Flanged tilting disc check valve

Flanged Tilting Disc Check Valve Overview

Engineered for high-reliability flow reversal prevention, the flanged tilting disc check valve delivers exceptional performance in horizontal and vertical pipeline installations. Its tilting disc mechanism minimizes water hammer and pressure drop while providing tight shut-off even under low backpressure conditions. Compared to conventional swing designs, this model offers faster closing response and reduced slamming, making it ideal for critical service in water treatment, HVAC, petrochemical, and marine systems. For applications requiring a lighter, space-saving alternative, our Wafer tilting type check valve conforms to tight footprints between flanges without compromising flow efficiency. When project specifications demand a durable, industry-standard configuration with full flange ratings, the robust Tilting Disc Check Valve series provides a comprehensive range of materials and pressure classes to match exact service conditions.


The flanged tilting disc check valve is built around a precisely balanced disc that pivots on a shaft positioned above the seating surface, enabling rapid, non-slam closure as flow decelerates. The body and bonnet are manufactured from durable cast materials, with seat options in resilient EPDM, NBR, or metal-to-metal configurations to handle diverse media temperatures and chemical compatibilities. Internal geometry is optimized through computational fluid dynamics to minimize turbulence and maximize Cv values, contributing to lower energy costs across pumping systems. This valve can be installed in horizontal lines with the cover facing upward and in vertical flows with upward direction, while its integral flange drilling accommodates ASME Class 150, 300, or PN-rated pipework. Accessible top-entry design simplifies in-line inspection and disc replacement without removing the valve body from the pipeline, significantly cutting maintenance downtime in continuous-process plants.

Key Product Features

  • Smooth, stable disc motion via short-stroke tilting action — reduces water hammer and pipe stress
  • Low cracking pressure and high Cv ensure minimal energy loss across the check valve
  • Full-bore design with no reduction in flow area, avoiding trapped debris and clogging
  • Bolted cover enables quick access to internal components; disc and seat can be serviced in line
  • Available with soft or metal seats for extended temperature range and chemical resistance
  • Flanged ends to EN 1092, ASME B16.5, or JIS B2220 standards for easy integration
  • Suitable for water, steam, oil, gas, and mild corrosive fluids depending on material selection
  • Cast body and disc in carbon steel, stainless steel, or duplex alloys — corrosion-resistant coatings optional
  • Short face-to-face dimension according to API 594 (dual plate) and manufacturer’s standard for tilting disc types
  • Silent closure feature protects pumps and compressors from reverse-spin damage

Technical Specifications

Parameter Specification
Nominal Diameter DN 50 – DN 1200 (2″ – 48″)
Pressure Rating PN 10 / PN 16 / PN 25 / PN 40; Class 150 / Class 300
Body Material Cast iron, Ductile iron, WCB, CF8, CF8M, duplex 4A/5A
Disc Material CF8, CF8M, duplex stainless steel, with optional rubber lining
Seat & Seal EPDM, NBR, Viton, PTFE, metal (Stellite / stainless steel)
Operating Temperature -20°C to +200°C (soft seats); up to +400°C (metal seats)
Connections Raised face flanges to ASME B16.5 / EN 1092 / JIS B2220
Design Standard API 6D, API 594, EN 13709; fugitive emission control per ISO 15848-1 (optional)
Flow Direction Unidirectional — horizontal (cover up) or vertical (upward flow only)
Testing Shell: 1.5 × rated pressure; Seat: 1.1 × rated pressure — acc. API 598
Certification CE, ATEX (zone 2 option on request), NACE MR0175 for sour service
Optional Features Counterweight for heavy-duty vertical installations, limit switches, drain plug

Common Material Combinations

Body Disc Seat Typical Application
Ductile Iron CF8M NBR Municipal water & wastewater
Cast Steel WCB CF8 Metal (13Cr) Steam and thermal oil systems
CF8M CF8M PTFE Chemical processing
Duplex 5A Duplex 5A Metal (Stellite) Offshore / seawater

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