They are available in the sizes, pressure classes and configurations you need to meet the most demanding of applications. Tilting disc check valves improved on the swing check by making the disc more responsive. Certificate as per ped 9723ec module h to stamp ce. The chemline wp series wafer check wp series wafer check. Bf series waferlug butterfly valves milliken valve. Resilient, soft seats coupled with precision machined sealing surfaces ensure a bubble tight seal. Duochek high performance nonslam check valves are the original mission manufacturing company wafer check valves introduced to the market in the late 50s. Browse fire protection products wafer check valves in the united brass works, inc. Check valves get your backflow in check 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.
The valve is available in the sizes, pressure classes and configurations required to meet the most demanding of applications. Us valve is a new jersey corporation with headquarters in new jersey and manufacturing locations in marylandusa, europe and asia. Dual disc wafer check valves are the clear choice for. Check valves type b manufactured in accordance with api594 specification.
Wafer valve with 316 stainless steel, wafer connection to ansi 150300 with metal to metal seating. The valves are designed for simple flanged supported. Champion valves is dedicated to meeting your needs with a complete range of highquality and competitively priced check valves. Valves shall be wafer style conforming to asmeansi b16. Some of the most common areas of application are hot water plants, plants. All valves shall be capable of bidirectional, end of line, bubble tight service to rated pressure. Duochek valves duochek high performance nonslam check valves are the original mission wafer check valves introduced to the market in the late 50s. The chemline wp series wafer check wp series wafer check valves. Asahi av valves installation,operation and maintenance manual 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. Dual disc, single disc, silent check, nozzle check, and other industrial wafer check valves. Flanges are usually a plate or ring that forms a rim on a pipe, both internally and externally, and sometimes refers to the raised connecting piece of two pieces of pipe.
The spring adds force for faster, more silent closing. Valves shall incorporate a single disc design suitable for either horizontal or vertical installations. The chemline wp series wafer check valve is a nonreturn valve ideal for limited space installations. Stop check valves are a combination of globe and nonreturn valves specially suited for the top of boilers. Wafer check valve thermoplastic valves, actuators, plastic. Class, ff flange, cast iron body, 304 ss disc, bunan seats, 316 ss spring. Asahi av valves installation,operation and maintenance manual wafer check valve 8 8 disassembling method for replacing parts be sure to conduct a safety check on all hand and.
Keeping pressure loss low is always important, but particularly so when handling low pressure air and gases. A spring loaded aluminum bronze clapper, resilient seat, and oring design are used to ensure a quality seal at the seat. Sanitary standards the checkall style 3s check valve is compliant with 3a sanitary. All wafer check valves shall be of solid thermoplastic construction, having no metal that. The wafer check valve is less bulky than other types of check valves, being as it is made to fit between a set of flanges. Our primary focus is check valves and our roots are grounded in low pressure drop designs. The basic design of a check valve inhibits backflow in a line. The valves are designed for simple flanged supported installation and will operate equally well in any position. It also provides a pressure rating of 150 psi across all sizes where most other plastic wafer check or swing check valves do not. 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. Kfs check valves conform to ansi, api, and nace specification conformance to meet your application requirements. Milliken bf series waferlug butterfly valve, sizes 2 through 48 212 230psi, 1448 150psi general valves shall be of the wafer or lug design for installation. Checkall products are designed, manufactured and distributed in accordance with iso 9001 requirements.
Threaded valves flanged valves sanitary valves wafer valves basiccheck restrictor check scv scvr vacuum breaker dlc excalibur glc glc cast iron pdc dsv alc fbc wlc wlc cast iron ycalibur page 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 size 14 to 212 14 to 212 12 to 312 to 2 1 to 4 od. Special design with a floating ball that reseats quickly when the flow begins to change. Browse check valves in the colton industries catalog including silent check valves,twin door check valves flow control solutions since 1988 call us toll free. 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 nibco leadfree ductile iron, wafer style check valve is spring actuated which reduces noise for quiet operation. Reference individual technical data pages for standard. Wcv series wafer check product guide hayward flow control. In liquids and gases as overflow protection with hollow balls and in conjunction with.
Our product range includes, but is not limited to, sizes. Check valves are used for prevention of back flow on liquid columns in front of pumps with solid balls. Dual disc, single disc, silent check, nozzle check. Low pressure drop high cv our elastomer hinge check valves have larger open area than other designs, thus providing higher capacity and lower pressure drops than swing and lift check, or even traditional dual plate wafer designs. The kennedy wafer check valve is a nsf listed compact design for installation between standard asme b16. The duochek wafer valve design is generally stronger, lighter, smaller, more efficient and less expensive than conventional swing check valves.
Valves shall be flanged, spigot, male threaded, grooved end or wafer style. Compact steel check valves manufactured in accordance with api602 specification. 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. However, being smaller makes it lighter and, therefore, is more cost efficient to purchase, install and maintain. Duochek high performance nonslam check valves crane. 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 with short facetoface dimensions that allow installation between various flange standards. A traditional wafer check valve cannot be close coupled. All wafer check valves shall be of solid thermoplastic construction, having no metal that comes in contact with the media. When the swing check finally closes, it abruptly stops the flow and causes a pressure surge resulting in shock waves. Tilting disc check valves improved on the swing check by. In these valves, a clapper hangs from a hinge, a clapper shaft, or a pin. 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. They are available in two versions with or without disc springs. Supercheck check valves wafer style 8 nonslam supercheck is a nonslam check valve because it operates on fl ow cessation, not fl ow reversal.
Low pressure drop high cv our elastomer hinge check valves have larger open area than. 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. Nibco w910blfw960blf silent wafer check valve leadfree, class 125, iron body, bronze seat and disc, 4 misc. Make sure that only those swing check valves are being installed, that meet the operational requirements regarding pressure category, chemical resi. Asahi av valves installation,operation and maintenance manual wafer check valve 3 3 general instructions for transportation, unpacking and storage in suspending and supporting.
Wafer check dual flap tufskin 32 wafer check single flap long pattern slpsw series 3336 wafer check single flap lined long pattern do series 3738 wafer check superlite model 2024 3940 wafer check non slam axial disc model nsslsc 4142 wafer check threaded inline model rapscv 4344 non slam nozzle check valve 4548. Possible damages to the swing check valves and orings are to be checked prior to installation. The check valve is recommended for automatic fire sprinkler applications where space is a premium. Sandwich these valves between two ansi flanges for backflow prevention at a fraction of the weight of flanged check valves and a reduced pipeline footprint. All 2 8 valves shall be pressure rated at 150 psi, all 10 16 valves at 100 psi for water at 73f, all 18 24 valves at 50 psi for water at 73f as manufactured. In these valves, a clapper hangs from a hinge, a clapper shaft, or a pin mounted to the underside of the bonnet. Wafer check operation and maintenance manual 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. Wafer style series 888 the model 888 is a patented design constructed of an epoxy coated ductile iron or 316 stainless steel body. These valves are economical and available for large pipe sizes, 2 to 12 and larger 1. All valve seals shall be reinforced epdm or fkm with replaceable internal components. 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. Kw900wlf check valve leadfree, iron, fire protection.
Asahi av valves installation,operation and maintenance manual wafer check valve 8 8 disassembling method for replacing parts be sure to conduct a safety check on all hand and power tools to be used before beginning work. Tfp1540 0818 resilientseated gate valves outside screw and yoke. That means when you order checkall valve products you are assured of receiving the highest quality check valves. The joint between the seat ring and body is sealed by the flange gasket upon installation preventing any leakage through the. The keckley wafer double disc check valves are constructed from rugged castings that are machined to exacting specifications. Model 90 wafer check valve on united brass works, inc. Reference individual technical data pages for standard disc, shaft, spring, and elastomer seat. Check valves prevent backflow by automatically closing when fluid reverses direction. Lighter weight, by 8090% than nonconventional fullbody check valves.
Check valves, also known as nonreturn or oneway valves, are designed to enable fluid to flow one way in a pipeline. Ritag type sr wafer type lift check valves these models have been installed in plants around the world for decades. Valves shall incorporate a single disc design suitable for either. These valves are economical and available for large pipe sizes, 2 to 12 and larger. Milliken bf series wafer lug butterfly valve, sizes 2 through 48 212 230psi, 1448 150psi general valves shall be of the wafer or lug design for installation between ansi 125150 flanges. The overall installation length is much shorter than a traditional combination of a wafer style check valve, butterfly valve, and spool piece.
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