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Check Valves - MGH YAPI
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Check Valves & Solutions

Automatic valves designed to prevent backflow in piping systems. Essential for protecting pumps, compressors, and process equipment from reverse flow damage.

Check Valve

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Sector / Application Typical Valve Types Standards & Certifications
General Industrial & Process Pump protection, general backflow prevention Swing Check Valve, Dual Plate Wafer Check, Lift Check Valve, Piston Check.
  • Design: API 594 (Wafer & Wafer-Lug), API 6D, API 602, ISO 17292
  • Testing: API 598, API 6D, ISO 5208
  • Face-to-Face: API 594, ASME B16.10
  • Flanges: ASME B16.5, EN 1092-1
Oil & Gas Pipeline & Production Pipeline protection, compressor stations, wellheads Axial Flow (Nozzle) Check, Dual Plate Check, Ball Check, Swing Check with Damping, Non-Slam Design.
  • Design: API 6D (Pipeline), API 594, API 602
  • Special: API 526 (Relief - related std)
  • Sour Service: NACE MR0175/ISO 15156
  • Testing: API 598, API 6D
Water & Wastewater Pump discharge, backflow prevention, potable water Swing Check Valve, Tilting Disc Check, Dual Plate Check, Foot Valve (with strainer), Silent (Non-Slam) Check.
  • Design: AWWA C508 (Swing), AWWA C515 (Resilient)
  • Potable: WRAS, ACS, KIWA, NSF/61
  • Backflow: ASSE 1015, USC FCCCHR
  • Testing: ISO 5208
Power Generation Boiler feedwater, condenser, cooling water, auxiliary systems Tilting Disc Check, Lift Check, Nozzle Check (Axial Flow), Stop-Check Combination Valves, High-Pressure Lift Check.
  • Design: API 594, API 6D, ASME B16.34
  • High-Temp: ASME B16.34 (Pressure-Temp)
  • Nuclear: ASME Section III (N-Stamp)
  • Testing: API 598
Chemical & Petrochemical Corrosive fluids, slurry services, high-purity systems Dual Plate Wafer Check (with special linings), Ball Check, Diaphragm Check, Alloy Construction (Hastelloy, Titanium).
  • Design: API 594, API 6D
  • Lined: ISO 16136 (PTFE lined)
  • Emission: ISO 15848-1/-2 (if actuated)
  • Material: ASTM A351 (CF8M), A494 (Alloy)
Marine & Offshore Seawater cooling, ballast, firefighting, bilge Swing Check Valve, Ball Check, Dual Plate Check, Bronze/Cast Iron/Stainless Steel, Gunmetal.
  • Design: API 594, ISO 17292
  • Approvals: ABS, DNV, LR, BV
  • Naval: MIL-V-22134 (US Navy)
  • Materials: NORSOK M-630 (Offshore)
HVAC & Building Services Chilled/heating water circuits, pump protection Swing Check Valve, Silent Check (Non-Slam), Spring-Assisted Dual Plate, Bronze/CI Body.
  • Design: MSS SP-71 (CI Swing), MSS SP-80 (Bronze)
  • Standards: ASHRAE guidelines
  • Testing: ISO 5208
  • Ends: Flanged, Threaded (NPT)
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