The TLV JH3LH-X is a reliable and durable stainless steel free float steam trap designed for use on small-size process equipment. It features a self-modulating free float that provides continuous, smooth, low-velocity condensate discharge as process loads vary. A constant water seal and unique three-point seating ensure a perfect steam-tight seal, even under no-load conditions. The thermostatic capsule (X-element) with a "fail open" feature vents air automatically at close-to-steam temperature, reducing start-up times and preventing air binding during operation.

Built with an integrated screen featuring a large surface area, the JH3LH-X ensures trouble-free operation. Its design allows for easy, inline access to internal parts, simplifying cleaning and reducing maintenance costs.

Operation

1. Initial Air and Cold Condensate Discharge At startup, before steam is supplied, the trap is cold so the X-element is contracted and the air vent valve seat (A) is open. This allows for the rapid discharge of air through the air vent valve (A) and cold condensate through the orifice (B), when steam is first supplied to the system.

2. Condensate Discharge After the discharge of initial air and cold condensate, the heat of the inflowing steam and condensate causes the X-element to expand, closing the air vent valve (A). The rising condensate level causes the float to rise due to buoyancy, opening the orifice (B) and allowing condensate to be discharged.

3. Hot Air Discharge Should hot air flow into the trap with the steam during normal operation, the temperature of the X-element drops, causing it to momentarily contract and open the air vent valve (A), which allows for the rapid discharge of the air. After the air is discharged and steam contacts the X-element, the temperature will increase causing the air vent valve (A) to close.

4. Closed Position When the condensate flow rate decreases, the float falls as condensate is discharged, closing off the orifice (B). A water seal is maintained at all times over the orifice (B) to prevent steam loss.

Specifications

Model	JH3LH-X
Connection	Flanged
Size	DN 25
Orifice No.	5, 14, 32
Maximum Operating Pressure (barg) PMO	5, 14, 32
Maximum Differential Pressure (bar) ΔPMX	5, 14, 32
Maximum Operating Temperature (°C) TMO	240
Subcooling of X-element Fill (°C)	up to 6
Type of Air Vent	C6

WARNING

PRESSURE SHELL DESIGN CONDITIONS (NOT OPERATING CONDITIONS): Maximum Allowable Pressure (barg) PMA: 32. Maximum Allowable Temperature (°C) TMA: 240. To avoid abnormal operation, accidents or serious injury, DO NOT use this product outside of the specification range.

Parts Configuration

No.	Description	Material	DIN/EN	ASTM/AISI
1	Body	Cast Stainless Steel A351/A351M Gr.CF8M	1.4410	-
2	Cover	Cast Stainless Steel A351/A351M Gr.CF8M	1.4410	-
3	Float	Stainless Steel SUS316L	1.4404	-
4	Orifice Plug	Cast Stainless Steel A351/A351M Gr.CF8M	1.4410	-
5	Orifice Plug Gasket	Stainless Steel SUS316L	1.4404	AISI316L
6	Orifice	-	-	-
7	Orifice Gasket	Stainless Steel SUS316L	1.4404	AISI316L
8	Screen inside/outside	Stainless Steel SUS430/304	1.4016/1.4301	AISI430/304
9	Cover Gasket	Graphite/Stainless Steel SUS316L	-/1.4404	-/AISI316L
10	Nameplate	Stainless Steel SUS304	1.4301	AISI304
11	Float Cover	Stainless Steel SUS304	1.4301	AISI304
12	X-element Guide	Stainless Steel SUS304	1.4301	AISI304
13	X-element	-	-	-
14	Spring Clip	Stainless Steel SUS304	1.4301	AISI304
15	Air Vent Valve Seat	Stainless Steel SUS420F	1.4028	AISI420F
16	Connector	Stainless Steel SUS416	1.4005	AISI416
17	Cover Bolt	Stainless Steel A193/A193M Gr.B8M Cl.2	1.4401	-

Dimensions

DN	L (DIN EN 1092-2 PN40)	H	H1	Weight (kg)
25	160	140	85	5.1

Discharge Capacity

1. Line numbers within the graph refer to orifice numbers.
2. Differential pressure is the difference between the inlet and outlet pressure of the trap.
3. Capacities are based on continuous discharge of condensate 6 °C below saturated steam temperature.
4. Recommended safety factor: at least 1.5.

DANGER

DO NOT use traps under conditions that exceed maximum differential pressure, as condensate backup will occur!

Maintenance and Troubleshooting

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.

Table of Tightening Torques

Part Name & No.	Torque (N·m)	Distance Across Flats (mm)
Cover Bolt 17	50	18
Air Vent Valve Seat 15	35	19
Orifice Plug 4	80	24
Orifice 6	30	10

Troubleshooting Guide

Problem	Cause	Remedy
No condensate is discharged (blocked) or discharge is poor	The float is damaged or filled with condensate	Replace with a new float
	The orifice opening, screen or piping are clogged with rust and scale	Clean parts
	The X-element is scratched or damaged	Replace with a new X-element
	The product operating pressure exceeds the maximum specified pressure, or there is insufficient pressure differential	Compare specifications and actual operating conditions
	Steam locking has occurred	Perform a bypass blowdown or close the trap inlet valve and allow the product to cool
Steam is discharged or leaks from the outlet (blowing) (steam leakage)	Clogged orifice opening or rust and scale build-up beneath the float	Clean parts
	Scratches on the orifice	Replace with a new orifice
	The float is misshapen or has surface build-up	Clean or replace with a new float
	Improper installation orientation	Correct the installation
	Trap vibration	Lengthen the inlet piping and fasten it securely
	The X-element air vent valve seating and/or air vent valve seat have surface build-up or are scratched	Clean or replace with a new X-element / air vent valve seat
Steam is leaking from a place other than the outlet	Gasket deterioration or damage	Replace with new gasket(s)
	Improper tightening torques were used	Tighten to the proper torque
Float frequently becomes damaged	Water hammer has occurred	Study and correct the piping