Wafer-Type Metal-Seated (Hard Seal) Butterfly Valve

Model: D373H/Y
Actuation: Gear, Pneumatic, Electric, Manual
Connection Type: Wafer, Flanged
Structure Type: Triple-Eccentric
Sealing Type: Metal Hard Seal
Pressure Range: 1.6 – 4.0 MPa
Nominal Diameter: DN50 – DN1400
Common Materials: WCB (Carbon Steel), A105, 304 Stainless Steel, 316 Stainless Steel, CF8, etc.

Category:

Applications
The metal-seated butterfly valve with hard seal adopts a precision J-shaped elastic seal and a triple-eccentric, multi-layer metal hard-seal structure. It is widely used in industrial pipelines with media temperatures up to 425°C, including metallurgy, power, petrochemical, water supply, and municipal construction, for regulating flow and shutting off fluids.

Key Features:
Triple-Eccentric Hard Seal Design: The valve seat and disc experience almost no wear while providing reliable sealing.
Durable Stainless Steel Seal Ring: Combines metal hard seal and elastic seal characteristics; provides reliable sealing at both low and high temperatures, corrosion resistance, and long service life.
Wear-Resistant Disc Surface: Disc sealing face overlaid with cobalt-based hard alloy ensures excellent wear resistance and long service life.
Reinforced Large-Size Disc: Large discs use a ribbed structure for high strength, large flow area, and low flow resistance.
Bidirectional Sealing: Installation is independent of media flow direction and spatial orientation; can be installed in any direction.
Versatile Actuation Options: Drive units can be installed in multiple positions (90° or 180° rotation) for convenient operation.