Check valve

Check valves are generally used in drip irrigation emitters and irrigation sprinklers.Check valves are available in three bonnet designs. The first design is the bolted bonnet, with male-female joint, spiral wound gasket. The second design is the welded bonnet, with a threaded and seal welded joint. On request a full penetration strength welded joint is available. The other design is the pressure seal bonnet, with a threaded and pressure seal bonnet joint.There are three different design configurations of the check valves. They are piston check, swing check, and ball check designs.