Airmax pneumatics presents pneumatic cylinder operated knife gate valves. The stainless steel inner body is welded to the cast iron gland. The pvc coating to the gland provides maximum resistance to corrosion and wear, and the stainless steel knife plate is precision-buffed, offers smooth surface finish. Knife edge cuts off and offers leak light shut off, even heavy or high-viscosity fluids. It has tefion-impregnated layered with moulded silicon rubber. The chemical resistant gasket provides total sealing. Two bosses are welded to the valve seat. The plane finished surface of the valve seat prevents the deposition of heavy fluids, which could build up and swamp.