ISO – International Organization for Standardization – valve standards:

ISO 683-15:1992Heat-treatable steels, alloy steels and free-cutting steels; part 15: valve steels for internal combustion engines

ISO 4126-1:2004Safety devices for protection against excessive pressure – Part 1: Safety valves

ISO 4401:1994Hydraulic fluid power – Four-port directional control valves – Mounting surfaces

ISO 4411:1986Hydraulic fluid power; Valves; Determination of pressure differential/flow characteristics

ISO 4422-4:1997Pipes and fittings made of unplasticized poly(vinyl chloride) (PVC-U) for water supply – Specifications – Part 4: Valves and ancillary equipment

ISO 5208:1993Industrial valves; pressure testing of valves

ISO 5209:1977General purpose industrial valves; Marking

ISO 5210:1991Industrial valves; multi-turn valve actuator attachments

ISO 5211:2001Industrial valves – Part-turn actuator attachment

ISO 5599-1:2001Pneumatic fluid power – Five-port directional control valves – Part 1: Mounting interface surfaces without electrical connector

ISO 5599-2:2001Pneumatic fluid power – Five-port directional control valves – Part 2: Mounting interface surfaces with optional electrical connector

ISO 5599-3:1990Pneumatic fluid power; five-port directional control valves; part 3: code system for communication of valve functions

ISO 5752:1982Metal valves for use in flanged pipe systems; Face-to-face and center-to-face dimensions

ISO 5781:2000Hydraulic fluid power – Pressure-reducing valves, sequence valves, unloading valves, throttle valves and check valves – Mounting surfaces

ISO 5996:1984Cast iron gate valves

ISO 6002:1992Bolted bonnet steel gate valves

ISO 6182-1:2004Fire protection – Automatic sprinkler systems – Part 1: Requirements and test methods for sprinklers

ISO 6182-2:1993Fire protection; automatic sprinkler systems; part 2: requirements and test methods for wet alarm valves, retard chambers and water motor alarms

ISO 6182-3:1993Fire protection; automatic sprinkler systems; part 3: requirements and test methods for dry pipe valves

ISO 6182-4:1993Fire protection; automatic sprinkler systems; part 4: requirements and test methods for quick-opening devices

ISO 6182-5:1995Fire protection – Automatic sprinkler systems – Part 5: Requirements and test methods for deluge valves

ISO 6263:1997Hydraulic fluid power – Compensated flow-control valves – Mounting surfaces

ISO 6264:1998Hydraulic fluid power – Pressure-relief valves – Mounting surfaces

ISO 6403:1988Hydraulic fluid power; valves controlling flow and pressure; test methods

ISO 6552:1980Automatic steam traps; Definition of technical terms

ISO 6553:1980Automatic steam traps; Marking

ISO 6554:1980Flanged automatic steam traps; Face-to-face dimensions

ISO 6704:1982Automatic steam traps; Classification

ISO 6948:1981Automatic steam traps; Production and performance characteristic tests

ISO 7121:1986Flanged steel ball valves

ISO 7244:1984Air distribution and air diffusion; Aerodynamic testing of dampers and valves

ISO 7259:1988Predominantly key-operated cast iron gate valves for underground use

ISO 7368:1989Hydraulic fluid power; two-port slip-in cartridge valves; cavities

ISO 7508:1985Unplasticized polyvinyl chloride (PVC-U) valves for pipes under pressure; Basic dimensions; Metric series

ISO 7714:2000Agricultural irrigation equipment – Volumetric valves – General requirements and test methods

ISO 7790:1997Hydraulic fluid power – Four-port modular stack valves and four-port directional control valves, sizes 02, 03 and 05 – Clamping dimensions

ISO 7841:1988Automatic steam traps; determination of steam loss; test methods

ISO 8659:1989Thermoplastics valves; fatigue strength; test method

ISO 9635:1990Irrigation equipment; hydraulically operated irrigation valves

ISO 9644:1993Agricultural irrigation equipment; pressure losses in irrigation valves; test method

ISO 9911:1993Agricultural irrigation equipment; manually operated small plastics valves

ISO 9952:1993Agricultural irrigation equipment; check valves

ISO 10418:2003Petroleum and natural gas industries – Offshore production installations – Basic surface process safety systems

ISO 10423:2003Petroleum and natural gas industries – Drilling and production equipment – Wellhead and Christmas tree equipment,

ISO 10497:2004Testing of valves – Fire type-testing requirements

ISO 10522:1993Agricultural irrigation equipment; direct-acting pressure-regulating valves

ISO 10631:1994Metallic butterfly valves for general purposes

ISO-STANDARD-BALL-VALVE

ISO-STANDARD-FLANGE-PLUG-VALVE

ISO-STANDARD-GATE-VALVE