Operating Manual
Single Mechanical Seal - 0.5 Bar maximum.
Any further increase in pressure will result in lip
seal failure.
Double Mechanical Seal/Packed Gland Seal
- 1.0 bar higher pressure compared to the
discharge pressure of the pump. If the discharge
pressure fluctuates set the flushing pressure to
suit the maximum condition.
For guidance the pressure at the seal is
approximately
2
/
3
of the pumping pressure.
The flushing flow rate must be adequate to
ensure that the temperature limitation of the
seals is not exceeded. Contact your supplier
for further information on the recommended
flow rate for the product seal fitted.
The choice of flushing fluid is dependant upon
the pumping media and duty conditions i.e.
pressure and temperature. Usually water is
used for cooling or flushing water soluble
products. For advice on selecting a suitable
flushing fluid please contact the supplier.
5.6 Flushed Seal Housing Connections
5.7 Flushing Fluid
5.8 Flushing Pressure and Flow Rate
19
Pump Model Single/Double Packed
Mech. Seal Gland
D 4 1/8” 1/4”
D 5 1/8” 1/4”
D 6 1/8” 1/4”
All connections BSPT or NPT as specified at
the time of order.
