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BT3N/MBT3N/PBT3N: Disassembly/Reassembly of Bypass Valve Section

Part During

Disassembly During

Reassembly During

Inspection

Bushing

(only sizes

for 15 & 20

mm)

Remove with a wrench:

dist. across flats - 38 mm

Wrap 3-3.5 turns of sealing

tape around threads and

tighten to the proper torque:

torque - 100 N·m

dist. across flats - 38 mm

—

Valve

Holder

Remove with a hex key:

dist. across flats - 10 mm

Coat threads with anti-seize,

then tighten to the proper

torque:

torque - 40 N·m

dist. across flats - 10 mm

—

O-ring

(Outlet

Valve Seat)

Remove the o-ring

Replace with a new o-ring,

insert into the outlet valve

seat

—

Outlet

Valve Seat

Remove the outlet valve

seat

Replace with a new outlet

valve seat

—

Ball

Remove the ball

Reinsert the ball

Check sealing

surfaces for

scratches, wear, etc.

Inlet Valve

Seat

Remove the inlet valve

seat

Replace with a new inlet

valve seat

—

O-ring

(Inlet Valve

Seat)

Remove the o-ring

Replace with a new o-ring,

insert into the inlet valve seat

—

Washer

Remove the washer

Reinsert the washer

Check for damage,

deformation, etc.

Disc

Spring

Remove the disc spring

Reinsert with the proper

orientation (refer to the fig.

below)

Check for damage,

deformation, etc.

Washer

Remove the washer

Reinsert the washer

Check for damage,

deformation, etc.

Disc

Spring

Remove the disc spring

Reinsert with the proper

orientation (refer to the fig.

below)

Check for damage,

deformation, etc.

Washer

Remove the washer

Reinsert the washer

Check for damage,

deformation, etc.

Screen

Remove the screen

Reinsert the screen

Check for clogging,

corrosion, damage, etc.

(1 N·m

≈

10 kg·cm)

NOTE: Clean, then check the inside of the body for scratches and erosion.

Disc

Spring

Valve Holder

Washer: 3 pcs

O-Ring (Outlet Valve Seat)

Outlet Valve Seat

Screen

Inlet Valve Seat

Disc Spring: 2 pcs

Ball

Disc Spring & Washer:
Insertion order and orientation
of the disc spring

O-Ring (Inlet Valve Seat)

Bushing
(only sizes for 15 & 20 mm)

Inlet Valve Seat

Washer

172-65162M-03 (BT3N/MBT3N/PBT3N) 5 Jul 2013

Содержание BT3N

Страница 1: ...2 65162M 03 BT3N MBT3N PBT3N 5 July 2013 Manufacturer Kakogawa Japan is approved by LRQA LTD to ISO 9001 14001 Bypass Blowdown Steam Trap BT3N MBT3N PBT3N Copyright 2013 by TLV CO LTD All rights reserved ...

Страница 2: ...eam Trap features a combination of the most reliable of steam traps the free float a compact ball valve with superior long lasting sealing properties and an actuator unit electric pneumatic The following models are contained in this manual BT3N Steam trap with an integrated compact bypass blowdown ball valve with a manual operation handle MBT3N Steam trap with an integrated compact bypass blowdown...

Страница 3: ...jury CAUTION Indicates that there is a possibility of injury or equipment product damage WARNING NEVER apply direct heat to the float The float may explode due to increased internal pressure causing accidents leading to serious injury or damage to property and equipment Install properly and DO NOT use this product outside the recommended operating pressure temperature and other specification range...

Страница 4: ...d discharge which may cause burns or other injury Do not stand on or apply body weight to the handle The handle may break resulting in injury or other accidents Make sure the power supply is OFF before carrying out work on the wiring or inspections involving disassembly If such work is carried out with the power on there is a danger that equipment may malfunction or electric shock may occur leadin...

Страница 5: ...as a check valve TLV CK been installed 5 Is the inlet pipe as short as possible with as few bends as possible and installed so the liquid will flow naturally down into the trap 6 Has the piping work been done with the proper methods shown in the figures below Requirement Correct Incorrect Install catchpot with the proper diameter Diameter is too small Make sure the flow of condensate is not obstru...

Страница 6: ...se to the fluctuation in load and the condensate is continuously discharged no condensate will accumulate ahead of the steam trap Bypass Valve Closed 3 When the amount of condensate flowing into the chamber decreases the float gradually closes the orifice Steam leakage is prevented through the use of a 3 point seating design and the water sealing of the valve Normally the bimetal remains retracted...

Страница 7: ...roducts with options This item is omitted from the nameplate when there are no options MBT3N Motor Unit Motor Type Reversible motor condenser run type single phase induction motor Power Consumption 52 VA 100 110 V 62 VA 200 220 V Control System ON OFF fully open fully closed Overload Protection Built in thermal protector 120 5 C Direction of Rotation 90 reciprocating Open Close Time 90 rotation 3 ...

Страница 8: ... rotation 0 09 0 8 seconds Actuator Capacity 42 cm 3 Ambient Temp Range 60 C or lower Water Resistance Rainproof Manual Override Possible in absence of motive pressure Air Consumption Graph represents consumption for one reciprocating cycle 1 5 1 0 0 5 0 0 4 0 6 0 8 1 0 kg cm2 G Air Supply Pressure MPaG 4 6 8 10 Air Consumption N litre 1 MPa 10 197 kg cm 2 172 65162M 03 BT3N MBT3N PBT3N 5 Jul 2013...

Страница 9: ...me No Name No Name 1 Body 11 Nameplate 21 Disc Spring 2 Cover 12 Screen 22 Gland Packing 3 Float 13 Ball 23 Washer 4 Orifice 14 Outlet Valve Seat 24 Thrust Washer 5 Orifice Gasket 15 Inlet Valve Seat 25 Washer 6 Air Vent Strip Bimetal 16 Spindle 7 Screw Spring Washer 17 Gland 26 O ring Inlet Outlet Valve Seat 8 Cover Gasket 18 Gland Gasket 27 Valve Holder 9 Cover Bolt 19 Handle 28 Locknut 10 Orifi...

Страница 10: ...Valve Seat 5 Orifice Gasket 17 Gland Holder 28 Valve Holder 6 Air Vent Strip Bimetal 18 Gland Holder Gasket 7 Screw Spring Washer 19 Gland Seat 29 Holder Screw Gland Holder 8 Cover Gasket 20 Disc Spring 30 Bushing 9 Cover Bolt 21 Disc Spring 31 Motor Unit 10 Orifice Plug 22 Gland Packing 32 Shaft Coupling 11 Nameplate 23 Washer 12 Screen 24 Guide Bushing Included only with 15 and 20 mm sizes 172 6...

Страница 11: ...alve Seat 5 Orifice Gasket 17 Gland Holder 28 Valve Holder 6 Air Vent Strip Bimetal 18 Gland Holder Gasket 7 Screw Spring Washer 19 Gland Seat 29 Holder Screw Gland Holder 8 Cover Gasket 20 Disc Spring 30 Bushing 9 Cover Bolt 21 Disc Spring 31 Actuator Unit 10 Orifice Plug 22 Gland Packing 32 Shaft Coupling 11 Nameplate 23 Washer 12 Screen 24 Guide Bushing Included only with 15 and 20 mm sizes 172...

Страница 12: ...rcuits leading to injury fires damage or other accidents may occur CAUTION 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 becoming caught in moving parts could lead to injury damage or other accidents CAUTION Installation inspection maintenance repairs disassembly adjustment and valve opening closing sho...

Страница 13: ... to make sure that the product functions properly as a steam trap If there is a problem determine the cause by using the Troubleshooting section in this manual 2 To use the bypass function turn the handle to a position parallel to the piping The integrated ball valve will open 3 Return the handle to a position perpendicular to the piping to stop using the bypass function The integrated ball valve ...

Страница 14: ...can check whether the valve is opened or closed by checking the orientation of the flat surfaces on the shaft coupling at the base of the motor unit See p 15 When the flat surfaces of the shaft coupling are lined up with the piping the valve is open when they are perpendicular the valve is closed 5 Make sure the control switch is OFF at start up The integrated ball valve is closed causing the prod...

Страница 15: ...tion to ensure that the air is supplied properly The Open Closed Indicator located in the lower part of the actuator indicates whether the valve is opened closed 6 Make sure that the integrated ball valve is closed at start up causing the product to function as a trap The state of the integrated ball valve can be confirmed using the open closed indicator Open the inlet and outlet valves slowly and...

Страница 16: ...motor unit with a wrench and turn in the direction of the arrows When the flat surfaces of the shaft coupling are lined up with the piping the valve is open when they are perpendicular the valve is closed distance across flats 19 mm PBT3N 1 Perform manual operation only after shutting off the air supply first and making sure there is no pressure remaining inside the actuator unit Manual operation ...

Страница 17: ...ried out only by trained maintenance personnel To determine whether the bypass valve is closed make sure that the flat surfaces of the spindle BT3N or the shaft coupling MBT3N and PBT3N are perpendicular to the piping If the valve is not fully closed when the flat surfaces are in this position there is a problem Refer to the Troubleshooting section to determine the cause then correct the problem I...

Страница 18: ...ctuator check the operation angle of rotation time required to open close the valve sound 3 After shutting off the air supply manually operate the valve check for foreign matter in the valve and confirm torques Refer to the following table for tightening torques A torque of more than 2 times the shown torque is considered abnormal and an inspection should be performed Tightening Torque N m No load...

Страница 19: ...ing 1 Loosen the holder screw 2 Tighten the gland holder further in with a socket wrench Holder Screw Gland Holder Hex Key Diameter 2 mm Socket Wrench diameter 17 mm 3 Retighten the holder screw Cautions when applying additional tightening Do not tighten the gland holder completely the first time Do not tighten it any more than necessary to stop leakage If leakage continues even after applying add...

Страница 20: ...e same procedures in reverse to reassemble Installation inspection maintenance repairs disassembly adjustment and valve opening closing should be carried out only by trained maintenance personnel BT3N MBT3N PBT3N Disassembly Reassembly of the Steam Trap Part During Disassembly During Reassembly During Inspection Orifice Plug Remove with a wrench dist across flats 17 mm Wrap 3 3 5 turns of sealing ...

Страница 21: ... tighten to the proper torque torque 0 8 N m Hex Key Bolt Remove with a hex key dist across flats 5 mm Coat threads with anti seize and tighten to the proper torque torque 10 N m dist across flats 5 mm Spring Washer Remove the spring washer Reinsert the spring washer Motor or Actuator Unit Detach the motor or the actuator unit Reattach the motor or the actuator unit Shaft Coupling Detach the shaft...

Страница 22: ...rque 35 N m dist across flats 17 mm Check the spindle sleeve area for signs of seizure deformation scratches etc Spindle Remove the spindle Replace with a new spindle coat sliding area with gland and threads with anti seize Gland Gasket Remove the gland gasket Replace with a new gland gasket only if warped or damaged Gland Packing Remove the gland packing Replace with a new gland packing 1 N m 10 ...

Страница 23: ...e the gland seat Replace with a new gland seat Washer Remove the washer Reinsert the washer Check for damage deformation etc Disc Spring Remove the disc springs Reinsert with the proper orientation see the fig below Check for damage deformation etc Gland Holder Gasket Remove the gland holder gasket Replace with a new gland holder gasket only if misshapen or damaged being careful of the orientation...

Страница 24: ...at Remove the o ring Replace with a new o ring insert into the inlet valve seat Washer Remove the washer Reinsert the washer Check for damage deformation etc Disc Spring Remove the disc spring Reinsert with the proper orientation refer to the fig below Check for damage deformation etc Washer Remove the washer Reinsert the washer Check for damage deformation etc Disc Spring Remove the disc spring R...

Страница 25: ...ogged orifice or rust and scale under the float Clean parts Check for damage to the orifice Replace with a new orifice Check that the float is not misshapen or coated with scale Clean or replace with a new float Check for the improper installation Correct the installation Check for trap vibration Lengthen inlet piping and fasten securely Check to see if the bypass valve is open Close the bypass va...

Страница 26: ...e the full 90 stops at a partial rotation Check to see if there is a problem with the control system Correct the problem If after attempting all of the above remedies the product still does not operate properly contact TLV after confirming operating pressure operating temperature operating frequency and serial number All motor units must be repaired by TLV DO NOT disassemble the motor unit yoursel...

Страница 27: ...if the filter and the air supply ports are clogged Clean parts Check to see if there is a problem with the air supply Correct the problem Does not rotate the full 90 stops at a partial rotation Check to see if the filter and the air supply ports are clogged Clean parts If after attempting all of the above remedies the product still does not operate properly contact TLV after confirming operating p...

Страница 28: ...improper 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 cau...

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