The selection of materials for components of crane valves is based upon expert metallurgical, engineering, foundry and fabrication knowledge as well as on many years of usage experience. The size of a stop check valve should be based on the boiler capacity and steam flow through the valve, rather than on the size of the boiler outlet or. As part of the crane valve group, crane supply is the exclusive distributor of. The expertise our company can draw from relating to correct valve selection is second to none in the distribution. Unless the valve contains ptfe packing andor gasket, leave valves assembled and in the lightly closed position during installation, welding and postweld heat treatment.
Velan is a world leader in the design and production of a wide range of cast and forged steel gate, globe, check, ball, tripleoffset butterfly, knife gate, highly engineered severe service valves, and steam traps. Most crane swing check valves can be installed in horizontal or verti cal, upward flow. Crane noz chek one piece body casting valve hd duration. Crane cast steel swing check valves crane chempharma. They offer low resistance to flow and are particularly suited to low. Check valves crane fluid systems our genius is valves. The duochek ii wafer valve design is generally stronger, lighter, smaller, more efficient and less expensive than conventional swing check valves. Model number rt60 serial number 36xxx item part description page. Crane nuclear is a leading provider of valves, valve services, valve diagnostics and training to the nuclear industry. Ensure that bolts, nuts and other hardware are tight. Crane supply is in a unique position to provide customers expert technical advice on all types of valves and their application. Gate valves globe valves swing check valves tilting disc check valves gate valves serve as efficient stop valves with flow in either direction. The above values for swing check valves are correct only when. However, you can download 1 technical file, in the section below.
Preventative maintenance is pretty standard for pumps, but what about valves. As part of the crane valve group, crane supply is the exclusive distributor of crane brands in canada. Figure 28e flanged, ypattern with bolted bonnet straightway size range. Crane fluid systems hasnt formatted technical specifications for fm465 wafer check valve yet. Determining the proper valve size needed is important. Most piping systems utilize pumps or compressors to generate needed.
This will prevent the valve seat from floating or warping during the process. Figure 30e flanged, ypattern with bolted bonnet angle size range. This product range includes, but is not limited to. Duochek high performance nonslam check valves are the original mission wafer check. They are entirely automatic in action, depending upon pressure and velocity of flow within the line to perform their functions of opening and closing. Wafer check valves are preferred because of their compactness. Taper threaded to bs en 102262 iso 71 formerly bs 21. Duochek high performance nonslam check valves are the original. Marking and identification of crane steel valves conforms to asme b16. Crane also manufactures bronze ball valves, iron wafer and lug butterfly valves, bronze and iron gate globe and check valves, and alloy valves. Crane valvecrane energy flow sol figure 377 316l stainless steel flanged check valve. Most crane swing check valves can be installed in horizontal or vertical, upward flow, piping.
The flow coefficient cv expresses flow rate in usg per minute of water at 60f. Crane fluid systems offers a full range of general valves, wras approved public health valves for hot and cold water systems and pipe fittings and unions, many of which carry the bsi kitemark. Check valves wafer style australian pipeline valve. We pride ourselves on being a fullservice solution provider for all your.
Duochek high performance check valves superior valve co. Not recommended for use with reciprocating pumps or air compressors in liquid or gas services. Since crane valves are used in a variety of applications, the following descriptions may provide a basic guideline in the selection of steel valves. Duochek high performance nonslam check valves crane. If you skimp on maintenance, youll be faced with sudden failures and unexpected replacement costs. Accessoriesstockham iron body valves may be furnished with motor operators, gearings, bypasses, floorstands, extension stems, lever and weight attachment or other accessories. Its design meets api 594 which is approximately one. Normally, the check valve closes under the action of the spring force on the left.
Chapter 5 is a comprehensive guide to selecting the best control valve for an. Jul 11, 2016 fbv dual plate wafer check valve duration. Specification details for fm469 swing check valve check valve crane fluid systems hasnt formatted technical specifications for fm469 swing check valve yet. Markingnumerals indicate the size and pressure class. Velan is a world leader in the design and production of a wide range of cast and forged steel gate, globe, check, ball, tripleoffset butterfly, knife gate, highly engineered severe service valves, and steam traps offering superior performance across all major industrial applications. Our businesses are all known for proprietary and differentiated technology, quality. Crane valves are suitable for liquid working pressures specified on catalog pages only when used in hydraulic installations in which shock is absent or negligible. Duochek valves have long been the standard for lowpressure drop flow reversal protection. Stockham, triangle, and unichek are all trademarks of crane co. In almost every piping system, there is a need for backflow prevention. Most crane swing check valves can be installed in horizontal or vertical, upward flow,piping.
Check valves permit flow in one direction only, and close automatically if flow reverses. Its design meets api 594 which is approximately one fourth the. The valve is available in the sizes, pressure classes and configurations required to meet the most demanding of applications. However, you can download 2 technical files, in the section below. Our businesses are all known for proprietary and differentiated technology, quality and reliability, deep vertical expertise, and responsiveness to unique customer needs. To satisfy your needs, specify crane valvesthe worldwide. Crane duochek high performance nonslam check valves are the original mission manufacturing company wafer check valves introduced to the market in the late 50s. Duochek offers retainerless designs to api 594 endtoend dimensions in steel bodied wafer and lug style with a wide variety of trim materials including both metal and resilient seats. Figure 30e iron body stop check valve class 250 ypattern.
These valves are made from cast iron, cast steel, stainless steel, and a broad variety of exotic materials. If the initial pressure is higher than the entrance pressure, the valve closes and. Crane also manufactures bronze ball valves, iron wafer and lug butterfly valves, and bronze gate, globe, and check valves. The normal position of the plates is closed, held against the seat by the unique spring design. It is illegal to install products that are not lead free in. Iron body swing check valve figure 373 class 125 bolted cap. Crane cast iron gate, globe, angle and check valves.
The size of a stop check valve should be based on the boiler capacity and steam flow through the valve, rather than on the size of the boiler outlet or existing piping. Class 300 threaded cap brassbronze disc threaded ends figure 76e. We pride ourselves on being a fullservice solution provider for all your valve related needs drawing upon our rich history of supporting the industry since 1956. Please check out the similar products section for alternatives. Most hattersley swing check valves can be installed in horizontal or vertical upward flow piping.
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. Inline check valve is part of the pipe and shut off the stream of fluid. Consult crane process flow technologies gmbhs entire duochek ii check valves catalogue. Iron body stop check valve figure 28e class 250 ypattern. Crane duochek check valves valve automation cleveland ohio. Before installing solderjoint valves, be sure solder or brazing alloy melting point is high enough to withstand line pressure, temperature conditions, and is compatible with fluid medium. If possible, open and close the valves to make sure they arent seized. As fl ow begins, the heels of the two plates are lifted off the seat face on the central rib. 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. Crane valve services is a premier provider of valves, valve diagnostics and valve related services for the global nuclear power market. They offer low resistance to flow and are particularly suited to low velocity service. A ball check valve is a type of check valve in which the movable part is a spherical ball, as illustrated in figure 4. In case that backflow occurs on the downstream side, the valve is fully or partially lifted and then abruptly closes.
Join us at the harleydavidson museum in milwaukee for a day packed with educational sessions, live demonstrations, and a end of day speaker you just cant miss. The sudden closure of a valve in a hydraulic system causes the. Manitowoc crane group machine component index date. Check valve tags are typically mounted on the rim of the cap. Pdf swing check valve design criteria and cfd validation. Iron body swing check valve figure 373 class 125 bolted. Backed by cranes rich heritage, the valve services business unit carries an extensive range of valve brands and designs which has supported the commercial nuclear power industry since 1955. Cast arrows indicate direction of flow on check, globe and angle valves. Tag location for gate and globe valves is typically on the valve yoke or bodybonnet flange.
Swing check valves are opened and closed by line pressure or backpressure. Supercheck check valves wafer style 8 nonslam supercheck is a nonslam check valve because it operates on fl ow cessation, not fl ow reversal. Iron valves described in this section meet or exceed the mss sp82, mss sp70, mss sp71 and mss sp85 specifications for testing. Ball check valves are used in spray devices, dispenser spigots, manual and other pumps, and refillable dispensing syringes. Aws swing check valves require a low opening pressure. Piston check valve, conventional port, bolted bonnet, npt ends technical requirements 1. Its no secret that poorly maintained equipment doesnt last as long as it should. The resulting opening power directs the valve against a spring1 page 5, dn 32 40, pos. Chapter 4 describes digital valve controllers, analog positioners, boosters, and other control valve accessories. It is illegal to install products that are not lead free in accordance with us federal or other applicable law in potable water systems anticipated for human consumption. They are commonly used where a minimum pressure drop is. Duochek high performance nonslam check valves are the original mission manufacturing company wafer check valves introduced to the market in the late 50s. Crane also manufactures bronze ball valves, iron wafer and lug butterfly valves, and iron gate, globe, and check valves.
To satisfy your needs, specify check valves from crane energy flow solutions the worldwide leader of valves manufactured for the prevention of backflow. Chapter 2 develops the vital topic of control valve performance. Preventative maintenance for valves crane engineering. Face to face dimension conform to manufacturers standard 4. Most crane swing check valves can be installed in horizontal or vertical, upward. Swing check valves operate in horizontal pipelines, or in. Duochek high performance nonslam check valves are the original mission manufacturing company wafer check valves introduced. Swing check valves prevent reversal of flow through pipe lines. Check valves are used to stop backflow and protect rotating equipment or other mechanical devices from the sudden backflow surges that may occur. Identification plates bear the following information. We serve some of the most demanding end markets, from.
1618 908 740 908 95 585 566 300 705 1510 325 890 1433 495 357 786 932 966 180 453 429 450 1501 84 79 1001 215 1026 1098 1473 1352 1407 1266 252 1271 1342 249 1282 608 1426 287 928 980 703 1365 371 1151 869 64