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Summary of Contents for TLV COSPECT PN-COS-16
- Page 1 172-65588MA-02 (PN-COS Pneumatic Control Valve) 5 September 2014 ISO 9001/ ISO 14001 Manufacturer Kakogawa, Japan is approved by LRQA LTD. to ISO 9001/14001 Pneumatic Control Valve for Steam COSPECT PN-COS-16 Copyright © 2014 by TLV CO., LTD. All rights reserved...
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Page 2: Table Of Contents
Contents Introduction ................ 1 Safety Considerations ............2 Specifications ..............4 Acceptable Operating Range ..........4 Correct Usage of the PN-COS-16........5 Configuration..............7 Installation ................8 Operation ................. 14 Maintenance..............17 Disassembly..............18 Reassembly ..............22 Troubleshooting ............... 23 Product Warranty ............. -
Page 3: Safety Considerations
The three types of cautionary items above are very important for safety: be sure to observe all of them as they relate to installation, use, maintenance and repair. Furthermore, TLV accepts no responsibility for any accidents or damage occurring as a result of failure to observe these precautions. - Page 4 When disassembling or removing the product, wait until the CAUTION internal pressure equals atmospheric pressure and the surface of the product has cooled to room temperature. Disassembling or removing the product when it is hot or under pressure may lead to discharge of fluids, causing burns, other injuries or damage.
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Page 5: Specifications
Specifications Install properly and DO NOT use this product outside the recommended CAUTION operating pressure, temperature and other specification ranges. Improper use may result in such hazards as damage to the product or malfunctions which may lead to serious accidents. Local regulations may restrict the use of this product to below the conditions quoted. -
Page 6: Correct Usage Of The Pn-Cos-16
Correct Usage of the PN-COS-16 Install properly and DO NOT use this product outside the recommended CAUTION operating pressure, temperature and other specification ranges. Improper use may result in such hazards as damage to the product or malfunctions which may lead to serious accidents. Local regulations may restrict the use of this product to below the conditions quoted. - Page 7 4. Precautions for the Installation of Additional Fittings Before or After the PN-COS-16 In order to ensure stable steam flow, the piping upstream and downstream of the PN-COS-16 must be straight runs. If the PN-COS-16 is installed either directly before or after an elbow or control valve, unevenness in steam flow may result in chattering and unstable pressure.
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Page 8: Configuration
Configuration Name 15 – 50 mm ( – 2 in) Main Body Trap Body Trap Cover Separator Float Float Cover Guide Pin Trap Valve Seat Trap Valve Seat Gasket Gasket (Trap Body/Trap Cover) Wave Spring Gasket (Main Body/Trap Body) Separator Screen Main Valve Seat Main Valve Seat Gasket 8 mm (... -
Page 9: Installation
Installation Install properly and DO NOT use this product outside the recommended CAUTION operating pressure, temperature and other specification ranges. Improper use may result in such hazards as damage to the product or malfunctions which may lead to serious accidents. Local regulations may restrict the use of this product to below the conditions quoted. - Page 10 4. Spacer Installation If spacing adjustment is Correct spacer necessary to accommodate location installation, install a spacer on the outlet flange. The spacer should consist of a spacer, gaskets, bolts and nuts. Incorrect spacer Fit gaskets to both sides of the location spacer between the PN-COS- 16 outlet and the pipe flange.
- Page 11 Pressure Pressure Sensor Installation (for PN-COS Pressure Sensor pressure control) Gauge The length of piping between the PN-COS-16 and the pressure sensor should be no more than 5 m Straight Straight pipe pipe (17 ft). If the piping distance is too >...
- Page 12 11. Two-stage Pressure Reduction Whenever the pressure cannot be reduced to the desired level with a single PN- COS-16 due to operating range limitations, such as when the reduction ratio is greater than 10:1, the pressure reducing valve should be installed at the primary side.
- Page 13 sensing channel under the operational pressure reduction ratio of 2:1 or more. Installation procedure 1) Loosen and remove the bolts that attach the pilot body to the main body and remove the pilot body. 2) Install the blind pin (optional) by first removing the connecting tube from the main body or pilot cover and then substituting the blind pin.
- Page 14 All models except North American models are factory prepared for internal sensing. When internal pressure sensing is required for North American models, please contact the nearest TLV representative to request both a connecting tube, which must be installed in place of the blind pin, and a threaded secondary pressure sensing plug.
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Page 15: Operation
Operation When using this product, NEVER stand close to, or leave tools anywhere near moving parts, such as the shaft. Contact with moving parts or objects CAUTION becoming caught in moving parts could lead to injury or damage or other accidents. - Page 16 Manual Control <Example: Manual remote operation (as pressure reducing valve)> PN-COS-16 Regulator (installed in a (with relief) high position) When operating the PN-COS-16 remotely by manual operation, an air regulator (with relief function) that adjusts motive air pressure is required. Adjust the set pressure with the air regulator while checking the pressure gauge on the secondary side.
- Page 17 <Adjustment> 1. It is necessary to blow down all pipe lines thoroughly. The blowdown is especially important if the line is new or has been shut down for a long period of time. Take particular care to ensure that matter such as condensate and dirt does not remain inside the steam-using equipment.
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Page 18: Maintenance
Maintenance Take measures to prevent people from coming into direct contact with CAUTION product outlets. Failure to do so may result in burns or other injury from the discharge of fluids. Be sure to use only the recommended components when repairing the CAUTION product, and NEVER attempt to modify the product in any way. -
Page 19: Disassembly
Disassembly NEVER apply direct heat to the float. The float may explode due to WARNING increased internal pressure, causing accidents leading to serious injury or damage to property and equipment. Use hoisting equipment for heavy objects (weighing approximately CAUTION 20 kg (44 lb) or more). Failure to do so may result in back strain or other injury if the object should fall. - Page 20 Disassembling the Pilot Section The diaphragm is removed by utilizing the notch in the pilot body. Loosen the pilot valve seat with a box wrench and remove it. Lift the pilot valve spring up and out with a pair of tweezers.
- Page 21 Disassembling the Separator / Main Valve Section Turn the PN-COS-16 upside down for easy dismantling of the separator and main valve. Loosen the hex bolts and remove the trap body. Be careful, as the separator may drop off when the PN-COS-16 is returned to the normal attitude. Removal of the separator and pressed-in sleeve permits removal of the main valve, main valve holder, main valve spring and separator screen.
- Page 22 Cleaning After inspection and removal of any abnormality, clean and reassemble the parts. The following parts will require cleaning before reassembly: Trap Cover Piston Float Piston Ring Trap Valve Seat Cylinder Pilot Screen Separator Screen Main Valve Seat Pilot Valve Main Valve Pilot Valve Seat Main Valve Holder...
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Page 23: Reassembly
Reassembly Assemble the unit using the same procedure as used for disassebling it; but in reverse order. Observe the following precautions: 1. The PTFE gaskets may be re-used if free from fault, crushing or deformation. 2. Apply anti-seize to the threaded portion of screws and bolts and adjustment screw. Apply a small amount of anti-seize to the threads of the main valve seat, pilot valve seat and screen holder to ensure it does not come into contact with other parts. -
Page 24: Troubleshooting
Troubleshooting NEVER apply direct heat to the float. The float may explode due to WARNING increased internal pressure, causing accidents leading to serious injury or damage to property and equipment. When disassembling or removing the product, wait until the internal CAUTION pressure equals atmospheric pressure and the surface of the product has cooled to room temperature. - Page 25 Problem Symptom Cause Remedy The secondary Adjustment is The piston rings are worn Replace with new piston pressure difficult, and set rings cannot be pressure varies The small hole in the Clean adjusted or piston is clogged increases There is a build-up of dirt Clean abnormally on the sliding surfaces of...
- Page 26 Problem Symptom Cause Remedy Abnormal noises Makes a high- There is too high a Use two-stage reduction pitched noise reduction ratio, the flow is Check the flow rate, use too great, or there is a a larger size high-speed open/close Install the valve as far valve nearby away as possible...
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Page 27: Product Warranty
One year following product delivery. 2. Warranty Coverage TLV CO., LTD. warrants this product to the original purchaser to be free from defective materials and workmanship. Under this warranty, the product will be repaired or replaced at our option, without charge for parts or labor.
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