Pressure and temperature control valves regulate the temperature and pressure levels of industrial and commercial equipment. Pressure or temperature relief valves open when temperature or pressure levels in a system exceed a desired level. Pressure or temperature regulators detect changes in pressure and temperature levels and adjust valves to maintain a desired level. Mixing valves blend fluid at varying temperatures to produce a desired output temperature. Vacuum and air pressure release valves remove trapped pockets of air in systems and help pipes drain. Unloader valves open to release excess pressure in pumps. Steam separators and spargers filter and clean steam for specific applications. Rupture discs and water hammer arrestors prevent damage caused by overpressure conditions. Air admittance valves remove trapped air or gas in piping, hydronic, and steam heating systems. Condensate coolers reduce the temperature of hot water and condensate by blending it with cold water.