A: Generally, 2-way valves allow fluid according to the cylinders. If there is a single-acting cylinder fluid flow in a single direction when a double-acting cylinder being used, fluid is able to flow in both directions.

A: Usually, Nitrile, Viton, PTFE, and EPDM diaphragms are applicable in oil media.

A: First a fall check the connection it is accurate or not, If it is not fitted properly in and out then the valve will be not working, moreover, any dust particles inserted in the valve, then valve orifice will be blocked so the valve cannot operate, then disassembled the valve clean the dust particles after that valve can be operated.

A: 3-way valves and low-pressure valves are suitable In the backpressure.