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172-65191MA-03 (RT3A)    28 Apr 2009

 

8

Disassembly / Reassembly

 

 

 

When disassembling or removing the product, wait until the 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.

 

CAUTION 

 

Use the following procedures to remove components. Use the same procedures in 
reverse to reassemble. (Installation, inspection, maintenance, repairs, adjustment and 
valve opening/closing should be carried out only by trained maintenance personnel.) 

 

Dissassembly / Reassembly Procedure 

 

Part 

During Disassembly 

During Reassembly 

Union Nut 

If removing the trap from the piping, first 
remove the union nut with a wrench 

— 

Union Nipple 

Remove from piping only if necessary

— 

Union Gasket 

— 

Replace with a new gasket if warped or 
damaged 

Cover 

Remove the cover from the body using a 
wrench (do not disassemble the cover 
itself) 

Consult the table of tightening torques 
and tighten to the proper torque 

Cover Gasket 

— 

Replace with a new gasket if warped or 
damaged 

Thermo-element  Remove from the body being careful not 

to bend the push-pin 

Replace with a new thermo-element if 
damaged or leaking wax 

Element Guide 
(Valve) 

Remove from the body being careful not 
to scratch the valve seating surface 

Insert into body being careful not to 
scratch the valve surface 

Return Spring 

Remove from the body 

Place inside body 

Valve Seat 

Remove from the body using a box 
wrench being careful not to scratch seat 
surface 

Insert being careful not to scratch seat 
surface; consult the table of tightening 
torques and tighten to the proper torque

Valve Seat 
Gasket 

— 

Replace with a new gasket if warped or 
damaged 

 
 

Torque Tightening Table

 

 

Connection Size 

Torque 

Distance Across Flats 

Part 

mm (in) N·m 

(lbf·ft) 

mm (in) 

15 (

1

/

2

) —  32 

(1

1

/

4

Union Nut 

20 (

3

/

4

) —  38 

(1

1

/

2

15 (

1

/

2

) —  19 

(

3

/

4

Union Nipple 

20 (

3

/

4

) —  24 

(

15

/

16

Cover 15, 

20 

1

/

2

,

 

3

/

4

 40 (29) 24 (

15

/

16

Valve Seat 

15, 20 

1

/

2

,

 

3

/

4

 15 (11) 12 (

15

/

32

1 N

 10 kg

cm

 

 

 

Minimum Maintenance Space 
Required for Disassembly 

(3

1

/

8

”)

 

Содержание RT3A

Страница 1: ...172 65191MA 03 RT3A 28 April 2009 Radiator Trap RT3A Copyright 2009 by TLV CO LTD All rights reserved ISO 9001 ISO 14001 Manufacturer Kakogawa Japan is approved by LRQA LTD to ISO 9001 14001 ...

Страница 2: ...ordinary Also be sure to read this manual carefully before use and follow the instructions to be sure of using the product properly The RT3A radiator trap is used in buildings such as schools hotels hospitals and offices to discharge only low temperature condensate generated in steam using equipment used for space heating If detailed instructions for special order specifications or options not con...

Страница 3: ...es that there is a potential threat of death or serious injury CAUTION Indicates that there is a possibility of injury or equipment product damage CAUTION 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 that may lead to serious accident...

Страница 4: ...rge which may cause burns or other injury Use only under conditions in which no freeze up will occur Freezing may damage the product leading to fluid discharge which may cause burns or other injury Use only under conditions in which no water hammer will occur The impact of water hammer may damage the product leading to fluid discharge which may cause burns or other injury ...

Страница 5: ...ew bends as possible and installed so the liquid will flow naturally down into the trap Operation Principles of Steam and Condensate Discharge 1 At start up temperatures are low so the thermo element A is contracted holding the valve open and allowing the rapid discharge of initial air and condensate 2 After the discharge of initial condensate the temperature of the condensate rises When it reache...

Страница 6: ...lowable Temperature TMA Weight mm in MPaG psig C F MPaG psig C F kg lb 15 1 2 0 6 1 3 RT3A 20 3 4 0 3 45 144 292 0 3 45 144 292 0 7 1 5 NOTE The RT3A has a set condensate discharge temperature Approximately 95 100 C 203 212 F 1 MPa 10 197 kg cm 2 Maximum allowable pressure PMA and maximum allowable temperature TMA are PRESSURE SHELL DESIGN CONDITIONS NOT OPERATING CONDITIONS NOTE Specifications fo...

Страница 7: ...e 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 Before installation be sure to remove all protective seals 2 Before installing the product open the inlet valve and blow out the piping to remove any piping scra...

Страница 8: ...with a small amount of flash steam The trap usually operates intermittently or with continuous dripping Blocked Discharge Impossible No condensate is discharged The surface temperature of the trap is low Blowing Live steam continually flows from the outlet and there is a continuous hissing sound of flow Steam Leakage Live steam is discharged through the trap outlet together with condensate accompa...

Страница 9: ...a wrench do not disassemble the cover itself Consult the table of tightening torques and tighten to the proper torque Cover Gasket Replace with a new gasket if warped or damaged Thermo element Remove from the body being careful not to bend the push pin Replace with a new thermo element if damaged or leaking wax Element Guide Valve Remove from the body being careful not to scratch the valve seating...

Страница 10: ...ient Compare specifications and actual operating conditions No condensate is discharged or discharge is poor Steam locking has occurred Study and correct the piping The thermo element is leaking wax Replace with a new thermo element There is a build up of sticky scale between the element guide and the body Clean the element guide and the inside of the body The valve and or valve seat is worn Repla...

Страница 11: ...per 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 inadequate inspection and maintenance by other than TLV CO LTD authorized service representatives 4 Malfunctions due to disasters or forces of nature 5 Accidents or malfunctions due to any other cause be...

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