BSO Ballseal workshop floor showing a heavy-duty 14-inch Class 900 CF8 stainless steel swing check valve for high-pressure pipeline backflow prevention.

14″ Class 900 CF8 Stainless Steel Swing Check Valve, Flanged, BS 1868| BSO Ballseal

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Engineered to protect critical rotary equipment and prevent severe media flow reversal, this large-diameter 14-Inch (DN350) Class 900 Swing Check Valve is manufactured from premium ASTM A351 CF8 Stainless Steel. Featuring a heavy-wall cast body, a securely bolted cover, and a precision-machined disc, it ensures rapid and reliable closure in high-pressure environments. Strictly conforming to the BS 1868 and API 594 standards, it guarantees absolute pipeline safety for demanding petrochemical, offshore, and power generation networks.

🏭 Engineering Highlights:

  • Design Standard: Fully compliant with BS 1868 and ASME B16.34.
  • Body Material: ASTM A351 CF8 (Corrosion-resistant stainless steel).
  • Safety Function: Automatic backflow prevention with non-slam capabilities.
  • Connection: Raised Face (RF) or Ring Type Joint (RTJ) Flanged ends to ASME B16.5.
Category: Tags: , , , ,
Valve Type Swing Check Valve (Flanged Ends)
Design Standard BS 1868 / API 594 / ASME B16.34
Body Material ASTM A351 CF8 (Stainless Steel 304)
Seat / Trim Integral CF8 or Stellite #6 Surfaced (API Trim 10 / 12)

Main Dimensions (Class 900 High-Pressure Series)

Size (Inch) DN (mm) L (RF Face to Face/mm) L (RTJ Face to Face/mm) Flange OD (D/mm)
6″ 150 610 613 381
8″ 200 737 740 470
10″ 250 838 841 546
12″ 300 965 968 610
14″ 350 1029 1038 641
16″ 400 1130 1140 705

🌐 Global Standards & Heavy-Wall Casting

Designed for high-pressure isolation, our check valve division manufactures strictly according to BS 1868, API 594, and ASME B16.34 specifications. We ensure 100% radiographic testing (RT) capability on critical casting areas. Customizations include alternative alloys (CF8M, Duplex, Alloy 20), specialized seal rings, and NACE MR0175 compliant trims for highly corrosive fluid control.

🛡️ Anti-Slam & Custom Engineering Options

For large-diameter pipelines handling high-velocity or high-pressure media (like Class 900 applications), sudden flow reversal can cause destructive water hammer. BSO Ballseal provides advanced engineering solutions to protect your critical piping systems:

  • Lever & Counterweight: Configurable external lever mechanisms to control disc closing speed and assist in positive shut-off.
  • Hydraulic Dashpots / Dampeners: Integrated hydraulic damping systems to achieve 100% non-slam closing characteristics in severe service pumps.
  • By-pass Arrangements: Optional by-pass valves to equalize pressure across the massive 14-inch disc prior to pipeline startup.
Design Feature

Bolted Bonnet, Swing Type
End Connection

Flanged
Material

CF8
Pressure Class

Class 900

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