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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


"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



Diaphragm Valve

A Weir Type Diaphragm Valve
Rising Stem, Non-Rising Hand Wheel
Rubber Lined Diaphragm Valve
P.T.F.E. Lined Diaphragm Valve

Dharmi Engineers supplying Diaphragm Valves for different applications such as slurries, Viscous and corrosive substances, suspended solids and other hard to handle medium. Dharmi Diaphragm Valve having rugged design incorporating the best material available is proved by maintenance free operation. Dharmi Diaphragm valve design is very simply construction. The valve assembly has only three major parts such as Body, Bonnet & Diaphragm. In the diaphragm valve, it's also very easy to replace the rubber diaphragm without dismantling body from the line.

Extra heavy duty casting affords high resistance to atmospheric corrosion. Dharmi diaphragm valve reduces diaphragm travel for extended service and fine control.

A Weir Type
Flanged End, Diaphragm Valve

A wide choice is available for body materials, body rubber lining, types of operation and body end connection to satisfy the need of most industrial application. Dharmi Engineers High quality standards are strictly followed, 100% valve being checked for size, design pressure, operation, Material of Construction, final finish etc.

Design & Testing International Standard :

Valve Design


BS 5156

Pressure Testing


BS 6755-I

Flange Drilling


ANSI B 16.5 / BS 10 Table / DIN / IS / JIS Standard

Butt Weld End


ANSI B 16.25

Socket Weld End


ANSI B 16.11

Screwed End


ANSI B 1.20.1(BSP/NPT)

Pressure Rating


PN 10

Size Range


15NB to 200NB



Manual Hand Wheel Operated

Special Options :

Pneumatic Cylinder Actuator Operated

Pneumatic Spring & Diaphragm Actuator Operated

With Position Indicator or Limit Switches

P.T.F.E. (PFA / FEP) Lined Diaphragm Valve

Polypropylene Material Diaphragm Valve

Tri-Clover End Diaphragm Valve

Material of Construction :

Body, Bonnet & Compressor

Body Diaphragm

Body Lining

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

Cast Carbon Steel to ASTM A 216 GR. WCB

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







P.T.F.E. with above all rubber backings







P.T.F.E. (FEP / PFA)

EPDM - Calcium, Magnesium & Silica Free

Rubber Lining Thickness

Body Size (NB) Thickness

Lining Hardness

15 to 65 3.0mm

80 to 100 3.5mm

125 to 150 4.0mm

200mm 5.0mm

Hard Rubber (Ebonite) 950 + 5 Shore A

Soft Rubber 650 + 5 Shore A

Applications :

Fertilizer Plants

Water Treatment Plant

Waste Water Treatment Plant

Rayon Plant

Petrochemical Industries

Food Industries

Pharmaceuticals Industries

Sugar Plants

Chemical Industries

Thermal Power Stations

Other Process Industries

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

Types of Valve

Pressure Rating Class

Valve Size

Type of End Connection

Drilling Standard, If Flanged End

Material of Construction

Diaphragm Material

Lining Material, If lined valves

Flow Medium (Service)

Design Pressure

Operating (Working) Pressure

Design Temperature

Operating (Working) Temperature

Type of Operation Manual / Pne. Etc.


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