Neway also employed a number of conventional lathes with capacity up to machine 64 gate valves, and highly efficient. Gate valves serve as efficient stop valves with flow in either direction. Neway compact forged steel valve series consist of gate, globe and check valves, optimized by the most advanced fea finite element analysis design and manufactured in accordance with api 602, enls015761 and ansi 816. Neway s quality assurance is dedicated to the pursuit of a zero defect valve, and this has resulted in the company having more quality qualifications than most of our competitors. Gate valve is characterized by a sliding wedge which is moved by actuator perpendicular to the flow direction. Refer to the certified drawings for the final construction. This is only practical in manual valves or electronically controlled motor. For regulation we recommend to use special control gate valve type s33. Space gate valve 012102 has cast steel body that meets astm a216wcb specification and aluminum bronze trim along with flanged connection and bolted bonnet. Cryogenic flexible wedge gate valve 6163 cryogenic globe valve 6465 cryogenic swing check valve 6667 non slam nozzle check valve swncfl ncfo series 6871 api 6d slab gate valve 7277 api 6d expanding gate valve 7882 api 6d wafer pattern gate valve 83 parallel slide gate valve pressure seal bonnet class 600 2500 8485. This extends the service life of the valve and minimizes maintenance cost. Gate valve nwglv003 dual plate check valve nwgv004 non rising gate.
Neway manufactures the full series of globe valves, including t type, y type and angle type. Two high torsion springs ensure valve closure as quick as possible, and reduces water hammer, so as to extend valve life and improve system performance. The closure member of gate valves either stops or allows flow through the valve and acts somewhat like the opening or closing of a gate and is called, appropriately, the gate valve. Inside screw gate valves are generally designed shorter than outside screw gate valves and the stem and handwheel stay always at the same position. The seating surfaces of the seats and the wedge are made in compliance with api600. 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. It is forged or rolled type into one piece for all dimensions, heat treated to obtain the. When the valve is open, the closure member is fully drawn up into. Slab gate valve through conduit rising stem design walworth slab gate valves also named through conduit gate valve are manufactured and tested in accordance with the api6d standard. Flowserve edward and anchordarling nuclear application valves.
Due to the flow characteristics of the wedgetoseat design, gate valves should be operated in the fullopen or fullclose position. Gate valve description gate valves are primarily designed for onoff services when a straightline flow of fluid and minimum restriction is desired. For this feature, inside screw gate valves are widely employed for underground installation or service in narrow areas with limited room. Install the valve according to the flow indicator on the valve body. Mud line gate valves conform to api flange dimensions and pressure ratings. The main gate valves applied in the power industry include high pressure flexible wedge gate valves, parallel double gate valves and expanding gate valves etc. Both the gate valve and globe valve are commonly used in downstream applications. Dsi standard cast steel gate, globe and check valves are designed and manufactured to ensure leakage of less than 100 ppm parts per million of volatile organic compounds voc as tested pursuant to generally accepted good engineering practices for verifying fugitive emissions. Wedge discs have angled seating surfaces which form a v shape that wedges the disc between the seat rings. Starting out as a manufacturer of manual valves, kitz corporation now employs. Cast steel 150 lb space gate valve with stainless steel trim. Valve type gate valve globe valve swing check symbol ggl s code 1 3 6 9 15 25 class lb 150 300 600 900 1500 2500 symbol end.
Working medium water noncorrosive liquids steam air gases of group 1 and 2 petroleum and petroleum products the service fluids shall not contain rough impurities. When the valve is wide open, the gate is fully drawn into the valve b. Mrc global maintains large inventories of gate valves and globe valves in materials such as carbon steel, stainless steel and special alloys to serve the needs of the refining, petrochemical, chemical and process industries. Neway supplies a full range including bolted bonnet and pressure seal bonnet design. Neway awarded contract to supply offshore wind project in northern europe. It is the users responsibility to ensure that all material will be satisfactory in the intended environment. Whereas most other valve manufacturers outsource their valve casting, neway has invested millions developing two stateoftheart foundries to maintain stringent quality standards. This type of valve is very useful in transportation pipe lines for gas, crude oil and oil products. Carbon steel, stainless steel, alloy steel, duplex stainless steel end connection. Shashi menon, in transmission pipeline calculations and simulations manual, 2015. We engineer and manufacture valve solutions for all industries. Emissions after 500 cycles at ambient and 350 f issued by yarmouth research and technology lab for 16 inch class 150 gate valve after 500 cycles the measurement result was less than 50 ppm. It is optimize designed by means of advanced fea finite element analysis in accordance with api 602, en iso 15761, and ansi b16.
Drawing title nwbv001 floating ball valve nwbv002 trunnion. Velan cast steel gate, globe and check valves pdh online. Cast steel 150 lb space gate valve with aluminum bronze. Axial flow check valve neway check valve is a high performance valve designed in accordance with api sd and asme b 1684. Cast steel 150 lb space gate valve with aluminum bronze trim. Main product lines include gate, globe, check, butterfly and ball valves. Gate valve stainless steel, nonrising stem 072207 drawing.
Knife gate valves form a family of industrial valves designed to. Should the valve be used in a partially open or closed position, the bottom of the wedge and. Technical description the gate valve is an outsidescrewandyoke, full bore. In any fluid handling system, valves are the controlling element. Gate valve nwglv003 dual plate check valve nwgv004 non. Gate valves desing neway cast steel wedge gate valve have been designed to meet the requirement bo british standard bs1414,american petroleum institute standard api600 and generally conform to american national standard ansi b16. Globe valves are widely selected for their short travel. Crane recommends the use of manual or powered gear assistance. Neway compact forged gate valves are in compliance with api602. This product design assessment pda certificate 17hs16053271pda, dated 20dec2017 remains valid until. Gate valves are not quick opening or closing valves. The following are some of the disadvantages of gate valves that must be considered when selecting a gate valve for an application. The body and the bonnet are made of castings and are connected by a flanged joint. Forged steel valves bolted bonnet maintenance manual gate, globe, parallel slide and check valves, 2122465600mm velfbbm99 maintenance manuals.
Resilient wedge gate valves require considerable torque to fully shut off the flow through the. Stainless steel 150 lb space gate valve, nonrising stem. Gate valve disc designs gate valve discs may be parallel or wedge design. Gate, globe and check valves, bolted bonnet design. Note gate valves can be installed in any position without regard for the direction of the flow, unless marked in the flow direction. Gate valve types, construction, applications and advantages. Tabulated below are working pressures at 100 f for astm a106 grade b pipe in sizes corresponding to mkp gate valves. Certifications include abs, bv, dnvgl, and lloyds register. Neway compact forged steel valve series consist of gate, globe and check valves. These valves are available in size from nps 12 to 2 in ansi class 800 lbs, 1500 lbs and 25001bs. Neway globe valves are torque seated valve which are used for onoff service as well as for throttling purpose. Severe service valve for high performance applications.
Main types in the knife gate and slurry valve family. With valves of large dimensions, the sling and the. Wipe away any dirt and grit from the inside of the valve. Their designs need to match the materialwhether water, gas, oil, or another substancethat is to be controlled. Nace designated valve pressure containing parts are in accordance with the prequalified materials identified in nace mr0175mr0103. Concentrated flow across the seats of a partially opened gate valve. Mkp gate valves are designed for the maximum working pressure and test pressure tabulated below. When fully open, a gate valve has no obstruction in the flow path and so has. Neway technical research center utilizes the most advanced computer technology to improve the existing products and develop the new lines, this includes a highly educated and trained engineering team and a comprehensive internal. Nace compliant material specifications for gate valves.
Certificate nmxcc9001 mexican standards iso9001 no. Space gate valve 012101 has cast steel body that meets astm a216wcb specification and crhf trim along with flanged connection and bolted bonnet. Neway is certified to iso 9001, api 6d, ceped and neway s marine valves are type approved by abs. The gate valve is an outsidescrewandyoke, full bore with flexible wedge and rising stem. Since crane valves are used in a variety of applications, the following descriptions may provide a basic guideline in the selection of steel valves. Butt weld end dimensions shall be in accordance with asme b16. Parallel discs have seating surfaces that are parallel to each other and perpendicular to the flow path. Dimensions are indicative and vary according to standard, port design and body material. The gate is also shown as a wedge, due to the shape is resembles. Space gate valve 012202 has cast steel body that meets astm a216wcb specification and aluminum bronze trim along with flanged connection and bolted bonnet. Fullstem travel to open or close a gate valve requires many turns of its hand wheel or an actuator. Stainless steel gate, globe, check valve class 150 300 5760 cryogenic flexible wedge gate valve 6163 cryogenic globe valve 6465 cryogenic swing check valve 6667 non slam nozzle check valve swncfl ncfo series 6871 api 6d slab gate valve 7277 api 6d expanding gate valve 7882 api 6d wafer pattern gate valve 83. Since then, raphael is leading the israeli and international market valve industry with its wide and.
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