This valve is used to regulate the pressure of the pump's forked fluid line. 

It maintains the pressure which is persistent and lower than the fluid origin not to affect the main fluid line.

This valve is a normal open type. 

The spool's flow regulation or close maintains the main system's pressure. 

The fluid floating causes the pilot pressure to generate pressure difference (port 2 to port 1) and then causes the unbalanced pressure of the two sides of the spool. 

The spool flow changes from big to small or closes to reduce the pressure.

Rated Flow : 

60 l/min 

Max. pressure :

350 bar

Working temperature :

Min. -20℃ , Max. 90℃ , with standard BUNAN gaskets

Min. -20℃ , Max. 120℃ , with optional VITON gaskets on request

Fluid :

best use mineral oil with viscosity ranging between 10 and 200 cSt

Filter :

25 micron or better

Cavities :

see cavity data ST11A

Installation :

before screwing the cartridge on the valve body, ascertain to provide suitable gasket lubrication with clean oil and also be sure to screw the cartridge manually in to reach against the gaskets in the valve body.

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