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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

バルブタイプ

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)

圧力定格

PN16 (16 bar @ 120°C)

 

End Connection

RF Flanges per EN 1092-1

Face-to-face: EN 558-20

ボディ素材

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

モネル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)

保証

SAVVY VALVESは、卓越した製品品質と安心のアフターサービスの提供に尽力しています。当社のバルブは最低12ヶ月の耐用年数を保証しており、その期間中は必要なスペアパーツと詳細なメンテナンスマニュアルを無料でご提供いたします。保証期間中に人為的要因以外の損傷が発生した場合は、無償で部品を交換し、専門的な技術サポートを提供いたします。保証期間終了後は、スペアパーツ代のみご負担いただき、割引メンテナンスサービスは引き続きご利用いただけます。当社の目標は、信頼性の高い品質と包括的なアフターサービスを通じて、お客様の運用コスト削減と生産効率の向上を支援することです。技術的なお問い合わせやメンテナンスのご依頼など、当社の専門チームが迅速に対応し、お客様のバルブシステムが常に最適なパフォーマンスを維持できるよう尽力いたします。

 

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