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Gate
Valve |
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OS & Y Type, Rising Stem, Bolted Bonnet
Flexible Wedge / Solid Wedge
Renewable Seat / Welded Seat Design
Flanged End/Screwed/Butt Weld/Socket Weld/Ring Joint End
Manual Hand Wheel / Gear / Chain Wheel Operated
Size Range: From ½” to 12”
Pressure Rating: 125# / 150# / 300# / 600# / 800# |
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Dharmi Engineers Gate Valves are Outside Screw, Rising Stem, Bolted Bonnet Construction, threads are away from the line fluid and easy to lubricate.
Dharmi Gate Valve body ports are streamlined, permitting unobstructed flow, reduces turbulence, results in lower pressure drop and lower erosion. Dharmi Gate Valves bonnet castings are of one – piece construction, where the yoke is integral with bonnet up to 6” Size. The body bonnet joint for all class of Gate Valve is in Circular Round Shape. In Gate Valve from 150# Rating body & bonnet joint have male-female type joint with a gasket. |
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Motorised Electrical Actuator Operated
Butt Weld End Gate Valve |
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Cast Carbon Steel Gate Valve
OS & Y Type, Rising Stem, Bolted Bonnet
Design Standard: API 600
Size Range - 1” to 12”
Pressure Rating - 125# / 150# / 300#
End Connection – Flanged End |
Forged Carbon Steel Gate Valve
OS & Y Type, Rising Stem, Bolted Bonnet
Design Standard: API 602
Size Range: ½” to 2” // ½” to 1½”
Pressure Rating: 800# // 1500#
End Connection – Screwed / Socket Weld End |
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Materials
Temperature Withstand Capacity as per ANSI B 16.34 Standard |
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Rating
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150# / 300# / 600#
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ASTM A 216 GR. WCB from 0° C. to
425° C
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Rating
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600#
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ASTM A 217 GR. WC6 from 0° C. to
593° C
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Rating
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150#
/ 300#
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ASTM
A 351 GR. CF 8 from 0° C. to 537° C
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Various Wedge (Gate) Design |
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Body & Bonnet made from high quality casting with liberal sections. The castings are precision machined for high performance
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Body Guided Wedge ensures positive seating and eliminates side thrust.
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Streamline flow path hence no pressure drop
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Leak Tightness at High & Low differential pressure.
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Die moulded Graphite (Grafoil) Packing Rings, controlled clearance between stem, gland and bonnet bushing for guaranteed low emissions and also suitable for higher temperature.
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Deep stuffing box is providing for tightness and maximum long packing life.
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Swinging Eye Bolts facilitate easy access to the stuffing box.
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Back seating feature facilitates repacking of the stuffing box on line with the valve in fully open position.
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Seat Ring Screwed in to the body are replaceable type. Seal welded type Seat Ring & Integral Seat cab also be offered on special request.
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Stellited Wedge (Gate), Seat Ring & Back Seat can also be offered on special request.
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Higher Pressure & Higher Size Valves are provided with Thrust Bearings and also with Gear drive arrangements.
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In built wear life for long duration of service.
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Design
& Testing International Standard : |
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Valve Design
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API 600 / API 602 / API 603 /
IS 780 / BS 1414 / BS 14846 |
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Pressure
Testing
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API 598 |
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Pressure Temp. Rating
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ANSI B 16.34 |
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Face To Face
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ANSI B 16.10 |
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Flange Drilling
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ANSI B 16.5 / BS 10 Table /
DIN / IS / JIS Standard. |
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Socket Weld
End
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ANSI B 16.25 |
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Socket Weld
End
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ANSI B 16.11 |
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Screwed End
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ANSI B 1.20.1(BSP/NPT) |
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Extended Bonnet design for low temperature and cryogenic services.
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Gland Seal Design (Water Seal) With Lantern Ring for Vacuum Application
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Non-Rising Hand Wheel on special request
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Bolted Bonnet / Pressure Seal Bonnet F
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Flexible / Solid Wedge / Double Disc Type
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Gear / Pneumatic Cylinder / Electrical Actuator Operated |
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Locking Arrangement |
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By Pass Execution |
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With NACE MR 0175 |
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Other Material of Construction on Request |
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Position Indicator |
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Tailor Made Valve |
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Material
of Construction : |
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Body, Bonnet & Wedge |
Trims / Internal Working Parts |
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Cast Iron to ASTM A 126 Class B
IS 210 GR. FG 200 / 220 / 260
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Cast Carbon Steel to ASTM A 216 GR. WCB
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Stainless Steel to ASTM A 351 GR. CF 8 / 8M / 3 / 3M
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Hast Alloy B / C
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ASTM A 351 GR. CN 7M (Alloy 20)
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AISI
410 (S.S. 410 – 13% Cr. Steel)
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AISI
304 (S.S. 304)
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AISI
316 (S.S. 316)
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AISI
304L (S.S. 304L)
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AISI
316L (S.S. 316L)
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Hast
Alloy B / C
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ASTM A 351 GR. CN 7M (Alloy 20)
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With Stellited Hard Face Seat & Wedge Face
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Gasket |
Gland Packing
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Compressed Asbestos Fiber Flat Ring
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Graphite Asbestos Flat Ring
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S.S. 304 / 316 / 304L / 316L Spiral Wound
With P.T.F.E. / CAF / Grafoil Filler
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Graphite (Grafoil) Moulded Ring
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Graphite Asbestos Rope
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Inconel
Braided Grafoil with Corrosion Inhibitor
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Power Plants & Process Industries
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Petrochemical Plants & Refineries
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Fertilizers Plants
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Process & General Industries
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Sugar Industries & Distillery Plants
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Water, Steam, Gas, Oil & other Non-aggressive media
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Other
application on request
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Please specify below details at the time of enquiries/orders: |
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Types of Valve
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Pressure
Rating Class
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Valve
Size
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Type of
End Connection
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Drilling
Standard, If Flanged End
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Material
of Construction
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Trims
(Internal) Parts Material
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Flow
Medium (Service)
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Design
Pressure
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Operating
(Working) Pressure
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Design
Temperature
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Operating
(Working) Temperature
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Type of
Operation Manual / Pne. / Ele. Etc.
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Wide Range of Industrial Gate Valve |
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Cast Iron Gate Valve
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Cast Carbon Steel Gate Valve
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Cast Stainless Steel Gate Valve
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Forged Steel Gate Valve
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Alloy Steel Gate Valve
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Alloy 20 Gate Valve
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High Pressure Gate Valve
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Two Way Gate Valve
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Bi-Directional Gate Valve
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Steam Gate Valve
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Electrical Actuator Operated Gate Valve
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Motorised Gate Valve
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Bolted Bonnet Gate Valve
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Union Bonnet Gate Valve
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Flexible Wedge Gate Valve
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Solid Wedge Gate Valve
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