Industrial Valves for Fluid Isolations & Regulation

 
 

 

 

Single Door Butterfly Type Reflux Valve & Multi-Door Reflux Valves


Fouress have developed reflux valves in two varieties

  • Single door Butterfly type Slanting Disc Check Valve.
  • Free acting Multi-door Swing Check Valve which does not require any external source of power.

Valve Range

  • Size : 500mm to 2000mm
  • Free-Acting series 750 – 2000 mm for 6,10,16 bar ratings:

Design Features

  • The body is spherical shaped consisting of two halves sectioned at an angle.
  • The two body halves inlet and outlet casting bolted at centre flange.
  • The inlet body casting has the flow guides and seats for door.
  • The faces of body seat and door seats are provided with gun metal seat.
  • The door castings are supported on stainless steel shafts.
  • The shaft run in self lubricating bearings. An inspection cover is provided in the outlet casting.

 

 

 

Features
  • Short Travel – the valve seats are inclined thus providing shorter travel and providing stops to limits the door travel.
  • Low friction – provided by self lubricated bearings and complete absence of shaft seats
  • High closing moment – provided by weighted door tips. This ensures that doors begin to close at the earliest possible moment.

Triple Eccentric Three Function Valves

  • Double eccentric disc mating with a tilted cone eccentric seat ring.
  • Replaceable seat and disc ring providing metal to metal contact

  • Design feature allows valve to crack open to balance the pressure initially.

  • Control function with electric or manual drive synchronized with pump start-up.

  • Fast free closure aided by dead weight on reversal of flow with full stroke dampening.

  • 90% fast closing and 10% of the closure cushioned to avoid slam shutting.

Slanting Disc Check Valve

  • Full stroke damping
  • Slow opening, controlled closing

  • When valve opens , oil from the cylinder will be pushed inside pressurized accumulator through flow control valve. By adjusting flow control valve and nitrogen pressure in the accumulator, the opening time can be fine tuned even at site.

  • While closing the oil from the cylinder will be pushed inside non-pressurized oil reservoir through flow control valve. The closing time can be controlled by adjusting flow control valve.

  • The eccentricity provided in the disc will ensure that the self opening and closing characteristics are achieved.