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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Kleptype
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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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Drukclassificatie
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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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Lichaamsmateriaal
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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)
GARANTIE
SAVVY VALVES streeft naar uitzonderlijke productkwaliteit en zorgeloze aftersalesservice. Onze kleppen hebben een gegarandeerde minimale levensduur van 12 maanden. Gedurende deze periode leveren wij alle benodigde reserveonderdelen en gedetailleerde onderhoudsinstructies gratis. Mocht er binnen de garantieperiode schade ontstaan die niet door mensen is veroorzaakt, dan vervangen wij kosteloos de onderdelen en bieden wij professionele technische ondersteuning. Na de garantieperiode hoeven klanten alleen de kosten van de reserveonderdelen te betalen en profiteren zij nog steeds van kortingen op onderhoudsdiensten. Ons doel is om klanten te helpen de operationele kosten te verlagen en de productie-efficiëntie te verbeteren door middel van betrouwbare kwaliteit en uitgebreide aftersalesservice. Of het nu gaat om technische vragen of onderhoudsbehoeften, ons deskundige team reageert snel om ervoor te zorgen dat uw klepsysteem te allen tijde optimaal blijft presteren.