Wholesale Ec360 Control Relief Valve - HOV SERIES COUNTERBALANCE VALVES FOR OPEN CENTRE – Hanshang Hydraulic

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Wholesale Ec360 Control Relief Valve - HOV SERIES COUNTERBALANCE VALVES FOR OPEN CENTRE – Hanshang Hydraulic Detail:

When pressure at V2 rises above the spring bias pressure, the check seat is pushed away from the piston and flow is allowed from V2 to C2. When load pressure at C2 rises above the pressure setting, the direct operated, differential area, relief function is activated and flow is relieved from C2 to V2.With pilot pressure at V1-C1, the pressure setting is reduced in proportion to the stated ratio of the valve, until opening and allowing flow from C2 to V2. The spring chamber is drained to V2,and any back-pressure at V2 is additive to the pressure setting in all functions.

Model	HOV-3/8-50	HOV-1/2-80	HOV-3/4-120
Max Flow rate（L/min）	50	80	120
Max operating pressure（MPa）	31.5
Pilot ratio	4.3:1	4.3:1	6.8:1
Valve body（Material）Surface treatment	（Steel body）Surface clear zinc plating
Oil cleanliness	NAS1638 class 9 and ISO4406 class 20/18/15

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