The A-type straight through one-way valve and AJ type right angle one-way valve are both cone valve structures, which only allow oil to flow freely from one direction and do not allow reverse flow. They are equipped with springs to keep the valve core in a closed state. The structure is simple, the performance is reliable, and the pressure loss is small. They are mainly used at the outlet of pumps as back pressure valves and one-way valves.  

A. AJ type straight through right angle one-way valve