Valves
Valves are flow-control devices that start, stop, throttle or direct fluid and gas in piping systems, ranging from simple manual isolation valves to actuated control and safety valves. They are used across oil and gas, water, chemical, power, HVAC and general process plant wherever flow must be controlled, isolated or protected, and they are among the most specified items in any piping package. This overview spans the principal valve families rather than a single type: quarter-turn isolation valves such as ball and butterfly; multi-turn isolation valves such as gate and globe; check (non-return) valves; control valves; and pressure-relief and safety valves. Sizing, pressure class and design follow the relevant bodies for each family, including API and ISO standards for industrial valves, ASME B16.34 for design, and ASME pressure classes from 150 to 2500, with face-to-face and end connections to ASME B16.10 and B16.5. Materials range across carbon steel (ASTM A216 WCB), stainless and duplex grades, bronze and exotic alloys, with trim, seats and seals selected for the service; soft seats use PTFE or elastomers, metal seats suit high temperature and abrasive duty. Testing commonly follows API 598 or ISO 5208, with fire-safe (API 607) and low-emission options where required, and NACE MR0175 compliance for sour service. At Himalay, valves are supplied to your specification with type, class, trim and end connection agreed up front; material traceability, test certificates, PED/CE marking, SABER for the Saudi market, and NACE compliance can be coordinated where specified as part of the standard order flow.
