Dunham Rubber & Belting Corporation
Dunham Rubber & Belting Corporation
682 Commerce Parkway West Drive, Greenwood, IN 46143
Toll Free: 800.876.5340
Tel: 317.888.3002
Fax: 317.888.2335
Email: mail@dunhamrubber.com
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When liquid flows through the valve, the ball is forced into the branch of the valve allowing full fluid flow. When the liquid stops, equalizing the pressure, the ball drops back into the seat, preventing backflow. Should reverse flow occur, the differential pressure will cause the ball to seal firmly against the seat preventing leakage.

Features:
  • Maximum operating pressure: 250 PSI
  • Maximum operating temperature: 250ºF
  • Two piece construction for easier alignment during installation
  • Various end configurations available: clamp, weld, I-line, Q-line, bevel seat and John Perry
  • Polished ID and OD to 3A standards
  • All metal contact surfaces of 316L stainless steel construction
  • Air blow check valve can be added (see air blow for sizing)
  • PTFE ball
Y Ball Check Valve
Ball Check Valves-2
Unit of Measure
Items Y Ball Check Valve
B45BY-R150
Y - Ball Check Valves 		Y Ball Check Valve
B45BY-R200
Y - Ball Check Valves 		Y Ball Check Valve
B45BY-R250
Y - Ball Check Valves 		Y Ball Check Valve
B45BY-R300
Y - Ball Check Valves
Size N/A 1-1/2 in N/A 2 in N/A 2-1/2 in N/A 3 in
Dimension A N/A 7.500 in N/A 8.5 in N/A 10.0 in N/A 11.5 in
Dimension B N/A 3.3 in N/A 3.9 in N/A 4.500 in N/A 5.3 in
Dimension C N/A 1.365 in N/A 1.865 in N/A 2.370 in N/A 2.870 in
Dimension D N/A 1.875 in N/A 2.335 in N/A 2.870 in N/A 3.834 in
Dimension E N/A 1.984 in N/A 2.516 in N/A 3.047 in N/A 3.579 in
Dimension F N/A 2.516 in N/A 3.047 in N/A 3.579 in N/A 4.682 in
Vertical Seating Pressure N/A 3.6 psi N/A 2.6 psi N/A 1.6 psi N/A 1.9 psi
Material N/A 316L Stainless Steel