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Relief

RL4 Series

Handle for field maintenance
Externally adjustable pressure settings while valve is in operation
Seven different springs
Manual override option with positive stem retraction is available for the full working pressure range
Color coded springs and labels indicate spring cracking range

RH4 Series

Eight springs
Manual override option with positive stem retraction is available for pressures up to 1,500 psi (103 bar)
Preset from factory and comes with standard springs

HPRV – PED High Pressure Proportional Relief Valve

Captured moulded seat design is blow-out and chip resistant
Color coded springs and labels indicate spring cracking range
Unique Tru-Loc facility prevents accidental adjustment
Low friction stem seal design prevents friction which increases accuracy of cracking pressure and reseat pressure
Balanced poppet design ensures consistent cracking pressure regardless of system back pressure
Multiple end connections available

HPRV – PED Low Pressure Proportional Relief Valve

Pressure settings are externally adjustable. Six different spring ranges provide greater system sensitivity and enhanced performance
Back pressure has minimum effect on cracking pressure
Color coded springs and labels indicate spring cracking range
Orifice sizes: 5.2mm (0.203")
Lock wire feature secures a given pressure setting
Multiple end connections available

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