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Our Product Range

Ball Valve

Two Way Ball Valve

Three Way Ball Valve

Four Way Ball Valve

Jacketed Ball Valve

Flush Bottom Ball Valve

Forged Steel Ball Valve

Globe Valve

Gate Valve

Check Valve (NRV)

Swing Type Check Valve

Wafer Type Check Valve

Disc Check Valve

Forged Steel Lift Check Valve

Butterfly Valve

Diaphragm Valve

Strainer

"Y" Type Strainer

Basket Type Strainer

Sight Glass

Tubular Type Sight Glass

Double Window Sight Glass

Forged Steel Valve

Forged Steel Globe Valve

Forged Steel Gate Valve

Forged Steel Lift Check Valve

Forged Steel Ball Valve

 

 

Butterfly Valve

Center Rubber Lined Butterfly Valve 
Replaceable Sleeve Type Butterfly Valve
Concentric, Slim-Seal Design Butterfly Valve
Flangeless, Wafer, Sandwich Type Butterfly Valve
Wafer / Lug / Double Flanged Type Butterfly Valve
Damper Type Butterfly Valve

Dharmi Engineers Wafer Type Butterfly Valve have been developed with extensive application, design and manufacturing expertise. Dharmi Engineers 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. Dharmi Engineers 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. Dharmi Engineers High performance butterfly valves are also available with Full-Lugs type body with raised faces and flanged ends connection on request.

Dharmi Engineers 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.

Dharmi Engineers 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.

Rubber Lined Butterfly Valve
Slim Seal, Center Disc Design, 
Wafer Type, Flangeless,
Manual Flow-Control Lever Operated
Size Range – 40NB to 600NB

Valve Operation :

Dharmi Engineers Butterfly Valves are generally supplied with manual hand lever operation up to 10” and above gear unit operated. Dharmi Engineers also offering Butterfly Valves with either Pneumatic or Electrical actuator operated for automation.

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

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 / JIS Std.

Pressure Rating

:

PN 10 / PN 16

Leakage Class

:

Class VI (Zero Leakage)

Size Range

:

40NB to 600NB

Operation

:

Up to 250NB Flow-Control Lever Operated and above Gear Operated. On special request Gear Operation also available from 80NB size.

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

Tailor Made Valve

Material of Construction :

Disc

Seat (Liner)

Cast Iron to ASTM A 126 Class B
IS 210 GR. FG 200 / 220 / 260

Ductile Iron to ASTM A 536 Grade 65-45-12

Cast Carbon Steel to ASTM A 216 GR. WCB

Stainless Steel to ASTM A 351 GR. CF 8 / 8M / 3 / 3M

Aluminium Bronze ASTM B 148-C95400

Nylon Coating on C.I. / D.I. / WCB / S.S. Disc Material

EPDM / Neoprene / Hypalon ® / Nitrile Rubber / Buna-N

RubberEncapsulated on C.I. / D.I. / WCB / S.S. Disc Material

P.T.F.E. (PFA / FEP) Lined on C.I. / D.I. / WCB / S.S. Disc Material

EPDM

EPDM Food Grade

Buna – N

Black Nitrile

Neoprene

Hypalon ®

Silicon

Viton ®

P.T.F.E.

Body

Stem

Cast Iron to ASTM A 126 Class B
IS 210 GR. FG 200 / 220 / 260

Ductile Iron to ASTM A 536 Grade 65-45-12

Cast Carbon Steel to ASTM A 216 GR. WCB

Stainless Steel to ASTM A 351 GR. CF 8 / 8M / 3 / 3M

AISI 410 (S.S. 410 – 13% Cr. Steel)

AISI 304 (S.S. 304)

AISI 316 (S.S. 316)

AISI 304L (S.S. 304L)

AISI 316L (S.S. 316L)

Carbon Steel to BS 970

Standard Test :

Body Test

1.5 times the working pressure with water. This test is performed after valve assembly and with disc in half position open, it is called as a body hydro test.

Seat Test

1.5 times the working pressure with water.

Function / Operation Test

At the time of final inspection, each valve and its actuator (Flow-Control Lever / Gear / Pneumatic Actuator), under goes a complete operating test (Open/Close). This test carried out without pressure and at ambient temperature. It ensures the correct operation of the valve / actuator assembly with accessories such as solenoid valve, limit switches, air filter regulator etc.

Special Test

On request, any other test can be carried out according to special instruction by client

Applications :

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

Please specify below details at the time of enquiries/orders:

Types of Valve

Pressure Rating Class

Valve Size

Type of End Connection

Material of Construction

Disc Material

Rubber Seat Material

Flow Medium (Service)

Design Pressure

Operating (Working) Pressure

Design Temperature

Operating (Working) Temperature

Type of Operation Manual / Pne. / Ele. Etc.

Wide Range of Industrial Butterfly Valve

Cast Iron Butterfly Valve

Cast Carbon Steel Butterfly Valve

Cast Stainless Steel Butterfly Valve

Slim-Seal Design Butterfly Valve

Rubber lined Butterfly Valve

P.T.F.E. lined Butterfly Valve

Wafer Type Butterfly Valve

Damper type Butterfly Valve

High Performance Butterfly Valve

Center Disc Butterfly Valve

Off-Set Disc Butterfly Valve

Gear operated Butterfly Valve

Pneumatic operated Butterfly Valve

Electrical operated Butterfly Valve

Zero Leakage Butterfly Valve

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