Forged Steel Gate Valve

Bolted Bonnet, OS & Y Type, Rising Stem Gate Valve

Pressure Rating: 800# / 1500#

End Connection: Screwed / Socket Weld / Butt Weld End

Operation – Hand Wheel Operated

Dharmi Engineers Forged Steel Gate Valves are Bolted Bonnet, outside screw and yoke type, Rising Spindle construction Body and bonnet made from high quality forgings.

Dharmi Engineers offer Forged Steel Gate Valves in size 1/2” (DN15) to 2” (DN50) to suit various critical, non-critical applications and pressure rating up to 1500 class in Regular (Reduce) bore & Standard (Full bore) design.

Materials Temperature Withstand Capacity as per ANSI B 16.34 Standard

ASTM A 105 from 0o C. to 425o C

ASTM A 182 GR. F22 from 0o C. to 593o C

Design & Testing International Standard:

Valve Design                           : API 602 / BS 5352

Pressure Testing                    : API 598 / BS 5146

Pressure Temp. Rating        : ANSI B 16.34

Face To Face                         : ANSI B 16.10

Butt Weld End                         : ANSI B 16.25

Socket Weld End                    : ANSI B 16.11

Screwed End                          : ANSI B 1.20.1(BSP/NPT)

Salient Features:

• Body & Bonnet made from high quality forging. The Forgings are precision machined for high performance
• Leak Proof Body-Bonnet Joint With Spiral Wound Gasket
• Bi-Directional Shut-Off
• Ground Finish Stem
• Self Aligning Two Piece Gland
• Die moulded Graphite (Grafoil) Packing Rings, controlled clearance between stem, gland and bonnet bushing for guaranteed low emissions and also suitable for higher temperature.
• Deep stuffing box is providing for tightness and maximum long packing life.
• Swinging Eye Bolts facilitate easy access to the stuffing box.
• Back seating feature facilitates repacking of the stuffing box on line with the valve in fully open position.
• Stellited Wedge (Gate), Seat Ring & Back Seat can also be offered on special request.

Material of Construction:

Body & Bonnet

☼ ASTM A 105 (Forged Carbon Steel)

☼ ASTM A 182 F 304 / 304L (Forged Stainless Steel 304 / 304L)

☼ ASTM A 182 F 316 / 316L (Forged Stainless Steel 316 / 316L)

☼ ASTM A 182 F 11 / F 22 (Forged Alloy Steel)

Trims (Internal Working Parts)

☼ 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)

Gasket

☼ S.S. 304 / 316 / 304L / 316L Spiral Wound

     With P.T.F.E. / CAF / Grafoil Filler

Gland Packing

☼ Graphite (Grafoil) Ring

☼ Graphite Asbestos Rope with Inconel Wire

☼ Cut Braided Graphite Ring

☼ Inconel Braided Grafoil with Corrosion Inhibitor

• Flanged End, Flange Welded to Body, Rating 150# / 300# / 600#
• Butt Weld (Welded Neck) / Socket Weld / Screwed (BSP/NPT) Connection
• Special Trims on Request

• Stellited Hard Face Disc & Wedge on request
• Locking Device
• Position Indicator
• Other Material of Construction

Applications:

Power Plants & Process Industries

Fertilizers Plants

Sugar Industries & Distillery Plants

Water, Steam, Gas, Oil & other Non-aggressive media

Other application on request

Wide Range of Industrial Gate Valve

• Cast Iron Gate Valve
• Cast Carbon Steel Gate Valve
• Cast Stainless Steel Gate Valve
• Forged Steel Gate Valve
• Alloy Steel Gate Valve
• Alloy 20 Gate Valve
• High Pressure Gate Valve
• Two Way Gate Valve
• Bi-Directional Gate Valve
• Steam Gate Valve
• Electrical Actuator Operated Gate Valve
• Motorised Gate Valve
• Bolted Bonnet Gate Valve
• Union Bonnet Gate Valve
• Flexible Wedge Gate Valve
• Solid Wedge Gate Valve