Cast iron, nonrising stem type valve the cast stainless steel model uses sbr seats in the gate other seat materials are available, and seals against. Demco dm 7500 gate valve installation, operation and maintenance manual page of 8 20 you must have complete nameplate information when ordering parts from your cooper cameron valves representative. A gate valve is the most common type of valve that used in any process plant. Ipc brings to you comprehensive range of gate valves. This is the simplest design available and it is used for inexpensive valves. Bury the gate valve after putting the hand wheel into the state of shut close position. The extension of internal links continues causing compression of the seal surface assembly into the valve case creating a vacuum tight closure.
A new gate valve assembly is disclosed for installation onor in a pipe. The following detail drawings are effective 1517 and are available in pdf and dwg format. When the valve is fully open the stem back seats in the bonnet. The gate valves close turning the handwheel clockwise. Caution, before any attempt is made to disassemble, verify that the valve is sufficiently cooled down, depressurised, isolated from system pressure and secured against accidental pressurisation. Valves maintain a closed status in the event of an air pressure loss. Apply proper lubrication to spindle threading and operate the valve 23 times. For manual operated valves remove hand wheel nut, hand wheel 29 and parallel key. Types of gate valve and parts a complete guide for engineer. When the gate valve is laid underground or it exposes with concrete fig. Step 5 grease the face of the gate, the screw stem, and the oring in the face of valve seat.
Thermoplastic valves gate valves pinnacle industrial supply. It shall comply with state codes and standards, where applicable, requiring reduced lead content. Assembly shall be a colt c200, c200n as manufactured by the ames company. Put a second wrench on the valve while turning the first wrench to remove the valve assembly. Gate valves work by inserting a rectangular gate or wedge into the path of a flowing fluid. Gate valve for replacement of inlet capillaries in agilent. Stem seal, body, and seat are inspected for zero leakage under pressure, before acceptance. The fasteners are stainless steel to prevent corrosion during the life of the valve.
Thermoplastic valves gate valves gate valves pricing page 339 suitable for low pressure air handling 5 psi, not for distribution of compressed air or gas spears manufacturing company due to material cost variations, prices subject to change. Gate assembly oring before disassembly plastic pick gate assembly. Valve body seat bearing lubrication fitting expanding gate assembly packing retainer bearing retainer nut seat bonnet seal ring gate guide array 2,0005,000 psi expanding and slab gate valves are available with either cast or forged steel valve bodies and bonnets. Step 6 reinsert the plate and handlevalve assembly into the valve body. Gate valve description gate valves are primarily designed for onoff services when a straightline flow of fluid and minimum restriction is desired. As i was closing the shut off valve, water began to leak around the stem of the gate valve. If the valve has a rising stem its position can be seen just by looking at the position of the stem. Wom one of the leading manufacturers of gate valves product, offers wide range of gate valves products including torque reducer gate. Preinstallation determine that the gate valve and its plumbing is adequately supported when installed in the vacuum system. The water in the alarm line is automatically drained out, which helps to prevent false alarm due to successive transient surge in supply pressure. This will ensure a smoothly operating valve assembly. Figure 1 shows the gate valve as part of the 6495b triple quadrupole desolvation assembly. This requires a gasket to seal the joint between the body and bonnet. This 3d animated video explains how a gate valve works.
The stem is forged steel and part of the valve trim. Casing head the casing head, installed at the bottom of wellhead assembly connecting casings and various wellhead assemblies, is composed of a body, casing hanger and seal assembly. Vent station and pump corresponding to gate valve to atmosphere. Vag kos gate valve sliding washer gland flange packing ring wedge seat ring seat ring bonnet bolt drain plug body bonnet stem stem nut. Gate valves are best suited to infrequent valve operation, as any dirt in the system will cause scuffing of the seats, which slide relative to each other. The leak continued even after i reopened the gate valve. The term gate valve originated from the words gatan, gap, gasse and gat, and. Nve valves with actuators cylinder bracket assembly. Always wear rubber gloves when handling the gate valve 1.
Lead free double check valve assembly shall be constructed using lead free materials. Based on disc design, gate valves are classified into two types. 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. It contains an integral back seat shoulder, which mates with the integral backseat of the bonnet.
Hence, the basic form of a valve body typically is not spherical, but ranges from. Add new gland packing in the stuffing box of exact size having opened ends 180 with each other. Gate valves standard configurations basic cryogenic bellow seal gate valve description gate valves are primarily designed for onoff services when a straightline flow of fluid and minimum restriction is desired. It is recommended that pipe be kept approximately 0. The pipe has exterior and interior surfaces interrupted by a pipe gate opening cut into the pipe. Remove bolts that hold bonnet actuator assembly to body, or for quickclamp bonnet, undo the clamp.
Us20190186640a1 expanding gate valve assembly with. The valves shall have a ductile iron body and bonnet. Types of gate valve based on body, bonnet connection. This design allows complete removal from the valve when service is required. Zipped files containing all pdfs and all dwgs are available for downloading view the standard specifications view the community appearance manual for more information, see contact list at bottom of page. It is a linear motion valve used to start or stop fluid flow. Mkp gate valves are hydrostatically tested at assembly. If the valve has a rising stem its position can be. Each type of valve has been designed to meet specific needs. The use of an appropriate material in the gate valve assembly ensures minimum outgassing under vacuum and operational drying gas temperatures while maintaining a vacuum seal. Reinstall the operating stem assembly into the body by aligning the operating stem over the operating rod.
High pressure gate valve assembly animation youtube. Installation instructions standard gate valves read all instructions. Inspect shipping container before unpacking for damage sustained during transit. Colt tm series c200, c200n double check valve assemblies sizes. The water supply to the gate valve should be turned off at the main valve, which is usually found up the water stream from where the leaking valve is located.
Cameron ffc manual gate valve replacement parts grm. The gland, gland flange assembly utilizes a separate, two piece. The stem is designed to the basic dimensional requirements of the applicable specifications such as api 602. Valve sigma corporation 700 goldman drive cream ridge, nj 08514 2819871200 8009990109. Kennedy valve model ksrw 82 kennedy valversgv submittal sheets. Valves shall conform to the latest version of awwa standard c515 covering resilient seated gate valves for water supply service. Name plate information storage the demco 7500 gate valve should be stored off the ground, preferably on a pallet, and should remain. Gate valves are multiturn valves with rising stem i.
The valve is closed by driving the disc down into the gap between seat rings. The casing head is used for supporting the weight of technical and. A gate valve can be defined as a type of valve that used a gate or wedge type disk and the disk moves perpendicular to flow to start or stop the fluid flow in piping. This is the most popular design and used in a large number of gate valves. In such a design, a wedge slides cross a general passageway in order to control fluid flow like a sliding gate hence, the name. If a gate valve is not adequately supported, this could prevent the gate valve from. Wellhead assembly composition of wellhead assembly part a. We also look at the operating characteristics of the gate valve, its advantages, disadvantages, and its applications.
Can this be repaired or do i have to replace the gate valve. A clear vision from our leaders, places environment, health and safety at the core of our business. Hva gate valves installation and maintenance manual ideal vacuum. They are operated by a threaded stem which connects the actuator generally a hand wheel or motor to the stem of the gate. Gate valve nrs fire valve valve size item code fire valve. One of the most significant characteristics of this type of valves is its. If it is used overseas, please inquire with us separately. Assemble the discspindle assembly as before and assemble the valve and replace the old gasket. Valve body carriage side gate seal side with oring port flange.
Series 01, 02, 06, 12, 15, 18, 20, 26, 32, 33, 36, 38. Kennedy valve model ksrw 82 kennedy valve rsgv submittal sheets. 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. Design detail standards are available individually in pdf or drawing dwg files, or the entire category set can be downloaded in zip format. Proven to stand up to abrasive environments in pressures from 2,000 to 15,000 psi our f and fc gate valve parts are tested for reliability and durability. The disc and body seat rings are matched and lapped for perfect sealing. The gate valve assembly includes a nozzle that includes a distal section disposed outside the pipe that connects to a. For a correct and easy installation please refer to the installation manual and follow the instructions there. Open the faucet fully and place a wrench beneath the packing nut of the gate valve.
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