®, The Duo-Chek is easily lowered into position between the flange faces; because of its light weight, special handling equipment is unnecessary. Fits standard valve flanges. In sizes 2 inch through 12 inch, one valve fits series 125, series 150 and series 300 flanges, saving inventory at less cost than a conventional 150 series. The machined outside diameter centers the between series 300 Duo-Chek flanges; the slots center it for series 150 flanges.
PAT. PENDING
m mm
If your check valve problem is water hammer, Duo-Chek If it's weight, maintenance, mounting position, is the answer.
The Duo-Chek cost, Duo-Chek is still the right answer. forms all regular check valve duties, yet weighs only ten per cent as much. 3 spring loaded, light weight sealing plates operate in any position—even in vertical lines with downward v. The stainless steel coil spring effects positive sealing action. The quick action of the spring closes the before
flow
or
therefore, no slam, no water hammer, o-Chek valves come in a complete range of end connections and sizes from 2 to 48 inches, for ASA pressure ngs of series 125 through 2500, and for temperatures to 1400°F. They are made in steel, stainless steel, ninum, and bronze. Sealing materials are Buna-N, Teflon, Viton, or metal depending on your service.
ve
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