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Help CenterHigh Temperature Double Eccentric Butterfly Valve With Metal Seat for Steam Service
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Shanghai Sote Valve Co., Ltd., a trusted industrial valve manufacturer based in Shanghai, China, proudly presents our High Temperature Double Eccentric Butterfly Valve with Metal Seat. Engineered specifically for demanding steam applications, this valve delivers exceptional reliability in extreme thermal environments where conventional valves fail. Our rigorous manufacturing standards ensure zero-leakage performance even after prolonged high-temperature exposure, providing critical process safety for your operations.
Core Technical Advantages:
Patented triple-offset geometry creates frictionless sealing action during operation
Forged stainless steel disc and stem with surface hardening treatment
Fire-safe metal-to-metal secondary sealing system
Bidirectional pressure capability with bubble-tight shutoff
Performance Specifications:
| Parameter | Value |
|---|---|
| Max Operating Temperature | 600°C (1112°F) |
| Pressure Class | PN10/16/25/40 (ASME 150/300 optional) |
| Seat Leakage | Class VI (ANSI FCI 70-2) |
| Body Materials | WCB, CF8, CF8M, Duplex |
| Seat Materials | Stainless Steel + Inconel Layer |
The unique double eccentric design eliminates rubbing contact between sealing surfaces during 90° rotation, significantly reducing wear. Our proprietary metal seat construction features layered alloy composition that maintains elasticity at elevated temperatures. This thermal resilience prevents seat deformation and galling - common failure points in steam valves. The corrosion-resistant stem sealing system incorporates multiple graphite rings and anti-blowout stem design for fail-safe operation.
Industry Applications:
Power plant steam isolation and bypass systems
Petrochemical refinery high-temperature process lines
District heating networks and thermal oil circuits
Pulp & paper digesters and recovery boilers
Shanghai Sote Valve maintains full traceability from raw materials to finished products, with dimensional verification against API 609 standards. Our Shanghai manufacturing facility employs CNC machining centers and automated welding systems to guarantee dimensional precision. With over 15 years of specialized experience in high-temperature valves, we provide technical support throughout the valve lifecycle - from selection guidance to maintenance optimization.
FAQ:
Q1: What makes this valve suitable for superheated steam service?
A: The layered metal seat maintains elasticity at 600°C while the eccentric design prevents thermal binding. Special stem packing materials withstand continuous steam exposure.
Q2: Can this valve handle thermal cycling?
A: Yes, our seat design accommodates differential expansion rates between body and disc during temperature fluctuations.
Q3: What maintenance intervals are typical?
A: Under normal steam service, we recommend inspection every 5 years. The metal seat requires no periodic adjustment.
Q4: Are actuator mounting pads standardized?
A: Yes, we provide ISO 5211 mounting pads compatible with major actuator brands. Customizations available.
Q5: How does double eccentric differ from triple eccentric?
A: Double eccentric has offset stem and conical seat, while triple adds angular contact geometry. Both provide metal-seated sealing.
Q6: What certifications do you provide?
A: Standard valves include material test reports. Third-party certifications like TUV are available upon request.
For critical steam isolation applications where safety and longevity are paramount, Shanghai Sote's engineered solution delivers measurable cost savings through reduced maintenance downtime and extended service life. Contact our Shanghai technical team today for application-specific sizing calculations and material recommendations.
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