4 inch Cylinder Valve
The 4 inch cylinder valve is made of AISI304 Stainless Steel. It is designed as a back pressure type valve. The piston in the valve is equipped with a rubber seal that keeps the HFC-227ea Clean Agent under pressure within the cylinder. A small hole in the piston allows cylinder pressure to be equalized on both sides of the piston. Since the area at the top of the piston is greater than the area at the bottom of the piston, the net force seals the piston against the valve discharge outlet. When cylinder pressure on the top of the piston is relieved by means of automatic or manual actuation, there is only cylinder pressure acting against the piston seal, and the piston slides to its full open position, allowing HFC-227ea discharge through the valve outlets.
The 4 inch cylinder valves are installed in 1200 lb cylinders in Engineered Systems.