STANDARDS

CPVC PIPES CPVC FITTINGS

Class of Pipe Standard Sizes available Class of Fitting Standard Sizes available

Class-1/SDR-11 IS:15778 ½’’ – 2’’ SDR – 11 ASTM D 2846 ½’’ – 2’’

ASTM D 2846
Class-2/SDR-13.5 IS:15778:2007 ½’’ – 2’’ SCH-40 ASTM F 438 21/2’’ – 4’’
ASTM D 2846
SCH-40 ASTM F 441 2 1/2’’ – 8’’ SCH-80 ASTM F 439 21/2’’ – 8’’

SCH-80 ASTM F 441 2 ½’’ – 8’’ Solvent Cement ASTM F 493

Threads as per IS 554

TECHNICAL DETAILS

Dimensional detail of SDR-11 (Class-1) and SDR -13.5 (Class – 2)

CPVC Pipes Conforming to IS: 15778:2007

Sr. Size(mm) Outside Diameter(mm) Min. Wall thickness(mm)

No. Min. Max. Tolerance SDR- 11 SDR – 13.5

1 15 (1/2”) 15.80 16.00 ± 0.08 1.70 1.40

2 20 (3/4”) 22.20 22.40 ± 0.08 2.00 1.70

3 25 (1”) 28.40 28.80 ± 0.08 2.60 2.10

4 32 (1-1/4”) 34.70 35.10 ± 0.08 3.20 2.60

5 40 (1-1/2”) 41.10 41.50 ± 0.10 3.80 3.10

6 50 (2”) 54.30 54.70 ± 0.10 4.90 4.00

DIMENSION DETAIL OF SCH - 40 & SCH - 80 CPVC PIPES AS PER ASTM F 441

Min. Wall Thickness

Nominal Size Average O.D. (mm) Tolerance (mm)
SCH 40 SCH-80 SCH-40 SCH-80
2 1/2'' 65 73.00 73.00 ±0.18 5.16 7.01
3'' 80 88.90 88.90 ±0.20 5.49 7.62
4'' 100 114.30 114.30 ±0.23 6.02 8.56
6'' 150 168.30 168.30 ±0.28 7.11 10.97
8'' 200 219.10 219.10 ±0.38 8.18 12.70

WORKING PRESSURE DETAIL OF SDR - 11 & SDR - 13.5 CPVC PIPE

Pressure vs. Temperature rating Chart for CPVC 4120 as per ASTM D 2846
Operating
27°c 32°c 38°c 43°c 49°c 54°c 60°c 66°c 71°c 77°c 82°c 93°c
Temperature

27.60 25.12 22.65 20.30 18.00 15.90 13.80 12.50 11.04 9.00 6.80 5.52
1/2" , 3/4", 1" SDR -11
21.80 19.80 17.90 16.05 14.20 12.55 10.90 9.81 8.72 7.09 5.50 4.36
1 1/4",1 1/2" , & 2" SDR-13.5
Pressure in (Kg/cm2)

Note: The above pressure rating does not reflect the superior pressure ratings available for Flowline Plus system.
Ajay recommends that these pressure ratings only be used till the upgraded material is incorporated in the
relevant standards.

WORKING PRESSURE DETAIL OF SCH-40 & SCH - 80 PIPE

Pressure vs. Temperature rating Chart for CPVC 4120 as per ASTM F 441

Temperature (°C)
Size
Class 27°c 32°c 38°c 43°c 49°c 54°c 60°c 66°c 71°c 77°c 82°c 93°c
mm(Inch)
65 (2-1/2") 21.09 19.19 17.3 16.2 13.71 13.08 10.55 9.91 8.44 6.75 5.27 4.22
80 (3") 18.28 16.64 14.99 14.1 11.88 11.33 9.14 8.59 7.31 5.85 4.57 3.66
SCH -40 100 (4") 15.47 14.08 12.68 11.9 10.05 9.59 7.73 7.27 6.19 4.95 3.87 3.09
150(6") 12.66 11.52 10.38 9.74 8.23 7.85 6.33 5.95 5.06 4.05 3.1 2.53
200(8") 11.2 10.19 9.18 9.18 7.28 7.28 5.6 5.6 4.48 4.48 2.8 2.24
65(2-1/2") 29.53 26.87 24.21 22.7 19.19 18.31 14.77 13.88 11.81 9.45 7.38 5.91
80(3") 26.01 23.67 21.33 20 16.91 16.13 13.01 12.23 10.41 8.32 6.5 5.2
100(4") 22.5 20.47 18.45 17.3 14.62 13.95 11.25 10.57 9 7.2 5.62 4.5
150(6") 19.69 17.91 16.41 15.2 12.8 12.21 9.84 9.25 7.87 6.3 4.32 3.94
SCH-80 200(8") 17.5 15.75 14.35 14.4 11.38 11.38 8.75 8.75 7 7 4.38 3.5
Pressure in
Note : The above pressure ratings does not reflect the superior pressure ratings available for Flowline Plus systems. (Kg/cm2)
Ajay recommends that these pressure ratings only be used till the upgraded material is incorporated in the relevant standards.

BASIC PROPERTIES OF CPVC

BASIC PHYSICAL PROPERTIES

PROPERTY TEST CONDITION ENGLISH UNITS SI UNITS
GENERAL
Specific Gravity ASTM D 792 23°C 1.55 1.55
3
Specific Volume 23°C 0.645 Cm / g 0.645 Cm3 / g
Water Absorption ASTM D 570 23°C +0.03% +0.03%
100°C +0.55% +0.55%
Rockwell Hardness ASTM D785 23°C 119
Cell Class ASTM D 1784 23447
MECHANICAL
Izod Impact ASTM D 256 23°C 1.5 ft lbs/in o.n. 80 j/m o.n.
Tensile strength ASTM D 638 23°C 8000 psi 55 N/mm2
Tensile Modulus ASTM D 638 23°C 360,000 psi 2500 N/mm2
Flexural Strength ASTM D 790 23°C 15,100 psi 104 N/mm2
Flexural Modulus ASTM D 790 23°C 415,000 psi 2860 N/mm2
Compressive strength ASTM D 695 23°C 10,100 psi 70 N/mm2
Compressive Modulus ASTM D 695 23°C 196,000 psi 1350 N/mm2
THERMAL
Coefficient of Thermal
Expansion ASTM D 696 6.1x10-5 m/m/k
Thermal Conductivity ASTM C 177 0.14 Wm/k/m2
Heat Distortion Temperature ASTM D 648 103° c
Heat Capacity DSC 23°c 0.90 j/gk
100°c 1.10 J/gk.
FLAMMABILITY
0.062
Flammability Rating UL 94 in/0.157cm V-0 , 5VB , 5VA
Flame Speed ASTM E84 15
Smoke developed ASTM E84 70-125
Limiting Oxygen Index ASTM D 2863 60%
ELECTRICAL
Dielectric Strength ASTM D 147 1250 V/mil 4,92000 V/cm
Dielectric Constant ASTM D 150 60 Hz,-1°c 3.7 3.7
Power Factor ASTM D 150 1000 Hz 0.007 % 0.007 %
15
Volume Resistivity ASTM D 257 23°c 3.4x10 ohm/cm 3.4x1015 ohm/cm