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Hydraulic Control Safety Valve

Hydraulic Control Safety Valve

Hydraulic Control Safety Valve

(OP)
Hello ,
I have to found out why a HCSV allows backflow.
The main controller of the valve operation is a 3way valve solenoid valve. Well the whole system (ejector,hytrol,differential control valve,powertrol valve) which manages the main valve's operation is a little bit complicated . I'm wondering if someone knows exactly the item.
(If it is better explained by a draft- elpa02@yahoo.gr)
Thanks in Advance

RE: Hydraulic Control Safety Valve

do you know what type of valve it actually is (gate, globe, ball, butterfly?)

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