US PARKER Parker hydraulic control check valve introduction

Originally imported from the United States PARKER Parker hydraulic control check valve is a valve that relies on the control of fluid pressure, which can make the check valve flow in reverse. This type of valve occupies a more important position in the hydraulic support equipment of coal mine machinery. The difference between the hydraulic control check valve and the ordinary check valve is that there is one more control oil circuit K. When the control oil circuit is not connected to the pressure oil, the hydraulic control check valve works like a normal check valve, and the pressure oil It only flows from the inlet port to the outlet port and cannot flow in the opposite direction.
 Parker hydraulic control check valve
There are many types of valve products produced by Parker in the United States. There are several series of valves for the type of valve with hydraulic control check valve. Different products have different application scopes but the approximate functions are the same. Parker hydraulic control check valves mainly have the following features:
 
*Maintenance pressure: Ordinary spool-type reversing valves have gap leakage and can only hold pressure for a short time. Parker hydraulic control check valve, using the tightness of the closing of the cone valve, keeps the oil line for a long time.
 
*Support of hydraulic cylinder: connecting the hydraulic control check valve to the oil passage in the lower chamber of the hydraulic cylinder can prevent the hydraulic cylinder piston and the slider from moving down.
 
* Realize the locking of the hydraulic cylinder: When the reversing valve is in the neutral position, the two hydraulic control check valves are closed, and the oil in the two chambers of the hydraulic cylinder can be tightly sealed. At this time, the piston cannot move due to the external force.
 
* Large flow drain: The effective working area of the two chambers of the hydraulic cylinder varies greatly. When the piston is retracted, the amount of oil discharged from the right chamber of the hydraulic cylinder suddenly increases. The use of Parker hydraulic control check valve, when the hydraulic cylinder piston is retracted, the control pressure oil will open the hydraulic control check valve, and the right chamber oil can be smoothly discharged.
 
* As a filling valve: The hydraulic control check valve is used as an oil filling valve to complete the oil filling function.
 
The common hydraulic control check valves of American Parker PARKER are:
 
Superimposed hydraulic lock CPOM2DDV
 
Superimposed hydraulic lock CPOM3DDV
 
Plate type hydraulic control check valve CPS series
 
American Parker hydraulic control check valve SVLA1006P07
 
PARKER hydraulic lock SVLB1046E40S
 
PARKER hydraulic control one-way V-SVLB1086E32S