Tyco Valves & Controls - Cash Valve manufactures a line of cryogenic valves and controls used for oxygen, acetylene, nitrogen, hydrogen, argon, helium, and carbon dioxide services. Cryogenic valve and control products include: pressure reducing valves, pressure build-up regulators, back pressure valves, economizer valves, combination valves, low temperature cut-off valves, safety relief valves, shut-off valves, final line regulators, and high purity valves.