ePrivacy and GPDR Cookie Consent by Cookie Consent
TLV 70th anniversary logo, designed by Ariff Rahman of TLV Malaysia
Home > Products > Steam Traps > Thermostatic Steam Traps > Thermostatic Steam Traps
More Information

Email Magazine

Discover steam engineering tips in our bi-monthly newsletter.

Sign up now

Thermostatic Steam Traps

Thermostatic Steam Traps

These steam traps operate via the temperature difference between steam and condensate.

Operating Pressure Range: 0.1 - 32 barg
Operating Temperature Range: 0 - 240 °C

Product Selection by Application


Balanced Pressure Thermostatic Steam Traps Pamphlet (663 KB)
QuickTrap® Series Pamphlet (175 KB)
Thermostatic Steam Trap L21S (Animation)

Product Details

L21S

L21S 		Specifications Manual 
• Max. Operating Pressure: 21 barg
• Max. Operating Temperature: 235°C
• L21SC features an integral check valve
• Body: Carbon Steel

L32S

L32S 		Specifications Manual 
• Max. Operating Pressure: 32 barg
• Max. Operating Temperature: 240°C
• L32SC features an integral check valve
• Body: Carbon Steel

LV13L

LV13L 		Specifications Manual 
• Max. Operating Pressure: 13 barg
• Max. Operating Temperature: 200°C
• Brass Construction Angled Body

LV13N

LV13N 		Specifications Manual 
• Max. Operating Pressure: 13 barg
• Max. Operating Temperature: 200°C
• Body: Brass

LV21

LV21 		Specifications Manual 
• Max. Operating Pressure: 21 barg
• Max. Operating Temperature: 235°C
• Body: Cast Stainless Steel

FL21 QuickTrap®

FL21 QuickTrap® 		Specifications Manual 
• Max. Operating Pressure: 21 barg
• Max. Operating Temperature: 235°C
• Universal flange
• FL21C features an integral check valve
• Body: Cast Stainless Steel

FL32 QuickTrap®

FL32 QuickTrap® 		Specifications Manual 
• Max. Operating Pressure: 32 barg
• Max. Operating Temperature: 240°C
• Universal flange
• FL32C features an integral check valve
• Body: Cast Stainless Steel

Always check the specification PDFs for the exact product specification available in your region.


Benefits and Features

All L, LV, and FL series models employ a thermoliquid-filled X-element, which acts as the valve.

Improved Productivity
The X-element discharges hot air as well as low-temperature air and cold condensate. This encourages the inflow of steam, thereby reducing start-up times.
Protects Equipment
The valve remains open even in the event of a failure due to the 'fail open' construction of the X-element, which means that the equipment can continue operating (though steam loss will occur).
Long Service Life
Any rust or scale entering the trap from the piping is discharged together with the condensate through the large valve opening, greatly reducing the chance of a build-up of rust or scale that could obstruct the valve opening.

Application Areas

Suitable for use in a variety of applications.

Main Applications
Air conditioning, steam tracers, steam heating equipment, etc.


Product Selection by Application

This guide shows the most suitable TLV steam traps for an array of applications.
Start by selecting an application from the drop-down menu at the top, then search for your desired operation principle, pressure category, and other special features to find the right steam trap.

Steam Mains and Steam Headers

Steam Mains and Steam Headers

Product Features

  • Models categorized for "energy saving" have minimal steam loss
  • Tight seal even under minimal load
  • Operation not receptive to environmental influences (wind, rain/snow)
  • Initial air venting feature

Special Features for Pipe End Traps

  • Initial air venting feature
  • Swift discharge of high condensate load at start-up
  • No condensate back-up owing to continuous discharge
Operation Principle Pressure Category*1 (barg) Remark Product Series Further Reference
Continuous discharge (Energy saving model) Up to 10 With bypass valve J3S-X-BV, J3S-X-PB Steam Traps with Bypass Valve
Up to 21 - SS Series (SS1, SS3) Free Float® Steam Traps for Main Lines
With bypass valve J3S-X-RV Steam Traps with Bypass Valve
Up to 32 - SS Series (SS5) Free Float® Steam Traps for Main Lines
JH3S-B Free Float® Steam Traps (Medium / High Pressure)
QuickTrap with universal connector FS Series Free Float® Steam Traps for Main Lines
Up to 46 QuickTrap with universal connector FS Series (FS5H)
- SS Series (SS5H)
JH-B Series Free Float® Steam Traps (Medium / High Pressure)
Up to 65 SH Series Free Float® Steam Traps for Main Lines
JH-P Series Free Float® Steam Traps (Medium / High Pressure)
Up to 100 JH7RH-B
Up to 120 JH7RH-P
Cyclic operation (Energy saving model) Up to 32 - L Series Thermostatic Steam Traps
QuickTrap with universal connector FL Series
Intermittent operation Up to 13 Inline replaceable valve module A3N Disc-Type Steam Traps
Up to 46 QuickTrap with universal connector & inline replaceable valve module FP46UC
Up to 65 Inline replaceable valve module P Series*2
Up to 260 HR Series

*1 Operating pressures vary between different models of the same series. For details please refer to individual Specification Data Sheets (SDS).
*2 Except P46S and P21S ver.C.

Equipment and Processes

Equipment and Processes

Product Features

  • No condensate back-up owing to continuous discharge
  • Self-modulating discharge as condensate load varies
  • Initial air venting feature
  • High back pressure tolerance (Condensate discharge capacity even at small differential pressure)
  • "Fail open" to avoid condensate back-up under any circumstances
End-usage Pressure Category*2 (barg) Remark Series Further Reference
Heating
  • Heat exchangers*1
  • Reboilers*1
  • Heaters, pre-heaters
  • Jacketed kettles*1
  • Autoclaves (Sterilizers, etc.)
  • Tank heaters*1
  • Other heaters
 Up to 10 With bypass valve J3S-X-BV, J3S-X-PB Steam Traps with Bypass Valve
Up to 22 - SJFX Series Free Float® Steam Traps (Low Pressure)
Up to 21 JX Series
With bypass valve J3S-X-RV Steam Traps with Bypass Valve
For sterile processes LV6 Clean Steam Traps
SS5P
Up to 32 For small size equipment L Series Thermostatic Steam Traps
- JH-X Series Free Float® Steam Traps (Medium / High Pressure)
Vaporization
  • Evaporators*1
  • Tank crystallizers*1
  • Enrichment tanks*1
  • Distillers*1
  • Other vaporizers
 Up to 46 - JH-B Series
Up to 32 Up to 400°C SJHB Series
Up to 65 - SH Series
JH-P Series
Up to 100 JH7RH-B
Up to 120 JH7RH-P
Drying
  • Hot air dryers
  • Presses
  • Other dryers
 Up to 32 - JL Series Large Capacity Float Steam Traps
Up to 46 JL15 Series
Up to 32 Up to 400°C SJHB Series Free Float® Steam Traps (Low Pressure)
  • Cylinder dryers, roll dryers
  • Corrugated folding presses, etc.
 Up to 22 - SJFX Series
Up to 21 JX Series
Up to 32 For small size equipment L Series Thermostatic Steam Traps
- SJHX Series Free Float® Steam Traps (Medium / High Pressure)
*1 Depending on the operation condition, the indicated equipment may be subject to "stall" (see *3 below). In such cases, GT Series PowerTraps are required. GT Series PowerTraps are steam traps that feature a pump function. GT Series PowerTraps

*2 Operating pressures vary between different models of the same series. For details please refer to individual Specification Data Sheets (SDS).

*3 "Stall" is a phenomenon where the internal pressure of an equipment falls below the back pressure on the outlet side, resulting in back-up of condensate that cannot be discharged by conventional steam traps. "Stall" can cause damage such as uneven/incomplete product heating, corrosion and waterhammer.

Heat Exchangers and Air Conditioning

Heat Exchangers and Air Conditioning

Product Features

  • No condensate back-up owing to continuous discharge
  • Self-modulating discharge as condensate load and pressure changes
  • Initial air venting feature
  • Quiet operation
End-usage Pressure Category*2 barg Remark Series Further Reference
  • Air conditioners / air heaters*1
  • Unit heaters
  • Plate heat exchangers
  • Strip heaters*1
  • Other heaters and air conditioners
 Up to 10 With bypass valve J3S-X-BV, J3S-X-PB Steam Traps with Bypass Valve
Up to 22 - SJFX Free Float® Steam Traps (Low Pressure)
Up to 21 JX Series
With bypass valve J3S-X-RV Steam Traps with Bypass Valve
Up to 32 For small size equipment L Series Thermostatic Steam Traps
- SJHX Series Free Float® Steam Traps (Medium / High Pressure)
*1 Depending on the operation condition, the indicated equipment may be subject to "stall" (see *3 below). In such cases, GT Series PowerTraps are required. GT Series PowerTraps are steam traps that feature a pump function. GT Series PowerTraps

*2 Operating pressures vary between different models of the same series. For details please refer to individual Specification Data Sheets (SDS).

*3 "Stall" is a phenomenon where the internal pressure of an equipment falls below the back pressure on the outlet side, resulting in back-up of condensate that cannot be discharged by conventional steam traps. "Stall" can cause damage such as uneven/incomplete product heating, corrosion and waterhammer.

Trace and Tank Coils

Trace and Tank Coils

Product Features

  • Models categorized as "energy saving" have minimal steam loss
  • Tight seal even under minimal load
  • Operation not receptive to environmental influences (wind, rain/snow)

Special Features for Measurement Instruments

  • Small and lightweight construction
End-usage Control Temperature Category Remark Series Further Reference
Insulation jackets - - SS Series Free Float® Steam Traps for Main Lines
L Series Thermostatic Steam Traps
A3N Disc-Type Steam Traps
P Series
QuickTrap with universal connector FS Series Free Float® Steam Traps for Main Lines
FL Series Thermostatic Steam Traps
FP46UC Disc-Type Steam Traps
Pipe trace heating Controlled temperature above 80°C - SS Series Free Float® Steam Traps for Main Lines
L Series Thermostatic Steam Traps
A3N Disc-Type Steam Traps
P Series
QuickTrap with universal connector FS Series Free Float® Steam Traps for Main Lines
FL Series Thermostatic Steam Traps
FP46UC Disc-Type Steam Traps
Controlled temperature up to 80°C Utilizes sensible heat LEX3N-TZ Temperature Control Steam Traps
Instrumentation trace heating Controlled temperature above 80°C - P21S ver.C Disc-Type Steam Traps
P46S
LV Series Thermostatic Steam Traps
Controlled temperature up to 80°C Utilizes sensible heat LEX3N-TZ Temperature Control Steam Traps