The valves are supplied with raisedface, ring type joint flanges or weld ends. Check valve swing check valve swing check valve with. Pdf this paper provides information on swing check valve selection criteria suitable for nuclear power plant applications. Swing check valves are the most common type of valve in water and wastewater pumping systems. Another type is the center guided lift silent check valve. The seat opening crosssection may be perpendicular to the centerline between the two ports or at an angle.
Valve design testing manufacturing international standard download free. Dl wafer lug body double disc check valve hs horizontal swing check valve df wafer double flange body double disc check valve sp short pattern wafer check valve cw wafer center guided silent check valve lp long pattern wafer check valve lug and double flange body check valves. Rigid and sturdy design with minimum loss of head across the valve. While they may hold pressure in the reverse direction, they are not intended for use as isolation valves without special provisions e. A ball check valve is a type of check valve in which the movable part is a spherical ball, as illustrated in figure 4. Kitzs low emission service valves offered in hydrocarbon and chemical industries a realistic and timely solution. Home industrial piping parts swing type check valve bsp din259 female 3d cad download file. They are only to be used with media, which the material and the seals are resistant to. Check valves types, construction, applications and. When a reverse flow occurs, the changes in motion as well as gravity help to bring down the disc, effectively closing the valve. Cvs 60006000a swing check valves are a heavily constructed, full waterway flow area, premium design with multiple features and options.
Slab gate valve through conduit gate valve has been designed as per api6d standard, including soft sealing slab gate valve, metal to metal sealing slab gate valve and expanding slab gate valve. Brass c x c sweat swing check valve the home depot. Most common types of check valves are swing, lift piston and ball, butterfly, stop and tiltingdisk. Kfs check valves conform to ansi, api, and nace specification conformance to meet your application requirements. Combine maximum safety, high flow efficiency and long service life emersons specialty check valves range includes models with a compact wafer style design and round unobstructed port able to tackle many tough applications and swing type wafer check valves. Often called flapper style check valves, swing check valves are a more traditional variety. Ball check valves are used in spray devices, dispenser spigots, manual and other pumps, and refillable dispensing syringes. Avfi specialise in a wide range of check valves non return valves include tilting disc, swing type with lever and counter weight arms, wafer check, duo check, single flap check, flex check valves and ball check valves. One iteration of the swing check valve is a spring check valve. The swing check valve functions by allowing flow forces to move the closure element, it is a. Swing check valves can also be equipped with oil dashpots to provide effective means of slam prevention. Check valve swing type check valve swing type check valve. The nibco cast iron check valve features flanged end connections for easy installation. There are two types of swing check valves available.
The sharkbite check valve can be installed horizontally or vertically and prevents the reverse flow of water through the water supply line. End provides pressuretemperature ratings of different types. The principal types of check valves used are the teepattern lift check, the swing check, the tiltingdisc check, the wyepattern lift check, and the ball check. Swing check valve description swing check valves, like all check valves, are used to prevent back flow in the line. Types of check valves different check valves types of nrv. Swing check valves have a low pressure drop and are best suited for moderate velocity applications. Swinger swing check valve series 712 download free bim. Swing type check valve din standard flanged ends 3d. Duochek valves 5 installs between mating flanges with 10 to 20% the weight of flanged swing checks in popular sizes saves money in initial valve cost and provides lower installation cost. Swing type integral seat applicable standards steel valves ansi b16. Browse f918b check valve cast iron, swing, flanged in the nibco catalog including material number,upc code, valve size,connection type,description,turnsoperation. The weight of the disc and the return flow has an impact on the shutoff characteristics of the valve. External control devices such as damping, locking, and manual override are.
Download valve catalogue, pdf drawing, ga drawing, cross sectional arrangement design drawing, 3d model drawing, valve strainer filter sight glass flow indicator operation and maintenance manual download from here free. These valves produce the lowest pressure drop, when compared with other check valves of the same size, the internal contours and shapes allow them to fully open at low fluid velocities and create a smooth flow path through the valve. One of the most significant characteristics of this type of valves. A swing check valve or tilting disc check valve is a check valve in which the disc, the movable part to block the flow, swings on a hinge or trunnion, either onto the seat to block reverse flow or off the seat to allow forward flow.
Check valves types, construction, applications and advantages. Bolted cover check valves swing type nonreturn bs1868 api6d asme b16. In such a design, a wedge slides cross a general passageway in order to control fluid flow like a sliding gate hence, the name. The pressure of the fluid passing through a system opens the valve, while any reversal of flow will close the valve. Swing checks may be installed in horizontal positions or vertical with flow moving up. Check valves are designed to pass flow in one direction with minimum resistance and to prevent reverse or back flow with minimal leakage. Valve catalogue ball valve,gate valve,check valve,butterfly. Usually used in water pipework systems and installed immediately after the pump. Kirloskar swing check type multidoor reflux non return valves applications salient constructional features combination of excellent design features of reputed overseas valve brands. A swing check valve is an economic type of check valve, but.
The disc swings off the seat to allow forward flow and when the flow is stopped, the disc swings back onto the seat to block reverse flow. Print this page bookmark this email us pdf download. The disc of a swing check valve is secured to the body of the valve by a trunnion and hinge arm, without the aid of a spring. Swing check valve is a nonreturn valve which operates by the swinging action of the disk. From the most common application to the most severe, velan has a solution. Exact operation will vary depending on the type of check valve mechanism. Swing check valves are compact and rugged swingtype units that allow water flow in one direction. Operating instructions a2600 series awwa swing check. The sharkbite check valve is a general purpose, the sharkbite check valve is a general purpose, spring loaded check valve that can be installed in seconds on copper cts cpvc and pex. F918b check valve cast iron, swing, flanged on nibco.
When to use a swing check vs wafer check valve cis blog. Valves common types check non return valves check valves or non return valves are designed to ensure one way flow only. Anti hammer discharge automatic valves qrs datasheet. The single disc check valve wafer type disc check valve. A swing valve is a butterflystyle check valve in which the disc, the movable part to block the flow, swings on a hinge or trunnion, either onto the seat to block reverse flow or off the seat to allow forward flow. Click text area to view or download right click catalog data. Correct sizing of swing check valves is important, with either too low or too high a velocity potentially damaging valve internals and shortening valve life. Cast steel, swing type disc, renewable body seat ring, bolted bodytocover connection. The valve ends are available to meet any pipeline requirement. In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to know and speak the laws that govern them.
The ring is part of the trim of the valve, and is supplied as weldedin as a standard. Model 78 is a unique flapper style swing check that permits flow in one direction only and is tight seated when the outlet pressure exceeds the inlet pressure. Pdf check valves are automatic valves that open with forward flow and close against reverse flow. Kennedy swing check valves or non return valves are for use where. Ask us how to spec the right check valve, or get catalogs, chemical resistance guides and submittals.
They are the conventional swing check valves with flanged ends and the wafer type spring loaded check valves 1. They are the conventional swing check valves with flanged ends and the wafer type spring loaded check valves. Many series are available to provide check valves for practically every service application. They are used in order to prevent from backflow the pumps, fans etc. Swing type check valve bsp din259 female 3d cad download. Although these are ideal for some applications, swing check valves are being steadily phased out due to common recurring problems, such as turbulent flow. Because of their fast closure, these check valves rarely slam and hence have earned the name silent. Swing check valves feature a simple design complete with a disc attached to a hinge at the top. Check valves shall be of swing check flapper type and meet materials requirements of awwa c508. Leverandweight or leverandspring type check valves sizes 14 through 36 using. The newest type of swing check valve listed in awwa c508 and the. A swing check valve is mounted with a disc that swings on a hinge or shaft. Pdf comparing dual plate and swing check valves and the.
Material number nhe300h, f918b check valve cast iron. The model r check valve is a field proven valve which provides reliability and interchangeability. In any situation where backflow could cause problems, swing check valves are the goto. Swing check valve a basic swing check valve consists of a valve. 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. While they may hold pressure in the reverse direction, they are not intended for use as isolation valves. These images should therefore not be used for determining valve clearances. When a check valve is needed to prevent backflow, nibco has a complete lineup, including the nibco ring check with selfclosing disc, horizontal swing, sliding disc, silent check and y pattern. When it comes to check valves, swing checks and wafer checks are actually similar in many ways. Both serve to block back flow from occurring in a pipe line. Dimensions on sales drawings should be used for that purpose refer to the valmatic engineering catalog. Neway supplies a complete range of swing check valves with both internal and external hinge pin types. Both use a swinging disc to block and allow flow in one direction.
It is equipped with a bolted bonnet for maintenance accessibility. Apco cvs 60006000a swing check valves apco cvs swing check valves are recommended for clean and dirty services such as water, sewage or industrial applications. L height dimension is from centreline of valve bore to top of cover. Home industrial piping parts swing type check valve din standard flanged ends 3d cad download file. Series 7 swinger swing check valves are only available in a 2 50 mm size and can be used with high pressure lines up to psi6900 kpa. The single disc check valve wafer type disc check valve consists of four main components.
The valve has a simple but reliable and robust construction. Ball check valves may sometimes use a freefloating or springloaded ball. The images are not to scale but are drawn to represent the proportions of a valve in the middle of the size range. Pdf swing check valve design criteria and cfd validation. Swing check design is one of the most common and best check valve for generalpurpose use. A swing check valve is an economic type of check valve, but it has a high slamming effect. A wide range of body and trim materials to meet various operating conditions. In case the outer diameter 1 5 swing check valves bs 1868 check. Api 594 cast steel swing check valve quick sheet qs velan. Wheatley swing check valve prevents backflow in a fraction of a second. The principal types of check valves used are the teepattern lift check, the swing check, the tiltingdisc check, the wyepattern lift check, and the ball check, illustrated in figs. These in line check valves have springloaded discs which move along the pipe axis over a short distance to close automatically in a fraction of a second. Swinger swing check valves are supplied with bonnet cap drilled and tapped with 12 npt pipe plug for chemical injection or other auxiliary connections. Comparing dual plate and swing check valves and the importance of minimum flow for dual plate check valves.
One of the most comprehensive valve product lines available from any manufacturer. Types of check valves different check valves types of. Valve design testing manufacturing international standard download. This is probably the most common check valve in use today and is a fullport design, meaning the disc, when fully open, is out of the flow stream. Unlike a nonslam check valve, which opens and closes at rates comparable to the pressure of the fluid flow, a swing check. Swing type check valve bsp din259 female 3d cad download file.
1454 193 397 1208 151 269 1413 1223 300 12 938 1121 1357 1295 197 1499 113 328 1143 938 574 62 1510 551 1139 42 132 272 458 1 352 1231 460 176 308 429 1047 662 55