J G Valves & Fittings ( I ) Private Limited

🏭 Product/Service Description – Hammer Blind Gate Valves

Hammer Blind Gate Valves (also called Swing Blind Valves or Line Blind Valves) are specialized isolation devices designed to provide positive, zero-leakage shut-off in pipelines. Unlike conventional gate or globe valves, a hammer blind valve uses a swinging spectacle blind (paddle plate) that can be rotated between open (spacer) and closed (blind) positions.

The sealing is achieved with a metal-to-metal contact, tightened securely by a hammer-blow mechanism, eliminating the need for gaskets. This ensures fast, reliable, and safe operation, particularly in critical industries where absolute isolation is required.

🔹 Key Features

• Quick and simple operation with hammer lug tightening

• Positive isolation with zero leakage

• No gaskets required – low maintenance

• Available in sizes from 2” to 48” (custom up to 60”)

• Pressure ratings from ASME Class 150 to 900 (higher on request)

• Constructed in Carbon Steel, Stainless Steel, Alloy Steel, and Special Alloys

• Complies with ASME B16.34 / API standards

🔹 Applications

Hammer Blind Gate Valves are widely used in industries where safe shutdowns and absolute isolation are essential:

• Oil & Gas Refineries – isolation during turnaround and maintenance

• Petrochemical & Chemical Plants – hydrocarbon and chemical processing lines

• Power Plants – steam and condensate systems

• Marine & Offshore Platforms – critical safety applications

• Pipeline Operations – ensuring safe maintenance and line flushing

 

✅ Summary:
Hammer Blind Gate Valves offer a rugged, reliable, and maintenance-free isolation solution for large-bore pipelines in demanding industries. With their positive sealing design and quick hammer-blow operation, they provide unmatched safety and efficiency during plant shutdowns and maintenance operations.

The Conduit Gate Valve is a full-bore valve designed for smooth, unobstructed flow in pipelines. Featuring a slab or expanding gate mechanism, it provides tight sealing and minimal pressure drop, making it highly reliable for demanding industrial applications. Its conduit-style passage ensures efficient flow of liquids, gases, and slurries without clogging.

Key Features:

• Full Bore Design: Ensures minimal flow resistance and pressure loss.

• Robust Construction: Manufactured from carbon steel, stainless steel, or alloy steel for durability.

• Tight Sealing: Metal-to-metal or soft seal options for bubble-tight shut-off.

• Easy Operation: Suitable for manual, pneumatic, or electric actuators.

• Low Maintenance: Designed for long service life with reduced wear and tear.

The Bellow Seal Gate Valve is designed for zero-leakage performance in critical industrial applications. It features a welded metallic bellow that provides a hermetic seal around the valve stem, preventing fluid leakage and ensuring safe, reliable operation even in hazardous environments. Its gate-type construction offers full-bore flow with minimal pressure drop.

Key Features:

• Bellow Seal Design: Ensures zero stem leakage and maximum safety.

• Full Bore Flow: Provides unobstructed passage with minimal pressure loss.

• Durable Construction: Available in stainless steel, carbon steel, and special alloys for harsh conditions.

• Low Maintenance: Long service life without frequent packing adjustments.

• Safe Operation: Ideal for handling toxic, flammable, or corrosive fluids.

Parallel Slide Gate Valve (PSGV)

The Parallel Slide Gate Valve is designed for positive shut-off and long service life in high-pressure and high-temperature applications. Unlike wedge gate valves, the parallel slide design uses two parallel discs with a spring or spreading mechanism that ensures tight sealing without wedging stress. This reduces wear and provides reliable operation under severe conditions.

Key Features:

• 🔹 Design: Two parallel discs with spring/lever mechanism for tight sealing

• 🔹 Size Range: 2” to 36” (DN 50 – DN 900)

• 🔹 Pressure Ratings: ANSI Class 150 to 2500

• 🔹 Temperature Range: –29°C to 600°C (depending on materials)

• 🔹 End Connections: Flanged (ASME B16.5/B16.47), Butt Weld (ASME B16.25)

• 🔹 Standards: API 600 / 602 / BS 1414 / ASME B16.34

• 🔹 Leak Tightness: Bi-directional sealing with minimal seat wear

• 🔹 Operation: Handwheel, Gearbox, Electric, or Pneumatic Actuation

Applications:
✔️ Power Plants – superheated steam, feedwater lines
✔️ Refineries & Petrochemicals – hydrocarbon service
✔️ Oil & Gas – high-pressure pipelines and station valves
✔️ Chemical & Fertilizer Plants – aggressive process media
✔️ Industries requiring high-temperature, high-pressure shut-off

 

✅ Advantage: The Parallel Slide Gate Valve eliminates the problem of “thermal binding” seen in wedge gate valves, making it highly suitable for frequent operation in critical services.

🏭 Product/Service Description – Forged Steel Gate Valve

Forged Steel Gate Valves are compact, high-strength isolation valves designed for on/off service in pipelines carrying steam, oil, gas, and other fluids under high pressure and high temperature. Manufactured from high-quality forged steel, these valves offer excellent durability, tight shut-off, and long service life even in the most demanding conditions.

They are available in a range of pressure classes (Class 800 / 1500 / 2500) and sizes (½” to 2”), with end connections such as Socket Weld (SW), Screwed (NPT/BSP), Butt Weld (BW), and Flanged Ends.

With bonnet options including Bolted, Welded, and Pressure Seal, Forged Steel Gate Valves are suitable for critical applications in oil & gas, power generation, petrochemical, marine, and industrial sectors.

🔹 Key Benefits

• Compact and robust forged body for superior strength

• Reliable tight shut-off for leak-free performance

• Rising stem for easy operation and visual position indication

• Renewable or integral seats for extended service life

• Multiple bonnet and end connection options

• Compliance with API 602, ASME B16.34, and API 598

The Screwed Bonnet Valve is a compact and durable valve designed for low to medium pressure applications. Featuring a threaded (screwed) bonnet connection, it provides a secure body-to-bonnet joint while allowing easy disassembly for inspection and maintenance. Its simple yet robust design ensures reliable performance in a wide range of industrial and commercial uses.

Key Features:

• Secure Bonnet Connection: Screwed bonnet ensures tight sealing and leak-free operation.

• Durable Construction: Available in brass, bronze, stainless steel, or cast steel for different service conditions.

• Compact Design: Space-saving structure ideal for smaller pipelines.

• Easy Maintenance: Simple assembly allows convenient servicing and part replacement.

• Versatile Use: Suitable for handling steam, water, oil, and non-corrosive fluids.

🏭 Product/Service Description – Knife Gate Valve

Knife Gate Valves are specially designed for handling thick fluids, slurries, viscous media, powders, and bulk solids. They feature a sharp-edged gate (blade) that can cut through fibrous or abrasive media, providing reliable shut-off in challenging applications where conventional gate valves may fail.

These valves are typically used in low-pressure, full open/close applications and are not recommended for throttling. Knife gate valves are available in various designs such as unidirectional or bidirectional, rising or non-rising stem, manual, pneumatic, or electric actuated operation.

🔹 Key Benefits

• Sharp-edged blade cuts through slurry, pulp, powders, and viscous fluids

• Full bore opening minimizes pressure drop and allows easy flow of solids

• Compact, lightweight design compared to conventional gate valves

• Available in wafer, lugged, and flanged end connections

• Can be customized with actuators (pneumatic, electric, hydraulic) for automated operation

• Materials: Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel with various seat options (Metal, EPDM, PTFE, Nitrile)

🔹 Applications

• Pulp & Paper Industry – pulp stock handling

• Mining & Mineral Processing – slurries, tailings

• Wastewater Treatment – sludge and thick fluids

• Cement & Bulk Handling – powders and dry bulk materials

• Chemical & Food Processing – viscous or fibrous fluids

✅ Summary for Customers:
A reliable shut-off solution for slurry, pulp, wastewater, and bulk material handling, the Knife Gate Valve offers smooth flow, low pressure drop, and excellent performance in tough industrial applications

Extended Bonnet Gate Valve

The Extended Bonnet Gate Valve is specially designed for reliable shut-off in cryogenic and high-temperature applications. Its extended bonnet ensures that the stem packing is isolated from extreme process conditions, providing leak-tight performance, durability, and safety.

Key Features:

• 🔹 Design: Rising stem, bolted bonnet, outside screw & yoke (OS&Y) construction

• 🔹 Sizes: 2” to 24” (larger sizes available on request)

• 🔹 Pressure Ratings: ANSI Class 150 to 1500

• 🔹 Bonnet Extension: Maintains stem packing at ambient temperature for cryogenic service

• 🔹 Sealing: Renewable, resilient or metal seated options

• 🔹 Standards: API 600 / 602 / BS 1414, ASME B16.34

• 🔹 End Connections: Flanged, Butt Weld, or Socket Weld

• 🔹 Testing: 100% hydrostatic and seat leakage tested

Applications:
✔️ LNG, Liquid Oxygen (LOX), Liquid Nitrogen (LIN), Hydrogen Service
✔️ Refineries & Petrochemical Plants
✔️ Power Generation & Chemical Processing
✔️ Any service requiring safe isolation under extreme temperatures

Features:
Design STD.: MSS-SP-81, Testing STD.: MSS-SP-81/BS EN 12266-1 (BS-6755-PART-1), Face to Face: As Per ASME B16.10, Hand Wheel Operated/Gear Operated / Pneumatic Operated, Electrical Operated.
On Request:
Uni-Directiona/Bi-Directional, Soft Seated / Metal to Metal Seated.
Pressure Rating/Class: PN10, PN16, 150#, 300#
End Connection: Wafer Type, Full Lugged Type, Flanged
Size: 50MM to 400MM
Material of Constructions (MOC): WCB, CF8, CF8M
Trim: SS410, SS304, SS316, SS304L, SS316L, Monel.
Other Grades on Request:
CF3, CF3M, CN7M, CF8C, Duplex- Gr. 4A, Super Duplex- Gr. 5A, Super Duplex- Gr. 6A, Nickel Alloy, Monel, Hastelloy, Inconel, SS904L etc.

🏭 Product/Service Description – Bolted Bonnet Gate Valves

Bolted Bonnet Gate Valves are robust isolation valves designed for on/off service in pipelines handling water, steam, oil, gas, and various process fluids. They are built with a bolted bonnet construction, which ensures reliable sealing, easy maintenance, and suitability for a wide range of pressure and temperature conditions.

These valves are available in sizes from ½” to 48” with pressure ratings up to Class 2500, and are manufactured in materials such as Carbon Steel, Alloy Steel, Stainless Steel, and Duplex/Special Alloys. Depending on service requirements, trims can be supplied in 13Cr, SS304, SS316, Stellite, Monel, or Inconel for enhanced corrosion and wear resistance.

The design includes rising stem with OS&Y (Outside Screw & Yoke) for positive shut-off and clear visual position indication, as well as flexible or solid wedge options to maintain tight sealing under thermal and pressure variations. End connections include Flanged, Butt Weld, Socket Weld, and Threaded Ends, making them adaptable across multiple industries.

🔹 Key Benefits

• Strong and durable bolted bonnet design for high reliability

• Wide range of sizes, materials, and trims to suit diverse applications

• Rising stem OS&Y for safe operation and easy identification of valve position

• Renewable or hard-faced seats for long service life

• Designed and tested to API 600 / API 602 / ASME B16.34 / API 598

🔹 Applications

• Oil & Gas pipelines and refineries

• Power plants (steam, feedwater, cooling water)

• Chemical & petrochemical plants

• Water supply and wastewater treatment

• Marine and general industrial utilities

✅ Summary for Customers:
A durable, high-performance gate valve designed for reliable isolation in demanding industrial services, with easy maintenance, multiple material options, and full compliance with international standards.

The Union Mounted Gate Valve is a compact and service-friendly valve designed for reliable shut-off in low to medium pressure applications. Featuring a union bonnet connection, it allows easy removal of the bonnet for inspection, cleaning, or replacement of internal parts without disturbing the pipeline. Its gate-type design ensures unobstructed full-bore flow with minimal pressure drop.

Key Features:

• Union Bonnet Design: Provides a secure seal and allows easy maintenance.

• Full Bore Flow: Ensures smooth flow with little to no pressure loss.

• Durable Materials: Available in stainless steel, bronze, brass, and cast steel.

• Compact & Serviceable: Simple construction for convenient disassembly and long service life.

• Leak-Free Performance: Reliable sealing for water, oil, steam, and non-corrosive fluids.

🏭 Product/Service Description – Pressure Seal Gate Valve

Pressure Seal Gate Valves are specially designed for high-pressure and high-temperature applications, where leak-tight performance and long service life are critical. Unlike conventional bolted bonnet designs, these valves feature a pressure seal bonnet, in which the body-bonnet joint uses internal system pressure to create a tighter seal as pressure increases.

This design makes them ideal for Class 600 to 2500 service, commonly used in power plants, oil & gas, petrochemical, and refinery applications. Pressure seal gate valves are generally larger in size (2” and above) and provide a reliable solution for superheated steam, feedwater, and other high-pressure services.

🔹 Key Benefits

• Pressure-energized bonnet seal – tighter sealing with rising system pressure

• Superior performance in high-pressure, high-temperature environments

• Robust construction with forged or cast body materials (Carbon Steel, Alloy Steel, Stainless Steel)

• Rising stem, full-bore design for minimal pressure drop

• Long service life with renewable seat and hard-faced trims (Stellite / 13Cr / SS)

• Designed and tested as per ASME B16.34, API 600 / 602, API 598

✅ Summary for Customers:
A heavy-duty isolation valve engineered for critical high-pressure, high-temperature applications, ensuring leak-tight sealing, safety, and reliability in power, oil & gas, and process industries.

Pressure Seal Bonnet, OS & Y Type, Design STD.: API 600/ANSI B16.34, Testing STD.: API 598, Face to Face Dimensions As Per ANSI B16.10, Flange Drilling ANSI B16.5 RF Serrated.

On Request:

IBR Approved / Certification, Extended Bonnet for Cryogenic Service, Jacketed Valves, Locking Arrangement, Stellited / Hard Faces, NACE As Per MR-01-75, Electrical Actuator/Gears, API 6D Design.
Pressure Rating / Class: 900#, 1500#, 2500#
End Connection: Flanged, Butt Weld.
Size: 50MM to 600MM
Material of Constructions (MOC): WCB, WCC, WC1, WC6, WC9, C5, C12, C12A, CF8, CF8M
Trim: 13% Cr. / SS410, Stellited / Hard Faces, SS304, SS316.


Other Grades on Request:
CF3, CF3M, CN7M, CF8C, Duplex- Gr. 4A, Super Duplex- Gr. 5A, Super Duplex- Gr. 6A, Nickel Alloy, Monel, Hastelloy, Inconel, SS904L etc.