PAAS SB 4.4 (Oct 2021)

Industrial Grey PVC-U Pipe And Fittings PVDF Valves

PVDF Pressure Retaining / Relief Valve Type 586 ( also used as back pressure valve)

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.

PVDF Pressure Retaining/Relief Valve Type 586 ( Socket Fusion Unions)

SOCKET FUSION ENDS

SIZE PRESSURE RANGE

FPM CODE

d20 d25 d32 d40 d50 d63

0.5 - 9 0.5 - 9 0.5 - 9 0.5 - 9 0.5 - 9 0.5 - 9

185 586 112 185 586 113 185 586 114 185 586 115 185 586 116 185 586 117

PVDF Pressure Retaining/Relief Valve Type 586 ( IR Weld Unions)

IR WELD UNION

SIZE PRESSURE RANGE

FPM CODE

d20 d25 d32 d40 d50 d63

0.5 - 9 0.5 - 9 0.5 - 9 0.5 - 9 0.5 - 9 0.5 - 9

185 586 512 185 586 513 185 586 514 185 586 515 185 586 516 185 586 517

PVDF Pressure Retaining/Relief Valve Type 586 ( IR Weld Spigot)

IR WELD SPIGOT

SIZE PRESSURE RANGE

FPM CODE

d20 d25 d32 d40 d50 d63

0.5 - 9 0.5 - 9 0.5 - 9 0.5 - 9 0.5 - 9 0.5 - 9

185 586 012 185 586 013 185 586 014 185 586 015 185 586 016 185 586 017

168 PAAS Source Book

www.paas.com.au

V 4.4

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