Duochek high performance nonslam check valves are the original mission wafer check valves introduced to the market in. Wafer check valve 1 this users guide contains very important information for the proper installation, maintenance and safe use of the asahi av product store in an easily accessible location. This manual will provide the owner of a wafer or globe style silent check valve the information to operate and maintain the valve to ensure a long and satisfactory operating life. The lightweight compact design fits between mating flanges and meets api 594 facetoface dimensions. They are available in the sizes, pressure classes and configurations you need to meet the most demanding of applications. Dual disc, single disc, silent check, nozzle check, and. Carbon steel, stainless steel, alloy steel, duplex stainless steel end connection. Our application engineers can assist you in making the right choice of valve for your application. Duochek high performance nonslam check valves crane. Wafer flanged body double disc check valve sizes 8 48 asme body classes 150 900 bronze, nickel aluminum bronze, carbon steel, and 316 stainless steel style cw wafer silent check valve. It is a shutoff valve, a nonslam check valve, a balancing valve, a flow metering valve, and now it is field. Dual disc, single disc, silent check, nozzle check, and other industrial wafer check valves. Check valve and control valve manufacturer dft valves.
Its design meets api 594 which is approximately one fourth the. Intervalve check valve models ivc and ivct are primarily single plate swing check valve with a short pattern wafer body conforming to the api6d and asme b16. Full port wafer check valves offer some impressive advantages over other types of check valves. Keystone swing type wafer check valve figure 86 dimensions mm size dn a b pn10pn16 b1 b2 c d e q mass kg note dimension b is the outside diameter for iso pn 10pn 16 flange drilling. Component body stop pin hinge pin seat pin retainer gasket material cast iron astm a126 class b stainless steel aisi 416 stainless steel aisi 416 epdm.
The spring loaded valve begins to close as flow is reduced and fully closes at zero velocity stopping reverse flow, thus helping to reduce water hammer shock. The highly reliable butterfly valve has successfully completed over 10,000. Mistakes in installation can manifest in valve leakage or failure, compromising the integrity of the entire piping system. Mss sp125 third party certified nsfansi 3722016 1400 210 note 1. Construction the keckley wafer double disc check valves are constructed from rugged castings that are machined to exacting specifications. Wafer type gate and check valves, class 150 ypattern globe and check valves, and several patterns of butterfly valves were added to the types. Wafer flanged body double disc check valve sizes 8 48 asme body classes 150 900 bronze, nickel aluminum bronze, carbon steel, and 316 stainless steel style cw wafer silent check valve sizes 2 12 asme body classes 125 300 cast iron, carbon steel, and 316 stainless steel style cg globe silent check valve. Smooth disc surface improves flow efficiency and provide better sealing. A traditional wafer check valve cannot be close coupled. The series 7800 check valve assembly is lighter and faster to install, and costs less than flanged and wafer valve assemblies.
Other retainerless dualplate check valve designs have. Pdf comparing dual plate and swing check valves and the. The wafer check valve is most suited for water and sea water lines. The butterfly valve can be operated with the check valve in an open or closed position with no interference in 2 thru 6 sizes. The dual discs are designed to provide maximum strength with minimum opening time. Wcv series wafer check product guide hayward flow control.
Hydrodynamic design ensures non slamming and water hammerless. This nonslam springassisted, centerguided, lugged pattern wafer check valve is designed to prevent water hammer and reverse flow. Model 1562 wcb body 316 disc viton seat davis valve. Specifyingkf check valves guarantees you a valve optimally designed for your application. Sanitary standards the checkall style 3s check valve is compliant with 3a sanitary. Pdf check valves are automatic valves that open with forward flow and close against reverse flow. Stockhams wafer check valve, made from corrosive resistant cast iron, provides positive shut off and minimizes. Valves shall be flanged, spigot, male threaded, grooved end or wafer style. Wafer swing check valves for connection between flanges pn. We use cookies to give you the best experience on our website.
The valve is available in the sizes, pressure classes and configurations required to meet the most demanding of applications. Be careful that the maximum working pressure is not exceeded during use. Wafer double disc check valve applications liquid or gas where protection from flow reversal in a pipeline is required. Types of check valves different check valves types of.
In order to download a dwg file or pdf file to your hard drive, right click on the link and save target as. Butterfly check valves sample engineering specification all thermoplastic check valves shall be butterfly design constructed from pvc type i, astm d 1784 cell classification 12454 or cpvc type iv, astm d 1784 cell classification 23447. Consult our engineering department for pressure drop information on steam. The wafer check valve provides closure by two semicircular doors, both hinged to a central post in a ringshaped body that is installed between flanges. 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. However, check valves cant function at their best if they arent installed properly. Kf check valves are not intended for pulsating, reciprocating service except for the series 50 piston check valve. Be sure to conduct a safety check on the machine tools.
The duochek wafer valve design is generally stronger, lighter, smaller, more efficient and. Check valves wafer style australian pipeline valve. The compact wafer style body is a one piece, retainerless model which eliminates potential leak paths. The duochek wafer valve design is generally stronger, lighter, smaller, more efficient and less expensive than conventional swing check valves. Check valves play a critical role in preventing backflow and protecting sensitive equipment, pipes, pumps, and compressors. Figure 810 internal spring specifications, asme 125 and 150 rated general the check valve shall be a wafer style flangeless. Wafer check valves are becoming the preferred type of check valve for most applications, due to their compact design and relatively low cost. The tlw check valve tapped lug wafer was engineered for applications where exposed studs are not suitable.
Some of the most common areas of application are hot water plants, plants for water and waste water treatment, boilers and supply systems, energy pipe systems and process equipment for the chemical and petrochemical industries. Wafer check valve 6 7 installation procedure in suspending and supporting a valve, take enough care and do not stand under a suspended valve. The new patentpending wcv series full pattern wafer check valve. Spirax sarco check valves are compact, minimal maintenance solutions to prevent reverse flow in steam system pipelines. Stainless steel spring allows disc to close prior to reverse flow and is hidden in the diffuser under protection while valve in operation. The silent type check valve is built with stainless trim to give years of trouble free operation. Champion valves is dedicated to meeting your needs with a complete range of highquality and competitively priced check valves. In these valves, a clapper hangs from a hinge, a clapper shaft, or a pin mounted to the underside of the bonnet. Leakfree, tight sealing, protection against reverse flow and minimal flow direction changes are at the core of flowserve check valve designs.
Dimension b2 is the outside diameter for asme 150 flange drilling. Operation manual for kitz wafer type check valves 125 fwnb we appreciate your purchasing our products. Wafer type check valve rsk standard plasticmetal version. The overall installation length is much shorter than a traditional. Valves shall incorporate a single disc design suitable for either horizontal or vertical installations. Retainerless wafer double door check valves the dual plate check valve features exceptional flow characteristics. 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. 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. That means when you order checkall valve products you are assured of receiving the highest quality check valves. Duochek high performance nonslam check valves are the original mission wafer check valves introduced to the market in the late 50s. Our primary focus is check valves and our roots are grounded in low pressure drop designs. Waferstyle dualdisc check valves are the valve of choice for low pressure loss applications.
Kf check valves 3 wafer style check valves series 10 flangeless swing style long pattern check valves with internal spring assist. The silent type check valve can be installed in either. Click here to download this entire section, or select specific data sheets in the list above. Also keep this manual in a place accessible to the operator. Ask us how to spec the right check valve, or get catalogs, chemical resistance guides and submittals.
Stainless steel disc and spring for excellent corrosion resistance. The overall installation length is much shorter than a traditional combination of a wafer style check valve, butterfly valve, and spool piece. The basiccheck valve was developed to satisfy that need. Neway dual plate check valves are in compliance with api 594. Valve search model or description commercial valves.
The wafer swing check valves have compact dimensions and reduced weight. The wafer swing check valves are easy to be installed, because the valve opens in case of any minimum pressure increase. 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. With reverse flow eliminated, the forces necessary to produce water hammer on both the upstream and downstream sides of the valves are. Stopperintegrated structure eliminates the use of gasket during piping, allowing cost reduction. Operation manual for kitz wafer type check valves 125 fwnb. The wafer check valve is installed between regular pipe flanges.
The dual plate wafer check valve lug type covers the bolt along the entire length of the body. Checkall products are designed, manufactured and distributed in accordance with iso 9001 requirements. A swing check valve is an economic type of check valve, but it has a high slamming effect. Over the following decades, other customers needs led. Check valves, also known as nonreturn or oneway valves, are designed to enable fluid to flow one way in a pipeline. Davis valve offers a wide range of double door wafer checks in cast iron, cast steel, stainless steel as well and steel and stainless alloys. Product description, dimensions and specifications pdf. The compact valve body design allows a flow area exceeding the pipe area to minimize flow losses and. With reverse flow eliminated, the forces necessary to produce water hammer on both the upstream and downstream sides of the valves are substantially eliminated. All wafer check valves shall be of solid thermoplastic construction, having no metal that. The versatile valve is offered in a variety of elastomerdisc combinations to address myriad process requirements. Read all the contents of this manual before piping and using the m. The basic design of a check valve inhibits backflow in a line.
Valtorcs 240 wafer check valves are designed to provide long service life if the velocity is kept within the flow rate shown in the table in attached pdf spec sheet and if a minimum of five pipe diameters of straight pipe in front of the valve is maintained downstream from a likely cause of turbulence i. Iron silent check valve 125 class wafer style stainless steel trim conforms to. Aquaseal 16 integrallymoulded butterfly valve pn 16 aquaseal 16 integrallymoulded butterfly valve sets a new benchmark in performance for butterfly valves. Wear protective gloves and safety goggles as fluid remains in the valve. Aquaseal chek dualplate check valve aquaseal 16 integrallymoulded butterfly valve pn 16 body style pressure rating. Wafer check valve 3 3 general instructions for transportation, unpacking and storage in suspending and supporting a valve, take enough care and do not stand under a suspended valve. However, being smaller makes it lighter and, therefore, is more cost efficient to purchase, install and maintain. We carry sizes ranging from 1 12 to 36 and pressure classes. To avoid premature wear in dura wafer check valves, please install check. Reference individual technical data pages for standard disc, shaft, spring, and. Model 90 wafer check valve on united brass works, inc. The taco plus two multipurpose valve combines all the valve functions that are normally required on the discharge side of a centrifugal pump in a hydronic heating or cooling system into one body.
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. Unlike most conventional check valves, brayrite wafer combination swing check valves are ideal for both horizontal and vertical pipeline installation requiring only a single line for operation. Duochek high performance nonslam check valves are the original mission manufacturing company wafer check valves introduced to the market in the late 50s. The series 10 check valve is a flangeless bodied wafer style design. Smspressuredropsilentcheck pressure drop chart these charts are based on the flow of clean water at ambient temperature. Lug type valves are supplied in scallop to keep the weight as low as possible, thereby minimizing the cost. Valves shall be wafer style conforming to asmeansi b16. All wafer check valves shall be of solid thermoplastic construction. The valve is not designed to handle any kind of impact. Supercheck check valves wafer style 8 nonslam supercheck is a nonslam check valve. All wafer check valves shall be of solid thermoplastic construction, having no metal that comes in contact with the media. Ritag type sr wafer type lift check valves these models have been installed in plants around the world for decades.
Operationmaintenance manual 720g wafer and table of contents. Browse fire protection products wafer check valves in the united brass works, inc. Arita wafer check valve is designed and manufactured in conpliance to. Dual plate wafer check valve iron and cast steel advantages of design the main purpose of the dual plate wafer check valve is to perform the work of almost any conventional valve. Aquaseal10 integrallymoulded wafertype butterfly valve is available in sizes from. Check valve figure 809 to 815 ar valve uk distributor. The wetted surface of this product contacted by consumable water contains less than one quarter of one percent. The fitting is a wafer check valve the fitting controls the flow of. Browse check valves in the colton industries catalog including silent check valves,twin door check valves.
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