TLV JH3-X and JH3-B are reliable and durable stainless steel free float steam traps with thermostatic air venting, designed for use on small-size process equipment. The inline repairable JH-X series is suitable for a wide range of applications with small-to-large capacities and pressures up to 32 barg (3.2 MPaG), such as heat exchangers, process heaters, and coils. The JH3-B model is also suitable for both superheated and high-pressure process equipment.

The traps discharge condensate continuously and automatically, at a temperature slightly lower than saturation temperature.

Features

• Self-modulating free float provides continuous, smooth, low velocity condensate discharge as process loads vary.
• Constant water seal and unique three-point seating ensure perfect steam-tight seal, even under no-load conditions.
• JH3-X: Thermostatic capsule (X-element) with "fail open" feature vents air automatically at close-to-steam temperature.
• JH3-B: Thermostatic bimetal air vent valve vents air automatically for rapid startup.
• Built-in screen with large surface ensures trouble-free operation.
• Easy, inline access to internal parts simplifies cleaning and reduces maintenance costs.

Specifications

Model	JH3-X	JH3-B
Connection	Flanged	Flanged
Size	DN 15, 20, 25	DN 15, 20, 25
Orifice No.	2, 5, 10, 14, 22, 32	2, 5, 10, 14, 22, 32
Maximum Operating Pressure (PMO)	2, 5, 10, 14, 22, 32 barg	2, 5, 10, 14, 22, 32 barg
Maximum Differential Pressure (ΔPMX)	2, 5, 10, 14, 22, 32 bar	2, 5, 10, 14, 22, 32 bar
Maximum Operating Temperature (TMO)	240 °C	350 °C
Type of Air Vent	X-element (6 °C subcooling)	Bimetal (vents air up to approx. 100 °C)

PRESSURE SHELL DESIGN CONDITIONS

• Maximum Allowable Pressure (PMA): 32 barg
• Maximum Allowable Temperature (TMA): 350 °C
• Minimum Allowable Temperature: -40 °C

Maximum allowable pressure (PMA) and maximum allowable temperature (TMA) are PRESSURE SHELL DESIGN CONDITIONS, NOT OPERATING CONDITIONS.

Configuration

No.	Description	No.	Description	No.	Description
1	Body	12	Connector	23	Screen Holder
2	Cover	13	Connector Gasket	24	Snap Ring
3	Cover Gasket	14	X-element	25	Snap Ring
4	Float	15	X-element Guide	26	Screen Holder Retainer
5	Orifice	16	Air Vent Valve Seat	27	X-element Case
6	Orifice Gasket	17	Spring Clip	28	X-element Screen
7	Orifice Plug or Outlet Cover	18	Flange or Socket	29	Eye Bolt
8	Plug or Outlet Cover Gasket	19	Nameplate	30	X-element Case Gasket
9	Screen	20	Float Cover	31	Outlet Cover Bolt
10	Cover Bolt	21	Drain Plug*	32	Outlet Cover Nut
11	Cover Nut	22	Drain Plug Gasket*

* Option for JH3-X

Dimensions

JH3-X / JH3-B Flanged (mm)

DN	L (DIN 2501 PN25/40)	H	H1	Weight (kg)
15	150	132	84	3.4
20	140	132	90	3.6
25	160	147	92	4.6

Discharge Capacity

JH3-X

JH3-B

Capacity Notes

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.

Installation & Piping Arrangement

• Install the steam trap within the allowable inclination (horizontal tolerance). Make sure that the arrow mark on the body corresponds with the direction of flow.
• Install the trap in the lowest part of the pipeline or equipment so the condensate flows naturally into the trap by gravity. The inlet pipe should be as short and have as few bends as possible.
• Support the pipes properly within 800 mm (2.5 ft) on either side of the trap.
• Install a bypass valve to discharge condensate, and inlet and outlet valves to isolate the trap in the event of trap failure or when performing maintenance.
• Install a check valve at the trap outlet whenever more than one trap is connected to the condensate collection pipeline.

WARNING

NEVER apply direct heat to the float. The float may explode due to increased internal pressure, causing accidents leading to serious injury or property and equipment damage.

Operational Check

A visual inspection can be carried out to aid in determining the necessity for immediate maintenance or repair, if the trap is open to atmosphere.

Status	Description
Normal	Condensate is discharged continuously with flash steam and the sound of flow can be heard. If there is very little condensate, there is almost no sound of flow.
Blocked	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 through the trap outlet together with the condensate and there is a high-pitched sound.

Troubleshooting

If the expected performance is unachievable after installation, check the following points:

Problem	Cause	Remedy
No condensate is discharged (blocked) or discharge is poor	Float is damaged or filled with condensate	Replace the float
	Orifice, screen or piping are clogged with rust or scale	Clean
	X-element is damaged	Replace the X-element
	The trap operating pressure exceeds the maximum specified pressure, or there is insufficient pressure differential	Compare specifications and actual operating conditions
	Steam locking has occurred	Blowdown through the bypass or close the trap inlet valve and allow the trap to cool
Steam is discharged or leaks from the trap outlet (blowing / steam leakage)	Rust and scale have accumulated around the orifice or under the float	Clean
	Orifice is damaged	Replace with new orifice
	Float is deformed or coated with scale	Clean or replace the float
	Trap is installed above the maximum allowable inclination angle	Correct the installation
	Vibration of trap occurs	Lengthen inlet piping, then fasten it securely
	The X-element is damaged, or clogged with rust or scale	Clean or replace the X-element
Steam leaks from a place other than the trap outlet	Deterioration of or damage to gaskets	Replace the gaskets
	Leakage from eroded cavities of body or cover	Replace the trap
	Improper tightening torque for cover was used	Tighten to the proper torque
Float is frequently damaged	Water hammer occurs	Examine the piping for problems that can cause water hammer