Bellow Needle Valve
Bellow Needle Valve
- Nominal diameter: 1/8″～2″
- Pressure class: 1000~10000PSI
- working temp: -320°F to 1148°F（-196℃ to620℃）
- Packing: PTFE, peek, graphite, cemented carbide
- Valve operation: Straight handle, handwheel, etc
- Spool type: Needle type, adjustable type
- Connection: Adapter, ferrule, thread, union, flange
- body material: A105N, 304, 316, 316L, C276 Hastelloy, Menger alloy, TA2 titanium alloy, 904L, etc
Bellow Needle Valve Introduction
- 1. Working pressure: ≤ 16MPa;
- Service temperature: – 29 ℃ ~ + 570 ℃;
- Specification and size: dn10 ~ DN25;
- Connection type: flange type;
- Structural features: conical seal;
- Valve body material: carbon steel, stainless steel;
- Applicable media: corrosive and non corrosive media such as water, oil and gas;
- Manufacturing standard: ASME B16.34;
- Valve inspection and test standard: API 598;
Bellow Needle Valve Features
- 1. Double sealing design (bellows + packing) if the bellows fails, the valve stem packing will also avoid leakage;
- No fluid loss, reduce energy loss and improve plant equipment safety;
- Long service life, reduce maintenance times and reduce operating costs;
- The rugged bellows seal design ensures zero leakage of the valve rod and provides maintenance free conditions;
- The gas medium valve seat adopts PTFE and peek soft sealing materials to improve the sealing performance of the valve;
- when the medium temperature is – 23 ℃ ~ 232 ℃, PTFE is used as the filler for the valve, and graphite is used when the medium temperature is 620 ℃.