The Hydraulic-operated Check Valve 

Instruction of Hydraulic-operated check valve:
Hydraulic-operated check valve allows oil to flow in only one direction, and the oil flows in the opposite direction is not allowed unless it uses the hydraulic control. It can be used as two-way on-off valve, a pressure retaining valve or a sustaining valve of the standing fluid cylinders.

Technical specification of Hydraulic-operated check valve:

Parameters Specification	03	06	10
Maximum working pressure(MPa)	0.5~31.5
Control pressure(MPa)	0.5~31.5
Maximum flow(L/min)	150	350	550
Working fluid	Mineral oil, phosphate-ester
Fluid temp(℃)	-20~70
(mm2/s)	2.8~380
Opening pressure(MPa)	a:0.15 b:0.3 c:0.6 d:1.0
Weight(Kg)	1.8	4.7	7.8

Model description

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Ningbo Power has obtained ISO9001 International Quality System Certificate in 2000. In 2001 Ningbo Power was approved provincial new and high technology enterprise and Ningbo patent pilot enterprises title. The hydraulic winches manufactured by Power have been listed in 2001 national Torch Project.

Our diversified products not only have been applied in all kinds of machinery and equipment in many fields at home, but also have been exported to USA, Japan, Singapore, Malaysia, Iran and Korean aboard.