Wafer check valve pdf files

Check valves henry pratt company valve manufacturer. Mwp and each of subsidiaries are legally separate and independent entities when providing products and services. This site is like a library, you could find million book here by using search box in the header. Waste water, food stuff, all kinds of oil, weak acids and alkaline liquids operating pressure range pn16, pn 25 and pn 40 operating temperature range. Check valve shall be of the silent wafer type and the same size as the entering pipe. Champion valves is dedicated to meeting your needs with a complete range of highquality and competitively priced check valves. Mikrons miller wafer insert valves are composed of semisteel bodies. Install all wafer check valves a minimum of 5 times the nominal. Wafer checks may be installed in horizontal positions or vertical with flow moving up.

Also keep this manual in a place accessible to the operator. The wafer check valve is most suited for water and sea water lines. 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. Champion wafer check valves are designed to provide long service life if the velocity is kept within the flow rate shown in the table on page. The unique poppet design insures that the valve operates quietly and efficiently across a wide range of flow velocities. Operationmaintenance manual 720g wafer and table of. Mikron miller center guided check valves mikron valve. 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. Valves are hand lapped to ensure positive shutoff and are rated for 125 or 250 pound mating flanges. Valve shall be wafer style for bolting between ansi. Operation manual for kitz wafer type check valves 125 fwnb. The duochek wafer valve design is generally stronger, lighter, smaller, more efficient and less expensive than conventional swing check valves. 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.

Hygrade check valves are also available in asme b16. However, being smaller makes it lighter and, therefore, is more cost efficient to purchase, install and maintain. These images should therefore not be used for determining valve clearances. Model 90 wafer check valve ul listed fm approved as antiwater hammer check valve for fire pump service only. Kw900w check valve iron, fire protection, wafer style. The keckley style cw has a cracking pressure equal to or less than 0. The sure flow check wafer check valve is a precision engineered, fully developed product at the forefront of pipe system technology. Lug type valves are supplied in scallop to keep the weight as low as possible, thereby minimizing the cost. Model 90wbd wafer check valve ul listed fm approved as antiwater hammer check valve for fire pump service only. Checkall valve recommends sizing check valves to ensure proper valve operation and service life.

Wafer checks may be installed in horizontal positions or vertical with. 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. Browse fire protection products wafer check valves in the united brass works, inc. Operation manual for kitz wafer type check valves 125 fwnb we appreciate your purchasing our products. The dual plate wafer check valve lug type covers the bolt along the entire length of the body. Material 1 body 1 pvc 2 disc 1 pvc 3 stopper 1 pvc 4 shaft 1 pvc 5 shaft plug 1 pvc 6 av bolt 2 pvc 7 l bolt 1 ss400 8 spring 1 swpb wetfe coating 9 oring a 3 epdmfkm 10 oring b 1 epdmfkm 11 oring c 1 epdmfkm. 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. 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. Sizing accuracy requires the valve to be fully open, which occurs when the pressure drop across the valve reaches or exceeds three times the spring cracking pressure five times for 3s valves. A traditional wafer check valve cannot be close coupled.

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. Never install the valve directly to a pump, a bend or an elbow. The overall installation length is much shorter than a traditional. Stainless steel disc and spring for excellent corrosion resistance. The model 888vfd is a patented silent wafer style check valve. Ensure that employees read and observe this manual and other applicable documents, especially the safety instructions and warnings. The check valve is wafer style to fit between standard flanges. Operationmaintenance manual 720g wafer and table of contents. Valves shall be flanged, spigot, male threaded, grooved end or wafer style. Sure flow check can be installed with confidence into. Bronze, or stainless steel make up the disc and seat ring, and all valves have a stainless spring. 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.

The silent check valve is lubrication and maintenance free. The overall installation length is much shorter than a traditional combination of a wafer style check valve, butterfly valve, and spool piece. The valve is not designed to handle any kind of impact. The nr010 check valve prevents the return flow of water to its source and provides quiet closure and total sealing of the sealing face. Two gaskets are required, instead of the one normally used. Material 1 body 1 pvc 2 disc 1 pvc 3 stopper 1 pvc 4 shaft 1 pvc 5 shaft plug 1 pvc 6 av. The wetted surface of this product contacted by consumable water. Compact wafer silent style check valves thru 6 inches shall be rated for. The dura wafer check valve is a high performance generalpurpose. Single disc spring loaded wafer check valves features light weight,versatile design 80% to 90% less than conventional fullbody swing check valves single disc opening single integrated armdisc assembly springloaded disc calculated to increase the responsiveness of the disc elastomer oring seat. 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. 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. Valves shall be the compact wafer style and have a pressure and temperature rating equal to or greater. Check valves should be placed at a distance equal to 5 to 10 pipe diameters from.

Read online bf series wafer lugerfly valves milliken valve book pdf free download link book now. Do not use the valves without springs for pulsating applications. Mikron miller check valves are specified when a permanent, low maintenance shock proof operation is essential. The compact valve body design allows a flow area exceeding the pipe area to minimize flow. Wafer swing check valves series slm spring loaded swing check valves weights and dimensions 3 design type spring loaded wafer swing check valve design acceptable. Read all the contents of this manual before piping and using the m. Valve shall be wafer style for bolting between ansi class 125 flanges and shall be rated for 250 psi service. Dual disc, single disc, silent check, nozzle check, and other industrial wafer check valves. Iron silent check valve 125 class wafer style stainless steel trim conforms to. Maximum operating temperature limited by seat seal material. 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.

Valves can be sized using the equations on page 49. Be sure to install with the flow arrow in the proper direction. Two gaskets are required, instead of the one normally used in a flanged joint. Mss sp125 third party certified nsfansi 3722016 1400 210 note 1. 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. Install all wafer check valves a minimum of 5 times the nominal pipe diameter downstream of pumps, elbows or valves. The butterfly valve can be operated with the check valve in an open or closed position with no interference in 2 thru 6 sizes. This check valve is cast iron and facetoface according to msssp126. Wafer swing check valves series slm spring loaded swing check valves weights and dimensions 3 design type spring loaded wafer swing check valve design acceptable media potable water, sea water. To avoid premature wear in dura wafer check valves, please install check valves at a. Valves shall be the compact wafer style and have a pressure and temperature rating equal to or greater than the pipeline in which they are installed. 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.

The dft model wlc cast iron wafer style silent check valve is a springassisted, inline check valve that provides reliable, low maintenance service for a wide range of fluids and pressuretemperature combinations. All parts are removable and renewable, precision machined. All books are in clear copy here, and all files are secure so dont worry about it. The twin disc check valve includes renewable bronze discs. Dual plate wafer check valve cast iron body, stainless steel plates to suit pn16 flanges pressure temperature fire protection centre a great deal to offer wrass pressure re mperature material list body disc seat hinge pin stop pin pin retainer spring washer gasket dimensions pn16 loacto cast iron stainless steel 304 epdm stainless steel 420. Dual plate wafer check valve cast iron body, stainless steel plates to suit pn16 flanges pressure temperature fire protection centre a great deal to offer wrass pressure re.

Once the silent check valve is installed correctly it will provide the end user many years of troublefree service. See page 57 for details compliant 68eu check all valve. Model 1563 316 body 316 disc metal seat davis valve. The silent type check valve can be installed in either. Champion wafer check valves are designed to provide long service life if the velocity is kept within the flow rate shown in the table on page 7 and if a minimum of 5 pipe diameters of straight pipe is maintained downstream from a likely cause of turbulence i. Dn50 dn600 316 stainless steel wafer to suit ansi150 metal seat or soft seat. Fire protection products wafer check valves on united. The silent type check valve is built with stainless trim to give years of trouble free operation. The images are not to scale but are drawn to represent the proportions of a valve in the middle of the size range. Wafer silent check valve style cw pressure drop chart this pressure drop chart is based on the flow of clean water through the keckley wafer silent check valve. Technical specifications check valve shall be of the double disc, wafer style with torsion spring induced closure.