NIBCO® Ductile Iron Swing Check Valve, Class 150, Flanged, F-938-31 - Image 1

NIBCO® Ductile Iron Swing Check Valve, Class 150, Flanged, F-938-31

NIBCO® Cast Iron Swing Check Valve, Flanged, F-918-B
NIBCO® Cast Iron Sliding Disc Check Valve, Wafer, Lead-Free, W-910-B-LF
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$2,364.80

Key Features:

  • 250 psi/17.2 bar non-shock cold working pressure
  • 150 psi/10.3 bar saturated steam to 366°F/185°C
  • Class 150 raised face flanged end connections
  • Bolted bonnet for maintenance accessibility
  • Iron body, bronze mounted (IBBM) trim
  • Renewable cast bronze seat and disc
  • Ductile iron body — higher physical properties than grey cast iron
  • Horizontal or vertical (upward flow) installation
  • Conforms to MSS SP-136
  • Suitable for steam, water, oil, and gas service
SKU: N/A

Description

Description:

  • The NIBCO® Ductile Iron Swing Check Valve, Class 150, Flanged, F-938-31 is designed with a renewable seat and disc to deliver long-term serviceability and reliable backflow prevention. The valve automatically closes when fluid reverses direction, protecting systems from unwanted flow reversal. Constructed from ductile iron, this valve offers higher physical properties than standard grey cast iron, providing greater strength and impact resistance for demanding commercial and industrial environments.
  • With Class 150 raised face flanged end connections and a bolted bonnet for easy maintenance access, this check valve is well-suited for steam, water, oil, and gas services. It can be installed in horizontal lines or in vertical applications with upward flow. For proper engineering and installation guidance, refer to NIBCO® technical data sheets, chemical resistance guides, and catalogs. NIBCO® check valves are backed by the NIBCO® 5-year 125% limited warranty.

 

Application:

  • For outlets of 2 in – 12 in. F-938-31.

 

Key Features:

  • 250 psi/17.2 bar non-shock cold working pressure
  • 150 psi/10.3 bar saturated steam to 366°F/185°C
  • Class 150 raised face flanged end connections
  • Bolted bonnet for maintenance accessibility
  • Iron body, bronze mounted (IBBM) trim
  • Renewable cast bronze seat and disc
  • Ductile iron body — higher physical properties than grey cast iron
  • Horizontal or vertical (upward flow) installation
  • Conforms to MSS SP-136
  • Suitable for steam, water, oil, and gas service

 

Working Pressure:

  • Up to 300 PSI

 

More Information:

  • Country of Origin: USA
  • Made in USA: Yes
  • Material: Ductile Iron body; Bronze disc; Brass seat
  • Unit of Measure: Each
  • Turns Operations: Non-Manual
  • Type of Check Valve: Swing
  • Valve End Connection Type: F – Flanged (Class 150, Raised Face)
  • Valve Bonnet Design: Bolted Bonnet
  • Valve Pressure Rating CWP: 250 PSI/17.2 Bar CWP
  • Valve Pressure Rating SWP: 150 PSI/10.3 Bar SWP
  • Figure Number: F-938-31
  • Nominal Pipe Size: 2 in – 12 in
  • Applications: Commercial Plumbing, Steam, Industrial, HVAC
  • Prop65 Warning: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Additional information

Weight N/A