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Oil-Controlled Closure Swing Check Valve


The GA Figure 25-DXH Oil-Controlled Closure Swing Check Valve is a free opening check valve with two-stage closure to minimize slam and surge on high head water and sewage pumping applications.  The valve is designed to freely and smoothly open on pump start-up and provide full waterway for minimum head loss.  Following pump shutdown, the valve closes rapidly during the first stage then engages the hydraulic system to provide a controlled final closing speed to prevent slam and mitigate surge.

Meets American Iron and Steel requirements.

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General information

Product features and benefits

  • Non-slam operation with pump shut down surge control
  • Rugged lead-free construction
  • Side-mounted external hydraulic system controls final closing speed
  • Zero leakage replaceable resilient seat
  • Horizontal or vertical installation
  • 2” to 24” Class 125 flanged


  • Body, Disc:  Cast Iron, ASTM A126 Class B
  • Cover:  Steel, ASTM A36
  • Body Seat:  316 Stainless Steel
  • Disc Arm:  Ductile Iron, ASTM A536 Grade 65-45-12 (2-4”) or Steel, ASTM A36 (8-24”)
  • Seat Ring:  Thiokol
  • Shaft:  Stainless Steel
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9025 Marshall Road
Cranberry Township, PA 16066
United States
+1 724-776-1020 +1 724-776-1254 Write e-mail