NMX-CC-9001 Certificate (Mexican Standards ISO-9001) No. 0552/2007 issued by PEMEX in accordance with ISO-9001 Quality Assurance System.
Safety and Relief Steel
These valves work to release overpressure in a piping system. WALWORTH offers these kinds of valves as a solution for the automatic release of pressure from either a boiler, pressure vessel or other systems when the pressure or temperature exceeds preset limits. They made from carbon steel, or stainless steel and may be used for any fluid (gas, steam or water). Pressure and relief valves automatically release the pressure when the over pressure is achieved and can be used as a safety valve or a relief valve depending on application.
Certificate of Reliable Supplier No. 199/07 issued by CFE in accordance with ISO-9001 Quality Assurance System.
API-6A Certificate No. 6A-0234 from American Petroleum Institute to apply on valves at PSL, 1 through 4.
API-6D Certificate No. 6D-0097 issued by American Petroleum Institute to apply on Gate valves, Plug valves, Ball valves and Check valves manufactured in accordance with API-6D specification.
API-600 Certificate No. 600-0109 issued by American Petroleum Institute to apply on Bolted Bonnet Steel Gate Valves manufactured in accordance with API-600 specification.
API-602 Certificate No. 602-0024 issued by American Petroleum Institute to apply on Compact Steel Gate Valves, Compact Steel Globe Valves, and Compact Steel Check Valves manufactured in accordance with API-602 specification.
Certificate API-594 No. 594-0007 issued by American Petroleum Institute to apply on Check Valves-Type A; Check Valves Type Bmanufactured in accordance with API-594 specification.