Related Manuals for ITT Engineered Valves CU27
Summary of Contents for ITT Engineered Valves CU27
- Page 1 Installation, Operation, and Maintenance Manual CU27 Uni-Directional and CB27 Bi-Directional Knife Gate Valve...
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Page 3: Table Of Contents
Table of Contents Table of Contents 1 Introduction and Safety ............................ 2 1.1 Safety message levels ..........................2 1.2 User health and safety ..........................2 2 Transportation and Storage..........................4 2.1 Handling and unpacking guidelines......................4 2.2 Storage, disposal, and return requirements ....................4 2.3 Lifting the valve ............................ -
Page 4: Introduction And Safety
1.2 User health and safety General precautions This product is designed and manufactured using good workmanship and materials, and meets all appli- cable industry standards. This product should be used only as recommended by ITT. WARNING: • Misapplication of the valve can result in injury or property damage. Select valves and valve components of the proper materials and make sure that they are consistent with your specific performance requirements. - Page 5 • Ensure that the contents of the operating instructions have been fully understood by the personnel. Instruction and training can be carried out by either ITT or the reseller of the valve by order of the operat- ing company Non-compliance risks Failure to comply with all safety precautions can result in the following conditions: •...
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Page 6: Transportation And Storage
Store in accordance with the short-term action items. months • Store in accordance with ITT's Long Term Storage Procedure. Contact ITT to obtain this procedure. Storage of rubber components As rubbers possess varying degrees of resistance to deteriorating influences which may be present dur- ing storage, they should be stored in a cool, dry, dark place away from sunlight, extreme weather etc. -
Page 7: Lifting The Valve
2.3 Lifting the valve The shelf life for different rubbers as mentioned in below is guideline data and is not substitute for exami- nation of cured material at the time of intended use. Aflas: 4 years Natural Rubber: 2 Years EPDM / NBR: 4 Years Disposal Dispose of this product and associated components in compliance with federal, state, and local regula-... - Page 8 2.3 Lifting the valve Loop the lifting scrap under the support plate for handwheel operated and bevel gear operated valves by ensuring the lifting straps do not tighten against any part of the valve. For the cylinder operated valves it is advised to lift the valves using the two opposite tie rods located above the bottom plates by using lifting eyes.
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Page 9: Product Description
3 Product Description 3 Product Description 3.1 CU27 uni-directional valve 3.1.1 General description The CU27 is a uni-directional knife gate valve whereas the line pressure assists the closing of the valve by pushing the gate against the integral metal seat in the body. The valve has a range of application in Pulp and Paper, Water and Wastewater, and General Industry. -
Page 10: General Diagram
3.1 CU27 uni-directional valve 3.1.2 General diagram Lock Nut Hand Wheel Thrust Washer Stem Nut Parallel Key Thrust Washer Support Plate Stem Gland Gate Gland Packing Seat Retainer Ring Body Seat Figure 1: CU27 CU27 Uni-Directional and CB27 Bi-Directional Knife Gate Valve Installation, Operation, and Maintenance Manual... -
Page 11: Cb27 Bi-Directional Valve
3.2 CB27 bi-directional valve 3.2 CB27 bi-directional valve 3.2.1 General description The CB27 is a bi-directional knife gate valve using a perimeter seating design with single-piece design for sizes 2" to 20" (DN50 to DN500) and two-piece design for sizes above 20" (> DN500). The perimeter seat design provides bi-directional shut off regardless of line pressure. -
Page 12: General Diagram
3.2 CB27 bi-directional valve 3.2.2 General diagram Hand Wheel Support Plate Stem Thrust Washer Stem Nut Parallel Key Thrust Washer Gate Gland Gland Packing Seat Scrapper Body Figure 2: CB27 CU27 Uni-Directional and CB27 Bi-Directional Knife Gate Valve Installation, Operation, and Maintenance Manual... -
Page 13: Installation
Air cylinders, when provided, are sized for a specified input pressure. Excessive pressure could result in serious personal injury or may cause damage to the valve and cylinder. Air regulators and air filters are available from ITT or your authorized ITT distributor. •... -
Page 14: Installing The Valve
4.2 Installing the valve Table 3: Recommended fasteners and torques for CB27 Tapped Max Depth Holes tapped holes Face Bolt No.of Max allowa- in chest Valve Flange Circle Holes valve Thru Tapped Fastener ble fastener Size Face (each side) chest Holes Thread Size (Fig 1) -
Page 15: Piping Installation
(pneumatic, electric, etc.), or with the valve installed horizontally or at an an- gle on a horizontal pipeline, the installation will require the construction of suitable supports. See Figure below and consult the technical department at ITT. * For these positions please consult ITT Engineered Valves. - Page 16 4.3 Piping Installation Installation Check Once the valve is installed, verify that the flanges have been fastened correctly and that all electrical and / or pneumatic connections have been properly made. Where electric accessories are mounted on the valve (i.e. solenoid valves, limit switches, positioners, etc.) the corresponding grounding connections must be made before it is put into operation.
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Page 17: Operation
5 Operation 5 Operation 5.1 Range of operators Hand Wheel To open the valve, turn the hand wheel counterclockwise. To close the valve, turn the hand wheel clock- wise. See general assembly drawing for more details. Bevel Gear The bevel gear is designed for full force below 30Kg. To open the valve, turn the hand wheel counter- clockwise. -
Page 18: Maintenance
/ dust that may be present. Seat life can be improved if the valve gate is wiped clean occasionally. Failure to use ITT recommended type of lubricant will considerably reduce the life of the valve. Under no circumstances should a hydro- carbon based lubricant be used. -
Page 19: Repack The Stuffing Box
6.4 Repack the stuffing box • Dow 111 (Dow corning) • Dow 44 (Dow corning) • Compound G661 (GE) • Rhodorsil 111 (Rhone-Polenc) • Sil Glyde (AGS Company) • Dow 7 (Dow corning) • Complex 821 (NFO) 6.4 Repack the stuffing box De-pressurize the system and place the valve in the closed position. - Page 20 Visit our website for the latest version of this document and more information: www.engvalves.com Engineered Valves 1110 Bankhead Ave. Amory, MS 38821 Form CU27_CB27.en-us.2023-07 ©2023 ITT Corporation The original instruction is in English. All non-English instructions are translations of the original instruction.
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