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Gate
Valve |
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OS & Y Type, Rising Stem, Bolted Bonnet
Gate Valve Manufacturers
Flexible Wedge / Solid Wedge Gate Valve Exporter
Renewable Seat / Welded Seat Design Gate Valve Manufacturers
Flanged End/Screwed/Butt Weld/Socket Weld/Ring Joint End Gate Valve
India
Manual Hand Wheel / Gear / Chain Wheel Operated Gate Valve Suppliers
Gate Valve Manufacturers Size Range: From ½ to 12
Gate Valve Pressure Rating: 125# / 150# / 300# / 600# / 800#
What is Gate Valve?
This
valve has inside a gate that moves up-down perpendicular to
the flow of the service. In the up position it will open and
vise versa in the down position it will be closed. The flow is
straight through, and does not lend itself for use as a
metering valve. The Gate valve is also available different
types of Disc-Gate such as Double Disc Gate, Solid Gate,
Flexible Gate, Parallel Slide Gate, Conduit Gate etc. to suit
industrial various applications. The gate valve is used mainly
as an on /off valve. This Gate Valve is also called as a Bi
Directional Gate Valve. Gate Valves are also widely used in
High Pressure & Temperature application. Mostly Gate valve
contructions are bolted bonnet with rising stem. Pressure seal
design bonnet design used for High Pressure application.
What is Rising Stem?
Outside
Screw & Yoke (OS & Y) design keeps the stem threads
outside the valve and is recommended where high temperatures,
corrosives, and solids in the line might damage the stem
threads inside the valve. When Gate Valve will open, the stem
extends above the hand wheel indicates the position of the
gate.
What is Valve Trim?
A
trim means internal working parts of valves. In Gate Valves the
Stem (Spindle), Seat Ring, Back Seat Bush, Gland Bush is trim.
What is Integral Seat?
These
types seats are integral with body casting. Machined into the
body casting.
What is Renewable Seat?
Separate
Seat Rings that screw into the valve body, which is called as
Renewable Seats.
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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.
Our manufactuing range also covers Fire Fighting Line Cast Iron
& Carbon Steel Rising Stem Gate Valve. |
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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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Various Wedge (Gate) Design |
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Valve Dimensions: Manufacturing Standard API 600/API 603 |
Gate
Valve Dimensions - Bolted Bonnet, OS and Y Type, Rising
Stem, Non Rising Rising Hand Wheel, Flanged End
Flange
Drilling & Dimensions - As Per ANSI B 16.5, Class 150
(Other Standrad Drilling Available on Request) |
| Size
(INCH) |
1" |
1-1/2" |
2" |
2-1/2" |
3" |
4" |
5" |
6" |
8" |
10" |
12" |
| Size
(DN) |
25 |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
250 |
300 |
| F
to F |
127 |
165 |
177.8 |
191 |
203 |
228.6 |
254 |
266.7 |
292.1 |
330.2 |
335.6 |
| Flange
O.D. |
108 |
127 |
152.4 |
177.8 |
190.5 |
228.6 |
254 |
279 |
343 |
406 |
483 |
| Flange
PCD |
79.3 |
98.4 |
120.6 |
139.7 |
152.4 |
190.5 |
215.9 |
241.3 |
298.4 |
362 |
431.8 |
| R.F.
Dia. |
50.8 |
73 |
92.1 |
104.7 |
127 |
157.2 |
185.6 |
215.9 |
269.9 |
323.8 |
381 |
| No.
of Hole |
04 |
04 |
04 |
04 |
04 |
08 |
08 |
08 |
08 |
12 |
12 |
| Hole
Dia. |
15.8 |
15.8 |
15.8 |
19 |
19 |
19 |
19 |
22.2 |
22.2 |
25.4 |
25.4 |
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Gate
Valve Dimensions - Bolted Bonnet, OS and Y Type, Rising
Stem, Non Rising Rising Hand Wheel, Flanged End
Flange
Drilling & Dimensions - As Per ANSI B 16.5, Class 300
(Other Standrad Drilling Available on Request) |
| Size
(INCH) |
1" |
1-1/2" |
2" |
2-1/2" |
3" |
4" |
5" |
6" |
8" |
10" |
12" |
| Size
(DN) |
25 |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
250 |
300 |
| F
to F |
165 |
191 |
216 |
241 |
282 |
305 |
381 |
403 |
419 |
457 |
502 |
| Flange
O.D. |
124 |
155.4 |
165.1 |
190.5 |
209.5 |
254 |
279.4 |
317.5 |
381 |
444.5 |
520.4 |
| Flange
PCD |
88.9 |
114.3 |
127 |
149.3 |
168.1 |
200.1 |
234.9 |
269.7 |
330.2 |
387.3 |
450.8 |
| R.F.
Dia. |
50.8 |
73 |
92.1 |
104.7 |
127 |
157.2 |
185.7 |
215.9 |
269.9 |
323.8 |
381.0 |
| No.
of Hole |
04 |
04 |
08 |
08 |
08 |
08 |
08 |
12 |
12 |
16 |
16 |
| Hole
Dia. |
19 |
22.2 |
19 |
22.2 |
22.2 |
22.2 |
22.2 |
22.2 |
25.4 |
28.6 |
31.8 |
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Contact Factory Fore More Size, More Rating, Other
Standard Gate Valve Dimensions |
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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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Gate
Valve Salient
Features : |
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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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Gate
Valve 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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Gate
Valve Special
Options : |
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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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Gate
Valve 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
Manufacturer & Exporter |
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Cast Iron
Fire Fighting Gate Valve
Manufacturer
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Cast Carbon Steel
Steam Gate Valve
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Cast Stainless Steel Gate Valve
Exporter
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Forged Steel Gate Valve
Supplier
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Alloy Steel Gate Valve
Stockiet
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Alloy 20 Gate Valve
Manufacturer
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High Pressure Gate Valve
Manufacturers
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Two Way Gate Valve
Exporter
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Bi-Directional Gate Valve
Manufacturer
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Rising
Stem Gate Valve
Manufacturers
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Electrical Actuator Operated Gate Valve
Exporter
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Motorised Gate Valve
Supplier
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Bolted Bonnet Gate Valve
Stockiet
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Union Bonnet Gate Valve
Manufacturer
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Flexible Wedge Gate Valve
Manufacturers
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Solid Wedge Gate Valve
Exporter
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