High performance butterfly valve

Product Overview

This High Performance Wafer Butterfly Valve (Standard Model: D372H Double Offset, D373H Triple Offset) is an industrial-grade pipeline control valve built for high temperature and high pressure harsh conditions. It features a core double/triple offset friction-free metal hard seal structure with a compact wafer type body, boasting low operating torque, long service life, bidirectional zero leakage, high pressure and high temperature resistance. Fully compliant with API 609, MSS SP-68 and other international standards, it covers sizes DN50-DN1200 (NPS 2″-48″), widely used in key industrial pipelines for petrochemical, power plants, oil & gas, metallurgy and coal chemical industries.

Key Features

1. Offset Friction-Free Structure, Low Torque & Long Service LifeDouble/triple offset 3D design ensures no sliding friction of sealing surfaces during full opening and closing stroke. Operating torque is over 60% lower than ordinary butterfly valves, with a cycle life of more than 10,000 times, 5-8 times longer than standard soft seal butterfly valves, ideal for frequent operation conditions.
   

   ---

2. Wafer Type Compact Body, Space Saving & Easy InstallationOne-piece ultra-thin cast body with face to face dimension in full compliance with API 609, minimal axial size greatly saves installation space, perfect for narrow spaces and dense pipeline layouts. Built-in flange positioning spigot allows direct clamping between global mainstream standard flanges (GB, ANSI, JIS, DIN), single-person installation and disassembly with easy maintenance.
   

   ---

3. High Performance Metal Seal, Zero Leakage Under Full Working ConditionsSealing surfaces overlaid with Stellite hard alloy, hardness up to HRC40-65, with excellent high temperature resistance, erosion resistance and anti-seizure performance. Elastic metal seat realizes self-energized bidirectional sealing, tighter with higher pressure, reaching ANSI/FCI 70-2 Class V sealing grade. It automatically compensates for thermal expansion and contraction under high and low temperature, eliminating sealing failure.
   

   ---

   

   ---

4. Full Material Adaptation, High Pressure & Corrosion ResistanceCore parts are available in WCB carbon steel, 304/316 stainless steel, duplex steel, WC6 Cr-Mo steel, etc. Pressure rating covers PN16-PN100 (Class150-Class600), with excellent acid, alkali and chloride corrosion resistance for various harsh working conditions.
   

   ---

5. Full Drive Adaptation & Complete Safety ProtectionReserved ISO 5211 standard mounting pad for direct connection with lever handle, worm gear, pneumatic/electric actuators, suitable for local operation and remote automatic control. Standard anti-static device, blow-out proof stem, high temperature packing seal, optional API 607 fire-safe structure, ensuring stable and safe operation.

Applications

Petrochemical process pipelines, power plant high temperature steam systems, oil & gas long-distance pipelines, metallurgy high temperature flue gas systems, coal chemical high temperature medium pipelines, marine high pressure pipelines, flue gas desulfurization and denitrification systems.

Product Summary

This High Performance Wafer Butterfly Valve focuses on the two core advantages of high performance offset seal and wafer type compact design. It features low torque operation, long service life, zero leakage, high pressure and high temperature resistance, and easy installation. It perfectly solves the pain points of ordinary butterfly valves such as low pressure resistance, poor high temperature resistance and easy wear, making it the preferred valve for pipeline control under harsh working conditions.