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Tilting Disc
GA Figure 7125T
GA Figure 7125T
Tilting Disc
Size:
3" to 36"
Type:
Check Valve
The GA Industries Tilting Disc Check Valve features a streamlined design and full flow area for lower full open head loss than conventional swing check valves.Its energy efficient operation is combined with a short 40-degree disc stroke that provides quick closing valve to minimize hammer. __The valve employs offset seating technology to smoothly lift the disc off of the seat during opening and into the seat during closing without binding or sticking. __The top mounted oil dashpot is mechanically attached to the valve disc.Its self-contained hydraulic system controls the valve's opening and closing speed over its full stroke with an independently adjustable final closing speed engaged during the last 10% of closure.Reverse flow occurs during closure which can reduce pressure surge.The top mounted dashpot is recommended when there is likelihood of extremely rapid flow reversal.
Characteristics
Full port waterway with streamlined flow path __Stable airfoil shaped disc __Lead-free bronze, drip tight seating __Top dashpot with opening speed control and 2-stage closing speed control
Material
Class 125 Body: Cast Iron, ASTM A126 Class B __Class 250 Body: Ductile Iron, ASTM A536 Grade 65-45-12 __Disc (6” to 14”): Lead Free Bronze, C95400 __Disc (16” to 36”): Ductile Iron, ASTM A536 Grade 65-45-12 Ductile Iron __Body Seat Ring: Lead Free Bronze, C95400 __Disc Seat Ring: Lead Free Bronze, C95400 __Pivot Pins: Stainless Steel, Type 303 __Pivot Bushings: Lead Free Bronze, C95400 __External Fasteners: A307 Steel, Zinc Plated
Corrosion Protection
Standard: Internal/external coated with NSF-61 certified 2-part epoxy, minimum 6 mil DFT