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Document No.: KE-2032-01
SGE Type Butterfly Valves
Thank you for choosing KITZ products.
For safe and trouble-free function and performance of the product, make sure
to read and understand all of the items included in this manual before valve
mounting and operation. Keep this manual in a convenient place and accessible
to the valve operating personnel.
Operation Manual
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Summary of Contents for Kitz SGE
- Page 1 Document No.: KE-2032-01 Operation Manual For SGE Type Butterfly Valves Thank you for choosing KITZ products. For safe and trouble-free function and performance of the product, make sure to read and understand all of the items included in this manual before valve mounting and operation. Keep this manual in a convenient place and accessible to the valve operating personnel. ...
- Page 2 Document No.: KE-2032-01 This manual applies to the KITZ SGE type butterfly valves. For electric or pneumatic valve operation, refer to the operation manual prepared by the manufactures of the relevant valve actuators. SAFETY CAUTIONS For the safe use of the product, read all of the 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 ...
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Page 3: Table Of Contents
Document No.: KE-2032-01 Contents I. Construction and Design Features 1. Construction and Function ･･････････････････････････････････2 2. Product Coding ････････････････････････････････････････････3 3. Design Features････････････････････････････････････････････3 4. Specifications ･･････････････････････････････････････････････4 5. Piping Couplings････････････････････････････････････････････4 II. Transportation and Storage 1. Precautions ････････････････････････････････････････････････6 2. Transportation ･････････････････････････････････････････････7 3. Storage････････････････････････････････････････････････････7 III. Valve Installation 1. Precautions ････････････････････････････････････････････････9 2. Before Installation ･･････････････････････････････････････････10 IV. Valve Operation ... -
Page 4: Construction And Design Features
Document No.: KE-2032-01 1/18 I. Construction and Design Features ... -
Page 5: Construction And Function ･･････････････････････････････････2
Disc （DUCTILE IRON+EPDM/NBR） Stem （SUS410 /SUS420J2Q） Bottom stem （SUS420J2Q） Bearing （METAL BACKED PTFE） End plate Body （CARBON STEEL） （DUCTILE IRON+NYLON） Disc （DUCTILE IRON+EPDM/NBR） Bottom stem （SUS410/SUS420J2） Plug （ZDC2） * Cavitation may occur if the valve is used with the slightly open position. Contact KITZ if the valve is required to be used in the slightly open position. ... -
Page 6: Product Coding ････････････････････････････････････････････3
Document No.: KE-2032-01 3/18 I. Construction and Design Features 2. Product Coding S G E Ｇ 3 0 0 1 0 0 N o m in a l s iz e (m m ) S e a t m a te ria l C E : C h lo rin e re s is ta n t E P D M N : ... -
Page 7: Specifications ･･････････････････････････････････････････････4
Document No.: KE-2032-01 4/18 I. Construction and Design Features 4. Specifications 4.1 Maximum service pressure ： 2.1 MPa (300 psi) 4.2 Temperature range of service fluid EPDM Seat ： -20℃ to ＋110℃ (Continuous service temperature range ： 0℃ to ＋100℃) NBR Seat ： 0℃ to ＋70℃ 4.3 Pressure ‐Temperature rating P ressure-T em perature R ating P re ssu re ... -
Page 8: Transportation And Storage
Document No.: KE-2032-01 5/18 II. Transportation and Storage ... -
Page 9: Precautions ････････････････････････････････････････････････6
Document No.: KE-2032-01 6/18 II. Transportation and Storage 1. Precautions (1) Do not come close to the valve lifting area. (2) Use a hanging bolt or hold the valve neck section securely for lifting. Using the lever handle or handwheel for lifting may damage the product by falling down. (3) Do not give any impact to the valve by dropping, throwing or dragging. (4) Do not pile up valves for storage. Unstable piling may damage the valves or cause personal injury. (5) Do not store the valve with the carton box kept open. The valve function may be impaired due to the intrusion of foreign objects. (6) Do not expose packaged valves to rainwater, etc. High humidity may deteriorate the package. (7) Store valves in a dry and well-ventilated indoor place. ... -
Page 10: Transportation ･････････････････････････････････････････････7
Document No.: KE-2032-01 7/18 II. Transportation and Storage 2. Transportation 2.1 Keep valves in the original packages during transportation and until just before installation. 2.2 High humidity may damage the strength of carton cases. Care shall be taken when handling such deteriorated carton cases. 2.3 Take care not to damage painted valve surfaces during transportation. Repair the damaged surface to prevent corrosion. 3. Storage 3.1 Place the packaged valves on the pallet, etc., for storage. Placing packaged valves directly on the ground or concrete floor must be avoided. 3.2 Do not store valves in a corrosive environment. It may cause corrosion on the threaded areas, leading to a malfunction of valve. 3.3 Do not place any objects on valves, or do not step on them. Overloading may damage the valve. ... -
Page 11: Valve Installation
Document No.: KE-2032-01 8/18 III. Valve Installation ... -
Page 12: Precautions ････････････････････････････････････････････････9
III. Valve Installation 1. Precautions (1) Check the valve specifications with the identification plate or the tag as well as the relevant product catalog and ensure that the exact valve specified in the piping arrangement plan is provided. The service fluid, pressure, temperature, etc., determine the compatibility of the disc and seat materials. Incorrect application of valve could cause accidents such as internal leakage. (2) Do not attach butterfly valves directly to check valves or pumps. Contact of the disc of the butterfly valve during operation may damage the valve. (3) Do not install the valve close to the downstream side of an elbow pipe, a reducer, a flow-regulation valve because the flow rate of these devices may quickly change. Contact KITZ if such installation is required. (4) When installing the valve to the outlet of a pumping system, align the operator position as shown below. Incorrect orientation may damage the valve due to the differential of the flow rate in the pipes. Vortex flow pump Pump shaft Vortex pump Horizontal axis Vortex pump Longitudinal axis Pump shaft Pump shaft (5) Where the piping system turns, ensure to mount the valve as shown below. Please contact KITZ for details. ... -
Page 13: Before Installation ･･････････････････････････････････････････10
Document No.: KE-2032-01 10/18 III. Valve Installation (7) Install or remove the valve with the disc properly positioned within the face-to-face dimension. If the valve is installed or removed when the valve is in the open position, sealing section of the disc may be damaged resulting in leakage. (8) When performing a pressure test with pressure higher than its maximum allowable service pressure, the valve shall be in the fully open position. If a pressure test is performed with the valve in the fully closed position, the valve may be damaged. 2. Before Installation 2.1 Allow sufficient room for operation, installation, disassembly and subsequent maintenance work with consideration for the valve size and the stem direction. 2.2 Take appropriate measures for valves which are required to be installed in a confined space. 2.3 Keep a secure footing when removing and installing valves. 2.4 Provide adequate lighting for valve operation. 2.5 Provide appropriate piping supports to avoid excessive load on the pipes. 2.6 Do not install valves where vibration or other forces may hamper the valve function. ... -
Page 14: Valve Operation
Document No.: KE-2032-01 11/18 IV. Valve Operation ... -
Page 15: Precautions ････････････････････････････････････････････････12
Document No.: KE-2032-01 12/18 IV. Valve Operation 1. Precautions (1) Do not loosen the bolts on the piping section and the operating section while the valve is under operation and pressurized. Otherwise, it may cause an accident resulting in injury or death. (2) If an actuator is mounted on the valve, make sure to thoroughly read the instruction manual of the actuator before operating the valve. (3) Do not touch the stopper bolt on the gear operator carelessly. Positional displacement of the valve closed position may cause seat leakage. (4) When using the valve in the slightly open position, it may cause cavitation resulting in vibration, noise or valve damage. Contact KITZ for technical advice. (5) Valves equipped with manual operator such as a lever handle, or a handwheel must be manually operated. Application of an excessive force may result in malfunction of the valve and the manual operator. (6) Wear protective gear such as goggles, gloves and safety footwear when performing operations. (7) Take safety measures against toxic, flammable or corrosive fluids. ... -
Page 16: Lever Handle Type ･････････････････････････････････････････13
Document No.: KE-2032-01 13/18 IV. Valve Operation 2. Lever Handle Type Operate the lever handle after releasing the clutch by gripping the stop lever. Operate the lever handle clockwise to close the valve and counterclockwise to open the valve as shown below. When fully closed or fully open operation is required, turn the lever handle with the stop lever gripped until the lever handle contact with the index plate. The maximum operating angle of the lever handle from the fully open position to the fully closed position is 90 degrees. Make sure that the clutch on the stop lever is properly hooked in the groove on the index plate. [Open] 90° [Close] Index plate Flow direction Lever handle ... -
Page 17: Gear Type ･････････････････････････････････････････････････14
Document No.: KE-2032-01 14/18 IV. Valve Operation 3. Gear Type The valve is operated by turning the handwheel according to the indication, such as an arrow or letters, namely rotating the handwheel clockwise to close or counterclockwise to open the valve. Note) 1. The gear operator is a device to transfer a large torque to the valve stem by converting the torque from the drive shaft by means of the speed reduction gearing mechanism. 2. The handwheel operating torques vary with a number of factors, such as the valve opening position, valve sizes and working pressures. Open Close ... -
Page 18: Daily Inspection ････････････････････････････････････････････15
Document No.: KE-2032-01 15/18 IV. Valve Operation 4. Daily Inspection Carry out daily maintenance and inspections on the valves in use. Inspection items are as shown below. Inspection Problems Areas to be inspected Remedies method Visual check Pipe connections Retighten the bolts and nuts. Soap water External leakage Visual check Valve surface Replace the valve. Soap water Valve body Auditory check Consult a piping engineer. Bolted sections Abnormal noise Auditory check Retighten the bolts and nuts. (looseness) Pipes (vibration) Auditory check Consult a piping engineer. Loosening of bolts Visual check Bolted sections Retighten the bolts and nuts. and nuts ... -
Page 19: Periodic Inspection
Document No.: KE-2032-01 16/18 V. Periodic Inspection ... -
Page 20: Precautions ････････････････････････････････････････････････17
Document No.: KE-2032-01 17/18 V. Periodic Inspection 1. Precautions (1) Do not loosen the bolts on the piping section and the operating section while the valve is under operation and pressurized. Otherwise, it may cause an accident resulting in injury or death. (2) Do not touch the dismounted valve used for toxic or explosive fluid service. Adequate safety measures shall be taken when dismounting and disassembling valves. Safety measures shall be also taken when storing or disposing of valves used for toxic or explosive fluid service. They shall be kept away from unauthorized personnel. (3) Keep off the valve lifting area to prevent personal injury when transporting valves. (4) Carry out periodic inspections on the valves in operation by referring to the appropriate section in the operation manual. (5) Wear protective gear such as goggles, gloves and safety footwear. (6) Keep a secure footing when removing and installing valves. (7) When dismounting or mounting the valve, use appropriate piping supports to avoid displacement of the pipes. ... -
Page 21: Inspections ････････････････････････････････････････････････18
Document No.: KE-2032-01 18/18 V. Periodic Inspection 2. Inspections 2.1 Conduct periodic inspections with the valve installed in the pipeline at least once a year. 2.2 Check if the valves are operated smoothly and safely. 2.3 The inspection items and methods are the same as those for daily inspections. See “4. Daily Inspection” in Chapter IV of this manual for details. 2.4 Conduct periodic inspections on the valves that are not inspected or not operated on a daily basis. (Periodic inspections shall be carried out on all the valves.) 2.5 Thorough checks are required for the valves if: 1) Operational failure of the valve could result in a major shutdown of the entire plant unit. 2) Fluids are highly viscous and may get stuck and built up inside the valve. 3) Corrosion and/or wear by the fluids are likely to occur. 2.6 After maintenance work or inspection of the pipeline facilities where the valve is installed is conducted, perform a valve seat leakage test and an operation test, if required. 2.7 Check the following when performing valve operation tests. 1) The valve is operated smoothly by the lever handle or the handwheel without galling or sticking. 2) The stem is firmly connected with the disc. 3) In the fully open position, the disc is parallel to the fluid flow. 2.8 Valve body pressure tests and seat leakage tests shall be performed referring to 4.3 Pressure-Temperature rating in Section I and in accordance with the applicable standards such as MSS SP-67. ...
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