Condensate pumps Mechanical pumps and pumps traps
9
Inlet reservoir piping When draining a single piece of equipment and a receiver is not supplied ahead of the pump, install with sufficient piping as given in the table below, and use a 0.3m minimum filling head. This will prevent any flooding of the equipment while the pump is discharging. Metres of reservoir piping above top of pump when pressure powered pump is installed without a receiver. Pump sizes 1, 1½, 2 and 3 x 2. Liquid Load kg/h Inlet Check Valve and Pipe Size 1 1½ 2 3 277 or Less 1.2m 454 2m 1.2m 681 3m 1.5m 1.2m 908 4m 1.8m 1.5m 1362 3m 2.1m 1816 3.6m 3m 2270 3.6m 1.2m 2724 1.5m 3178 1.8m 3632 2.1m 4086 2.4m 4540 2.7m 9994 3m
Inlet receiver capacities Sufficient receiver volume is needed above the filling head level to accept the condensate reaching the pump during the discharge stroke. The receiver can be a length of pipe of large diameter or a tank. A vent for flash steam and any incondensable gas is essential and an overflow may be provided as shown.
Recommended Overflow Pipe Size
Pump Size ins
Receiver Capacity Minimum
Suggested Receiver Size using standard Piping
Min Vent Pipe Size
Litres
Galls
mm ins
mm
ins
1
7
1½
0.60 m 24" of 6"
50
2
40
1½
1½
16
3½
0.65 m 26" of 8"
65
2½
50
2
2
24
5½
0.65 m 26" of 10"
80
3
65
2½
9.1 80
3
39
8½
1.10m 44" of 10"
100
4
80
3
TI-P135-03 ST Issue 1
Page 4 of 4
PPC and PPF Pressure Powered Pumps
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