Flange Low Lift Safety Valves can be used on systems where the discharge is relatively simple. The pressure in the discharge system can be atmospheric,Website:://.vatacvalve.net, at a constant level or where the pressure may build up to a maximum of 10% of the set pressure. When a constant back pressure exists, the valve should be set at the differential pressure» Manufactured under ISO 9001:2008 Management System, with CE PED Certified» Design Standards: ASME PTC 25.3, API RP 520, 521, API 526, API 527, EN ISO 4126» Face to Face: ASME B16.10, EN558-1 / DIN 3202» Ends Standards: ASME B16.5, DIN 2543~2545, EN 12627» Testing Standards: ISO 5208, API 598, DIN 3230, MSS SP-117» Materials: Carbon Steel, Stainless Steel, Alloy Steel, Duplex or Other Specials » Ends Connections: Flanged(FF, RF, RTJ) to international standards » Sizes Range : DN15 through DN300, 1/2”~12”» Pressure Class: ANSI CL150 to CL1500, PN16 to PN260