Industrial Trunnion Valves

Name: Industrial Trunnion Valves
Brand: JAYANT IMPEX
Price: 3000.0 INR
Availability: InStock

3000.0 INR/Unit

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Product Details:

Valve Type Trunnion Mounted Ball Valve
Valve Size 1 up to 48 (DN25 to DN1200)
Material Carbon Steel, Stainless Steel, Alloy Steel, Cast Iron (WCB, CF8, CF8M, CF3M, F316L, A105N, etc.)
Features Anti-blowout stem, fire safe design, anti-static device, double block & bleed, emergency sealant injection
Connection Type Flanged, Butt Weld, Socket Weld, Screwed Ends
Control System Manual Handle, Gearbox, Electric Motor Operator, Pneumatic Actuator, Hydraulic Actuator
Application Industrial flow control applications, pipelines, oil & gas industries, petrochemicals, power plants
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Industrial Trunnion Valves Price And Quantity

Price 3000.0 INR/Unit
Minimum Order Quantity 1 Unit

Industrial Trunnion Valves Product Specifications

Sealing PTFE, Metal, or Elastomeric soft-seals
Temperature -29C to +200C (dependent on material and seal)
Disc Trunnion-mounted precision ball
Media Water, Oil, Gas, Steam, Chemicals
Pin High-strength trunnion supported pin
Valve Type Trunnion Mounted Ball Valve
Valve Size 1 up to 48 (DN25 to DN1200)
Pressure Class 150 to 2500, PN10-PN420
Structure Trunnion mounted ball valve with split or three-piece body
Application Industrial flow control applications, pipelines, oil & gas industries, petrochemicals, power plants
Power Manual, Electric, Pneumatic and Hydraulic powered options
Type Trunnion Ball Valve
Voltage 24V/110V/230V/415V AC/DC (for electric actuated types)
Features Anti-blowout stem, fire safe design, anti-static device, double block & bleed, emergency sealant injection
Material Carbon Steel, Stainless Steel, Alloy Steel, Cast Iron (WCB, CF8, CF8M, CF3M, F316L, A105N, etc.)
Control System Manual Handle, Gearbox, Electric Motor Operator, Pneumatic Actuator, Hydraulic Actuator
Connection Type Flanged, Butt Weld, Socket Weld, Screwed Ends
Port Size Full Bore, Reduced Bore, DN25 to DN1200

Fire Safe Certification API 607, ISO 10497 compliant
Operation Temperature Range Custom configurations up to 400C available
Blow-out Proof Stem Integrated for enhanced safety
Leakage Class ANSI/FCI 70-2 Class VI
Mounting Pad ISO 5211 for actuator compatibility
Stem Packing Multiple V-type with live loading or graphite packing
Inspection and Testing API 598, EN12266-1/2
Coating/Finish Epoxy powder coated, painted, or bare finish as specified
Body Design Two-piece, Three-piece, or Fully welded construction
Face-to-Face Standard ASME B16.10, EN558
Anti-Static Device Standard configuration for all sizes
End Connection Standard ASME/ANSI B16.5, B16.25, DIN, JIS, EN

Product Description

Industrial trunnion-mounted ball valves are the heavy-duty workhorses of the quarter-turn valve world. Unlike standard floating ball valveswhere the ball is suspended by the seats and moves slightly under pressurea trunnion valve anchors the ball at the top and bottom.

This design makes them indispensable for high-pressure, large-diameter applications in oil and gas, petrochemicals, and power generation.

How It Works: The Mechanical Core

In a trunnion-mounted design, the ball is fixed in place by a shaft at the top (the stem) and a pin or support at the bottom (the trunnion).

Because the ball cannot move downstream when pressure builds up, the sealing mechanism works in reverse compared to a floating valve:

Spring-Loaded Seats: The line pressure forces the upstream seat against the stationary ball to create a seal.
Constant Contact: Internal springs behind the seats ensure they remain in tight contact with the ball even at zero or low pressure.

Key Advantages in Industrial Applications

1. Lower Operating Torque

Because the trunnion absorbs the hydraulic thrust from the line pressure, the ball doesn't press into the downstream seat. This drastically reduces friction, meaning you can use smaller, less expensive actuators to open and close the valve.

2. Full Rated Pressure Performance

They handle extreme pressures (up to ASME Class 2500) and large sizes (often up to 60 inches or more) without seizing or compromising the seal.

3. Double Block and Bleed (DBB)

Most industrial trunnion valves inherently provide DBB capability. When the valve is closed, both the upstream and downstream seats seal independently against the ball. Any fluid trapped in the body cavity can be safely vented or bled off through a drain plug, allowing operators to verify the seal's integrity without interrupting the pipeline.

4. Automatic Cavity Pressure Relief

If liquid traps in the body cavity and expands due to temperature spikes, the localized pressure can easily surpass the pipeline pressure. Trunnion valve seats are designed to act as relief valves, automatically cracking open to vent excess cavity pressure back into the pipeline.

Material Configurations & Standards

Given the harsh environments these valves face, material selection is highly rigorous:

Component	Standard Materials	High-Performance Alloys
Body & Cap	Carbon Steel (A105, WCB), Low-Temp Carbon Steel (LCC, LF2)	Stainless Steel (316, CF8M), Duplex/Super Duplex, Inconel
Ball & Trunnion	A105 + Electroless Nickel Plating (ENP)	316 SS, 17-4 PH, or solid exotic alloys
Seats	Soft (PTFE, Devlon, PEEK)	Metal-to-Metal (Tungsten or Chromium Carbide coating)

Governing Design Standards

API 6D: The primary global standard for pipeline valves (specifies pressure testing, dimensions, and quality control).
ASME B16.34: Covers pressure-temperature ratings and dimensions.
API 6FA / ISO 10497: Fire-safe testing standards ensuring the valve seals even if soft components burn away.

Versatile Body Designs for Every Application

Choose from two-piece, three-piece, or fully welded trunnion valve bodies to suit your industry needs. Each design promises durability and adaptability, whether you require ease of maintenance, compactness, or enhanced pressure resistance for pipeline flow control. This flexibility supports diverse industries, including oil & gas and power plants.

Certified Safety and Performance Standards

Our trunnion valves are rigorously tested and certified to global fire safety (API 607, ISO 10497) and leakage (ANSI/FCI 70-2 Class VI) standards. Integrated safety features like blow-out proof stems and anti-static devices ensure maximum protection, making them ideal for critical and hazardous process environments.

Superior Sealing and Reliable Operation

Trunnion valves offer sealing options in PTFE, metal, or elastomeric soft-seals, maintaining tight shut-off even under extreme conditions. Multiple V-type or graphite stem packing supports high temperatures up to 400C, while double block & bleed and emergency sealant injection enhance operational reliability.

Worldwide Compatibility and Easy Integration

Designed for global application, these valves fulfill ASME, ANSI, DIN, JIS, and EN standards with mounting pads (ISO 5211) for actuator compatibility. Wide power operation choices enable manual, electric, pneumatic, or hydraulic control-ideal for automation or remote operation in industrial flow systems.

FAQ's of Industrial Trunnion Valves:

Q: How do trunnion-mounted valves improve safety in industrial applications?

A: Trunnion-mounted ball valves feature integrated blow-out proof stems and anti-static devices to minimize the risk of stem failure and static buildup, reducing the chance of leakage or accidental ignition. These features, along with fire-safe certification (API 607, ISO 10497), provide additional safety in hazardous environments.

Q: What industries typically use these trunnion ball valves?

A: Trunnion ball valves are used extensively in sectors such as oil & gas, petrochemicals, power generation, water treatment, and chemical processing, wherever robust flow control and leak-tightness are critical, especially in high-pressure or hazardous media pipelines.

Q: Where can these industrial valves be installed and what media can they handle?

A: These valves are suitable for installation in pipelines, process plants, and flow distribution systems handling water, oil, gas, steam, and a variety of chemicals. Their material versatility (carbon steel, stainless, alloy, cast iron) and sealing options (PTFE, metal, elastomeric) allow them to handle a broad spectrum of fluids.

Q: What end connections and standards are supported by these valves?

A: Industrial trunnion valves accommodate flanged, butt weld, socket weld, and screwed ends, manufactured per ASME/ANSI B16.5, B16.25, DIN, JIS, and EN standards, ensuring compatibility with international pipeline specifications and installation requirements.

Q: When should you choose a fully welded design over a two- or three-piece body?

A: A fully welded body is preferred in buried or subsea service where leakage risk must be minimized and long-term, maintenance-free operation is paramount. Two- and three-piece bodies are better suited for applications requiring ease of maintenance and internal inspection.

Q: How does multiple V-type or graphite packing benefit valve operation?

A: Multiple V-type with live loading or graphite stem packing ensures consistent sealing performance, adapting automatically to operating pressure and temperature fluctuations, and providing reliable tightness even at temperatures up to 400C, thus extending service life.

Q: What are the advantages of the ISO 5211 mounting pad feature?

A: The ISO 5211 mounting pad standardizes actuator installation, allowing easy and direct fitting of electric, pneumatic, or hydraulic actuators. This simplifies automation and integration into control systems, boosting operational efficiency and flexibility.

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