Mechanical valve ( 3/2 way, port size 1/8 & 1/4 ) is operated manually. It is in sliding column structure so that the control force is not influenced by working pressure.
Available models: G321 G322 ( no button ), G321R G322R ( roller ), G321PP G322PP ( flat button ), G321PPL ( convex button ), G321PB G322PB ( ิีmushroom button without lock ), G321EB G322EB ( mushroom button with lock ), G321TB G322TB ( single-step twisting button ),G321LB G322LB ( two-step twisting button )