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butterfly valves india
 
 

BUTTERFLY VALVES
 
 
   
 
Butterfly Valves
   
 

R & D Multiple’s butterfly valves have been very commonly used in various water supply schemes all over India for past 2 decades. Irrespective of sizes, pressure ratings, fluids handled, type of operators etc. our BF valves are the most preferred choice of the discerning customers. We have also kept our valves in tune with the latest technological advancements in materials, manufacturing, pattern making & foundry & operators fields. This has enabled us to offer valves from 50mm to 3500mm sizes in pressure ratings of 6 to 40bar, in Cast / Fabricated constructions in Cast Iron, Carbon & Alloy Steels & Stainless Steels & also rubber-lined variety. The types of operators offered are Manual, Electrical, Pneumatic & Electro- Hydraulic. We also supply large Hydraulically operated Pump discharge valves (HOPD).
   
 
In short we provide techno-commercially best solution to any installation in which use of Butterfly Valves is envisaged.
   
  SALIENT FEATURES :
   
  A. Large DF Butterfly Valves :
 
  • Sturdy & robust construction.
  • Disc assembly perfectly centered & secured in valve Body bore.
  • Seat Ring cone finished in- situ.
  • Flow through disc ensuring minimum pressure drop.
  • Secured Disc-Shaft Connection.
  • Cast & Fabricated constructions possible.
  • Compliance with: IS 13095, AWWA C504, BS 5155 standards.
  • Manual, Electrical, Pneumatic & Electro- Hydraulic Operators.
  • NDE side thrust arrangement.
  • Shaft Seals comprising of elastomeric ‘O’ rings & ‘Lip seals’.
  • Disc Seal secured in- between machined grooves in Disc & Clamping Ring making it completely washout-proof. 
  • Perfection of alignment of components, fine finishing of rubbing surfaces, controlled seal dimensions ensure very smooth operation & less operating torque requirement.
   
  B.  Wafer-lined Butterfly Valves :
 
  • Liner locked in  precision machined grooves in valve body.
  • Sealing ribs on end faces with enough protrusion to ensure drop-tight end face joints.
  • Sturdy & long shaft bearings ensuring precise rotation of the disc assembly in the body.
  • Double shaft seal which precludes leakage possibility.
  • Sturdy disc –shaft connection.
  • Robust Hand Lever mechanism without backlash & possibility of over-travel due to provision of in-built, positive travel limit stops.
  • Possibility of offering Electrical / Pneumatic actuator.
   
  SPECIAL FEATURES :
   
  A. Large DF Butterfly Valves :
 
  • Flow through disc ensuring minimum pressure drop.
  • Disc locking arrangement optionally available.
  • Wide options in : Materials of construction,
    : End Connections,
    : Face to Face dimensions.
  • Shaft Bearings not wetted by fluid handled ensuring low frictional torque & long bearing life.
  • Concentric, Single, Duo & Tri-eccentric constructions offered for appropriate applications.
  • Endurance Life Cycle Testing carried out for prototype sample sizes as per AWWA C504 covering all the range of manufacturing.
  • Perfection of alignment of components, fine finishing of rubbing surfaces, controlled seal dimensions ensure very smooth operation & less operating torque requirement.
   
  B.  Wafer-lined Butterfly Valves :
 
  • Optimized liner dimensions ensuring efficient sealing performance.
  • Critically controlled interference between the Rubber liner & the Disc sealing surface ensuring leak-tightness & lower operating torque at the same time leading to long seal life.
  • Stainless Steel Investment cast Disc as a standard scope of supply.
  • For HOPD & Special requirements, contact our Marketing office.
   
   
 
 
Copyright @ R&D Multiples All Rights Reserved.
 
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