We produce difference brass/bronze Check valve, the brass check valve have swing and spring check valve, horizontal check valve usually called NRV check valve.
A check valve, clack valve, non-return valve, reflux valve, retention valve or one-
way valve is a valve that normally allows fluid (liquid or gas) to flow through it in centrifugal pumps to prevent water movement in the opposite direction.
Swing check valve are used on pipelines of hot and cold water, compressed air, liquid hydrocarbons, and also on the intake in centrifugal pumps to prevent water movement in the opposite direction.
vertical Check Valve other person called foot valve, bottom valve or check valve with net. check valve size from 1/2” to 4”. The check valve thread standard: ISO228/ISO7. material have brass and zinc-alloy available.