Model: 72 Bronze, Ductile Iron, Carbon Steel or Stainless Steel SURE CHECK™ Valves Sizes: 2" – 54" (50 – 1350mm) Pressure/Temperature–Non-Shock Model Material 72D Carbon Steel Typical Service • ompact design with short face-to-face dimensions for minimum space requirements. C * eat and/or Spring Materials may limit S temperature. See “How To Order” chart for limitations. • esigned for liquids and gases where flow reversal can cause surge and water hammer. D • lastomer seats provide bubble-tight shutoff. E Features • ual shaft design allows interchangeability of shafts. D • orsion springs close the valve prior to flow reversal. T • orsion springs exert a lifting motion on the discs, enabling the center “heel” to open first. T This prevents excessive wear of the seat in this area, and provides a consistent wear pattern and long sealing capability. • ownstream stop shaft stabilizes the discs at high flow rates and prevents them from striking D each other, which can cause premature wear, stress on the shaft, and chattering. Construction • obust cast body is wafer style, featuring compact face-to-face dimensions. R • esigned to fit within ANSI bolt circles. D • ariety of trim and seat materials are available, including overlay and metal-to-metal. V Installation • an be installed horizontally or vertically. C – Consult factory for downward vertical flow applications. – In horizontal applications, shaft should be in vertical orientation. • ood piping practice recommends installing a distance of 5 to 10 pipe diameters from elbows, G pumps, or others turbulence-creating devices. • ueller Steam Specialty strongly recommends the installation of a strainer ahead of the M pump to ensure protection of both the pump and the valve from foreign particles. Special Coatings or Treatments • or Stainless Steel, pickling and passivation available on request, consult factory F Approvals/Specifications • pplicable ASTM, ANSI, and API standards A Model 72 • M Approved F – Sizes 2” – 14” with Carbon Steel, Bronze, and Stainless Steel Bodies.

Body Disc Shaft/spring Seat Bronze ASTM B62 (85-5-5-5) Bronze ASTM B62 (85-5-5-5) 316 SS Buna-N Carbon Steel ASTM A216 Gr. WCB Carbon Steel ASTM A216 Gr. WCB 316 SS Buna-N Stainless Steel ASTM A351 Gr. Body CF8M Stainless Steel ASTM A351 Gr. Disc CF8M Shaft/spring 316 SS Seat Buna-N Ductile Iron ASTM 536 Ductile Iron ASTM 536 316 SS Buna-N See SURE CHECK™ information section in the Mueller Steam Specialty Engineering binder for alternate materials and How To Order options. Dimensions and Weights DIMENSIONS Apply for Certified Drawings Mueller Steam Specialty product specifications in U.S. customary...