x
d v a l v e
Products

BUTTERFLY VALVES

D Valve engineers are engaged in design and manufacturing Butterfly valves in pipeline flow control. We developed wafer, lugged and Double Flanged Butterfly valves with extensive application, design and manufacturing expertise. These products are produced by employing modern manufacturing practices under a robust quality assurance system. These practices ensure consistent product quality and dependable performance. Our Butterfly valves can be operated manually, pneumatically or electronically.


Rubber lined butterfly valve is a kind of valve with thick polymer lining on the body and disc. The lining makes the body completely isolate from medium and provides excellent anti-corrosive performance. It is designed as a device to shut-off or regulate the working medium flow and installed in pipelines or vessels with medium of acid, salt and oxidant, reducing agent Or solvent in chemical, petroleum, pharmacy, food, iron and steel smelting, paper and Pulp, water power plant etc. it can be served, globe valves as well as other shutting off or regulating valves.

GENERAL SPECIFICATIONS
Model DV-CBV1, DV-CBV2
Sizes NPS 2” (DN 50) – NPS 16” (DN 400)
Type Wafer, LUG
Seat NBR, EPDM, Viton, Hypalon, Silicon, PTFE
Pressure Class PN10 / PN16
End Connection Wafer AND LUG
Valve Design Standard BS 5155 / API 609 / EN 593 / lS 13095
Flange Conformity ANSI150 / ANSI 125 /BS l0 TAB D & E
Face to Face BS 5155 / ISO 5752 / API 609
Pressure Testing Standard BS 8755 Part - I /API -598 / BS EN 12266-1
Material of Construction Wide range and most suitable material selection available for any kind of application. Refer to
Fig.-3G for identifying components and materials.
Valve operation All our Butter fly valves on above ranges are manual operated with MS, SG , SS Handle/ Pneumatic Actuated, Electrically Actuated (Motorised)/ Limit and Tamper Switch Fitted
Application Water works, Public facilities, Building Industry, Petroleum, Chemical, Steel, Metallurgy, Paper Making Industry, Food and Beverages
MATERIALS OF CONSTRUCTION
Sr. No.  DESCRIPTION  MATERIAL
1 Body Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel
2 Seat NBR, EPDM, Viton, Hypalon, Silicon, PTFE
3 Shaft Stainless Steel 410, 316, 304
4 Disc Ductile Iron+ Ni, CF8, CF8M, Bronze
5 Pin Stainless Steel
6 O-Ring NBR, EPDM
7 Bushing PTFE, Bronze
8 Operation MS, SG , SS Handle/ Pneumatic Actuated, Electrically Actuated (Motorised)/ Limit and Tamper Switch Fitted


Salient Features:

  • Compact construction results in low weight, less space in storage and installation.
  • No cavities in the flow passage, easy to clean and disinfect for potable water system etc.
  • Top plate double drilled to fit ISO 5211 dimensions and standard secondary bolt circle dimensions.
  • Replaceable Rubber Seat and Moulding Rubber Seat.
  • Low operating torques results in easy operation and economical actuator sizing.
  • Unique stem retention system to provide blow-out proof stem and easy assembly and disassembly of valve
  • Heavy duty one piece wafer and lugged wafer body designed to withstand specified pressures
  • Heavy duty square grooved seat design with moulded O-ring seals to serve as flange gasket
  • One piece stem with close tolerances double D drive eliminates the need for disc screws or taper pins
  • Heavy duty bearing absorbs the forces acting on the stem/disc assembly due to line pressure


FLANGED BUTTERFLY VALVE


GENERAL SPECIFICATIONS
Model DV-CBV3
Sizes NPS 2” (DN 50) – NPS 24” (DN 600)
Type Double Flange
Seat NBR, EPDM, Viton, Hypalon, Silicon, PTFE
Pressure Class PN10 / PN16
End Connection Flanged to suite ANSI Class 150#, BS Table D & E | DIN PN 10 & 16
Valve Design Standard BS 5155 / API 609 / lS 13095
Flange Conformity ANSI150 / ANSI 125 /BS l0 TAB D & E
Face to Face IS/ISO 13095 | API609 | BS5155
Pressure Testing Standard ISO 13095 / API -598
Material of Construction Wide range and most suitable material selection available for any kind of application.
Valve operation All our Butter fly valves on above ranges are manual operated with MS, SG , SS Handle/ Pneumatic Actuated, Electrically Actuated (Motorised)/ Limit and Tamper Switch Fitted
Application Water works, Public facilities, Building Industry, Petroleum, Chemical, Steel, Metallurgy, Paper Making Industry, Food and Beverages


Salient Features:

  • 01 – Single piece casted body
  • 02 – Top flange as per ISO 5211 for easy actuation
  • 03 – Full Bore gives high CV
  • 04 – Low torque resulting in low wear & long life