The Pivotrol® Pump Patented

Selection and Sizing

How to Select and Size
From the inlet pressure, back pressure and filling head conditions given Condensate load 7000 lb/h
below, select the pump size and check valve package which meets the Steam pressure available for operating pump 80 psig
capacity requirement of the application. Vertical lift from pump to the return piping
Specify pump body, type PTC or PTF. Select optional extras as required. 30 feet
For GPM, multiply the capacities below by 0.002. Pressure in the return piping (piping friction negligible 25 psig
For kg/h, multiply the capacities below by 0.454. Filling head on the pump available 12 inches
For liquid specific gravities from 0.9 to 0.65, consult Spirax Sarco.
* Back pressure is the lift height (H) in feet x 0.433 plus psig in return line, Solution:
plus downstream piping friction pressure drop in psig calculated based 1. Calculate "H", the totallift or back pressure, against which the
on the maximum instantaneous discharge rate of te respective pump condensate must be pumped. = (30 x 0.433) + 25=38 psig
selected. (See TIS Sheets) 2. From capacity table, with 80 psig inlet pressure and 40 psig back
Note: To achieve rated capacity, pump must be installed with check pressure, choose a 2" x 2" pump with stainless steel check valves,
valves supplied by Spirax Sarco. Use of a substitute check valve may which ha a capacity of 6,935 lb/h.
effect the performance of the pump.
Note from capacity multiplying factor charts:
Condensate

Capacity lb/h When installed with recommended filling head above A. Pump capacity if filling head is 24": 1.16 x 6,935 = 8045 lb/h
Recovery

top of pump. B. Pump capacity using compressed air: 1.12 x 6,935 = 7767 lb/h
(% back pressure is 38—75=50%)

Motive Steam
Non-Electric

Vent to atmosphere or Gas Supply

Pumps

Pump
Exhaust
Condensate

Condensate
Return
Line
Return

At least
12" Seal Vented
on overflow Receiver (open system)

Recommended
Filling Installation
Head
The pump is fitted with
vented receiver or an inlet
reservoir.
Details of the application
will determine whether a
vented receiver or an inlet
Pressure reservoir will be needed
Filling to accomplish this.
Height Powered TD 42L or 52L Trap
Pump when steam supply is used

Local regulation may restrict the use of this product below the conditions quoted. Limiting conditions refer to standard connections only.
In the interests of development and improvement of the product, we reserve the right to change the specification. TI-5-030-US 4.13

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 The Pivotrol® Pump Patented
Selection and Sizing
Vented Receiver (Open System) Inlet Reservoir Piping (Closed System)
To drain condensate from a single or multiple source an "open" system, a vented To drain condensate from a single piece of equipment in a "closed"
receiver should be installed in a horizontal plane above and ahead of the pump. system, a reservoir should be installed in a horizontal plane above and
Sufficient receiver volume is needed above the filling head level to accept the ahead of the pump. Sufficient reservoir volume is needed above the
condensate reachng the receiver during the pump discharge stroke. More filling head level to accept the condensate reaching the reservoir during
important, the receiver must be sized to allow sufficient area for complete flash the pump discharge stroke. The chart below shows minimum reser-
steam separation from the condensate. The chart below shows proper vented voir sizing, based on condensate load, needed to prevent equipment
receiver sizing (per criteria set forth in the A.S.H.R.A.E. Handbook) based on the flooding during the pump dischare stroke. The reservoir can be a length
amount of flash steam present. If the receiver is sized as shown below, there will of large diameter pipe or a tank.
be sufficient volume for condensate storage and sufficient area for flash steam
separation. The receiver can be a length of large diameter pipe or a tank.

Pump size - up to 3"x 2" Pump size - up to 3"x 2"

Flash Steam Pipe Size Vent Line Liquid Reservoir Pipe Size
up to — Diameter Length Diameter lb/h 3" 4" 6" 8" 10"
75 lb/h 4" 36" 1-1/2" 500 or Less 2’
150 lb/h 6" 36" 2" 1000 2’
300 lb/h 8" 36" 3" 1500 3’ 2’
600 lb/h 10" 36" 4" 2000 3.5’ 2’ 1’
900 lb/h 12" 36" 6" 3000 3’ 2’
1200 lb/h 16" 36" 6" 4000 4’ 2’ 1’
2000 lb/h 20" 36" 8" 5000 6’ 3’ 2’
6000 3’ 2’

Condensate
7000 3’ 2’

Recovery
8000 4’ 2’
9000 4.5’ 3’ 2’
10,000 5’ 3’ 2’
11,000 5’ 3’ 2’

Pump Size – PTF4 Pump Size – PTF4

Non-Electric
Flash Steam Pipe Size Vent Line

Pumps
Liquid Load Reservoir Pipe Size*
up to – Diameter Length Diameter lb/h 12" 16" 20" 24"
1000 lb/h 16" 60" 6" 10,000 5’ 3’ 2’
2000 lb/h 20" 60" 8" 20,000 10’ 7’ 4’
3000 lb/h 24" 60" 8" 30,000 9’ 6’ 4’
4000 lb/h 26’’ 60" 10" 40,000 12’ 7.5’ 6’
5000 lb/h 28" 60" 10" 50,000 9’ 6’
6000 lb/h 30" 72" 12" 60,000 9’ 6’
7000 lb/h 32" 72" 12"
* When BP/MP is less than 50%, these reser-
8000 lb/h 36" 72" 14" voir lengths can be reduced by 1/2.

Capacity Multiplying Factors for other Filling Heads Capacity Multiplying Factors for Motive Gas Supply
(other than steam)
Filling Head Check valve and piping size, pump type
Inches mm 2" x 2" 3" x 2" 2" and 3" x 2" PTC / PTF
PTF-HP PTF4 % Back Pressure
PTC/PTF PTC/PTF
10% 20% 30% 40% 50% 60% 70% 80% 90% VS. Motive Pressure
(bp / MP)
-3.0 -76 0.47 NA NA 0.23
-1.0 -25 0.66 0.40 NA 0.41 Capacity
1.04 1.06 1.08 1.10 1.12 1.15 1.18 1.23 1.28 Multiplying
0.0 0 0.76 0.43 0.6 0.70 Factors
6.0 152 0.90 0.69 0.9 0.89
PTF-HP
12.0 305 1.00 1.00 1.0 0.95 Capacity
18.0 457 1.08 1.02 1.1 0.98 1.19 1.43 1.43 1.53 1.85 2.04 2.14 2.20 2.44 Multiplying
24.0 610 1.16 1.04 1.2 1.00 Factors
36.0 914 1.38 1.17 1.3 1.00 PTF4
48.0 1219 1.48 1.25 1.4 1.08 Capacity
60.0 1524 N/A N/A 1.5 1.20 Multiplying
1.19 1.43 1.43 1.53 1.85 2.04 2.14 2.20 2.44 Factors

Local regulation may restrict the use of this product below the conditions quoted. Limiting conditions refer to standard connections only.
In the interests of development and improvement of the product, we reserve the right to change the specification. TI-5-030-US 4.13

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 The Pivotrol® Pump Patented
Selection and Sizing
Motive Back 2" x 2" 3" x 2" PTC/PTF 3" x 2" Motive Back 3" x 2"
Pressure Pressure PTC/PTF 3" x 3" PPF Top PTF-HTF Pressure Pressure PTF-HP
psig psig 12" Filling Head lb/hr 12" Filling Head lb/hr 12" Filling Head lb/hr psig psig 12" Filling Head lb/hr
200 180 - - - 300 200 12550
200 160 - 5250 3518 300 185 13875
200 140 6375 7375 4941 300 160 14565
200 120 7375 9440 6325 300 140 15750
200 100 8250 11145 7467 300 120 17125
200 80 9000 12565 8419 300 100 19125
200 60 9685 14260 9554 300 80 20315
200 50 10000 14875 9966 300 60 22065
200 40 10310 15690 10512 300 40 24375
200 30 10635 16310 10928 300 20 27500
200 20 10950 17000 11390 300 10 28750
200 10 11195 17640 11819 280 200 11125
180 160 - 3750 2513 280 180 12435
180 140 5425 6335 4244 280 160 13250
180 120 6685 8555 5732 280 140 14435
180 100 7760 10375 6951 280 120 16875
180 80 8600 11980 8027 280 100 17875
180 60 9450 13625 9129 280 80 19125
180 50 9830 14375 9631 280 60 20850
180 40 10230 15150 10151 280 40 23125
180 30 10560 15875 10636 280 20 26125
180 20 10895 16665 11166 280 10 27565
180 10 11195 17505 11728 250 200 9190
160 140 4250 4860 3256 250 180 10185
160 120 5750 7500 5025 250 160 11000
160 100 7040 9375 6281 250 140 12190
160 80 8065 11135 7460 250 120 13935
160 60 9105 12940 8670 250 100 15935
160 50 9565 13750 9213 250 80 17065
160 40 9990 14565 9759 250 60 19000
Condensate

160 30 10440 15400 10318 250 40 21200

Recovery

160 20 10870 16270 10901 250 20 24125

160 10 11195 17315 11601 250 10 25700
140 120 4625 6085 4077 200 180 6065
140 100 6120 8145 5457 200 160 7190
140 80 7420 10065 6744 200 140 8315
140 60 8625 12120 8120 200 120 11935
140 50 9190 13000 8710 200 100 12500
140 40 9690 13940 9340 200 80 14065
Non-Electric

140 30 10245 14875 9966 200 60 15825

140 20 10760 15840 10613 200 40 18125
Pumps

140 10 11195 17045 11420 200 20 20815

120 100 4700 6300 4221 200 10 22315
120 80 6475 8625 5779 150 120 7875
120 60 7845 10970 7350 150 100 8875
120 50 8530 12100 8107 150 80 10750
120 40 9240 13160 8817 150 60 12625
120 30 9865 14250 9548 150 40 14935
120 20 10535 15280 10238 150 20 17375
120 10 11065 16655 11159 150 10 19000
100 80 4995 6260 4194 125 100 7065
100 60 6620 9255 6201 125 80 9065
100 50 7500 10680 7156 125 60 10875
100 40 8370 12040 8067 125 40 13250
100 30 9145 13310 8918 125 20 15500
100 20 9900 14460 9688 125 10 16685
100 10 10630 16100 10787 100 80 7245
80 60 5010 6485 4345 100 60 9125
80 50 6000 8435 5651 100 40 11435
80 40 6935 10185 6824 100 20 13810
80 30 7970 11750 7873 100 10 15375
80 20 8870 13250 8878 75 60 7035
80 10 10000 15190 10177 75 40 9435
60 50 4250 5000 3350 75 20 12125
60 40 5315 7485 5015 75 10 13565
60 30 6360 9625 6449 50 40 5085
60 20 7460 11580 7759 50 20 10185
60 10 9190 13750 9213 50 10 11625
50 40 4440 5500 3685 25 20 2750
50 30 5625 8125 5444 25 10 9685
50 20 6730 10315 6911
50 10 8690 12755 8546
40 30 4630 5750 3853
40 20 5850 8700 5829
40 10 7930 11470 7685
30 20 4810 5810 3893
30 15 5475 8000 5360
30 10 6820 9690 6492
20 15 4375 5375 3601
20 10 5210 7450 4925
15 10 4375 6000 4020

Local regulation may restrict the use of this product below the conditions quoted. Limiting conditions refer to standard connections only.
In the interests of development and improvement of the product, we reserve the right to change the specification. TI-5-030-US 4.13

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 The Pivotrol® Pump Patented
Selection and Sizing
Motive Back 36” Fill Head
Pressure Pressure (70” Fill Height)
psig psig lb/hr
200 150 22120 To size the PTF4 in a closed system:
200 140 22970 Establish available motive pressure.
200 120 24870
200 100 27110 Establish static back pressure on Pump/Trap combination.
200 80 29860 Place established pressures in formula below:
200 60 33400
200 50 35640
• Pump Motive Pressure (psig) – min. VAV delta P (psig) > Back Pressure (psig)
200 40 38390
200 30 41930 • Capacity charts to be read as normal, i.e. at pump motive and back pressure.
200 20 46920 • If, Pump Motive Pressure (psig) – min. VAV delta P (psig) < Back Pressure (psig), then
200 15 50460 isolate or remove VAV and multiply capacity by 0.77 to find reduced capacity without VAV.
180 120 23700
180 100 26020
180 60 32500 Sizing Example: 1
180 50 34810 A closed system has the following conditions:
180 40 37640 Motive steam available = 150 psig. Static Back Pressure = 45 psig.
180 30 41300
180 20 46440
180 15 50090 Open System.
160 120 22530 PTF4
160 100 24920
160 80 27830
160 60 31590 Capacity charts show capacity at 150 psig motive with 45 psig back pressure.
160 50 33980
160 40 36890 Closed System.
160 30 40660
160 20 45960 The Vent Assist Valve on the PTF4 requires at least 75 psig differential
160 15 49720 pressure to operate in a closed system.
140 100 23410
140 80 26220

Condensate
To size the PTF4 pump:

Recovery
140 60 29850
140 50 32150 Pump Motive Pressure – min. VAV delta P > Back Pressure.
140 40 34960 150 psig – 75 psig > 45 psig
140 30 38590
140 20 43710
140 15 47340 As the motive pressure is 150 psig and the VAV requires a minimum 120 psig to operate
120 80 24610 (75 + 45 = 120), this combination is sized correctly.
120 60 28110
120 50 30320

Non-Electric
120 40 33030

Pumps
120 30 36530
120 20 41460
120 15 44950
100 60 24730
100 50 27100
100 40 30010
100 30 33750
100 20 39030
100 15 42780
80 60 21350
80 50 23880
80 40 26980
80 30 30970
80 20 36610
80 15 40600
70 50 21850
70 40 24830
70 30 28680
70 25 31120
70 20 34110
70 15 37960
60 40 22940
60 30 26840
60 25 29310
60 20 32330
60 15 36230
50 30 25310
50 25 27970
50 20 30910
50 15 34160
40 30 19480
40 25 22230
40 20 25600
40 15 29940
30 20 20440
30 15 25650

TI-5-030-US 4.13
Local regulation may restrict the use of this product below the conditions quoted. Limiting conditions refer to standard connections only.
In the interests of development and improvement of the product, we reserve the right to change the specification.

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 The Pivotrol® Pump Patented Selection and Sizing
Capacity Charts 2" x 2" Pivotrol® Pump
0 0

10 10 P S IG 10
B a ck
20
P ress 20
20 P S ure (
IG B 23ft
30 a ck ) 30
30 P P re
S IG s
40 40 B ac s ure 40
PS kP (4 6
IG re s ft)
50 50 P B ac su r 50
S IG kP e (6
Ba res 9ft)
60 60 P ck su r 60
S IG P re s e (92
70 B ac sur ft) 70
kP e (1
res 16
80 sur ft) 80
80 P e(
S IG 1 39

Motive Pressure PSIG

90 90
Motive Pressure PSIG

Ba ft)
ck
100 P re 100
100 ssu
PS re
110 IG ( 18 110
Ba
ck 5ft
120 P re ) 120
120 s s
PS u re
130 IG (23 130
Ba 1f
140 ck t) 140
140 P r
PS e s
150 IG su 150
Ba re
ck (27
160 Pr 7f 160
es t
su
)

170 re 170
( 32
Condensate

3f 180
Recovery

180 t)
190 190

200 200

11500
2000

6000

10500
2500

6500
5000

9000
4500

11000
3500

9500
1500

3000

4000

5500

7000
500

8500

10000

12000
7500

8000
1000

lb/hr
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14) (15) (16) (17) (18) (19) (20) (21) (22) (23) (24) (GPM)
Non-Electric
Pumps

3" x 2" Pivotrol® Pump

0 0

10 10
10 P S IG
B a ck P
20
20 P S IG re ssur 20
B a ck P e (23ft
30 re ssur ) 30
30 P S IG B e (46ft
ack P re )
40 ssure (6 40
40 P S IG 9ft)
B a ck P
50 50 P S IG re ssure 50
B a ck (92ft)
60
60 P S IG P re ss 60
B a ck P u re (116f
70 re ssu t) 70
re (13
9ft)
G

80 80
G

80 P S
90 IG B a 90
ck P r
Motive Pressure PSI

Motive Pressure PSI

e s su
100 re (1 100
100 P 85ft)
110 S IG 110
B ac
k Pr
120 e ss 120
120 ure
PS (23
130 IG B 1 ft) 130
ack
140 140 P S P re 140
IG B ss u
150 ack re 150
P re (27
160 6
1 0P s s 7f 160
S IG u re
B ac (32
t)

170 170
kP 3f
res t)
180 sur 180
e (3
190 70 190
ft)
200 200
10500

16500
14500

15000
11000

12500

15500
11500

12000

13500

14000

17500
16000
13000

17000
2500

3500

4500

5500

6000

7000

8000

8500

9000

9500
3000

4000

5000

6500

7500
2000

10000

lb/hr
(4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14) (15) (16) (17) (18) (19) (20) (21) (22) (23) (24) (25) (26) (27) (28) (29) (30) (31) (32) (33) (33) (34) (GPM)
Local regulation may restrict the use of this product below the conditions quoted. Limiting conditions refer to standard connections only.
In the interests of development and improvement of the product, we reserve the right to change the specification. TI-5-030-US 4.13

3:278
 The Pivotrol® Pump Patented Selection and Sizing

PTF4 Capacity Chart

20

40

60
Motive Pressure PSIG

80

100

120

140

160

Condensate
Recovery
180

200
14,000

16,000

18,000

20,000

22,000

24,000

26,000

28,000

30,000

32,000

34,000

36,000

38,000

40,000

42,000

44,000

46,000

48,000

50,000

52,000

Non-Electric
Pumps
Capacity, lbs/hr

Local regulation may restrict the use of this product below the conditions quoted. Limiting conditions refer to standard connections only.
In the interests of development and improvement of the product, we reserve the right to change the specification. TI-5-030-US 4.13

3:279
 The Pivotrol® Pump Patented Selection and Sizing

3" x 2" PTF-HP Pivotrol® Pump

0
20 10
20 P P SIG
40 SIG
40 PS B acB
IG B ack kP
60 ack Pr
es re
MOTIVE PRESSURE (PSIG)

Pre ss
60 ss u s ur
80 PS re e( ur
IG (92 46 e(
80 Ba ft) f t )
23
100 PS ck ft)
IG Pr
10 Ba e s
120 0P ck su
re
SI Pr (1
140 12 B G e ss 39
0 ac ur ft)
160 PS k P e
re (1
IG s 85
Ba sur ft
180 ck e( )
1
18 60 1 P 2 3
200 0P P 40 re 1ft
SIG SI PS ss )
ur
220 Ba G B IG
Ba e
ck ac (2
Pr k P ck 77
es r P f t)
240 20 ure essu ress
s
PS 416 re (3 ure
0 (
260 IG ft) 70 (32
(4 ft) 3ft
280 6 2 )
ft)
300
10,000

12,000

14,000

16,000

18,000

20,000

22,000

24,000

26,000

28,000

30,000
1,000
2,000

4,000

6.000

8,000

(lb/hr)
Condensate
Recovery

(2) (4) (8) (12) (16) (20) (24) (28) (32) (36) (40) (44) (48) (52) (56) (60) (GPM)
CAPACITY

Pivotrol® Steam Consumption Chart

Non-Electric

•
Pumps

PTC / PTF without insulation PTC / PTF with insulation

•
PTF4 without insulation PTF4 with insulation

• insulation
PTF - HP without PTF - HP with insulation
14

13
12
•
11
Steam used per 1000lbs water

10
• •
9
•
8
• •
•
7

6
•
5
• •
•
4

3
2
•
1

0
0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200

Back Pressure (psig)

TI-5-030-US 4.13

3:280
 The Pivotrol® Pump Patented Selection and Sizing

Condensate
Recovery
Non-Electric
Pumps
© Spirax Sarco, Inc. 2013

TI-5-030-US 4.13

Spirax Sarco, Inc., 1150 Northpoint Blvd, Blythewood, SC 29016 Telephone: (803) 714-2000 FAX (803) 714-2222

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