All check valves have a neoprene ball seat which prevents gas backflow into the piping system as required by NFPA Standard 51.
These valves are designed for pipeline service with any common, non-corrosive, non-toxic industrial gas.
The V-27 shutoff valve is used in flame-hardening, machine cutting, etc., for quick-acting on/off control of oxygen and fuel gas with a single lever.
The V-31 shutoff valve is used in oxyfuel gas welding for control of stop/start operations. Two models are available which vary only in pilot light assembly.
All check valves have a neoprene ball seat which prevents gas backflow into the piping system as required by NFPA Standard 51.