Purpose

Butterfly valve is a flow regulating disc valve, rotary valves in which a disc – shaped closure member is rotated through 90ΒΊ, or about to open or close the flow passage. The main function of these valves is to control the flow of liquids through a section of pipe. Butterfly valves are mainly used in waste treatment systems.

OPERATING PRINCIPLES

Butterfly Valve movement of the disc will depend on whether the valve is open or closed either partially or completely. If the valve is opened partially, it means that the disc will not be rotated a full one quarter turn, thus it cannot provide unrestricted passage. This means that, smaller amounts of fluid or air will pass through. However, if the valve is opened completely, the disc will be rotated 90 degrees then larger amounts of air or fluid will pass through.


JD. Controls Wafer Type Butterfly Valve have been developed with extensive application, design and manufacturing expertise. J. D. High Performance Slim-Seal, Concentric design Butterfly Valves are reliable, maintenance free shutoff with permanently gas-tight seal with an integrally moulded or replaceable elastomer body liner. J. D. Butterfly Body having two nos. flange locating holes for sizes up to 12 and from size 14 and above 04 nos. for easy alignment of valve during installation. Flange locating hole confirm to as per ANSI B 16.5 Class 125 & Class 150 / BS 10 Table D, E, F / PN 6, PN 10, PN 16 or other international standard. J. D. High performance butterfly valves are also available with Full-Lugs type body with raised faces and flanged ends connection.

JD. Butterfly Valve, Wafer Type, Slim-Seal design, maintenance free shutoff. This butterfly valves excess other conventional valves such as gate valve and globe valves in all aspects, especially in terms of light weight, less number of component, no flange gaskets required and economical operation and maintenance costs.

JD. Slim Seal design Butterfly Valves body seat mechanism have a very low torque, tight shut off with zero leakage, compact actuator selection, and long life smooth easy operation. The slim-seal, center disc design valves are widely available with different combination of body, seat & disc materials to satisfy the need of most industrial application.

SALIENT FEATURES

  • Concentric, Slim-Seal Design
  • Greater Sealing Capacity
  • Soft Seat Design
  • Lower Torque with any fluid
  • Permanently tight closure
  • Bi-Directional Valve
  • Optimum operation under Vacuum Condition
  • Suitable for On-off as well as Throttling Service
  • Materials for almost all media
  • Short Face To Face Dimension
  • Wafer Design Body
  • Long Service Life
  • Smooth, Easy Operation
  • Maintenance Free Version
  • Less Weight, Easy To Install

SPECIAL OPTIONS

  • Off Set Disc Design Butterfly Valve for high pressure & temperature service.
  • Moulded / Replaceable Seat option
  • Gear / Pneumatic Rotary Actuator Operated
  • P.T.F.E. (PFA/FEP) Lined Butterfly Valve
  • Flanged End, Butterfly Valve
  • Damper Type Butterfly Valve for High Temperature Air Service
  • Off Set Disc Design Butterfly Valve for high pressure & temperature service

APPLICATION

  • Water Treatment Plant
  • Paper Industry
  • Sugar Industry
  • Breweries
  • Chemical Industry
  • Waste Effluent Treatment Plant
  • Drilling Rigs
  • Gas Plant
  • Cooling Water Circulation
  • Heating & Air Conditioning
  • Pneumatic Conveyors
  • Compressed Air.
  • Fire Exposure.
  • Pharmaceuticals.

DESIGN & TESTING INTERNATIONAL STANDARD

Valve Design : BS 5155 / API 609
Pressure Testing : BS 6755-I / API 598
Face To Face : ANSI B 16.10
Flange Drilling : ANSI B 16.5 / BS 10 Table / DIN / IS 6392
Pressure Rating : PN 10 / PN 16
Size Range : 40NB to 600NB
Operation : Up to 250NB Flow-Control Lever Operated and above Gear

Availability

Availability [Size] : DN40 /40MM / 1 1/2" To DN600 /600MM / 24"


Butterfly Valve - Double Flanged End Type / Wafer - Flangless, Sandwhich Type
Availability [Size] : DN40 /40MM / 1 1/2" To DN600 /600MM / 24"
Body : CI / DI / WCB [CS] / CF8 [SS 304] / CF8M [SS 316] / CF3M [SS 316L] / A 105 / F304 / F316
Disc : SG Iron / DI / WCB [CS] / CF8 [SS 304] / CF8M [SS 316] / CF3 [SS 304L] / CF3M [SS 316L]
Body Seat [Liner] : Nitrle / EPDM / Neoprene / NBR / Silicon / Viton / Hypalon / PTFE
Gland Seal : Nitrle / EPDM / Neoprene / NBR / Silicon / Viton / Hypalon
Stem : AISI 410 /304 / 316 / 304L / 316L
Hand Lever : CS / SS
Fasteners : CS / SS 304 / SS 316
End Connection : Wafer Type, Flangeless, Sandwhich Type
Pressure Rating : ASA 125# / 150# / PN6 / PN10 / PN16
Operation : L.O / G.O / Electrical Actuated / Pneumatic Actuated
Valve Design : BS 5155 / API 609
Pressure Testing : BS 6755 Part I / API 598
Face to Face : ANSI B 16.10
Flange Drilling : ANSI 16.5 / BS 10 Table/ DIN / IS STD.
Special Options : P.T.F.E. [PFA/FEP] Lined Butterfly Valve // Moulded/Replaceable Seat Option //
Gear /Pneumatic Rotary Actuator Operated // Damper type Butterfly Valve for High Temp. Air Service
Note : Butterfly Valve Lever Up To 200 MM & Above Gear Operated