Flanged check valves class 150 valtorc international usa. Metaltometal seats are the same material as the valve body unless otherwise specified. Check valve showing working parts and water flow direction. Check valve series 25314 smithcooper international toll free 800 7660076 fax 323 8904456. If there is not enough flow, disc movement occurs inside the valve, since the disc is always in the flow path. The joint between the seat ring and body is sealed by the flange gasket upon installation preventing any leakage through the. Design features the complete line of check all valves are inline springloaded poppettype check valves. Check valve manufacturer of silent check valves also known as inline check valves, spring check valves vacuum breakers and lowpressure relief valves. Design 283 description and application purpose 284 function 284 dimensions, pressure range 285 list of spare parts 286 dimensions 287 opening pressure, tightness, pressure loss 288 weights 289 operating instructions 290 type code, order example 292. Face to face dimensions dualplate wafer check valves api. The 408 and 4082 features a cleanout port permitting access to the inside of the valve without removal from the pipe line. This results in wear, potential for failure, and a higher pressure drop than calculated. It also mean that it is use to prevent the return flow of the fluids.
Upper and lower valves are identical, except that the upper valve has vacuum breaker built in to allow for rapid evacuation of the float chamber. Easy structures and short dimensions are the remarkable features of. Standard oring soft seat material for the sealing surface is bunan nitrile with other materials including teflon and viton available on request. Series 10 flangeless swing style long pattern check valves with internal spring assist. If this is done, seat damage to the valve or personal injury to the inspector may occur. Kennedy swing check valves or non return valves are for use where backflow is to be prevented.
Often applied on the discharge side of pumps, check valves prevent the system from draining if the pump stops and protect against backflow, which could harm the pump or other equipment. Dimensions are subject to change without notice consult factory for installation information cv values operating temperaturepressure size indn cv values size indn cv values 380 328 6150 1,278 4100 514 8250 2,549 pressure loss calculation formula. All valve seats are integral and can be supplied either with an oring seat or without an oring metaltometal seat. At valves online we provide you with an extensive range of check valves, available in a wide range of sizes, materials and design closing operation. Check valve specification sheet total valve systems. Valves shall incorporate a single disc design suitable for either horizontal or vertical installations. 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. A favorite and proven valve model in the wastewater industry for decades. Inline check valve silent check valve checkall valve. The fullbore design ensures a low pressure drop across the valve and less turbulence than with reducedbore valves or alternative designs of swing check valves. Endtoend dimensions apply to flanged valves where the gasket contact surfaces are not located at the extreme ends of the valve. V33 series ordering information and dimensions material gradeastm ss316 a276, a479 brass 360 b16 ss302a3 nbr nbr ss302a3 materials of construction valve body materials component 1.
The minimum operating pressure is the pressure when the valve begins to open, and not the pressure when the valve is fully open. Facetoface dimensions as listed do not apply to ring joint flanges rfj. Check all valve is an experienced check valve manufacturing company providing a wide variety of valve products. Smithcooper international toll free 800 7660076 fax 323 8904456. The check valve has a construction, in which it is closed by the differential. Oring seal dpro v33 series poppet check valves feature. If the valve must be serviced, it should be isolated and the line pressure relieved on both sides of the valve.
Check all valves are available with metal to metal or soft seats. Cvh check valves guided poppet design and precision ground surfaces for 10,000 psi service, 14 to 2 nptsaebsppbspt6149 the dmic check valve is a quality leader in the worldwide cvh marketplace. Swing check valves ansi swing check valves class 900 dimensions and weights nom size in 2 21. These staff members have to be informed about the manual and the advices. Check valve a check valve is a type of valve which normally allows fluid liquid or gas to flow through it in one direction but not the opposite direction. Series 408 threadednpt swing check valve general purpose swingcheck valve available in stainless steel with threaded end connections. Model 4082 includes body bosses to accommodate additional components. The control valve handbook has been a primary reference since its first printing in 1965. Standard construction of body bonnet connections is. Seat end of valve must be mated to a standard flat faced metal flange.
Check valves are automatic shutoff valves that are commonly used for preventing backflow or drainage in a piping system. Pvc stub check valves effectively prevent backflow in drainage lines. Frequently, pipe sizes and flow rates are such that it is not necessary to provide a full housing dependacheck valve. P pressure drop q flow in gpm cv flow coefficient 3.
Control valves are an increasingly vital component of modern manufacturing around the world. Tag overview the identification tag displays all construction and tracking data regarding the respective valve on which it is attached. Many series are available to provide check valves for practically every service application. Class 300 and 600 valves consist of a circular spiral wound gasket. Ansi swing check valves class 1500 dimensions and weights nom size in 2 2 1.
Whether the valve body is metal or plastic, the term metaltometal is used for seats without orings. Ball valve dimensions class 150, class 800, class 3000 ball valve pressure rating chart 3 way ball valve dimensions threaded ball valve dimensions. Soft seat check valves insure flow in one direction only and can be mounted in any position. Valves shall be wafer style conforming to asmeansi b16. Below is a general overview of the identification tag components. Style h double flange retainerless valve asme class 900. Camerons tom wheatley check valves have been an integral part of the surface and. Depending on the valve service it can be supplied flatface gasket with graphite or ptfe.
The disk swings away from the valveseat to allow flow in the forward direction, and returns to the valveseat when upstream flow is stopped, to prevent backflow. For additional instructions, consult the operation and maintenance section of the crispin valve catalog. Class 900 and above gate valves consist of a ring type joint. Duochek high performance nonslam check valves crane. Swing check valves are armatures valves for return flow prevention in piping systems. Valves have the same dimensions as standard crosses and nipple in the horizontal leg, and allow normal rod cleanout of pipe in both directions. Yoke bodybonnet flange under the handwheel nut trim description. The valve shown in figure 47 is a combined lift check and stop valve.
Check valve specification sheet db series required application details expected media passing through valve list any additional trace chemicals the could be found in the media inlet pressure m of h20, ft of head, psig back pressure m of h20, ft of head, psig minimum media temperature cf maximum media temperature cf. Flex check valves have their highest load when fully open. Sizes range from 18 npt to 20 inch flange connections. High pressure check valves or non return valves are valves that allow fluids to flow in one direction only. Spring is completely removed from fl ow path closed as the inlet supply pressure decreases, a light spring closes the poppet, positioning the knifeedge automatically in line of contact sealing against the oring. Titan flow controls check valves are the preferred choice for achieving automatic shutoff and preventing backflow in piping systems. Dimensions are in millimeters unless otherwise indicated.
Face to face dimensions dualplate wafer check valves api std. Check valves are twoport valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave. As mentioned earlier, unlike onoff valves, check valve internals are flow sensitive. High flow capacity port sizes and disc retraction to minimize flow velocities and maximize valve service life. Checkall valve is an experienced check valve manufacturing company providing a wide variety of valve products. Class, ff flange, cast iron body, 304 ss disc, bunan seats, 316 ss spring. Dimensionsweightsquantities dimensions size a b w910 w960 in. Inline check valve silent check valve checkall valve mfg. Product description, dimensions and specifications pdf. The duochek wafer valve design is generally stronger, lighter, smaller, more efficient and less expensive than conventional swing check valves. Face to face and end to end dimensions conform to bs 2080, ansi b16. Weights and dimensions can be changed without notice. Properly selected and maintained control valves increase efficiency, safety, profitability, and ecology.
The dft model wlc wafer style silent check valve is a lightweight, springassisted, inline check valve that provides reliable, low maintenance service for a wide range of fluids and pressuretemperature combinations. Standard oring soft seat material for the sealing surface is bunan nitrile with other materials including teflon. All wafer check valves shall be of solid thermoplastic construction, having no metal that comes in contact with the media. The valve ends are available to meet any pipeline requirement. D a e 18 outlet inlet 4 mounting holes g dimensional data subplate mounted frame size a b d e g dia. Check valve is a two opening valve where one for fluids to enter and one for fluids to flow out. The facetoface dimension for flanged valves is the distance between the extreme ends which are the gasket contact surfaces. These are highly reliable for both gas and liquid service.
Computer optimized flow passages and super heavy duty construction results in a 10,000 psi rated product which will provide. Ychecks are less affected by turbulent flow and typically have lower shutoff characteristics than ball checks, and also have improved flow characteristics. 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. Skokie, illinois 60076 1800keckley check valve product numbers. The swing check valve functions by allowing flow forces to move the closure element, it is a hinged clapper which swings or rotates around a supporting shaft. Hoerbiger will flow engineer every application and quote pressure drop across the valve. Class 150 gate valves consist of a square joint in 2 and an oval one for all other sizes.
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