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 ℃.