Industrial Grey PVC-U Pipe And Fittings Industrial Grey PVC-U Valves
PVC-U Pressure Retaining (Back Pressure) / Relief Valves
Operational Overview: Back Pressure (installed inline) Back pressure valves apply positive discharge pressure to a metering pump system to prevent siphoning and eliminate varying dosage rates caused by fluctuating downstream pressure. The diaphragm is held against the seat by an internal spring. When the preset pressure is exceeded, the diaphragm is forced up and chemical flows through the valve to the injection point. Operational Overview: Pressure Relief (installed on branch of main line) Operates when the pressure in the chemical system exceeds the preset pressure of the valve. The diaphragm is held against the valve seat by an internal spring. When the preset pressure is exceeded the diaphragm is forced up and the chemical flows out the relief port, back to the chemical tank or suction side of the pump.
PVC-U Pressure Retaining/Relief Valve Type 586 ( Georg Fischer)
• Corrosion-free plastic union with no exposed metal parts • Maximum space-saving due to non-rising spindle
SIZE
PRESSURE RANGE (Bar)
EPDM
FPM
1/2” 3/4”
0.5 - 9 0.5 - 9 0.5 - 9 0.5 - 9 0.5 - 9 0.5 - 9
161 586 302 161 586 312 161 586 303 161 586 313 161 586 304 161 586 314 161 586 305 161 586 315 161 586 306 161 586 316 161 586 307 161 586 317
1”
1.25”
1.5”
2”
PVC-U Pressure Retaining/Relief Valve ( GRIFFCO)
• Small compact footprint • Adjustable pressure settings • Anti-siphon function • Completely machined body • Union style connections
SIZE
PRESSURE RANGE (Bar)
FPM SEALS
1/2”
0.5 - 16
BPU 050-P-16
3/4”
0.5 - 16 0.5 - 16
BPU 075-P-16 BPU 100-P-16
1”
32 PAAS Source Book
www.paas.com.au
V 4.6
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