Cheonsei KEMPION PDS Series, Instruction Manual, Page: 19 / 20

19
Back Pressure Valve
According to the conditions of the piping, the discharge rate may be excessive or the pumping
liquid may be continuously leaked in spite of stopping the pump which is caused by overfeed or
siphon phenomena. The back pressure valve is for preventing such things.
Safety Valve(Relief Valve)
When the discharge pressure increases to more than a setting point due to choking the valve with
debris or closing the valve, the safety valve will open automatically to relieve the pressure.
Relief valve prevents pump and piping from damages.
18-1 Check Valve
Model : PDS-5,10-P , F , S
17
Accesories
18
Structure & Part Name of Check Valve
No. Part Name Q’ty
W1 Head 1
W2 Ball Guide 4
W3 Check Ball 4
W4 Spring 4
W5 Ball Stopper 4
W6 O-ring 8(10)
W7 Joint 2
W8 Joint Cover 2
W9 Washer(Flat) 8
W10 Washer(Spring) 8
W11 Cap Nut 8
W12 Valve Adaptor 2
W4 is only for high viscosity type.
W12 is only for PDS-10 type.
W11
W9
W8
W7
W6
W5
W3
W6
W12
W10
W4
W2
W1
W4