The first Check-All Valve was designed and built for use as a pump foot valve in 1958. Soon, Check-All grew from one valve to many series of valves; from one to multiple uses; from one material to a wide variety and from one man to a factory. It grew in all respects but one element remained the same # SERVICE TO EACH CUSTOMER.\r\n\r\nToday Check-All Valve manufactures a complete line of in-line spring-loaded piston-type check valves for practically every service application. Valves are available with metal-to-metal or soft seats in sizes from 1/8NPT to 20 inch flanged connections and with pressure ratings from full vacuum to 10,000 psi.\r\n\r\nLocated in Des Moines, Iowa, with easy access to all parts of the country, Check-All uses the latest technology to design, test and manufacture each valve. From our oldest standard lines to our newest patented innovations, Check-All Valve is THE SOURCE for your check valve needs. While our check valves are often used as vacuum breaker or pressure relief devices, we are the only company dedicated solely to the design and manufacture of high quality, innovative check valves. Whether you need a high quality check valve for a standard application or have special requirements for the toughest applications, contact Check-All first and you will find quality, innovation and service above and beyond your expectations.\r\n