Gate Valve

Gate Valve Manufacturer, Alloy 20, Duplex Steel, Hastelloy, API 600, API6D, API 603 Standard Gate Valve Exporter, Supplier, Stockist, Importer. Rising Stem, Bolted Bonnet, Austenitic Stainless Steel Gate Valves, Flanged - Butt Weld End.

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

Cast Heavy Duty Body Construction as per Design Standard API 600 / 603
End Connection - Flanged End, Pressure Rating - 150# / 300# / 600# / PN16 / PN25 / PN 40 / PN64 / PN100
Valve Operation - Hand Wheel / Gear Actuator Operated

Steel Gate Valve API 600 - Model Series: GT15/GT30
Stainless Steel, Corrosion Reistant Gate Valve API 603 - Model Series: GT153/GT303
Forged Steel Gate BS 5352/API 602 Model Series: FGT80

Rising Stem Gate Valve Manufacturing Size Range:  DN25/25mm/One Inch, DN40/40mm/One and Half Inch, DN50/50mm/2”/Two Inch, DN65/65mm/2-1/2”/Two and Half Inch, DN80/80mm/3”/Three Inch, DN100/100mm/4”/Four Inch, DN125/125mm/5”/Five Inch, DN150/150mm/6”/Six Inch, DN200/200mm/8”/Eight Inch, DN250/250mm/10”/Ten Inch, DN300/300mm/12”/Twelve Inch, DN350/350mm/14”/Fourteen Inch, DN400/400mm/16”/Sixteen Inch, DN 450/450mm18”/Eighteen Inch, DN500/500mm/20”/Twenty Inch, DN550/550mm/22”/Twenty Two Inch, DN600/600mm/24”/Twenty Four Inch size.

API 600/602/603/API6D Standard, Bolted Bonnet, Rising Stem, Gate Valve Hand Wheel Operated       Gate Valve Manufacturer, Alloy 20, Duplex Steel, Hastelloy, API 600, API6D, API 603 Standard Gate Valve Exporter, Supplier, Stockist, Importer. Rising Stem, Bolted Bonnet, Austenitic Stainless Steel Gate Valves, Flanged - Butt Weld End.

About 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.

Mostly API 600/603 standard Gate valve contructions are bolted bonnet with rising spindle Pressure seal design bonnet design used for high pressure application from class 900 pressure rating.

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.

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.

Integral Seat
These types’ seats are integral with body casting. Machined into the body casting.

Renewable Seat
Separate Seat Rings that screw into the valve body, which is called as Renewable Seats.

Nivz Gate Valves are Outside Screw, Rising Spindle, Bolted Bonnet design, threads are away from the line fluid and easy to lubricate.

Gate Valve body ports are streamlined, permitting unobstructed flow, reduces turbulence, results in lower pressure drop and lower erosion. Nivz Gate Valves bonnet castings are of one – piece construction, where the yoke is integral with bonnet up to 6” Size.

Our manufacturing range also cover Half and Full Jacket Thermic Fluid Hot Oil Jacketed Gate Valve & Steam Jacketed Valve for sticky, viscous, molten sulphur, bitumen, asphalt application. In full jacketed gate valve flange size will be higher then valve bore size. As like in 3" (DN80) gate valve flange dimensions as per 4" (DN100), face to face distance as per ANSI B 16.10 Standard, valve size 3" (DN80).

Nivz An ISO 9001, ISO 14001 & OHSAS 18001 certified company Gate Valve Manufacturer, Alloy 20, Duplex Steel, Hastelloy, API 600, API6D, API 603 Standard Gate Valve Exporter, Supplier, Stockist, Importer. Rising Stem, Bolted Bonnet, Austenitic Stainless Steel Gate Valves, Flanged - Butt Weld End.

Gate Valve Bonnet Assembly and Gate Details

Gate Valve bonnet assembly drawing dimension features inside details of functioning           Flexible Wedge Gate Valve Manufactuer           Solid Wedge Gate Valve Manufactuer

Jacketed Gate Valve
    Special Option for Gate Valve  

Half Jacketed Gate Valve Flanged End Hand Wheel Operated for Coaltar Asphalt Bitumen Paint Chocolate application



  • Extended Bonnet design for low temperature and cryogenic services.
  • Gland Seal Design (Water Seal) With Lantern Ring for Vacuum Application
  • Non-Rising Hand Wheel on special request
  • Bolted Bonnet / Pressure Seal Bonnet
  • Flexible / Solid Wedge / Double Disc Type
  • Gear / Pneumatic Cylinder / Electrical Actuator Operated
  • Locking Arrangement
  • By Pass Execution
  • With NACE MR 0175
  • Duplex Steel (D2205)/Alloy 20/Hast Alloy/Inconel Material Gate Valves
  • Valve Position Indicator, Limit Switch
  • Stem Protection
  • Tailor Made Valve




Salient Features of Gate Valve

  • Body & Bonnet made from high quality casting with liberal sections. The castings are precision machined for high performance
  • Body Guided Wedge ensures positive seating and eliminates side thrust.
  • Streamline flow path hence no pressure drop
  • Leak Tightness at High & Low differential pressure
  • 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.
  • Seat Ring Screwed in to the body are replaceable type. Seal welded type Seat Ring & Integral Seat cab also be offered on special request.
  • Stellited Wedge (Gate), Seat Ring & Back Seat can also be offered on special request.
  • Higher Pressure & Higher Size Valves are provided with Thrust Bearings and also with Gear drive arrangements.
  • In built wear life for long duration of service.


Design & Testing International Standard of Gate Valve

Design Standard : API 600 / 603 / API 6D / ISO 10434 / ISO 14313 / BS 1414
Inspection & Testing Standard : BS EN ISO 12266 - I (BS 6755 - I) / API 598 / ISO 5208
Flange To Flange Distance : As Per ANSI B 16.10
End Connection : Flanged End to ANSI B 16.5, Class 150 / 300 / 600
  : BS 10 Table D / E / F / H
  : PN 6 / PN 10 / PN 16 / PN 25 / PN 40 / PN 64
  : DIN Standard / JIS Standard / IS Standard
  : Screwed - Threaded End to ANSI B 1.20.1
  : Socket Weld End to ANSI B 16.11
  : Butt Weld End to ANSI B 16.25
Manufacuring Size Range : 1/2" (DN15) to 12"(DN 300)
Pressure Rating of Valve : 150# / 300# / 600# / 800#
  : PN 10 / PN 16 / PN 25 / PN 40 / PN 64
Valve Operation : Manual Hand Wheel / Worm-Gear Actuator Operated
Valve Seat Leakge : Leakage Class IV (For metal to metal seated valves)

MOC (Bill of Material - BOM) for Bolted Bonnet Gate Valve

Body / Bonnet / Wedge (Gate) : ASTM A 126 GR. B / IS 210 GR. FG 200/220/260 (Cast Iron) / Ductile Iron / Nodular C.I.
  : ASTM A 216 GR. WCB (Cast Carbon Steel)
  : ASTM A 351 GR. CF 8 / CF 8M (SS 304 / SS 316)
  : ASTM A 351 GR. CF 3 / CF 3M (SS 304L / SS 316L)
  : ASTM A 351 GR. CN7M / ASTM A351 Gr. CF8C
  : ASTM A351 Gr. CD4Mcu / ASTM A351 Gr. CK3MCuN
  : ASTM A352 Gr. LCA / LCB / LCC
  : ASTM A217 Gr. WC1 / WC6 / WC9 / C5 / C12
  : ASTM A494 Gr. CW6MC / CW2M / CY40 / CU5MCuC
  : NACE MR0175 / NACE MR
Trims (Working Parts) : ASTM A 276 T - 304 / 316 (SS 304 / SS 316)
  : ASTM A 276 T - 304L / 316L (SS 304L / SS 316L)
  : ASTM A 276 T - 410 (S.S. 410 - 13% Cr. Steel)
  : ASTM A 182 GR F6A / Half - Full Stellited
  : Alloy 20 / Hast Alloy
  : Duplex Steel / Super Duplex Steel
Gland Packing : Grafoil Ring / Pure Black Carbon Graphite Ring
  : Inconel Wire based Graphite Asbestos cur braided ring
  : PTFE Impregnated Asbestos Gland Rope
  : PTFE Virgin / 25% Glass Filled Teflon / Carbon Filled Teflon - "V" Ring Set
Gasket : SS 304/316 Spiral Wound with CAF/Graphite Filled
  : Graphited Asbestos wire based
  : CAF - Compressed Asbestos Fibre
  : Graphite Tensed Gasket
Bolts / Stud & Nuts : ASTM A 193 GR. B7 / A 194 GR. 2H
  : S.S. 304/316/304L/316L
Hand Wheel : Ductile Iron / S.G. Iron / Carbon Steel

Dimensions of Bolted Bonnet, Rising Stem Gate Valve

rising stem gate valve drawing dimensions catalogue download

download gate valve drawing cataloue