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)

문의하기

DUAL PLATE WAFER CHECK VALVE | PN16 | SOFT SEAT DESIGN

PARAMETER	SPECIFICATION	NOTES
밸브 유형	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)
압력 등급	PN16 (16 bar @ 120°C)
End Connection	RF Flanges per EN 1092-1	Face-to-face: EN 558-20
본체 재질	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	모넬 K500
Hinge Bushings	Self-lubricating bronze	Maintenance-free
온도 범위	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

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

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)

보증

SAVVY VALVES는 탁월한 제품 품질과 안심할 수 있는 애프터서비스를 제공하기 위해 최선을 다하고 있습니다. 당사 밸브는 최소 12개월의 서비스 수명을 보장하며, 이 기간 동안 필요한 모든 예비 부품과 자세한 유지보수 지침을 무상으로 제공합니다. 보증 기간 내에 인위적인 손상이 아닌 다른 원인으로 인한 손상이 발생할 경우, 무상으로 부품을 교체하고 전문 기술 지원을 제공합니다. 보증 기간이 만료된 후에는 예비 부품 비용만 지불하시면 되며, 할인된 유지보수 서비스 혜택도 누리실 수 있습니다. 당사의 목표는 신뢰할 수 있는 품질과 포괄적인 애프터서비스를 통해 고객의 운영 비용을 절감하고 생산 효율성을 향상시키는 것입니다. 기술 문의나 유지보수가 필요하시면 언제든지 전문가 팀이 신속하게 대응하여 밸브 시스템이 항상 최적의 성능을 유지하도록 보장합니다.