性能要求油研液控单向阀，YUKEN单向阀特卖

性能要求油研液控单向阀，YUKEN单向阀特卖

简述：

and prevent flow in the reverse direction, 

in reversed free flow (Fig. a), the internal drain type is normally used.  

When the back pressure is applied to the outlet 

side P1 (Fig. b), be sure to use the external drain type. 

until operated by pilot pressure to a llow free reverse flow.  

The specified cracking pressure is required to open 

the valve to allow free flow direction.

That depends on the pressure of the inlet side P2 in the reversed free flow. 

This value can be determined from the characteristics chart. 

These check valves allow flow in one direction 

When the outlet side P1 is directly connected to the tank  

特点：

within NAS 1 638-Grade 12.  Use 25 µm or finer line filter.

and oil temperatures given above.

Due caution must be paid to maintaining control over 

Viscosity ranging between 15 - 400 mm /s (77 - 1800 SSU).  

Oil temperatures between -15/+70°C (5 - 158°F).  

Use hydraulic fluids which satisfy the recommended viscosity 

lead to breakdowns and shorten the life of the valves.  

contamination of the hydraulic fluids which may otherwise 

Please maintain the degree of contamination 

性能要求油研液控单向阀，YUKEN单向阀特卖