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Series 31H Resilient Seated Butterfly Valve

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Series 31H Resilient Seated Butterfly Valve

Series 31H Lug resilient seated butterfly valves are drilled and tapped to meet ASME Class 125/150 and PN16 flanges. Series 31H Valves will not be automated.


  • Size Range: 2” – 20” (50mm – 500mm)
  • Body Style: Lug
  • Temperature Range: -20°F to 250°F (-29°C to 121°C)
  • Pressure Ratings: Bidirectional Bubble-tight Shutoff: 250 psi (17.2 Bar)
    Dead-End Service Shutoff: 250 psi (17.2 Bar)
    Body (CWP): 250 psi (17.2 Bar)
  • Body Materials: Cast Iron, Ductile Iron
  • Disc Materials: Nylon 11 Coated Ductile Iron, Aluminum Bronze, Stainless Steel
  • Stem Materials: Stainless Steel
  • Seat Materials: Bonded BUNA-N, Bonded EPDM
  • Applications: High Pressure, HVAC, Dead-End service


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