Titan flow controls check valves are the preferred choice for achieving automatic shutoff and preventing backflow in piping systems. A broad range of configurations that includes piston, tilting disc, springloaded disc and dualplate models meets the critical, hightemperaturepressure demands of the worlds major industries. Disc design contoured disc provides minimum headloss and. Tilted disc check valves are available in a wide range of sizes from 3. The disc begins closing the valve as forward flow decreases. Check valves types, construction, applications and advantages. Stronger, lighter and smaller than conventional swing. Closing time is reduced compared to the other check. Minimal forward flow will instantly open the valve disc, while zero flow closes the valve disc preventing backflow. Stop check valve is a combination of a lift check valve and a globe valve. T433y check valve bronze, ptfe disc, threaded ends.
Spring loaded disc to prevent reverse flow in pipe lines. The check disc valve close for the spring action when reduce the line pressure, getting a mild closing and avoiding the fluid recession and the surge when it close to the zero point of pressure. They are especially suited for use in distribution systems and industrial plants. It could be installed in any position, for fluids in horizontal and vertical circulation, ascending or descending. Disc design contoured disc provides minimum headloss and energy savings. Keystone rubber disc check valve figure 87l features double flanged design. Titan is committed to maintaining a large inventory of silent check valves, center guided check valves, double disc check valves, and single disc check valves in a variety of types. The pratt tilting disc check valve is the most versatile and reliable check valve henry pratt company has to offer. The keckley style dd has a cracking pressure equal to or less than 0. Anticipated closing limiting the intensity of the check valve shock. Its design meets api 594 which is approximately one fourth the face to face dimension and 15% to 20% the weight, on most popular sizes, making them less expensive than a swing check valve. Disc opens in the direction of flow and returns back on body seat when flow stops and seals with seat ring against backpressure. Wafer swing or tilting disc check valve can be manufactured with flanges on request.
See the valve arrangement drawing for disc clearance dimensions. If the back flow reaches to check valve before the disc closed, the result will be slammed closing and water hammer. But here is where the similarities to traditional swing check valves end. The most common check valve is the disc type horizontal or vertical. Tilting disc check valves with hydraulic damper eliminate the closing slams and water hammer for entire closing stroke. Thanks to their energy saving design, they are believed to be the highest performing, but cost effective check valve on the market today.
Series 586ct pivoting disc check valve with top mounted control the claval series 586 pivoting disc check valve provides superior flow characteristics with lower head loss than any other comparable hinged disc check valve. Disc and body seat rings leak tight seating is achieved at all working pressures by utilizing a lift and tilt action which provides. Apco csd slanting disc check valves are available in sizes 272 501800mm with asme 125150 flanged end connections or 248 501200mm with asme 250300 flanges. Nafcheck tilting disc check valves size 224, ansi class 150 and 300, naf 526440 528661 fk 30. Cair valves cair offers disc check valve wafer type especially for chemical, food processing, pharmaceuticals, pulp and paper, textiles, power generation, refrigeration u air conditioning etc. The apco slanting disc check valve, because of its very unique two piece design and slant disc position, has superior flow characteristics lowest head loss when compared to any hinged disc type check valve available. The main body is made of two pieces to allow a greatly enlarged flow area through the disc. Disk type check valve eclipse series disc type check valves are designed to prevent reverse flow of gas or air, however, they are not designed for tight shutoff. For springassisted discs, spring material shall be 316 stainless steel as. The nafcheck valve is available in ansi and api standards in carbon steel and stainless steel. The tilted disc allows a flow area that is 40% greater than the nominal.
Dual disc check valves the dual disc check valve with its compact wafer design and low cost have made it a popular choice when space and price are major factors in valve selection. Find more detail about industrial valves from,download cast and forged steel ball valve,gate valve,check valve,globe valve pdf catalog,contact us quickly. This valve offers significant energy and cost savings over the life of the valve due to its. A lift check valve is a check valve in which the disc, sometimes called a lift, can be lifted up off its seat by higher pressure of inlet or upstream fluid to allow flow to the outlet or downstream side. Bolted bonnet horizontal swing renewable seat and disc 200 psi. The pratt tilting disc check valve offers significant energy savings compared to other types of conventional check valves because of its larger flow area and low head loss characteristics. Tilted disc check valve body design ultra low headloss is the result of streamlined body contouring and 140% flow area through the seat. The swing check valves are automatically held in a central position by the.
It is also available in bs, din and ss standards see catalogue sheet fk 30. Valve catalogue ball valve,gate valve,check valve,butterfly. The spring return reduces noise for quiet operation. The surgebuster check valve is a swing check valve that fully meets ansiawwa c508. The valves are used in oil lines processing line, hot and cold water systems, steam and condensa gas lines etc. Mueller canada offers several types of check valves including. The twin disc check valve is wafer style to fit between. Check valve shall be of the flexible disc, full body check valve type with no internal moving parts except the closure disc. Check valves should be placed at a distance equal to 5 to 10 pipe. Our two piece body design allows for a 40% expanded cross sectional flow area, so the area.
Series 586ct pivoting disc check valve with top mounted control the claval series 586 pivoting disc check valve provides superior flow characteristics with lower head loss than any other comparable. The flap is totally encapsulated in nbr rubber for superior sealing and corrosion resistance. Use the diagram 1 for vertical pipe and diagram 2 for horizontal pipe. A broad range of configurations that includes piston, tilting. The valve body shall be constructed of ductile iron astm. The dynamic opening force on the disc depends on the density of the medium and the.
Its design meets api 594 which is approximately one fourth the. Check valves are flow sensitive and rely on the line fluid to open and close. Valve shall contain tilteddisc design to achieve better seating characteristics. The duochek wafer valve design is generally stronger, lighter, smaller, more efficient and less expensive than conventional swing check valves. Buttweld 50 750 mm 923 tilting disc check 900 flanged 3 18 29. Slanted seat check valves are so designed that the seating plane makes an angle with the vertical plane to reduce the swing angle and closing time. The valve achieves full opening when the disc tilts in the flow of the media. Wafer double disc check valve style dd, dl, and df pressure drop chart this pressure drop chart is based on the flow of clean water through the keckley double disc check valve.
Disc check valves are designed to be sandwiched between flanges i. Closing speed is adjustable depends on working conditions. Tilted disc check valves check valve mga controls ltd. Check valve comparisons slanting disc check pivot off center slanting disc check is a unique valve fig. Usually used in water pipework systems and installed immediately after the pump. Minimal forward flow will instantly open the valve disc, while zero flow closes. Better closing characteristics due to the smaller swing angle of the disc. Hydraulically profiled disc optimising the passing of the flow. A basic check valve consists of a valve body, bonnet or cover, and a disc which is attached to a hinge and swings away from the valve seat to allow fluid to flow in the forward direction, as in a swing or tilting disc check valve, and returns to valve seat when upstream flow is stopped.
Buttweld 50 300 mm 323 tilting disc check 300 flanged 2 36 27 323. The nibco leadfree cast iron wafer style check valve is spring actuated with bunan seat. Aws swing check valves require a low opening pressure. The twin disc check valve is wafer style to fit between standard flanges. Valve is ruggedly constructed with aluminumbronze or stainless steel trim to give years of trouble free operation. The tilting disc check valve shall consist of a circular disc with conical rim, hinged about a fixed pivot above its center.
The internal disc allows flow to pass forward, which opens the valve. It can either be used as a check valve or as an isolation stop valve like a globe valve. Browse t433y check valve bronze, ptfe disc, threaded ends in the nibco catalog including material number,upc code,valve size,connection type,description,turnsoperation. Apco slanting disc check valves frank olsen company. Check valves types, construction, applications and. Its streamlined body contouring, flow area 40% greater than nominal pipe size and hydrodynamic disc combine to provide the lowest headloss of any check valve produced today. For additional types of check valves, please visit. The check valve shall be of the tilting disc type as manufactured by henry pratt company. Titan is committed to maintaining a large inventory of silent. A guide keeps motion of the disc on a vertical line, so the valve can later reseat properly.
Class, ff flange, cast iron body, 304 ss disc, bunan seats, 316 ss spring. Short disc travel from full open to full close provides the ability to close very rapidly. The twopiece body design allows for a 40% expanded cross sectional flow area, compensating for the disc mass. The compact design features nonslam springassisted closing. They are ideally suited for clean municipalindustrial water and other industrial liquid applications. Using the same valve body as the type n and with inner and outer disc diameters being the same in the two valves, the type nz provides the same internal flow profile. The dd plus is a versitile double disc swing check valves use spring assisted halfdiscs for up to 66 sizes. A basic check valve consists of a valve body, bonnet or cover, and a disc which is attached to a hinge and swings away from the valve seat to allow fluid to flow in the forward direction, as in a. Scv full port swing check valves are all designed to operate without any assistance, reacting to dominate flow direction. Superior flow characteristics the apco slanting disc check valve, because of. Disc check valve is an advanced design which gives full flow and occupy very less space than other type of non return valve. Mueller 212 swing type gravity operated check valve flxfl maximum working pressure. Check valves or non return valves are designed to ensure one way flow only. The tilted disc check valve is an excellent choice for raw water, cooling water and treated waterwastewater applications.
Because of the disc travel, swing check valves are generally not used for systems in which water hammer is likely to occur. Buttweld 50 900 mm 623 tilting disc check 600 flanged 2 30 28 623. Nibco may substitute ductile iron astm a395 604018 or astm a536 654512 for all other astm a126 class b cast iron components. They are suitable for use on a wide range of fluids for applications in process.
Type n radially guided ring disc with the type nz the ring disc is centrally guided with a single spring. All iron components are coated in fusion bond epoxy resin. The tilting disc check valve shall consist of a circular disc with conical rim, hinged about a fixed pivot above its centerline and offset from the plane of the seat, sealing against a body seat clamped between the two sections of the valve body. The flap rises above the flowpath reducing wear and allows for a flushing action during operation. The dual disc check valve with its compact wafer design and low cost have made it a popular choice when space and price are major factors in valve selection. For springassisted discs, spring material shall be 316 stainless steel as standard, or hastelloy as required. The tilting disc design through lifting and stabilizing in the fullopen. This valve offers significant energy and cost savings over the life of the valve due to its large flow area and low head loss characteristics. Tilting disc check valve operation and maintenance manual. T433y check valve bronze, ptfe disc, threaded ends on nibco.
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