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Summary of Contents for Kitz KE-2015-00
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Document No.: KE-2015-00 Operation and Maintenance Manual A-Type Damper D-Type Damper [Wafer Type] 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 installation and operation. Keep this manual accessible to all operational personnel. ...
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Document No.: KE-2015-00 This manual applies to the manual operation of the KITZ A-type and D-type dampers (wafer type). For electric or pneumatic operation, refer to the operation manual prepared by the manufacturers of the relevant actuators. SAFETY PRECAUTIONS For the safe use of the product, read all safety precautions in this manual before handling the product. The safety precautions in this manual are determined to ensure safe and proper use of the product and to prevent personal injury and property damage. This manual uses two terms, Warning and Caution , according to the hazard level, to clearly indicate the extent and severity of the risk. Both Warning and Caution indicate important safety instructions. Please be sure to follow them. 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 moderate injury and product damage. Indicates a prohibited action that must not be carried out. Indicates a mandatory action that must be carried out. ...
Document No.: KE-2015-00 1/34 Ⅰ. Construction and Design Features ...
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Document No.: KE-2015-00 2/34 I. Construction and Design Features 1. Construction and Design Features 1.1 D-type damper D-type damper has a metal disc and metal seat (hard chrome plating) to control the fluid flow. A clearance is provided between the internal diameter of the body and the external diameter of the disc so that it is suitable for flow regulation of high temperature fluids, powder-containing fluids (metal or sand) or slurry. It also can be used as a damper for hoppers. 1.2 A-type damper A-type damper has a slightly larger disc. The oval-shaped disc is designed to tilt and touch the body interior (hard chrome plating) when the damper is in the closed position. A-type damper can be used for the same purpose as D-type damper, but its leakage rate is lower. The rotation angle of the disc is between 73°and 78°when the damper is in the closed position. Note that A-type damper is not suitable for the flow control of powder-containing fluid. (1) Do not forcibly operate the damper with metal or sand clogged inside. Such use may damage the damper. Gland (C3604BE) Packing (PTFE impregnated asbestos packing) Stem (SUS403) Body (FC250+Hcr) ...
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Document No.: KE-2015-00 3/34 I. Construction and Design Features 2. Specifications 2.1 Maximum service pressure ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 0.49 MPa 2.2 Service temperature range ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 0℃ to +230℃ 2.3 Shell test (Hydraulic pressure) ・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 1.96 MPa 2.4 Allowable leakage 10A ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ Approx. 2 % of rated Cv value 10D ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ Approx. 3 % of rated CV value 2.5 Applicable flange JIS 5K/10K 2.6 Rotation angle 10A ...
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Document No.: KE-2015-00 4/34 I. Construction and Design Features 3.Flow Characteristics 3.1 A-type damper [Flow Characteristic Curve] [Pressure Loss] ...
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Document No.: KE-2015-00 5/34 I. Construction and Design Features 4. Size and Number of Piping Bolts and Nuts (Bolts and nuts used except for cast iron flanges) 4.1 Hexagon head bolt: Hexagon bolt & nut Flange JIS 5K JIS 10K Bolt Hexagon Head Bolt Hexagon Head Bolt Nominal Size Size L Number Size L Number 50 M12 90 4 M16 100 4 65 M12 100 4 M16 110 4 80 M16 110 4 M16 120 ...
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Document No.: KE-2015-00 6/34 I. Construction and Design Features 4.2 Stud bolt and nut (L=mm) Flange JIS 5K JIS 10K Bolt Stud Bolt Stud Bolt Nominal Size Size L Number Size L Number 50 M12 105 4 M16 120 4 65 M12 110 4 M16 125 4 80 M16 125 4 M16 130 ...
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Document No.: KE-2015-00 7/34 I. Construction and Design Features 5. Applicable Pipes When the damper is in the fully open position, the disc enters the pipe and the disc may contacts with the pipe. When the weld flange as shown below is used, select appropriate pipes. ● in the table below shows the applicability. Welding Welding Method A Welding Method B Method Schedule Schedule Pipe Type SGP SGP 20 40 20 40 2B ● ● ● ● ● ● 65 2-1/2 ● ● ● ● ● ● 80 3 ● ● ● ● ● ● 100 4 ● ● ● ● ● ● 125 5 ● ● ● ● ● ● 150 6 ● ● ● ● ● ● ...
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Document No.: KE-2015-00 9/34 II. Operating Device 1. Lever Handle Type Operator 1.1 A lever handle is directly mounted on the damper. 1.2 The damper can be in the open position or in the closed position by turning the lever handle by 90 degrees counterclockwise or clockwise respectively. Open Close Flow direction Flow direction ...
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Document No.: KE-2015-00 10/34 II. Operating Device 2. Gear Operator 2.1 A gear operator can be mounted on the damper. 2.2 Damper is operated by turning the handwheel according to the indication, such as an arrow or letters, namely rotating the handwheel clockwise to set the damper in the closed position or counterclockwise to set the damper in the open position. 2.3 Handwheel operating torques vary with a number of factors, such as the opening position, damper sizes and working pressures. 2.4 The gear operator is a device to transmit a large torque to the stem by converting the torque from the drive shaft by means of the reduction gearing unit. Open Close ...
Document No.: KE-2015-00 11/34 Ⅲ. Transportation and Storage ...
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Document No.: KE-2015-00 12/34 Ⅲ. Transportation and Storage 1. Transportation Precautions for transportation (1) Keep off the lifting work area to prevent personal injury due to collapsing or falling of cargo. (1) Take care not to damage the painted surfaces of the products during transportation. All damaged surfaces shall be properly repaired to prevent corrosion. (2) Take care when handling and storing carton-packaged products. High humidity may damage the cartons and products. 1.2 Transportation 1.2.1 Keep the products in their original packaging condition during transportation and until just before installation. 1.2.2 Do not give any extraordinary impact on the products by throwing, dropping, dragging, or toppling them down. ...
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Document No.: KE-2015-00 13/34 Ⅲ. Transportation and Storage 2. Storage 2.1 Precautions for storage (1) Do not store the products in a corrosive environment. It may cause corrosion on the threaded areas, leading to a malfunction of the product. (2) Do not place any objects on the products, or do not step on them. Overloading may damage the products. (3) Do not pile up the products for storage. Unstable piling may damage the products or cause personal injury. 2.2 Storage 2.2.1 Store the products in a dust-free, low humidity and well -ventilated indoor place. 2.2.2 Keep the products in their original packaging and place them on pallets or racks for storage. Storing products directly on the ground or concrete floor shall be avoided. ...
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Document No.: KE-2015-00 15/34 Ⅳ. Installation 1. Precautions for Installation (1) Check the specifications with the nameplate or the relevant catalogue before installation. Service pressure, fluid and temperature of the product are determined by its trim materials, etc. Use of the product beyond the specifications will lead to malfunctions of the product. (1) Ensure secure footing for installation and operation. (2) Provide adequate lighting for operation. (3) Pipes shall be supported as required. (4) Do not connect the damper directly with a check valve or a pump. It may damage the disc by unwanted contact with the connected device. 1.1 Allow sufficient room for operation, installation, disassembly and subsequent maintenance work with consideration for the damper size and the stem direction. 1.2 Take appropriate measures in a case when dampers are installed in a confined space. 1.3 Where possible, avoid installing the products in areas where external forces, such as vibrations, hamper the functions of the products. ...
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Document No.: KE-2015-00 16/34 Ⅳ. Installation 2. Precautions for Piping (1) After flanges are welded with pipes, wait until the welding heat cools down enough before installing a damper. (2) Appropriately chamfer or round the edge of the welded flanges to prevent the surfaces from being damaged. (3) Before installation, clean the connecting pipes and remove any foreign objects, such as sand, dust or welding spatters. (4) Make sure that the flange surfaces have no damage or defects. Remove any foreign objects from the flange surfaces. (5) Align the upstream side and the downstream side accurately. Leakage from flanged connections will be caused by inaccurate alignment. Support pipes for correct alignment. ...
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Document No.: KE-2015-00 17/34 Ⅳ. Installation 3. Installation Procedures 3.1 Set jack bolts, if needed, to adjust the space between the pipe flanges. The space between the pipe flanges should be 6 to 10 mm wider than the face-to-face dimension of the damper. 3.2 Place the damper between the flanges. And Damper temporarily set two bolts into the lower side of the Gasket pipe flanges and gaskets between the flanges. Then temporarily set two bolts into the upper side of the pipe flanges. 3.3 Temporarily tighten the four bolts and check that the Jack bolt damper is installed in the correct position. Bolt 3.4 Check that the disc does not contact with the flange when the damper is in the fully open position. 3.5 Attach all of the remaining bolts through the holes of pipe flanges and tighten them. 3.6 Tighten the bolts evenly and alternatively in a star pattern. 3.7 Bolts, nuts, and gaskets for piping are not supplied ...
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Document No.: KE-2015-00 19/34 Ⅴ.Operation 1. Precautions for Operation (1) Do not loosen bolts or nuts of the flanged area while the fluid is pressurized. (2) Do not remove the operating device while the fluid is pressurized. The stem may blow out. (3) When a pressure test (with pressure higher than the rated pressure) is performed on the pipeline, the damper should be in the fully open position. Do not use the damper as a blank flange when a pressure test is performed. (4) Do not carelessly touch the stopper bolt of the gear unit. (5) Do not excessively rotate the handwheel of the gear unit. (6) Avoid using any special tools such as a pipe or a wrench for operation of the handle or the handwheel. 2. Operation 2.1 Lever handle operation Damper can be set in the closed position by rotating the lever handle clockwise and in the open position by rotating the lever handle counterclockwise. 2.2 Gear operation Damper can be set in the closed position by rotating the handwheel clockwise according to the letters and the arrows indicating the direction, and in the open position by rotating the handwheel counterclockwise. ...
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Document No.: KE-2015-00 20/34 Ⅴ. Operation 3. Daily Inspections Perform daily maintenance and inspections on the damper in use. Inspection items are as shown below. Areas to be Inspection Problems Remedies inspected methods Visual check Retighten the gland. Gland area Soap water Replace the packing. External leakage Visual check Retighten the bolts. Pipe connections Soap water Replace the gasket. Visual check Damper surfaces Replace the damper. Soap water Damper body Consult a piping engineer. Auditory check Abnormal Loosened bolts Retighten the bolts. Auditory check noise ...
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Document No.: KE-2015-00 21/34 Ⅴ. Operation 4. Precautions for Troubleshooting (1) Wear protective gear such as goggles, gloves and working boots. (2) Take adequate safety measures against toxic, inflammables or corrosive fluid. (3) Reduce the line pressure to the atmospheric level before retightening flange bolts and nuts. 4.1 Leakage from flange areas Tighten the bolts evenly, gradually and alternatively in a star pattern as shown below. ...
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Document No.: KE-2015-00 23/34 Ⅵ. Periodic Inspection 1. Periodic Inspections 1.1 Perform periodic inspections on dampers in the as-installed condition at least once a year. 1.2 Check if dampers are operated smoothly and safely. 1.3 Inspection items and methods are the same as those for daily inspections. See Chapter V, 3. Daily Inspection of this manual for details. 1.4 Perform periodic inspections on dampers that are not inspected or not operated on a daily basis. (Periodic inspections shall be performed on all the dampers.) 1.5 Thorough checks are required for the dampers if: a) Operational failure of the damper could result in a shutdown of the entire plant unit. b) Fluids are highly viscous and may get stuck to and built up. c) Corrosion and/or wear by the fluids are likely to occur. Remove the damper from the pipeline for inspection if needed. ...
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Document No.: KE-2015-00 24/34 Ⅵ. Periodic Inspection 2. Maintenance and Inspection When inspections of the pipeline facilities are conducted, perform leakage tests and operation tests on the damper as required. If any defects are found, disassemble the damper for further inspection. The damper shall pass the required inspections before being sent back to the operation sites. 2.1 Precautions for removal and reinstallation of damper (1) Before removing damper from the pipe, discharge the fluid from the pipe and reduce the line pressure to the atmospheric level to prevent personal injury caused by a blowout of residual fluid. (2) When dampers handle a toxic, inflammable or corrosive fluid, or when such dampers are stored or disposed of, take adequate safety measures and keep the dampers separated. (3) Make sure to read through the relevant actuator operation manual when an electric or pneumatic actuator is installed on the damper. (4) Keep off the lifting work area to prevent personal injury due to collapsing or falling of cargo. (1) Wear protective gear such as goggles, gloves and working boots. (2) Ensure secure footing when removing and installing dampers. (3) Use support stands for the correct alignment of the upstream and downstream pipes. ...
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Document No.: KE-2015-00 25/34 Ⅵ. Periodic Inspection 2.3 Tests and inspections Perform the required tests and inspections. 2.3.1 Operation test (1) The damper should operate smoothly without galling or sticking. (2) The stem should be securely engaged with the disc. (3) When the damper is in the fully open position, the disc should be parallel to the fluid flow. 2.3.2 Shell tests (1) Precautions for shell test (1) Wear protective gear such as goggles, gloves and working boots. (2) Priority shall be given to safety when shell tests are performed. (2) Shell tests Inspected dampers shall be subject to the specified hydrostatic shell test at the designated test pressures. ...
Document No.: KE-2015-00 26/34 Ⅶ. Disassembly and Reassembly ...
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Document No.: KE-2015-00 27/34 Ⅶ. Disassembly and Reassembly 1. Disassembly Disc and stem of the damper cannot be replaced. When replacement of disc or stem is required, replace the damper itself. 1.1 Precautions for disassembly (1) Take protective measures to prevent direct exposure to the fluid and catching fire. (1) Wear protective gear such as goggles, gloves and working boots. (2) Be careful not to catch your fingers or hands during disassembly. (3) Use an appropriate lifting machine when handling a large size product. 1.2 Before disassembly 1.2.1 Perform disassembly in a dust-free area. ...
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Document No.: KE-2015-00 28/34 Ⅶ. Disassembly and Reassembly 1.3 Disassembly procedures 1.3.1 Damper with lever handle Place matchmarks on the handle (9), the index plate (98) and the damper to make the subsequent reassembly easier and to prevent misalignment. Remove the lever handle nut (10) and then remove the washer (16) and the handle (9). Remove the set bolt (99A), the nut (99B) and the spring washer (145), and then the indicator plate (98). 1.3.2 Damper with gear operator Place matchmarks on the gear unit and the damper to make the subsequent reassembly easier and to prevent misalignment. Remove the set bolt (99), and then remove the spring washer (145) and the gear unit (102). ...
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Document No.: KE-2015-00 29/34 Ⅶ. Disassembly and Reassembly 2. Reassembly 2.1 Precautions for reassembly (1) Wear protective gear such as goggles, gloves and working boots. (2) No open flame or smoking shall be allowed in the work area. (3) Be careful not to catch your fingers or hands during reassembly. (4) Use an appropriate lifting machine for safety when handling a large size product. 2.2 Before reassembly 2.2.1 Check the parts before reassembly. If any unsatisfactory conditions of the parts are found, replace the parts. 2.2.2 Clean the reuse parts and remove dust, oil and other foreign objects. 2.2.3 Perform reassembly in a dust-free area. 2.2.4 Take care not to damage the seal section of the disc. 2.2.5 Securely tighten each bolt and nut. ...
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Document No.: KE-2015-00 30/34 Ⅶ. Disassembly and Reassembly 2.3 Reassembly procedures 2.3.1 Damper with lever handle Install the indicator plate (98) with the set bolt (99A), the nut (99B) and the spring washer (145). Align the matchmarks on the handle, the indicator plate and the damper provided before disassembly and secure with the washer (16) and the lever handle nut (10). 2.3.2 Damper with gear operator Align the matchmarks on the gear unit and the damper provided before disassembly. Then, secure with the set bolt (99) and the spring washer (145). 2.4 Replacement of packing Follow the procedures below and replace the packing when leakage from the stem seal section is detected. Make sure to decrease the pipe pressure to the atmospheric pressure before replacement. 2.4.1 Dismount the operating device from the damper by following the procedures in 1.3 of this operation manual. 2.4.2 Remove the gland (7) and then scrape off the old gland packing (8) with a sharp-pointed stick. * Take care not to damage the packing seal surfaces of the body and the stem. 2.4.3 Select the packing with a thickness equal to or slightly larger than the half of the differential between the internal diameter of the stuffing box and the external diameter of the stem. 2.4.4 With a sharp knife, cut packing at an angle of 30 degrees with a length appropriate for the damper. Do not use short packing. 2.4.5 Fill the stuffing box half full with packing, and then press the packing into the stuffing box. Then fill the stuffing box with the remaining packing and secure them. Do not insert the packing all at once. Insert and secure the packing step by step to evenly install all the packing. 2.4.6 Cut lines of the installed packing should be displaced by 120°each other so that every fourth cut line comes to the same position. The cut lines should not be lined up in a row with each other ...
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Document No.: KE-2015-00 31/34 Ⅶ. Disassembly and Reassembly 3. Structural Drawing (Lever Handle Type: 10D) Parts No. Parts Name Parts No. Parts Name 1 Body 71 Disc bolt 3 Stem 98 Indicator ...
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Document No.: KE-2015-00 32/34 Ⅶ. Disassembly and Reassembly 4. Structural Drawing (Lever Handle Type: 10A) Parts No. Parts Name Parts No. Parts Name 1 Body 98 Indicator plate ...
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Document No.: KE-2015-00 33/34 Ⅶ. Disassembly and Reassembly 5. Structural Drawing (Gear Operator Type: GL-10D) A−A Parts No. Parts Name 1 Body 3 Stem 4 Disc 7 Gland 8 Gland packing 13 Disc nut 71 Disc bolt 99 Set bolt 102 Gear unit 103 Bottom stem 145 Spring washer This illustration shows a typical construction. Please refer to the approved drawing for assembly and disassembly. ...
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Document No.: KE-2015-00 34/34 Ⅶ. Disassembly and Reassembly 6. Structural Drawing (Gear operator type: GL-10A) A−A Parts No. Parts Name 1 Body 3 Stem 4 Disc 7 Gland 8 Gland packing 13 Disc nut 71 Disc bolt 99 Set bolt 102 Gear unit 103 Bottom stem 145 Spring washer This illustration shows a typical construction. Please refer to the approved drawing for assembly and disassembly. ...
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