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172-65122MA-04 (L BD2) 9 March 2017

Balanced Pressure Thermostatic Steam Trap

L21S / L32S

L21SC / L32SC

Copyright © 2017 by TLV CO., LTD.

All rights reserved

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Summary of Contents for L21S

Page 1: ...172 65122MA 04 L Series BD2 9 March 2017 Balanced Pressure Thermostatic Steam Trap L21S L32S L21SC L32SC Copyright 2017 by TLV CO LTD All rights reserved ...

Page 2: ...s sealed inside the X element and the valve opens or closes based on the difference between the saturation temperatures of the thermoliquid and the water The X element is very sensitive to changes in temperature and responds with great accuracy quickly discharging air and the large quantities of condensate created immediately after operation start up thereby greatly reducing start up time It also ...

Page 3: ...DANGER WARNING or CAUTION item DANGER Indicates an urgent situation which poses a threat 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 CAUTION Install properly and DO NOT use this product outside the recommended operating pressure temperature and other spec...

Page 4: ...damage to the product and burns or other injury due to malfunction or the discharge of fluids 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 c...

Page 5: ...een installed models L21S and L32S 4 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 5 Has the piping work been done correctly as 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 obstructed Diameter i...

Page 6: ...rature TMA Nominal Diameter Maximum Operating Temperature TMO Maximum Allowable Pressure Maximum Operating Pressure X element Type Maximum allowable pressure PMA and maximum allowable temperature TMA are PRESSURE SHELL DESIGN CONDITIONS NOT OPERATING CONDITIONS Valve No is displayed for products with options This item is omitted from the nameplate when there are no options Maximum Operating Temper...

Page 7: ... damaged by the welding process if limited to a single pass there is no need to remove them before welding 1 Before installation be sure to remove all protective seals 2 Before installing the product blow out the inlet piping to remove any piping scraps dirt and oil Close the inlet valve after blowdown 3 Install the product so that the arrow on the body is pointing in the direction of condensate f...

Page 8: ...o steam leakage Normal Condensate is discharged intermittently together with flash steam and the sound of flow can be heard Blocked Discharge Impossible No condensate is discharged The trap is quiet and makes no noise and the surface temperature of the trap is low Blowing Live steam continually flows from the outlet and there is a continuous metallic sound Steam Leakage Live steam is discharged th...

Page 9: ...the Components Inside the Body Part During Disassembly During Reassembly Spring Clip Remove with a needle nose pliers Insert securely into the slot in the X element guide Figure A X element Grasp the ball on the top of the X element with a pliers and remove Make sure the side of the X element with the ball on it is facing up and insert keeping the X element level and making sure it does not catch ...

Page 10: ...172 65122MA 04 L Series BD2 9 Mar 2017 9 Exploded View Cover Bolt Nameplate Cover Spring Clip X element Valve Seat X element Guide Cover Gasket Body Screen Screen Holder Gasket Screen Holder ...

Page 11: ...the gasket onto the center of the gasket surface of the plug holder making sure the anti seize affixes the gasket tightly to the plug holder Check to make sure the gasket is not caught in the recesses of the threads Hold the plug holder upside down to make sure that the anti seize makes the gasket stick to the plug holder even when the plug holder is held upside down Screw the plug holder by hand ...

Page 12: ...ressure differential between the trap inlet and outlet Compare specifications and actual operating conditions Steam is discharged or leaks from the outlet blowing steam leakage There is rust or scale between the valve area on the X element and the valve seat Clean parts The X element valve and valve seat are damaged Replace with a new X element and or valve seat The X element is broken Replace wit...

Page 13: ...o 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 c...

Page 14: ... discharge causing burns CAUTION Configuration Screen Holder Gasket BD2 Valve Seat Screen Holder Screen Valve Stopper Pin BD2 Valve Discharge Hole TLV Blowdown Valve BD2 The BD2 Blowdown Valve installed in the screen area of the body uses the trap s internal pressure to blow any condensate steam dirt or scale accumulated around the screen area out to atmosphere BD2 Blowdown Valve Operation 1 The B...

Page 15: ...Torques and Distance Across Flats Part Torque Distance Across Flats N m lbf ft mm in BD2 Valve 30 22 17 21 32 BD2 Valve Seat Screen Holder 60 44 22 7 8 NOTE Avoid the use of excessive tightening torques as threaded parts may become damaged 1 N m 10 kg cm With Automatic Non freeze Valve TLV NF6 Valve Seat with 1 mm 0 04 in drain hole The valve seat has a 1 mm 0 04 in drain hole to ensure no condens...

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