DUAL PLATE WAFER CHECK VALVE | PN16 | SOFT SEAT DESIGN
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PARAMETER
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SPECIFICATION
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NOTES
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Tipo de válvula
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Dual Plate Check Valve
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Standard design (no anti-slam)
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Design Standard
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API 594 / ASME B16.34
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Wafer type per Annex A
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Size Range
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DN 50 to DN 1200 (2" to 48")
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Full bore (100% port)
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Clasificación de presión
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PN16 (16 bar @ 120°C)
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End Connection
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RF Flanges per EN 1092-1
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Face-to-face: EN 558-20
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Material del cuerpo
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ASTM B148 C95800 (Ni-Al Bronze)
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UNS C95800
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Disc Material
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ASTM B148 C95800 (No hardfacing)
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As-cast surface finish Ra ≤ 3.2 μm
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Shaft Material
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Monel K500 (UNS N05500)
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Solution-treated & aged
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Seat Material
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Full Fluororubber (FKM)
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Viton® FKM-75, bonded to disc
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Spring Material
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Monel K500
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Hinge Bushings
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Self-lubricating bronze
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Maintenance-free
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Temperature Range
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Standard: -20°C to +150°C
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Seat limit: -29°C to +200°C (short term)
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Flow Direction
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Horizontal / Vertical upflow
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Hydrostatic Test Press
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24 bar (1.5 × PN16) per EN 12266-1
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Seat Leakage Class
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API 598 Class VI (Soft seat)
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Bubble-tight shutoff
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Cracking Pressure
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≤ 0.1 bar
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Flow Coefficient (Kvs)
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2800 (for DN150 valve)
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Higher vs. metal-seat designs
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Max Flow Velocity
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8 m/s
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Seal Configuration
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Elastomer-to-Body Direct Sealing
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No metal-to-metal contact
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Certifications
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• PED 2014/68/EU Cat. II • WRAS
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Material Certs: EN 10204 3.1
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KEY UPDATES & FEATURES
- Sealing System
- Pure FKM (Viton®) seats bonded directly to C95800 discs
- Zero metal sealing components – eliminates galling risk
- Leakage rate: ≤ 0.01 ml/min per inch seat dia. (Class VI)
- Simplified Disc Design
- No Stellite hardfacing – cost-optimized for non-abrasive services
- Disc surface: Machined to Ra 3.2 μm for optimal rubber adhesion
- Standard Hinge Mechanism
- No torsion springs (non-slam feature removed)
- Gravity-assisted closing (vertical installation required for optimal performance)
PERFORMANCE DATA
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Characteristic
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Value
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Cycle Life (Water)
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>50,000 cycles
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Max Backpressure Resistance
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25 bar (PN16 × 1.56)
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Chemical Compatibility
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Water, oils, H₂S ≤2000 ppm, weak acids (pH>4)
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Installation Angle Limit
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Vertical: 0°±10° Horizontal: ±3° level
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MATERIAL SPECIFICS
Fluororubber Seats (Viton® FKM-75):
- Hardness: 75 Shore A
- Compression Set: ≤15% (70h @ 200°C per ASTM D395)
- Fluid Resistance: Swell ≤10% in ASTM Oil #3 @ 150°C
Disc (C95800 without hardfacing):
- Max Surface Pressure: 50 MPa (with FKM seat)
- Surface Finish: CNC-machined to Ra ≤3.2 μm
COMPLIANCE & APPLICATIONS
Standards:
- API 594 (Dimensional/Testing)
- ISO 5208 (Leakage Testing)
- WRAS (Water Supply Regulations)
Typical Services:
- Cooling water systems
- Hydraulic oil return lines
- Low-abrasion chemical transfer (e.g., glycol, solvents)
- Potable water distribution
OPTIONAL FEATURES
▢ EPDM Seats (for ozone/steam resistance)
▢ Disc Protection Coatings (e.g., Xylan® for sticky media)
▢ Position Indicator
▢ PTFE Hinge Bushings (extended chemical resistance)
GARANTÍA
SAVVY VALVES se compromete a ofrecer una calidad de producto excepcional y un servicio posventa sin complicaciones. Nuestras válvulas tienen una vida útil mínima garantizada de 12 meses, durante los cuales suministraremos todos los repuestos necesarios e instrucciones detalladas de mantenimiento de forma gratuita. Durante el período de garantía, si se produce algún daño no provocado por el hombre, reemplazaremos los componentes sin coste alguno y ofreceremos soporte técnico profesional. Una vez vencida la garantía, los clientes solo deberán pagar el coste de los repuestos y seguirán beneficiándose de descuentos en los servicios de mantenimiento. Nuestro objetivo es ayudar a los clientes a reducir los costes operativos y mejorar la eficiencia de la producción mediante una calidad fiable y un soporte posventa integral. Ya sea para consultas técnicas o necesidades de mantenimiento, nuestro equipo de expertos responderá con prontitud para garantizar que su sistema de válvulas mantenga un rendimiento óptimo en todo momento.