倾斜的光盘检查阀门

Tilting disc check valveaccomplishes full flow opening by having the disc pivot or tilt in the flow media. The opening stroke range in much less than that of the conventional swing check valves, therefore reduces opening and closing time critical to controlling flow reversal and reducing water hammer. The full flow area with lower head-loss ensure tilting disc check valve will operate with the highest efficiency and durability. The tilting disc check valve shall consist of a circular disc with conical rim, hinged about a fixed pivot above its center-line and offset from the plane of the seat, sealing against a body seat clamped between the two sections of the valve body.The body shall be two-piece, consisting of an entrance and a discharge section bolted together at an angle with the pipeline. An O-ring seal in a groove between the body flanges shall be in place to prevent leakage between the flanges when bolted together. The valve shall be complete with ANSI class flanges to mate with adjacent equipment.A body seat shall be clamped in place in a slot between the two body sections. The body seat shall have a conical finish to mate with the disc seat. There shall be an inspection port provided in both the entrance and discharge sections to provide visual access both upstream and downstream of the disc. An indicator shall be provided to show disc position for the full range of travel. Bosses shall be cast in both the entrance and discharge sections to allow for either bottom mounted dashpot or top mounted oil dashpot for controlled opening and closing. Feature Non slamming closureSmooth and noiseless sealingLow head loss, low cost operation.Blow out proof designRugged constructionExtended hinge shaft and counterweights on both sides of the valvePrecision machined titling disc and seat for tight shut-off in reverse flow directionCorrosion resistant inner parts ensure long term service under adverse conditionsAll parts, including the seat, are easily field replaceable, thus minimizing down timeDesigned with off center pivot to avoid the tendency of the disc to slam on the seat and to aid the operation at low pressure differentials Benefit -Variable opening and closing speeds Short disc travel from full open to full close provides the ability to close very rapidly or very slowly to avoid contributing to slamming and surges. -Cushioned closure Action of the fluid on the disc is balanced due to pivot points that allow for cushioned movement of the disc into the seat. -Long body laying length Permits smooth passage of water with minimum turbulence and low potential for cavitation. -Low maintenance The stainless steel stub shafts do not come in contact with fluid and can be lubricated either manually or automatically. -Non-slam characteristics The design of the seat and hydraulic dashpot cushions the closing forces on the disc to allow for smooth operation. This prevents slamming of the disc into the seat. -Low headloss Minimal effort to keep the disc open is achieved through the balanced disc design that provides light weight lifting properties, which translates to minimal flow resistance. -Less risk of reverse flow Rapid closing of the disc decreases the chance of reverse flow to occur. Specification Available in sizes8 inches through60 inchesVarious end configurations availableCastiron body, disc and coverBronze disc and body seat ringsStainless steel hinge pinOther materials available upon requestLarger size available on request Dimension *Dimensions are on request.