Mono Flange Valves



  • Monoflange valves work in conjunction with a pre-installed primary isolate valve. They provide compact instrument double block and bleed valving. This range is also available in both single block and single block and bleed configurations.

Bonnet Assembly

  • Screwed bonnet design.
  • Bonnet- back seated blow out proof.
  • Spindle – ground and thread rolled.
  • Packing below thread.
  • Spindle tip – non rotating tip shut off type – hardfaced.
  • Regulating – stellited and soft seated.
  • Bonnet Pusher – silver plated for anti galling freezing for increased stem cycle life.
  • Dust cap protects stem threads from externals contamination.
  • Leak tight seal with low operating torque

Material of Construction

  • Size: 1/4″, 1/2″
  • End Connection: NPT, BSPT, BSP & Socket Weld.
  • Working Pressure: 6000 psi (413 bar)
  • Temperature Rating: PTFE 450° f(232°c) Grafoil 700° f (371°c)
  • Material: SS 316, SS 304, Monel, C.S
  • Stem Packing: PTFE, Grafoil.
  • All valves are 100% factory tested prior to shipment.

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