Butterfly Valve Manufacturer in India

Speciality Valve is a Butterfly Valve Manufacturer in India supplying resilient-seated, high-performance double-offset, triple-offset (metal-seated), and PTFE/PFA-lined butterfly valves for demanding industrial services. Designs deliver low pressure drop, tight shut-off, and reliable torque-sealing across continuous duty cycles.

Function & Working

A circular disc rotates 90° on a stem to open or close the flow path.

• Concentric (resilient-seated): cost-effective isolation for utilities.

• Double-offset (high-performance): reduced seat wear, higher ΔP/temperature capability.

• Triple-offset (TOV): conical, metal-to-metal fire-safe sealing for severe service.

Advantages

• Quarter-turn operation with high Cv and compact footprint

• Long seat life (double/triple-offset geometries)

• Broad seat/liner options for chemicals, steam, seawater, and cryogenic utilities

• Wafer, lug, and double-flanged bodies for straightforward installation and maintenance

Types Offered

• Concentric (Resilient-Seated) Butterfly Valve

• High-Performance Double-Offset Butterfly Valve

• Triple-Offset (TOV) Metal-Seated Butterfly Valve

• PTFE-Lined / PFA-Lined Butterfly Valve

Industries Served

• Oil & Gas

• Petrochemical & Refining

• Power Generation & Steam Systems

• Water & Wastewater Treatment

• Desalination & Marine

• Chemical & Fertilizer

• District Cooling & HVAC

• Pulp & Paper

• LNG & Cryogenic Utilities

Material of Construction (Body)

Disc / Shaft (Trim)

• Disc: 316/316L, Duplex/Super Duplex, Aluminium Bronze C95800, Inconel 625; Stellite-overlaid (TOV)

• Shaft: 17-4PH, 410/420, 316/316L, Duplex; NACE-compliant options

Seats / Liners

• Resilient: EPDM, NBR/HNBR, FKM, Silicone (potable-water compounds on request)

• Chemical / High-Purity: PTFE/RPTFE, PFA-lined body/seat

• High Temp / Severe: Metal-seated (laminated/solid) with graphite backup (TOV)

• Engineering plastics (special): PEEK (case-by-case)

Technical Specifications

• Design Standards: API 609 (Cat. A/B), EN 593, MSS SP-67, ASME B16.34

• Waterworks Compliance (where specified): AWWA C504 / AWWA C516; internal coatings per AWWA C550

• Face-to-Face: ISO 5752 / EN 558, ASME B16.10 (as applicable)

• Testing: API 598 / ISO 5208 (hydrostatic & pneumatic)

• Fire-Safe (TOV): API 607 / ISO 10497 (on request)

• Fugitive Emissions: ISO 15848-1 / API 641 (on request)

• Sizes: DN50 – DN2400 (2″ – 96″) depending on type

• Pressure Ratings:

  • Concentric (Resilient): PN6 – PN25 (typical)

  • Double-Offset (HPBV): Class 150 / 300 (PN10 – PN50)

  • Triple-Offset (TOV): up to Class 600 (PN100) depending on size/material

• End Connections: Wafer, Lug, Double-Flanged (RF/RTJ)

• Operation: Manual lever/gear, Pneumatic, Electric, Hydraulic actuation; positioners/limits available

Selection Guide (quick reference)