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C95800 dual disc check valve

C95800 dual disc check valve

1. Sealing System
o Pure FKM (Viton®) seats bonded directly to C95800 discs
o Zero metal sealing components – eliminates galling risk
o Leakage rate: ≤ 0.01 ml/min per inch seat dia. (Class VI)
2. Simplified Disc Design
o No Stellite hardfacing – cost-optimized for non-abrasive services
o Disc surface: Machined to Ra 3.2 μm for optimal rubber adhesion
3. Standard Hinge Mechanism
o No torsion springs (non-slam feature removed)
o Gravity-assisted closing (vertical installation required for optimal performance)

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DUAL PLATE WAFER CHECK VALVE | PN16 | SOFT SEAT DESIGN

PARAMETER

SPECIFICATION

NOTES

Kleptype

Dual Plate Check Valve

Standard design (no anti-slam)

Design Standard

API 594 / ASME B16.34

Wafer type per Annex A

Size Range

DN 50 to DN 1200 (2" to 48")

Full bore (100% port)

Drukclassificatie

PN16 (16 bar @ 120°C)

 

End Connection

RF Flanges per EN 1092-1

Face-to-face: EN 558-20

Lichaamsmateriaal

ASTM B148 C95800 (Ni-Al Bronze)

UNS C95800

Disc Material

ASTM B148 C95800 (No hardfacing)

As-cast surface finish Ra ≤ 3.2 μm

Shaft Material

Monel K500 (UNS N05500)

Solution-treated & aged

Seat Material

Full Fluororubber (FKM)

Viton® FKM-75, bonded to disc

Spring Material

Monel K500

 

Hinge Bushings

Self-lubricating bronze

Maintenance-free

Temperature Range

Standard: -20°C to +150°C

Seat limit: -29°C to +200°C (short term)

Flow Direction

Horizontal / Vertical upflow

 

Hydrostatic Test Press

24 bar (1.5 × PN16) per EN 12266-1

 

Seat Leakage Class

API 598 Class VI (Soft seat)

Bubble-tight shutoff

Cracking Pressure

≤ 0.1 bar

 

Flow Coefficient (Kvs)

2800 (for DN150 valve)

Higher vs. metal-seat designs

Max Flow Velocity

8 m/s

 

Seal Configuration

Elastomer-to-Body Direct Sealing

No metal-to-metal contact

Certifications

• PED 2014/68/EU Cat. II
• WRAS

Material Certs: EN 10204 3.1

KEY UPDATES & FEATURES

  1. 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)
  2. Simplified Disc Design
    • No Stellite hardfacing – cost-optimized for non-abrasive services
    • Disc surface: Machined to Ra 3.2 μm for optimal rubber adhesion
  3. Standard Hinge Mechanism
    • No torsion springs (non-slam feature removed)
    • Gravity-assisted closing (vertical installation required for optimal performance)

PERFORMANCE DATA

Characteristic

Value

Cycle Life (Water)

>50,000 cycles

Max Backpressure Resistance

25 bar (PN16 × 1.56)

Chemical Compatibility

Water, oils, H₂S ≤2000 ppm, weak acids (pH>4)

Installation Angle Limit

Vertical: 0°±10°
Horizontal: ±3° level

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.

 

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