Plug Valve Manufacturer in India

Speciality Valve is a Plug Valve Manufacturer in India offering high-performance valves for reliable isolation and flow control in oil and gas, petrochemical, chemical, power, and water treatment industries. Our plug valves are designed for tight shut-off, smooth operation, and low maintenance, ensuring long service life even in the most demanding operating conditions.

Function & Working

A plug valve regulates or isolates flow by rotating a cylindrical or tapered plug within the valve body. When the plug port aligns with the flow path, the fluid passes through freely. Rotating the plug 90° shuts off the flow completely. The design ensures quick operation, compact size, and a bubble-tight seal, ideal for high-pressure and high-temperature service.

Advantages

Quick 90° operation with minimal torque
Compact, low-weight construction suitable for space-limited systems
Excellent sealing for both gas and liquid service
Handles corrosive, viscous, or abrasive fluids
Easy maintenance and long operating life

Types of Plug Valves

Lubricated Plug Valve – uses sealant injection to reduce friction and enhance sealing in high-pressure service
Non-Lubricated Plug Valve – PTFE or elastomer sleeves provide sealing without lubrication
Jacketed Plug Valve – maintains media temperature for bitumen, sulphur, or polymer service
Eccentric Plug Valve – quarter-turn non-binding design for slurry, wastewater, and abrasive service
Lift Plug Valve – plug lifts before rotation to minimize seat wear
Twin Seal Plug Valve – double block and bleed function for critical isolation
Orbit Plug Valve – cam mechanism for tight shut-off and zero leakage
3-Way / 4-Way Plug Valve – for mixing or diverting flow applications
Connected Lift Plug Valve – ensures smooth motion for frequent operation

Industries Served

Oil and Gas
Petrochemical and Refining
Water and Wastewater Treatment
Power Generation
Mining and Minerals Processing
Marine and Offshore
Paper and Pulp
Chemical and Fertilizer Industries

Design & Testing Standards

Design & Manufacturing: API 6D, ASME B16.34, ISO 5996, BS 5353
Face-to-Face Dimensions: ASME B16.10
Flange Standards: ASME B16.5 / B16.47, EN 1092
Butt Weld Ends: ASME B16.25
Testing: API 598, ISO 5208, EN 12266-1
Fire-Safe Design: API 607 / ISO 10497
NACE Compliance: MR0175 / ISO 15156 (for sour service)

Materials of Construction

Body and Bonnet:
Carbon Steel (WCB, WCC, WC6), Stainless Steel (SS304, SS316, SS316L, SS904L, CF8, CF8M), Duplex and Super Duplex (F51, F53, F55), Ductile Iron, Cast Iron

Trim Materials:
SS316 / SS316L, SS410 / SS420, Monel 400, Inconel 625, Hastelloy C276, Stellite 6 Overlay, ENP Coating, Tungsten Carbide (for severe service)

Seat and Seal Options:
PTFE, RPTFE, Devlon, PEEK, Graphite, Metal-to-Metal (Stellite or TC)

Technical Specifications

Size Range: DN15 – DN1200 (½″ – 48″)
Pressure Ratings: Class 150 – 2500 / PN10 – PN450
Temperature Range: –46°C to +425°C (material dependent)
End Connections: Flanged, Butt Weld (BW), Socket Weld (SW), Threaded (NPT/BSP)
Operation: Manual Lever, Gear Operated, Pneumatic Actuated, Electric Actuated

Why Choose Speciality Valve

Speciality Valve manufactures plug valves that deliver reliable sealing, low operating torque, and smooth control under the most challenging process conditions. Each valve is designed, machined, and tested as per international standards for maximum safety and performance. With comprehensive material options and actuation configurations, we ensure compatibility for every industrial application.

As a trusted Plug Valve Manufacturer in India, Speciality Valve provides durable, precision-engineered solutions that enhance operational efficiency, minimize downtime, and ensure long-lasting system protection.