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Thank you for choosing KITZ products. For safe and trouble-free function and performance of the product, make sure to read and understand all items in this manual before valve Keep this manual in a convenient place and mounting and operation.
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Document No.: KE-1068-00 This manual applies to the manually operated flanged end floating type cryogenic ball valves on the KITZ UTDZL series. For electric or pneumatic valve operation, refer to the operation manual prepared by the manufacturer of the relevant valve actuators. SAFETY PRECAUTIONS For safe use of the product, please read all safety precautions in this manual before handling, transportation, mounting and operation of the product. Safety precautions in this manual are provided to urge safe and proper use of the product and prevent personal injury and property damage. This manual classifies the safety precautions into [Warning] and [Caution], according to the hazard level, to clearly indicate the extent and severity of the risk. Failure to follow these instructions could result in a safety hazard. Indicates an imminently hazardous situation that, if not avoided, may result in serious injury or death. Indicates a potentially hazardous situation that, if not avoided, may result in minor or moderated injury and product damage. Indicates “prohibited” actions that must NOT be carried out. Indicates “mandatory” actions that must be carried out. NOTES TO USERS This manual is designed to show an appropriate usage of the product for transportation, storage, installation, operation, and maintenance. Be sure to read through this manual before handling the product. This manual covers normal usage of the product. If technical assistance beyond the scope of this manual is required, contact KITZ Corporation or its distributors. The specifications for operation, maintenance and inspection described in this manual have been determined with consideration for safety in valve operation. DO NOT operate the product beyond the specification range. ...
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Document No.: KE-1068-00 CONTENTS Page I Construction and Design Features ・・・・・・・・・・・・・・・・・・・・・・・・・・・・1 II Valve Operation Device・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 5 III Shipping, Handling and Storage ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・8 IV Valve Installation ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・11 V Valve Operation ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・17 VI Periodic Inspection and Maintenance ・・・・・・・・・・・・・・・・・・・・・・・・22 VII Disassembly and Reassembly ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・26 ...
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Document No.: KE-1068-00 Page: 1/34 I. Construction and Design Features ...
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I. Construction and Design Features 1. Construction and Function 1.1 The valve construction and part names are as shown in the following page. 1.2 The extended bonnet can prevent the gland packing from being directly exposed to the service fluid and minimize a temperature decrease of the packing. The bonnet length is calculated so that the temperature of the stuffing box does not reach −29℃ or less. 1.3 The ball in the valve is not fixed to any component parts such as the stem, but it is supported by two ball seats installed in the upstream side and the downstream side. When the valve is pressurized to close, the ball is pressed to the downstream seat to seal and shut off the flow of the line fluid. 1.4 The UTDZL series cryogenic ball valves in nominal diameter 1 1/2B or below are unidirectional. In order to prevent the excessive pressure in the body, a pressure release hole (vent hole) is provided to the upstream side of the ball. The pressure from the downstream side cannot be sealed. 1.5 The UTDZL series cryogenic ball valves in nominal diameter 2B or above are also unidirectional. In order to prevent the excessive pressure in the body, a seat spring is provided on the back of the ball seat in the upstream side to release the pressure from the valve interior. As it is designed that the seat spring pushes the ball to the downstream side, the pressure from the downstream cannot be sealed. 1.6 Rotation of the stem by 90 °fully opens or closes the valve. 1.7 The UTDZL series cryogenic ball valves are designed for use in the fully open position or fully closed position only. ...
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Document No.: KE-1068-00 Page: 3/34 I. Construction and Design Features Lever handle Gland Gland packing Extension bonnet Stem Vent hole Gasket Body Gasket Ball seat Gasket Body cap Seat spring Ball ...
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Document No.: KE-1068-00 Page: 4/34 I. Construction and Design Features 2. Design Features 2.1 Blowout-Proof Stem The lower end of the stem incorporates a blowout-proof shoulder to prevent blowout of the stem caused by internal pressure. This shoulder also functions similarly to a backseat, minimizing external leakage from the valve stem area even when the gland packing is damaged in a plant fire. After fire Before Fire 2.2 Body Seal The body and body cap are double sealed with the gasket and metal-to-metal touch seal to minimize the external leakage from the connection area. Ball Ball Metal ...
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Document No.: KE-1068-00 Page: 6/34 II. Valve Operation Device 1. Lever Handle Type 1.1 A lever handle is directly mounted on the valve. 1.2 Rotating the lever handle clockwise by 90 °closes the valve, and moving the lever handle counterclockwise by 90 °opens the valve. Flow Direction Open Flow Direction Close ...
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Document No.: KE-1068-00 Page: 7/34 II. Valve Operation Device 2. Worm Gear Type 2.1 A worm gear is mounted on the valve. 2.2 According to the arrow or letter on the handwheel, turning the handwheel clockwise closes the valve, and turning the handwheel counterclockwise opens the valve. 2.3 Required handwheel operating torque varies depending on the valve size, pressure and opening position. 2.4 Worm gear operator is a device to transmit a large torque the valve stem, converting a torque from the drive shaft by means of speed reduction mechanism of the worn gears. Close Open ...
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Document No.: KE-1068-00 Page: 8/34 III. Shipping, Handling and Storage ...
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Document No.: KE-1068-00 Page: 9/34 III. Shipping, Handling and Storage 1. Sipping and Handling 1.1 Precautions for Shipping and Handling Valves (1) Keep off the valve lifting area to prevent personal injury caused by unsecured valves. (1) Take care not to damage the coated surfaces of the gear unit during shipment. This may cause rust or other types of corrosion to form on the gear unit. Any damaged surface should be adequately treated. 1.2 Shipping and Handling Valves 1.2.1 Keep the product in its original packaging during shipment. If protective covers are found missing during transportation, provide an appropriate type of protective covers. 1.2.2 DO NOT throw, drop, drag or roll valves. Any strong mechanical impact should be avoided. ...
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Document No.: KE-1068-00 Page: 10/34 III. Shipping, Handling and Storage 2. Storage 2.1 Precautions for Valve Storage (1) DO NOT store valves in a corrosive environment. Corrosion may occur in the threaded parts and cause malfunction. (2) DO NOT remove protective covers from flange sections until just before valve installation. Intrusion of foreign objects into valves could cause damage to the closure elements such as ball seats. (3) DO NOT drop, overturn or shake valves, nor apply any excessive load to valves. Valve function may be damaged. (4) DO NOT carelessly pile up the products. Unstable piles of products may lead to personal injury or product damage. (5) Keep valves in the fully open position during storage. Storing valves in the partially open position may deform the ball seats and cause internal leakage. Storing valves in the fully closed position may damage the ball, when protective covers are torn or removed. 2.2 Storage 2.2.1 Store valves in a dust-free, dry and well-ventilated room. 2.2.2 DO NOT store valves directly on the ground or a concrete floor. Place packed valves on the pallet. 2.2.3 Low temperature and cryogenic valves need extra care to prevent dust and humidity. DO NOT store valves outdoors. 2.2.4 Oil and water-free treatment is provided to every fluid contact part of the low temperature and cryogenic valves, and the valves are individually packed with desiccant ...
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Document No.: KE-1068-00 Page: 12/34 IV. Valve Installation 1. Precautions for Valve Installation (1) Check the valve specifications with the identification plate or tag and the relevant catalog, (and ensure that the exact valves specified in your piping arrangement plan have been provided. The service fluid, pressure and temperature determine the compatibility of the sealing materials.) Incorrect use of the product beyond the specifications could cause failures such as internal or external leakage. (2) DO NOT install the valve for pipe end service. Doing so may cause external leakage. In case the valve is used for pipe end service, use a blank flange to prevent leakage. (1) Keep a secure footing for valve installation and operation. (2) Sufficient lighting should be provided for valve operation. (3) Piping should be properly supported, if needed. 1.1 Allow sufficient room for valve operation, installation and maintenance, considering the valve height and movable range of the lever handle. 1.2 Take appropriate measures for smooth operation, inspection and maintenance, in case valve is installed in a small space by necessity. 1.3 Try not to install valve in the place where valve functions may be hampered by such outer forces as vibration. 1.4 Install valve in an upright position in horizontal piping. ...
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Document No.: KE-1068-00 Page: 13/34 IV. Valve Installation 2. Precautions for Valve Installation (1) Keep off the valve lifting area to prevent personal injury caused by unsecured valves. (1) Take care not to catch fingers in flanges during mounting work. (2) Take care not to damage flange surfaces. (3) Pipes should be properly supported, as needed, to align the upstream and downstream pipes during piping work. (4) For unidirectional valves, flow direction is shown with an arrow on the body. Match the fluid flow direction with the arrow and install the valve in the correct direction. Install the valve by placing the vent hole side or the seat spring side to come to the high pressure side when the valve is in the closed position. (5) Pressure applied to the gland packing may be lowered due to stress relaxation during transportation or storage, and may cause leakage. Retighten the gland packing before operation. (6) Be sure to insert new gaskets for valve mounting to pipes. ...
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Document No.: KE-1068-00 Page: 14/34 IV. Valve Installation 2.1 Check the followings before installation. (1) Service conditions of fluid, pressure and temperature are within the range of the specifications. (2) Valve flanges correspond with pipe flanges. (3) No scratches or other indications of flaw are found on the valve flange surfaces and pipe flange surfaces. (4) The distance between the pipe flanges corresponds with the valve face-to-face dimension including the gasket thickness. (5) The center of the upstream pipe and downstream pipe is accurately aligned. (6) Pipe flanges face parallel to each other. Bolt holes of the flanges are symmetrically lined up against the centerline of the flanges. 2.2 Clean the connecting pipes to remove any foreign objects such as sand, dust or weld spatters. 2.3 DO NOT throw, drop, drag or roll valves. Any strong mechanical impact should be avoided. 2.4 Remove flange covers from valves just before installation. 2.5 Pay extra attention to the pressure and shut-off direction of unidirectional valve. 2.6 Install valves in an upright position in horizontal piping. 2.7 Excessive piping stress on valve may damage the valve sealing performance. Pay extra ...
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Document No.: KE-1068-00 Page: 15/34 IV. Valve Installation 2.9 Condensation, which will lead to operation failure, may form when valve is cooled down with air trapped inside the valve. Let the air out of the valve by following the instructions below. (1) Fully open all valves in the piping after installation. (2) Let helium gas or nitrogen gas flow into valve for at least two minutes, regardless of the valve size. (3) The gas pressure should be 0.3MPa or higher. (4) In case valve is connected to other devices, fill the gas in the devices at the same time. (5) Ensure not to let air into valve after cleaning. (6) DO NOT operate valve while letting the gas flow into the valve. ...
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Document No.: KE-1068-00 Page: 16/34 IV. Valve Installation 3. Installation Procedures 3.1 Make sure that the pipes are aligned accurately. 3.2 Ensure that the space between the pipe flanges is appropriate for the valve face-to-face dimension including the gasket thickness. 3.3 Place the valve between the pipe flanges and then insert the bolts through the bottom bolt holes and temporarily tighten them. 3.4 Insert the gaskets between the valve and the pipe flanges. Gaskets 3.5 Make sure the correct alignment of the gaskets, which are held in place with the bottom bolts and useful for positioning. 3.6 Attach the remaining bolts and nuts, and temporarily tighten them. 3.7 Evenly and alternately tighten the bolts in a star pattern as shown below. When bolts are properly tightened, both ends of each bolt will evenly protrude beyond the nuts. ...
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Document No.: KE-1068-00 Page: 18/34 V. Valve Operation 1. Precautions for Valve Operation (1) DO NOT apply excessive force to the lever handle or handwheel using a pipe or any other device to operate valve. (2) DO NOT loosen bolts or nuts used in the gland, bonnet flanges and end flanges of pressurized valve. (3) DO NOT use valve in a partially open position. Such use may damage ball seats and cause seat leakage. (4) Retighten gland bolts and nuts before operating valve. Check the handle torque while tightening the bolts and nuts to avoid over-tightening. Tighten the gland bolts alternately and evenly. (5) Keep valve in the fully open position during a line pressure test or leakage test. Performing such tests with the valve in the fully closed position may deform the ball seats, leading to internal through-bore leakage. (6) When the fluid temperature fluctuates, stress relaxation of gland packing is likely to occur. Retighten the gland bolts and nuts after the fluid temperature has been stabilized. (7) Take some appropriate measures to prevent freezing, as needed. 2. Valve Opening/Closing 2.1 Lever Handle type Rotation of the lever handle clockwise by 90°closes the valve and counterclockwise by 90°opens the valve. 2.2 Worm Gear Type ...
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Document No.: KE-1068-00 Page: 19/34 V. Valve Operation 3. Daily Inspection Conduct daily inspection to ensure safe and satisfactory operation. Inspection Areas to be Inspection Remedial Measures Items inspected Methods Visual check Retighten the gland bolts. Gland area External leakage Visual check Retighten the flange bolts. Flanged areas Visual check Valve surfaces Replace the valve. Auditory Valve body Consult a piping engineer check Loosened Auditory Abnormal noise Retighten the bolts. ...
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Document No.: KE-1068-00 Page: 20/34 V. Valve Operation 4. Corrective Measures (1) Take safety measures against toxic, flammable or corrosive fluids. (1) Wear protective items such as goggles, gloves and working boots. (2) Reduce the line pressure to the atmospheric level before retightening gland and flange bolts. (3) Operators should take protective measures to prevent direct exposure to the fluid in case the fluid is expected to spout out. (4) Reduce the line pressure to the atmospheric level when packing and gaskets are replaced or when bolts and nuts are loosened. Operators should take protective measures to prevent direct exposure to the fluid in case the fluid is expected to spout out. (5) Never apply any oil or grease to fluid contact areas. 4.1 Leakage from gland area Retighten the gland bolts or nuts, if leakage from the gland area is detected. Evenly and alternately tighten the bolts for the gland flange as shown below. Adequate torque should be applied when retightening the bolts so that the operation torque will not be too heavy. If leakage does not stop, replace the packing. 4.2 Leakage from flanged area Evenly and alternately tighten the bolts in a star pattern as shown on the right. ...
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Document No.: KE-1068-00 Page: 21/34 V. Valve Operation 5. Trouble Shooting Defects Possible Causes Remedial Measures Valve Foreign objects may have stuck Disassemble the valve and opening/closing in the ball seats or cavity. inspect the valve components. operation disturbed Foreign objects may have stuck Remove the foreign objects and to the stem. check the valve. Slightly open the valve and Foreign objects may have stuck flush out the foreign objects. to the ball seats or in the cavity. Excessive Disassemble the valve and inspect the valve components. valve torque The gland bolts may have been Loosen the gland bolts and then over-tightened. retighten them lightly but securely enough to stop the leakage. Bolts and nuts have loosened Retighten the gland bolts. Leakage from the Uneven tightening of the gland Loosen the bolts and then gland area bolts. ...
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Document No.: KE-1068-00 Page: 22/34 VI. Periodic Inspection and Maintenance ...
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Document No.: KE-1068-00 Page: 23/34 VI. Periodic Inspection and Maintenance 1. Periodic Inspection 1.1 Conduct a periodic inspection, with the valve kept installed in the piping, at least once a year. 1.2 Examine valves to ensure trouble-free and safe operation. 1.3 Inspection items and methods are the same as daily inspection. 1.4 Conduct a periodic inspection on the valves that are not inspected or operated daily as well. (A periodic inspection should be carried out on all valves.) 1.5 Thorough inspection is required for the valves when: a ) valve malfunction could result in a major shutdown of the entire plant unit. b) the pipeline handles adhesive medium that tends to get stuck and clog the pipelines. c) corrosion and/or wear caused by fluid are expected. Remove valve from pipeline and disassemble it for further inspection, if needed. 1.6 It is recommended to replace gland packing and gaskets every time a periodic inspection is conducted. ...
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Document No.: KE-1068-00 Page: 24/34 VI. Periodic Inspection and Maintenance 2. Inspection and Maintenance In case pipelines or facilities where valves are installed are shut down for inspection, remove the valves form the pipeline and perform a seat/external leakage test and operation test, if needed. If any sign of defect is observed, disassemble the valve for inspection. The reassembled valve must pass the required inspections before being returned to service. 2.1 Precautions for valve removal from pipeline and reinstallation (1) Discharge the fluid from the pipeline and reduce the line pressure to the atmospheric level before removing valve. Some fluid may remain between the valve mounted at the end of the pipeline and the blank flange. Make sure to open the valve and discharge the fluid from the pipeline before removing the blank flange. (2) Fluid and pressure may be trapped in valve when the valve is fully closed. Before removing the valve, discharge the fluid and pressure trapped in the valve body by partially opening the valve. (3) Discharge the fluid completely from the pipeline and valve interior when fluid is toxic, flammable or corrosive. (4) Take protective measures to prevent direct exposure to fluid. No open flame or smoking should be allowed in the work area. (5) Keep off the working area to prevent personal injury when valve is installed at a high position. (1) Wear protective items such as goggles, gloves and working boots. ...
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Document No.: KE-1068-00 Page: 25/34 VI. Periodic Inspection and Maintenance 2.2 Disassembly and Reassembly Refer to “VII. Disassembly and Reassembly” for the procedures. 2.3 Test and Inspection Refer to the following procedures for test and inspection. 2.3.1 Operation Test (1) Check the operability of the lever handle or handwheel and make sure that they operate smoothly without galling or sticking of the driving parts. (2) Make sure that the stem is securely assembled with the ball. (3) Make sure that there should be no offset of the ball and body ports of the fully open valve in a lateral direction. The ball spherical surface should not protrude from the valve port other than the round ball port edges. 2.3.2 Shell Test and Seat Leakage Test (1) Precautions for shell test and seat leakage test (1) Wear protective items such as goggles, gloves and working boots. (2) Perform shell test and seat leakage test with attention to safety. (2) Shell test and seat leakage test A ll of the reassembled valves are subject to a shell test and seat leakage test with clean dry air or nitrogen at the required test pressure. Refer to JIS B 2003, JPI-7S-39, API ...
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Document No.: KE-1068-00 Page: 26/34 VII. Disassembly and Reassembly ...
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Document No.: KE-1068-00 Page: 27/34 VII. Disassembly and Reassembly 1. Disassembly Procedures 1.1 Precautions for Disassembly (1) Take protective measures to prevent exposure to the fluid trapped in the valve. No open flame or smoking should be allowed in the work area. (1) It is recommended to call the manufacturer of the valve when disassembly or inspection is required. Special tools and appropriate instructions are required for valve disassembly and reassembly. (2) Wear protective items such as goggles, gloves and working boots. (3) Take care not to catch fingers during disassembly. (4) When disassembling a large size valve, use an appropriate lifting machine for your safety. 1.2 Before Disassembly 1.2.1 Place the valve in a dust-free area. 1.2.2 Take care not to damage the flange surfaces, gasket sealing surfaces, packing sealing surfaces, ball seat contact areas, ball, and stem. 1.2.3 Before disassembling the valve, put matchmarks with indelible ink on the body and the bonnet flange as well as body and the body cap flange of the lever handle type valve. As for the worm-gear type, put matchmarks on the gear unit and the bracket as well as the bracket and the bonnet. When reassembling the valve, align these matchmarks to ensure the correct positions. ...
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Document No.: KE-1068-00 Page: 28/34 VII. Disassembly and Reassembly 1.3 Disassembly 1.3.1 Fully close the valve. <Disassembly procedures for lever handle operated valve> 1.3.2 Remove the handle lock plate bolt (123A) and then remove the handle lock plate (43) and lever handle (9) or handle head (9B) from the stem (3). For the handle head type (9B), remove the handle bolt (123B) and handle bar (9A). 1.3.3 Remove the snap ring (48), key lock plate (40) and stopper (49) from the stem (3). 1.3.4 Remove the stopper plate bolts (126) and stopper plate (51) from the bonnet (202). 1.3.5 Continue to the common procedure 1.3.9. <Disassembly procedure for gear operated valve> 1.3.6 Remove the set bolts (99) and then remove the gear unit (102), with the bracket (93) kept attached, from the bonnet (202). 1.3.7 Remove the connector (92) from the stem (3) or the gear unit (102). 1.3.8 Continue to the common procedure 1.3.9. <Common procedures> 1.3.9 Place the valve body (1) with the end flange on the body cap (2) side facing up. 1.3.10 Remove the cap nuts (33A). 1.3.11 Remove the body cap (2) from the body (1). 1.3.12 Remove the gasket (19) and ball seat (30A) from the body (1) or body cap (2). For the valves in nominal size 2B and above, also remove the seat spring (143). ...
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Document No.: KE-1068-00 Page: 29/34 VII. Disassembly and Reassembly 1.3.15 Place the valve body (1) with the bonnet (202) side up. 1.3.16 Remove the bonnet nuts (33B). 1.3.17 Remove the bonnet (202) from the body (1). Then the stem (3) and its adjacent parts will also come off. Remove the set pin (14) from the body (1). 1.3.18 Remove the gasket (21) from the bonnet (202). 1.3.19 Remove the thrust washer (47) from the body (1). 1.3.20 Remove the gland bolts (36) and the gland (7) from the bonnet (202). 1.3.21 Remove the coned disc springs (145) from the gland bolts (36). 1.3.22 Remove the gland bush (57) from the gland (7). 1.3.23 Press the stem (3) to remove it out of the bonnet (202). 1.3.24 Remove the stem bearing (67) from the stem (3) or bonnet (202). 1.3.25 Remove the gland washer (58) and gland packing (8) from the bonnet (202). ...
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2.1 Precautions for Reassembly (1) Wear protective items such as goggles, gloves and working boots. (2) No smoking or no open flame should be allowed in the working area. (3) Take care not to catch fingers during reassembly. (4) Replace ball seats, gland packing, gaskets, stem bearing, thrust washer and gland bush with new one(s). Reuse of these components parts may cause leakage or malfunction. (5) When lifting a large size valve, use an appropriate lifting machine for your safety. (6) DO NOT apply any grease or lubricant to fluid contact areas. 2.2 Before Reassembly 2.2.1 Check all parts before reassembly. If any unsatisfactory is found, replace the valve. 2.2.2 Consumable parts such as ball seats, gland packing, gaskets, thrust washer, stem bearing and gland bush should be prepared in advance. 2.2.3 Clean the parts that are to be reused to remove dust and foreign objects. 2.2.4 Assemble valve in a dust-free area. 2.2.5 Take care not to damage flange surfaces, gasket sealing surfaces, packing sealing surfaces, ball seat contact areas, ball, ball seats, and stem. 2.2.6 For the UTDZL series valves in size 1 1/2B and below, a vent hole is provided on the upstream side of the ball. Pay special attention to the direction of the ball when reassembling valve. Also, extra care is required when installing ball seats. The ball seats on the upstream side and the downstream side are different in shape and material. ...
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Document No.: KE-1068-00 Page: 31/34 VII. Disassembly and Reassembly 2.2.7 A seat spring is provided to the UTDZL series valves in size 2B and above. Always remember to reinstall the seat spring when reassembling valve. 2.2.8 When reassembling valve, align the matchmarks provided before disassembling the valve. 2.2.9 All bolts and nuts should be securely tightened. 2.3 Reassembly Procedures 2.3.1 Assemble the stem bearing (67) to the stem (3). 2.3.2 Insert the stem (3) from the inside of the bonnet (202) securely so that the stem collar touches the bonnet (202). Then, set the stem (3) in the fully closed position. 2.3.3 Set the coned disc springs (145) to the gland bolts (36). Set the convex surface of the coned disc spring to come to the bolt head side. 2.3.4 Set the gland bush (57) to the gland (7). 2.3.5 Set the gland packing (8), gland washer (58) and gland (7) to the bonnet (202) and temporarily tighten them with the gland bolts (36). Pay attention to the direction of the gland packing (8). The mark must come to the upper side. 2.3.6 Place the body (1) with bonnet flange side facing up and secure it. 2.3.7 Set the thrust washer (47) and gasket (21) to the body (1). 2.3.8 Set the set pin (14) to the body (1). 2.3.9 Set the bonnet (202) and the stem (3) to the body (1). ...
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Document No.: KE-1068-00 Page: 32/34 VII. Disassembly and Reassembly 2.3.12 Set the ball seat (30B) to the body (1). Make sure that the stem (3) is in the fully closed position. 2.3.13 For the valves in nominal size 1 1/2B and below, set the ball seat (30A) to the bonnet (2). For the valves in nominal size 2B and above, set the seat spring (143) and the ball seat (30A) to the bonnet (2). 2.3.14 Install the ball (4) in the body (1). 2.3.15 Set the gasket (19) to the body (1). 2.3.16 Assemble the body cap (2) to the body (1). Make sure to set the body cap in the correct position without dropping the ball seat (30A) and seat spring (143). 2.3.17 Secure the body cap (2) to the body (1) with the cap nuts (33A). Evenly and alternately tighten the nuts. When the nuts are properly tightened, each end of the bolts will evenly protrude beyond the nuts. 2.3.18 Tighten the gland bolts (36) by applying proper torque. <Assembly procedures for lever handle operated valve> 2.3.19 Set the stopper plate (51) to the bonnet (202) and secure them with the stopper plate bolts (126). 2.3.20 Set the stopper (49) and key lock plate (40), and then secure them with the snap ring (48). ...
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Document No.: KE-1068-00 Page: 33/34 * Make sure that all threaded parts have been securely tightened. Retighten them if they are loosened. ...
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Document No.: KE-1068-00 Page: 34/34 VII. Disassembly and Reassembly Name of Parts 3. Cross-sectional Assembly Drawing 1 Body 2 Body cap 3 Stem 4 Ball 7 Gland 8 Gland packing 9 Lever handle 9A Handle bar 9B Handle head 14 Set pin Head & Bar Type 16 Name plate 19 Gasket 21 Gasket 30A Ball seat ...
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