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Hard-Sealed Protective Gate Valve with Metal-to-Metal Sealing for Corrosive Media and High-Temperature/Pressure Applications
| Place of Origin | China |
|---|---|
| Brand Name | YOUWEI |
| Certification | CE EAC |
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xProduct Details
| Material | Casting,Brass,Stainless Steel,Ductile Iron,GGG40 | Port Size | DN50-DN1200,Standard,2"-24",DN50-800,3/4" |
|---|---|---|---|
| Power | Manual,Electrical Actuated,Hydraulic,Handwheel Operated,GO | Pressure | Medium Pressure,Low Pressure,PN10-16,PN1.0/PN1.6,250PSI |
| Temperature Of Media | Medium Temperature,Normal Temperature,Low Temperature,-10~100℃ | Media | Water,Oil Etc.,Gas And So On |
| Application | General,irrigation,water Distribution,Industry,Water System | Structure | Gate,Butterfly,Non-Rising Gate Valve |
| Standard Or Nonstandard | Standard | Product Name | Gate Valve,Cast Iron Electric Gate Valve With Non-rising Stem DN40-DN600,DIN/BS Double Socket Type Resilient Seat Gate Valve,steel 2cr13 Stem Handwheel Api 6a Welhead Safety Gate Valve Stem Cap,3/4" Cast Iron Handle OEM 200 Wog Home Depot Brass Gate Valve |
| Standard | DIN,BS,JIS,F5;AWWA C509/C515;ANSI,DIN3352 | Size | DN40-DN600,DN50 ~ DN 1000,2''-24'',DN15 To100 |
| Connection | Flange Ends,Double Flanged,BSP,Socket Ends,Female Thread | Body Material | Ductile Iron,DI/CI,DI,cast Iron,Brass |
| Color | Blue,Customer's Request,Customer's Requirement,Yellow,GREY | Medium | Water,Water Oil Gas |
| Type | Gate Valve,Normal Open,2-way,Non-Rising Stem/ NRS | Valve Type | Gate Valve |
| Seal | Rubber Lined,Metal,PTFE | ||
| Highlight | Metal-to-Metal Sealing Hard-Sealed Protective Gate Valve,Corrosive Media Hard-Sealed Protective Gate Valve,High-Temperature/Pressure Cast Iron Gate Valve |
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Product Description
Hard-Sealed Protective Gate Valve for Harsh Media Applications
Engineered for extreme service environments, our Hard-Sealed Protective Gate Valve represents the pinnacle of safety and reliability in fluid control systems. Designed specifically for harsh and demanding media applications, this valve provides an uncompromising defensive barrier against corrosive, abrasive, and high-pressure operating conditions.
Advanced Hard-Sealing Technology
- Metal-to-Metal Sealing Surfaces: Precision-machined gate and seats create a bubble-tight seal capable of withstanding extreme pressure differentials
- Surface Hardening Treatment: Critical sealing components undergo specialized hardening processes (including carbide overlays or ceramic coatings) to resist erosion and corrosion
- Self-Compensating Design: Maintains sealing integrity despite thermal cycling and wear over extended service life
Robust Construction Features
- Full-Bore Design: Minimizes pressure drop and prevents media accumulation
- Heavy-Duty Body Construction: Manufactured from ASTM-certified materials suitable for specific media compatibility
- Enhanced Stem Protection: Anti-blowout stem design with multiple sealing points prevents stem ejection under overpressure conditions
Harsh Media Compatibility
- Corrosive Media: Suitable for acidic, alkaline, and chemically aggressive fluids
- Abrasive Slurries: Engineered to handle particulate-laden flows without degradation
- High-Temperature/Pressure Applications: Rated for extreme process conditions exceeding standard valve specifications
- Cryogenic Service: Available in specially modified configurations for low-temperature applications
Technical Specifications
Design Standards
- API 600 / API 603 (for corrosion-resistant bolted bonnet valves)
- ASME B16.34 (pressure-temperature ratings)
- ISO 17292 (metal ball valves - applicable design principles)
- Fire-safe certification per API 607/API 6FA where applicable
Pressure-Temperature Ratings
| Parameter | Specification |
|---|---|
| Class Ratings | 150 to 2500, with special classes available |
| Temperature Range | -196°C to +815°C (material-dependent) |
| Pressure Capability | Up to ANSI Class 2500 equivalent |
Material Options
| Component | Material Options |
|---|---|
| Body/Bonnet | 316/304 Stainless Steel, Duplex/Super Duplex, Hastelloy, Inconel, Titanium |
| Trim Materials | Tungsten carbide, Stellite, Ceramic composites |
| Sealing Elements | Flexible graphite, PTFE, or metal seals based on application |
Safety & Reliability Features
Fail-Safe Design
- Dual Sealing System: Primary hard seal with secondary emergency sealing capability
- Fire-Safe Construction: Maintains sealing integrity during fire exposure (optional)
- Antistatic Design: Prevents spark generation in hazardous environments
Operational Security
- Stem Seal System: Multiple-stage packing (Braided graphite/PTFE) with live-loading for automatic adjustment
- Backseat Function: Allows packing replacement under pressure
- Position Indication: Clear open/closed indicators with optional remote position transmitters
Industry Applications
Chemical & Petrochemical
Aggressive media handling, catalyst injection
Power Generation
Fly ash, slurry, and high-temperature steam systems
Mining & Mineral Processing
Abrasive slurry transport, tailings management
Pulp & Paper
Corrosive chemical recovery processes
Oil & Gas
Production and refining of sour crude, wellhead control
Installation & Service Advantages
- Simplified Maintenance: Top-entry design allows in-line maintenance without removal from pipeline
- Interchangeable Components: Standardized trim parts reduce inventory requirements
- Extended Service Life: 3-5 times longer operational life than standard gate valves in harsh services
- Customization Options: Prepared for manual, pneumatic, hydraulic, or electric actuation with various connection variants
Quality Assurance
- Material Certification: Full traceability from mill to finished product
- Non-Destructive Testing: RT, UT, MPI, and PT as per application requirements
- Performance Testing: Standard and extended duration testing per customer specifications
- Comprehensive Documentation: Manuals, test reports, and material certificates provided
Value Proposition: The Hard-Sealed Protective Gate Valve delivers unparalleled safety and longevity in challenging applications where conventional valves fail. By combining advanced materials science with precision engineering, we provide a defensive solution that protects both your processes and personnel while reducing total cost of ownership through extended service intervals and reduced downtime.
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