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172-65254MA-04  (A-COS-10)    22  Apr  2020

 

8

 

Installation 

 

 

Install properly and DO NOT use this product outside the recommended 

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.

 

CAUTION 

 

 

 

Use hoisting equipment for heavy objects (weighing approximately 

20 kg (44 lb) or more). Failure to do so may result in back strain or other 

injury if the object should fall.

 

CAUTION 

 

 

Take measures to prevent people from coming into direct contact with 

product outlets. Failure to do so may result in burns or other injury from 

the discharge of fluids.

 

CAUTION 

 

 

 

Do not use excessive force when connecting threaded pipes to the 

product. Over-tightening may cause breakage leading to fluid 

discharge, which may cause burns or other injury.

 

CAUTION 

 

Installation, inspection, maintenance, repairs, disassembly, adjustment and valve 
opening/closing should be carried out only by trained maintenance personnel. 
 
1.  Blowdown 

Before installing the product, 
be sure to blow down all 
piping thoroughly. If this is 
not possible, perform a 
blowdown using the bypass 
valve.   

Blowdown is especially 
important for newly installed 
piping or after the system 
has been shut down for a 
long period of time. 
 

 

2.  Removing Seal and Cap 

Before installation, be sure to remove all protective seals and caps.

 

 

(Found in 3 locations, on the product inlet and outlets.) 

 

 

3.  Installation Angle 

Make sure the product is installed on horizontal piping, 
so that the arrow mark on the body matches the direction 
of air flow and the adjustment section faces up. 

 

Allowable inclination is 10 degrees in the fore-aft 
direction and 15 degrees in the plane perpendicular to 
the air flow line. 

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Содержание A-COS-10

Страница 1: ...172 65254MA 04 A COS 10 22 April 2020 Pressure Reducing Valve for Air A COS 10 Copyright 2020 by TLV CO LTD All rights reserved...

Страница 2: ...e instructions to be sure of using the product properly Using air in which matter such as condensate scale or types of oil is entrained can not only result in problems with the air using equipment and...

Страница 3: ...at of death or serious injury WARNING Indicates that there is a potential threat of death or serious injury CAUTION Indicates that there is a possibility of injury or equipment product damage WARNING...

Страница 4: ...ct in any way Failure to observe these precautions may result in damage to the product and burns or other injury due to malfunction or the discharge of fluids Do not use excessive force when connectin...

Страница 5: ...ccur Freezing may damage the product leading to fluid discharge which may cause burns or other injury CAUTION Refer to the product nameplate for detailed specifications Model Nominal Diameter Maximum...

Страница 6: ...lve opens the secondary pressure of the product changes from zero to the set pressure Passing through an area of the reducing ratio of less than 10 1 where adjustment is impossible chattering occurs m...

Страница 7: ...in have 750 mm 30 in or more Automated Valve A COS 30 d or more Automated Valve A COS Less than 30 d Maintain a straight piping run of 30 d or more when another pressure reducing valve is installed Tw...

Страница 8: ...Float 6 Float Cover 7 Trap Valve Seat 8 Separator Screen 9 Main Valve Seat 10 Main Valve 11 Piston 12 Cylinder 13 Pilot Screen 14 Pilot Screen Holder 15 Pilot Body 16 Pilot Valve 17 Pilot Valve Seat...

Страница 9: ...uct Over tightening may cause breakage leading to fluid discharge which may cause burns or other injury CAUTION Installation inspection maintenance repairs disassembly adjustment and valve opening clo...

Страница 10: ...ion connection is recommended for the trap outlet pipe Connect the outlet pipe to a condensate return line or extend it to a trench In the case of the latter make sure the end of the pipe is above the...

Страница 11: ...ure Gauge A COS Ball Valve Ball Valve Bypass Valve Straight run Piping Lengths d pipe diameter Upstream 10 d or more Downstream 15 d or more Ball Valve A COS Bypass Valve Bypass Valve Pressure Gauge P...

Страница 12: ...ines at both inlet and outlet Ball valves which will not retain condensate are recommended for inlet and outlet shut off valves The bypass pipe should be at least 1 2 of the size of the inlet primary...

Страница 13: ...located upstream and downstream of the product are completely closed 3 Remove the spanner cap loosen the locknut and turn the adjustment screw counterclockwise to reduce tension on the coil spring Lo...

Страница 14: ...ction and Maintenance Frequency Screens Separator and Pilot Disassemble and clean annually If there is substantial blockage install a strainer approximately 60 mesh ahead of the product Main Valve Mai...

Страница 15: ...ct the product once a year for preventive maintenance purposes It is especially important to perform an inspection immediately after the initial run of a new line or before or after equipment that is...

Страница 16: ...phragm Pilot Valve Seat Gasket Pilot Valve Pilot Valve Spring Gasket Pilot Body Notch Pilot Screen Pilot Screen Holder Gasket Plug Hex Bolt Disassembling the Piston Section Remove the pilot body after...

Страница 17: ...clogging of the screen At start up following shutdown for a long period always blow down the piston section of the body through the plug option Disassembling the Air Trap Section Loosen the trap cover...

Страница 18: ...p Valve Seat Cylinder Pilot Screen Separator Screen Main Valve Seat Pilot Valve Main Valve Pilot Valve Seat Main Valve Holder Adjustment Screw It is permissible to clean using water however cleaning w...

Страница 19: ...stening torque and the width across flats for the tools to be used are as follows Part A COS Connection Size Width Across Flats Tightening Torque mm in mm in N m lbf ft Spring Housing Bolt All 17 21 3...

Страница 20: ...r non specified conditions out of specification insufficient pressure or flow rate and clogs by dirt and scale To ensure performance for a long period of time it is recommended that the Acceptable Ope...

Страница 21: ...y Hunting or chattering occurs Occurs at low air demand It is being operated below the lower flow rate limit Check the volume of air supply replace with a smaller diameter valve Hunting never stops Th...

Страница 22: ...the piping Secure the piping No condensate is discharged The primary pressure exceeds the trap valve seat maximum working pressure Adjust primary pressure Water is inside the float Replace with a new...

Страница 23: ...oper installation use handling etc by other than TLV CO LTD authorized service representatives 2 Malfunctions due to dirt scale rust etc 3 Malfunctions due to improper disassembly and reassembly or in...

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