100

31153 24 x 72 74.1 / 1882 70.6 / 1793 119 / 450 15.9 4"- 8" UN N/A N/A N/A standard 139

31154 24 x 72 84.5 / 2147 69.0 / 1753 119 / 450 15.9 4"- 8" UN 4"- 8" UN N/A N/A *tripod 139

31155 24 x 72 76.8 / 1951 73.3 / 1862 119 / 450 15.9 6" FLG N/A N/A N/A standard 149

31157 24 x 72 88.9 / 2258 74.5 / 1892 119 / 450 15.9 6" FLG 6" FLG N/A N/A tripod 149

30" Diameter
31161 30 x 72 85.9 / 2182 70.2 / 1783 187 / 708 25.0 4"- 8" UN 4"- 8" UN N/A N/A *tripod 234

31162 30 x 72 80.8 / 2052 73.0 / 1854 187 / 708 25.0 6" FLG N/A N/A N/A standard 240
All Composite tanks are warranted to be free from 31163 30 x 72 89.0 / 2260 74.7 / 1897 187 / 708 25.0 6" FLG 6" FLG N/A N/A tripod 240
defects in materials and workmanship for a period
of 5 years from the date of manufacture if the ves- 31417 36 x 57 70.5 / 1791 60.0 / 1524 205 / 776 27.4 6" FLG N/A N/A N/A standard 160
sel is operated within the prescribed pressure and
temperature ratings stated on the tank label. 31418 36 x 57 77.4 / 1966 63.0 / 1600 205 / 776 27.4 6" FLG 6" FLG N/A N/A tripod 160

36" Diameter
31523 36 x 72 86.2 / 2190 70.5 / 1791 264 / 999 35.3 4"- 8" UN 4"- 8" UN N/A N/A *tripod 292
Not covered by this warranty is damage resulting
from freezing, external impact, chemical attack 31214 36 x 72 83.0 / 2108 73.5 / 1867 264 / 999 35.3 6" FLG N/A N/A N/A standard 292
from liquid and gasses, exposure to vacuum, natu-
ral disasters, or other applications of the product 31217 36 x 72 90.3 / 2294 75.0 / 1905 264 / 999 35.3 6" FLG 6" FLG N/A N/A tripod 292
beyond residential water softeners and filters.
31712 36 x 72 90.3 / 2294 75.0 / 1905 264 / 999 35.3 6" FLG 6" FLG 4" FLG 4" FLG tripod 292
31272 42 x 72 94.5 / 2401 71.0 / 1803 345 / 1306 46.1 6" FLG N/A N/A N/A tripod 678

42" Dia.
31276 42 x 72 94.6 / 2404 73.0 / 1854 345 / 1306 46.1 6" FLG 6" FLG N/A N/A tripod 678

See Factory 42 x 72 72.0 / 1828 71.0 / 1803 345 / 1306 46.1 6" FLG N/A N/A N/A short SMC xxx

*Measurements are subject to change without notice and are for reference only.

Color Options: AL - Almond BL - Blue BK - Black GR - Gray NA - Natural

 Composite
Composite Vessels Specifications

Part No. Description Height w/ base Height w/o base Capacity Cubic Top Bottom Top Bottom Base Ship
Inches / mm Inches / mm Gallons / Liters Feet Open Open Side Side Weight Dome Volume (gallons)
31281 48 x 72 92.1 / 2339 76.0 / 1930 463 / 1753 61.9 6" FLG N/A N/A N/A tripod 780 and Straight Wall Gallon per Inch
48" Diameter

31285 48 x 72 92.1 / 2339 77.0 / 1955 463 / 1753 61.9 6" FLG 6" FLG N/A N/A tripod 780
Nominal Diameter
31647 48 x 72 93.8 / 2383 78.0 / 1981 463 / 1753 61.9 16" MWY 6" FLG N/A N/A tripod 780
D Gallons* Gallon / Inch A
31283 48 x 72 96.1 / 2441 80.8 / 2052 463 / 1753 61.9 6" FLG 6" FLG 4" FLG 4" FLG tripod 780 (inches) (One Dome) (Approx.) (Sq. Feet) GAL / IN
31432 48 x 72 97.5 / 2477 81.7 / 2075 463 / 1753 61.9 16" MWY 6" FLG 4" FLG 4" FLG tripod 780 12 1.0 0.5 0.7
D A
31390 63 x 67 79.5 / 2324 67.0 / 1702 600 / 2271 80.2 6" FLG 6" FLG N/A N/A tripod 900 13 1.4 0.5 0.9

Call Factory 63 x 67 79.5 / 2324 67.0 / 1702 600 / 2271 80.2 10" FLG 6" FLG N/A N/A tripod * 14 1.7 0.6 1.1

31290 63 x 67 80.3 / 2344 67.8 / 1722 600 / 2271 80.2 16" MWY 6" FLG N/A N/A tripod 900 16 2.7 0.8 1.3

32008 63 x 67 80.3 / 2344 67.8 / 1722 600 / 2271 80.2 16" MWY 10" FLG N/A N/A tripod 900 18 3.7 1.0 1.8 D

31326 63 x 86 96.6 / 2758 84.1 / 2136 850 / 3218 114 6" FLG 6" FLG N/A N/A tripod 1425 21 6.2 1.4 2.4

32678 63 x 86 96.6 / 2758 84.1 / 2136 850 / 3218 114 6" FLG 6" FLG 4" FLG 4" FLG tripod 1425 24 9.3 1.9 3.0

32253 63 x 86 96.6 / 2758 84.1 / 2136 850 / 3218 114 10" FLG 6" FLG N/A N/A tripod 1200 30 18 2.9 4.6 A A
63" Diameter

31327 63 x 86 97.0 / 2769 84.5 / 2146 850 / 3218 114 16" MWY 6" FLG N/A N/A tripod 1200 36 33 4.2 6.7

31292 63 x 86 97.0 / 2769 84.5 / 2146 850 / 3218 114 16" MWY 6" FLG 4" FLG 4" FLG tripod 1425 42 52 5.7 9.0

32356 63 x 86 97.0 / 2769 84.5 / 2146 850 / 3218 114 16" MWY 10" FLG N/A N/A tripod 1425 48 74 7.5 12.0

32500 63 x 116 128.5 / 3264 116.0 / 2946 1250 / 4732 167 16" MWY 6" FLG N/A N/A tripod 1425 63 168 13.0 20.0

31325 63 x 116 128.5 / 3264 116.0 / 2946 1250 / 4732 167 16" MWY 6" FLG 4" FLG 4" FLG tripod 1775 *Cubic Ft. = 0.1337 x Gallons
Call Factory 63 x 116 128.5 / 3264 116.0 / 2946 1250 / 4732 167 16" MWY 10" FLG N/A N/A tripod * A

31456 63 x 144 158.5 / 4026 146.0 / 3708 1600 / 6057 214 16" MWY 6" FLG N/A N/A tripod 2025
Vacuum Breaker Installation Flex Connectors Installation
31607 63 x 144 158.5 / 4026 146.0 / 3708 1600 / 6057 214 16" MWY 6" FLG 4" FLG 4" FLG tripod 2025

31664 63 x 144 158.5 / 4026 146.0 / 3708 1600 / 6057 214 16" MWY 10" FLG N/A N/A tripod 2025
VACUUM BREAKER VACUUM BREAKER
*Measurements are subject to change without notice and are for reference only. CONTROL VALVE VACUUM BREAKER FLEX CONNECTORS
SHUT (LOCATION OPTIONAL)
OFF CONTROL
VALVE CONTROL VALVE
Color Options: AL - Almond BL - Blue BK - Black GR - Gray NA - Natural
VALVE

NOTE: See flex connection and vacuum breaker information on page 13.

TANK
Tank Dia. Adder Ht. (X)
Fleck Valve Inches / mm Inches / mm
X BASE
2750 18 / 457 6.5 / 165
FLEX
CONNECTORS
2850 21 / 533 6.5 / 165

2900 24, 30 / 610, 762 12 / 305 NOTE: Flexible connectors must be installed between hard piping and tank openings. These pressure vessels are rated for an
internal negative pressure of 5˝ HG (17 Pa) vacuum below atmospheric. If negative pressure could ever exceed 5˝ Hg (17 Pa), an
2930 36 / 914 13 / 330
Installation Tips: adequate vacuum breaker must also be properly installed. Failure to install flex connection properly, or improper installation of a
• Bolt base to floor 3150 42 / 1067 10 / 254 vacuum breaker when required, may void the warranty.
• Calculate height for valve and
3900 48-63 / 1219-1600 15 /381
base combined (see photo)
 Composite
Composite Vessels Specifications

Part No. Description Height w/ base Height w/o base Capacity Cubic Top Bottom Top Bottom Base Ship
Inches / mm Inches / mm Gallons / Liters Feet Open Open Side Side Weight Dome Volume (gallons)
31281 48 x 72 91.8 / 2332 76.0 / 1930 463 / 1753 61.9 6" FLG N/A N/A N/A tripod 780 and Straight Wall Gallon per Inch
48" Diameter

31285 48 x 72 92.8 / 2357 77.0 / 1955 463 / 1753 61.9 6" FLG 6" FLG N/A N/A tripod 780
Nominal Diameter
31647 48 x 72 93.8 / 2383 78.0 / 1981 463 / 1753 61.9 16" MWY 6" FLG N/A N/A tripod 780
D Gallons* Gallon / Inch A
31283 48 x 72 96.6 / 2454 80.8 / 2052 463 / 1753 61.9 6" FLG 6" FLG 4" FLG 4" FLG tripod 780 (inches) (One Dome) (Approx.) (Sq. Feet) GAL / IN
31432 48 x 72 97.5 / 2477 81.7 / 2075 463 / 1753 61.9 16" MWY 6" FLG 4" FLG 4" FLG tripod 780 12 1.0 0.5 0.7
D A
31390 63 x 67 79.5 / 2324 67.0 / 1702 600 / 2271 80.2 6" FLG 6" FLG N/A N/A tripod 900 13 1.4 0.5 0.9

Call Factory 63 x 67 79.5 / 2324 67.0 / 1702 600 / 2271 80.2 10" FLG 6" FLG N/A N/A tripod * 14 1.7 0.6 1.1

31290 63 x 67 80.3 / 2344 67.8 / 1722 600 / 2271 80.2 16" MWY 6" FLG N/A N/A tripod 900 16 2.7 0.8 1.3

32008 63 x 67 80.3 / 2344 67.8 / 1722 600 / 2271 80.2 16" MWY 10" FLG N/A N/A tripod 900 18 3.7 1.0 1.8 D

31326 63 x 86 96.6 / 2758 84.1 / 2136 850 / 3218 114 6" FLG 6" FLG N/A N/A tripod 1425 21 6.2 1.4 2.4

32678 63 x 86 96.6 / 2758 84.1 / 2136 850 / 3218 114 6" FLG 6" FLG 4" FLG 4" FLG tripod 1425 24 9.3 1.9 3.0

32253 63 x 86 96.6 / 2758 84.1 / 2136 850 / 3218 114 10" FLG 6" FLG N/A N/A tripod 1200 30 18 2.9 4.6 A A
63" Diameter

31327 63 x 86 97.0 / 2769 84.5 / 2146 850 / 3218 114 16" MWY 6" FLG N/A N/A tripod 1200 36 33 4.2 6.7

31292 63 x 86 97.0 / 2769 84.5 / 2146 850 / 3218 114 16" MWY 6" FLG 4" FLG 4" FLG tripod 1425 42 52 5.7 9.0

32356 63 x 86 97.0 / 2769 84.5 / 2146 850 / 3218 114 16" MWY 10" FLG N/A N/A tripod 1425 48 74 7.5 12.0

32500 63 x 116 128.5 / 3264 116.0 / 2946 1250 / 4732 167 16" MWY 6" FLG N/A N/A tripod 1425 63 168 13.0 20.0

31325 63 x 116 128.5 / 3264 116.0 / 2946 1250 / 4732 167 16" MWY 6" FLG 4" FLG 4" FLG tripod 1775 *Cubic Ft. = 0.1337 x Gallons
Call Factory 63 x 116 128.5 / 3264 116.0 / 2946 1250 / 4732 167 16" MWY 10" FLG N/A N/A tripod * A

31456 63 x 144 158.5 / 4026 146.0 / 3708 1600 / 6057 214 16" MWY 6" FLG N/A N/A tripod 2025
Vacuum Breaker Installation Flex Connectors Installation
31607 63 x 144 158.5 / 4026 146.0 / 3708 1600 / 6057 214 16" MWY 6" FLG 4" FLG 4" FLG tripod 2025

31664 63 x 144 158.5 / 4026 146.0 / 3708 1600 / 6057 214 16" MWY 10" FLG N/A N/A tripod 2025
VACUUM BREAKER VACUUM BREAKER
*Measurements are subject to change without notice and are for reference only. CONTROL VALVE VACUUM BREAKER FLEX CONNECTORS
SHUT (LOCATION OPTIONAL)
OFF CONTROL
VALVE CONTROL VALVE
Color Options: AL - Almond BL - Blue BK - Black GR - Gray NA - Natural
VALVE

NOTE: See flex connection and vacuum breaker information on page 13.

TANK
Tank Dia. Adder Ht. (X)
Fleck Valve Inches / mm Inches / mm
X BASE
2750 18 / 457 6.5 / 165
FLEX
CONNECTORS
2850 21 / 533 6.5 / 165

2900 24, 30 / 610, 762 12 / 305 NOTE: Flexible connectors must be installed between hard piping and tank openings. These pressure vessels are rated for an
internal negative pressure of 5˝ HG (17 Pa) vacuum below atmospheric. If negative pressure could ever exceed 5˝ Hg (17 Pa), an
2930 36 / 914 13 / 330
Installation Tips: adequate vacuum breaker must also be properly installed. Failure to install flex connection properly, or improper installation of a
• Bolt base to floor 3150 42 / 1067 10 / 254 vacuum breaker when required, may void the warranty.
• Calculate height for valve and
3900 48-63 / 1219-1600 15 /381
base combined (see photo)
 Chemical
Composite Vessels Resistance

A unique feature of a Structural pressure vessel is its construction and use of a leak-proof pressure vessel liner. The liner is made from FDA-approved,
Top and Bottom Opening Threads highly stress- and crack-resistant, UV-inhibited polyethylene.

SIZE Chemical Inner Shell Material

Description Polyethylene Polypropylene PVDF ECTFE
Composite/ Number of Full 45° Air Excellent Excellent Excellent Excellent
Size Polyglass Threads Composite
Aluminum Chloride 20° C Excellent Excellent Excellent Excellent
2.5"- 8" NPSM 6 3 min 6 Ammonia 20° C Excellent Excellent ( Gas ) Very Good Very Good
4"- 8" UN 7 3 min 7 Arsenic 20° C Excellent Excellent No Data No Data
Arsenic Acid 20° C Excellent No Data Excellent Excellent
4.5"- 8" Buttress 7 3 min 7 Benzene 20° C Poor Fair ( 38° C ) Very Good Excellent
Bleach 20° C Very Good No Data No Data Excellent
# FULL THREADS Bleach Warm Fair No Data Fair Excellent
Bromine Water 20° C Very Good ➔ Excellent Poor ➔ Fair Excellent Excellent
Calcium Carbonate Excellent Excellent Excellent Excellent
Carbonic Acid 20° C Excellent Excellent Excellent Excellent
Top and Bottom Opening Flanges/Manway Caustic Soda 20° C Excellent Excellent Excellent No Data
A O.D.
Chlorine (Liquid) Fair Fair Excellent Excellent
Chromic Acid 20° C Excellent Very Good Excellent Excellent
A Number Weight
Size L I.D. B.C. O.D. Bolt Dia. of Holes (lbs.) Copper Sulfate Excellent Excellent Excellent Excellent
Ferric Chloride 20° C Excellent Excellent Excellent Excellent
6" SNA 3.6" 5.9" 8.5" 9.4" 0.31" 12 5.8
Fluorine 20° C Fair Poor Very Good ➔ Excellent Excellent
B.C.
10" ANSI 3.7" 10.0" 14.3" 16.0" 0.88" 12 17.8 Freon 11 20° C No Data No Data Excellent Excellent
I.D. Hydrochloric Acid 20° C Very Good ➔ Excellent Very Good ➔ Excellent Very Good ➔ Excellent Excellent
16" Manway SNA 4.3" 16.0" 20.4" 21.3" 0.50" 24 34.0
Hydrofluoric Acid 20° C Excellent Excellent Very Good Excellent
L
Hydrogen Peroxide 20° C Excellent Excellent Excellent Excellent
Lime Chloride Excellent No Data No Data No Data
Magnesium Salts 20° C Excellent Excellent Excellent No Data
Methyl Chloride 20° C Good Fair Very Good ➔ Excellent Excellent

Manway Cover Nitric Acid 20° C

Ozone (4 ppm) 20° C
Poor
Good
Fair
Fair
Very Good ➔ Excellent
Very Good ➔ Excellent
Very Good ➔ Excellent
Excellent
VINYLESTER
COVER Photographic Solutions Excellent Excellent No Data Excellent
1–1/4" NPT
Pressure STANDARD THREAD Plating Solutions Good ➔ Very Good Excellent Excellent Excellent
Material Rating Tapping VENT
STANDARD Potassium Carbonate 20° C Excellent Excellent Excellent Excellent
CPVC 100 psi As requested Potassium Sulfate 20° C Excellent Excellent Excellent Excellent
2"
Sodium Bicarbonate 20° C Excellent Excellent Excellent Excellent
VE 150 psi As shown only
Sodium Carbonate 20° C Excellent Excellent Excellent Excellent
VENT EDPM SEAL AND
PLUG STAINLESS Sodium Chloride Excellent Excellent Excellent Excellent
STANDARD STEEL BOLT KIT Sodium Fluoride 20° C Excellent Excellent Excellent Excellent
STANDARD
Sodium Sulfate 20° C Excellent Excellent No Data Excellent
Sodium Sulfide 20° C Excellent Excellent No Data Excellent
Sodium Sulfite 20° C Excellent Excellent No Data Excellent
Sea Water Excellent Excellent Very Good Excellent
B Steam Excellent No Data No Data No Data
Side Flange Sulfuric Acid 10%, 20° C Good ➔ Very Good Excellent Good ➔ Very Good Good ➔ Very Good
Sulfuric Acid 20%, 20° C No Data Excellent No Data Excellent
Sulfuric Acid 50%, 20° C Excellent Excellent Excellent Excellent
B Number Weight
Size L I.D. B.C. O.D. Bolt Dia. of Holes (lbs.) Sulfuric Acid 76-97%, 20° C Good Good Excellent Excellent
Toluene 20° C Poor Poor Very Good Excellent
4" ANSI 4.1" 4.0" 7.5" 9.0" 0.63" 8 6.4 L I.D. B.C.
Trichlorobenzene 20° C Fair No Data Excellent Good
Zinc Chloride 20° C No Data No Data Excellent Excellent
Zinc Oxide 20° C Excellent Excellent No Data No Data
Zinc Sulfate 20° C Excellent Excellent Excellent Excellent
O.D. * This is a general indicator of the polymer’s resistance to certain chemicals. When there is doubt or in
critical applications, we recommend ASTM Test D-543.
 Chemical
Composite Vessels Resistance

A unique feature of a Structural pressure vessel is its construction and use of a leak-proof pressure vessel liner. The liner is made from FDA-approved,
Top and Bottom Opening Threads highly stress- and crack-resistant, UV-inhibited polyethylene.

SIZE Chemical Inner Shell Material

Description Polyethylene Polypropylene PVDF ECTFE
Composite/ Number of Full 45° Air Excellent Excellent Excellent Excellent
Size Polyglass Threads Composite
Aluminum Chloride 20° C Excellent Excellent Excellent Excellent
2.5"- 8" NPSM 6 3 min 6 Ammonia 20° C Excellent Excellent ( Gas ) Very Good Very Good
4"- 8" UN 7 3 min 7 Arsenic 20° C Excellent Excellent No Data No Data
Arsenic Acid 20° C Excellent No Data Excellent Excellent
4.5"- 8" Buttress 7 3 min 7 Benzene 20° C Poor Fair ( 38° C ) Very Good Excellent
Bleach 20° C Very Good No Data No Data Excellent
# FULL THREADS Bleach Warm Fair No Data Fair Excellent
Bromine Water 20° C Very Good ➔ Excellent Poor ➔ Fair Excellent Excellent
Calcium Carbonate Excellent Excellent Excellent Excellent
Carbonic Acid 20° C Excellent Excellent Excellent Excellent
Top and Bottom Opening Flanges/Manway Caustic Soda 20° C Excellent Excellent Excellent No Data
A O.D.
Chlorine (Liquid) Fair Fair Excellent Excellent
Chromic Acid 20° C Excellent Very Good Excellent Excellent
A Number Weight
Size L I.D. B.C. O.D. Bolt Dia. of Holes (lbs.) Copper Sulfate Excellent Excellent Excellent Excellent
Ferric Chloride 20° C Excellent Excellent Excellent Excellent
6" SNA 3.6" 5.9" 8.5" 9.4" 0.31" 12 5.8
Fluorine 20° C Fair Poor Very Good ➔ Excellent Excellent
B.C.
10" ANSI 3.7" 10.0" 14.3" 16.0" 0.88" 12 17.8 Freon 11 20° C No Data No Data Excellent Excellent
I.D. Hydrochloric Acid 20° C Very Good ➔ Excellent Very Good ➔ Excellent Very Good ➔ Excellent Excellent
16" Manway SNA 4.3" 16.0" 20.4" 21.3" 0.50" 24 34.0
Hydrofluoric Acid 20° C Excellent Excellent Very Good Excellent
L
Hydrogen Peroxide 20° C Excellent Excellent Excellent Excellent
Lime Chloride Excellent No Data No Data No Data
Magnesium Salts 20° C Excellent Excellent Excellent No Data
Methyl Chloride 20° C Good Fair Very Good ➔ Excellent Excellent

Manway Cover Nitric Acid 20° C

Ozone (4 ppm) 20° C
Poor
Good
Fair
Fair
Very Good ➔ Excellent
Very Good ➔ Excellent
Very Good ➔ Excellent
Excellent
VINYLESTER
COVER Photographic Solutions Excellent Excellent No Data Excellent
1–1/4" NPT
Pressure STANDARD THREAD Plating Solutions Good ➔ Very Good Excellent Excellent Excellent
Material Rating Tapping VENT
STANDARD Potassium Carbonate 20° C Excellent Excellent Excellent Excellent
CPVC 100 psi As requested Potassium Sulfate 20° C Excellent Excellent Excellent Excellent
2"
Sodium Bicarbonate 20° C Excellent Excellent Excellent Excellent
VE 150 psi As shown only
Sodium Carbonate 20° C Excellent Excellent Excellent Excellent
VENT EDPM SEAL AND
PLUG STAINLESS Sodium Chloride Excellent Excellent Excellent Excellent
STANDARD STEEL BOLT KIT Sodium Fluoride 20° C Excellent Excellent Excellent Excellent
STANDARD
Sodium Sulfate 20° C Excellent Excellent No Data Excellent
Sodium Sulfide 20° C Excellent Excellent No Data Excellent
Sodium Sulfite 20° C Excellent Excellent No Data Excellent
Sea Water Excellent Excellent Very Good Excellent
B Steam Excellent No Data No Data No Data
Side Flange Sulfuric Acid 10%, 20° C Good ➔ Very Good Excellent Good ➔ Very Good Good ➔ Very Good
Sulfuric Acid 20%, 20° C No Data Excellent No Data Excellent
Sulfuric Acid 50%, 20° C Excellent Excellent Excellent Excellent
B Number Weight
Size L I.D. B.C. O.D. Bolt Dia. of Holes (lbs.) Sulfuric Acid 76-97%, 20° C Good Good Excellent Excellent
Toluene 20° C Poor Poor Very Good Excellent
4" ANSI 4.1" 4.0" 7.5" 9.0" 0.63" 8 6.4 L I.D. B.C.
Trichlorobenzene 20° C Fair No Data Excellent Good
Zinc Chloride 20° C No Data No Data Excellent Excellent
Zinc Oxide 20° C Excellent Excellent No Data No Data
Zinc Sulfate 20° C Excellent Excellent Excellent Excellent
O.D. * This is a general indicator of the polymer’s resistance to certain chemicals. When there is doubt or in
critical applications, we recommend ASTM Test D-543.
 Pressure Vessel Requirement Form
Composite Vessels and Engineering Guide Specifications
Instructions: Circle or fill in appropriate data. Fax sheet to
Pentair Water Treatment (440-286-9673 or 1-800-942-7659) for a quote. PRESSURE LIMITS TEMPERATURE LIMITS
120 psi
(830 kPa)
Units English or Metric Circle or fill in appropriate data
150 psi
A1 (1,050 kPa)
Pressure PSI or kPa min. max. 150° F (65° C) Flanged Composite
75 psi s sel
s FRP Vinylester
Ve
(520 kPa) re Polyglass w/Threads
Temperature ° F or ° C min. max. - Po ly g l a s s 120° F (49° C)

u
RP

ss
G FRP Polyester

re ss u re Vesse ls

Pre
A3

-
RP
S p e c i al

n e u m a ti c

o s it e s- F
Liner Material PE 100° F (38° C)

Or
ROmate Storage Vessels

der
mp
ro - P
Volume Gallons or Liters

Co
nP
Retention Vessels

d
Hy
tio
38° F (3° C) Minimum Temp. for ASME

en
et
Pr
Height Constraint (H) Inches or mm

R
es
su
re
Va
cu 0° F (-18° C)
um -5"
Width Constraint (W) Inches or mm A4 0 Hg
250 psi
(1,725 kPa)
12" 13" 14" 16" 18" 21" 100 kPa = 1 bar
Pressure Vessel -150° F (-101° C)
Inches
Diameter 24" 30" 36" 42" 48" 63"

Pressure Vessel SHORT FORM:

Inches or mm For standard lengths, refer to Specification pages.
Length
The contractor shall provide fiberglass / composite pressure-rated vessels with a diameter of _____" and an overall length of ____" constructed of non-
A2 corrosive materials according to the features and dimensions as shown on the drawings. The total vessel capacity shall be ____ gallons /____ liters.
2.5" 4"- 8" 4.5"- 8" 6" SNA 10" ANSI 16" SNA
Top Opening A1
NPSM UN Buttress Flange Flange Manway
The pressure vessels shall have an operating pressure of ____ psi and operating temperature of ____° Fahrenheit. The laminate outer shell shall be an
epoxy and fiberglass matrix as manufactured by Pentair Water Treatment.
2.5" 4"- 8" 4.5"- 8" 6" SNA 10" ANSI 16" SNA
Bottom Opening A2
NPSM UN Buttress Flange Flange Manway
The pressure vessel shall be approved by an international third-party agency such as NSF or ASME (if required).
Side Top Opening A3 36" 48" 63" Diameter Only 4"
LONG FORM: Part V. Pressure Vessel Openings
Side Bottom Opening A4 36" 48" 63" Diameter Only 4" 5.01 Flanged pressure vessel openings shall be either integrally
Part I. Quality Standards
Distributor - Top Diffuser High Flow molded or thermo-welded to the pressure vessel body without
1.01 Acceptable manufacturers - Pentair Water Treatment. the use of chemical bonding or adhesives.
Distributor - Side Top Diffuser High Flow 1.02 International third-party approvals by one or more of the 5.02 Flange supports shall be coated to protect the alloy from
following agencies is required: NSF or ASME. external corrosion.
Distributor - Side Btm. Hub & Lateral Fishbone High Flow
Part II. Performance Standards 5.03 Threaded pressure vessel openings shall all be an NPSM or UN
Distributor - Bottom Hub & Lateral Fishbone High Flow 2.01 The maximum operating pressure of the pressure vessel shall be thread specification with a positive O-ring seal.
Pressure Vessel Base None Standard Extended Tripod 150 psi and designed with a safety factor of 4 to 1 (6 to 1 for 5.04 The pressure vessel shall have a ___" (flanged or threaded) open-
ASME) for minimum burst pressure. ing located at the center of the top dome and a ___" (flanged or
Flange Covers VE CPVC Noryl Other : 2.02 The maximum operating temperature of the pressure vessel threaded) opening located at the center of the bottom dome.
shall be rated at 120° F or 150° F (49° C or 65° C). 5.05 Side openings shall be located according to the drawings with a
O-Ring Material EPDM VITON Other :
2.03 The pressure vessel shall be designed to pass a 0-to-rated oper- ___" flanged top sidewall opening and a ___" flanged lower side-
Please list. ating pressure cycle test of 250,000 cycles without failure. wall opening.
Vessel Contents 2.04 The pressure vessel shall be capable of withstanding negative 5.06 A flanged Manway of ___" shall be located on the __________
pressure up to 5" Hg. (top dome and / or bottom dome) of the pressure vessel for
Pressure Vessel Color Natural Almond Blue Black Gray accessibility and servicing.
Part III. Inner Shell
5.07 Connections to pressure vessel openings shall accommodate
Vessel Quantity Number of Units : 3.01 The pressure vessel inner shell shall be constructed of virgin
vertical expansion between side, top, and bottom openings and
PE material.
ASME Code Yes No between openings and hard piping.
3.02 The pressure vessel inner shell will isolate the fluid contents of
the pressure vessel to eliminate corrosion, intrusion, or reaction. Part VI. Pressure Vessel Support Base
3.03 The pressure vessel inner shell material shall be the only 6.01 The pressure vessel support base shall be a Tripod or Skirt
material in contact with the contents. design as shown in the drawings provided. Accessibility to
3.04 The holding capacity of the pressure vessel inner shell shall be the bottom of the pressure vessel is (not) required for servicing
___ gallons or ___ liters. and maintenance.
Part IV. Outer Fiberglass Shell 6.02 Minimum pressure vessel clearance at the bottom of the pres-
sure vessel shall be ___" as shown in the drawings provided.
4.01 The outer pressure vessel shell shall be constructed of
continuous fiberglass roving. Part VII.
Pressure Vessel drawings are available from Pentair Water Treatment. The pressure vessel shall be equipped with an adequate vacuum
breaker installed between the pressure vessel inlet and any valve.
 Pressure Vessel Requirement Form
Composite Vessels and Engineering Guide Specifications
Instructions: Circle or fill in appropriate data. Fax sheet to
Pentair Water Treatment (440-286-9673 or 1-800-942-7659) for a quote. PRESSURE LIMITS TEMPERATURE LIMITS
120 psi
(830 kPa)
Units English or Metric Circle or fill in appropriate data
150 psi
A1 (1,050 kPa)
Pressure PSI or kPa min. max. 150° F (65° C) Flanged Composite
75 psi s sel
s FRP Vinylester
Ve
(520 kPa) re Polyglass w/Threads
Temperature ° F or ° C min. max. - Po ly g l a s s 120° F (49° C)

u
RP

ss
G FRP Polyester

re ss u re Vesse ls

Pre
A3

-
RP
S p e c i al

n e u m a ti c

o s it e s- F
Liner Material PE 100° F (38° C)

Or
ROmate Storage Vessels

der
mp
ro - P
Volume Gallons or Liters

Co
nP
Retention Vessels

d
Hy
tio
38° F (3° C) Minimum Temp. for ASME

en
et
Pr
Height Constraint (H) Inches or mm

R
es
su
re
Va
cu 0° F (-18° C)
um -5"
Width Constraint (W) Inches or mm A4 0 Hg
250 psi
(1,725 kPa)
12" 13" 14" 16" 18" 21" 100 kPa = 1 bar
Pressure Vessel -150° F (-101° C)
Inches
Diameter 24" 30" 36" 42" 48" 63"

Pressure Vessel SHORT FORM:

Inches or mm For standard lengths, refer to Specification pages.
Length
The contractor shall provide fiberglass / composite pressure-rated vessels with a diameter of _____" and an overall length of ____" constructed of non-
A2 corrosive materials according to the features and dimensions as shown on the drawings. The total vessel capacity shall be ____ gallons /____ liters.
2.5" 4"- 8" 4.5"- 8" 6" SNA 10" ANSI 16" SNA
Top Opening A1
NPSM UN Buttress Flange Flange Manway
The pressure vessels shall have an operating pressure of ____ psi and operating temperature of ____° Fahrenheit. The laminate outer shell shall be an
epoxy and fiberglass matrix as manufactured by Pentair Water Treatment.
2.5" 4"- 8" 4.5"- 8" 6" SNA 10" ANSI 16" SNA
Bottom Opening A2
NPSM UN Buttress Flange Flange Manway
The pressure vessel shall be approved by an international third-party agency such as NSF or ASME (if required).
Side Top Opening A3 36" 48" 63" Diameter Only 4"
LONG FORM: Part V. Pressure Vessel Openings
Side Bottom Opening A4 36" 48" 63" Diameter Only 4" 5.01 Flanged pressure vessel openings shall be either integrally
Part I. Quality Standards
Distributor - Top Diffuser High Flow molded or thermo-welded to the pressure vessel body without
1.01 Acceptable manufacturers - Pentair Water Treatment. the use of chemical bonding or adhesives.
Distributor - Side Top Diffuser High Flow 1.02 International third-party approvals by one or more of the 5.02 Flange supports shall be coated to protect the alloy from
following agencies is required: NSF or ASME. external corrosion.
Distributor - Side Btm. Hub & Lateral Fishbone High Flow
Part II. Performance Standards 5.03 Threaded pressure vessel openings shall all be an NPSM or UN
Distributor - Bottom Hub & Lateral Fishbone High Flow 2.01 The maximum operating pressure of the pressure vessel shall be thread specification with a positive O-ring seal.
Pressure Vessel Base None Standard Extended Tripod 150 psi and designed with a safety factor of 4 to 1 (6 to 1 for 5.04 The pressure vessel shall have a ___" (flanged or threaded) open-
ASME) for minimum burst pressure. ing located at the center of the top dome and a ___" (flanged or
Flange Covers VE CPVC Noryl Other : 2.02 The maximum operating temperature of the pressure vessel threaded) opening located at the center of the bottom dome.
shall be rated at 120° F or 150° F (49° C or 65° C). 5.05 Side openings shall be located according to the drawings with a
O-Ring Material EPDM VITON Other :
2.03 The pressure vessel shall be designed to pass a 0-to-rated oper- ___" flanged top sidewall opening and a ___" flanged lower side-
Please list. ating pressure cycle test of 250,000 cycles without failure. wall opening.
Vessel Contents 2.04 The pressure vessel shall be capable of withstanding negative 5.06 A flanged Manway of ___" shall be located on the __________
pressure up to 5" Hg. (top dome and / or bottom dome) of the pressure vessel for
Pressure Vessel Color Natural Almond Blue Black Gray accessibility and servicing.
Part III. Inner Shell
5.07 Connections to pressure vessel openings shall accommodate
Vessel Quantity Number of Units : 3.01 The pressure vessel inner shell shall be constructed of virgin
vertical expansion between side, top, and bottom openings and
PE material.
ASME Code Yes No between openings and hard piping.
3.02 The pressure vessel inner shell will isolate the fluid contents of
the pressure vessel to eliminate corrosion, intrusion, or reaction. Part VI. Pressure Vessel Support Base
3.03 The pressure vessel inner shell material shall be the only 6.01 The pressure vessel support base shall be a Tripod or Skirt
material in contact with the contents. design as shown in the drawings provided. Accessibility to
3.04 The holding capacity of the pressure vessel inner shell shall be the bottom of the pressure vessel is (not) required for servicing
___ gallons or ___ liters. and maintenance.
Part IV. Outer Fiberglass Shell 6.02 Minimum pressure vessel clearance at the bottom of the pres-
sure vessel shall be ___" as shown in the drawings provided.
4.01 The outer pressure vessel shell shall be constructed of
continuous fiberglass roving. Part VII.
Pressure Vessel drawings are available from Pentair Water Treatment. The pressure vessel shall be equipped with an adequate vacuum
breaker installed between the pressure vessel inlet and any valve.