TLV SJH7NX / SJH7VX inline repairable free float steam traps with thermostatic air vent (X-element) are suitable for a wide range of applications with small-to-large capacities and pressures up to 32 barg. They are commonly used in heat exchangers, tank heaters, dryers, and process equipment. The traps discharge condensate continuously and automatically, at a temperature slightly lower than saturation temperature.

Hazard 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.

Operating Limits

Install properly and DO NOT use this product outside the recommended operating pressure, temperature and other specification ranges. DO NOT use this product in excess of the maximum operating pressure differential. Such use could make discharge impossible (blocked).

Configuration

The SJHX series features versatile configurations for both horizontal and vertical installations.

Proper Installation

1. Before installation, be sure to remove all protective seals and blow out the inlet piping to remove all dirt and oil.
2. Install the trap in the lowest part of the pipeline or equipment so the condensate flows naturally downward into the trap by gravity. The inlet pipe should be as short and have as few bends as possible.
3. Install the trap within the allowable inclination and make sure that the arrow mark on the body corresponds with the direction of flow.
4. Support the pipes properly within 800 mm (2.5 ft) on either side of the trap.

Maintenance Setup

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.

Maximum Allowable Inclination

Piping Arrangement

Requirement	Correct Installation	Incorrect Installation
Install a catchpot of the proper diameter.	Ensure appropriate diameter.	Diameter is too small.
Make sure the flow of condensate is not obstructed.	Flush piping alignment.	Diameter is too small and inlet protrudes into pipe.
To prevent rust and scale from flowing into the trap.	Connect inlet pipe 25 - 50 mm above the base of the T-pipe.	Rust and scale flow into the trap with the condensate.
When installing on the blind end.	Make sure nothing obstructs flow.	Condensate collects in the pipe.

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.

Inspection and Maintenance

Operational inspections should be performed at least twice per year, or as called for by trap operating conditions.

Parts	Inspection Procedure
Body, Cover(s)	Check inside for damage, dirt, grease, oil film, rust or scale
Gaskets	Check for warping or damage
X-element (SJHX)	Check for damage
Screen(s)	Check for clogging, corrosion or damage
Float	Check for deformation, damage, oil film or water inside
Air Vent Valve Seat, Orifice	Check for rust, scale, oil film, wear or damage

Troubleshooting

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 is 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	Blow down 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)	Orifice is clogged, or rust and scale have accumulated under the float	Clean
	Orifice is damaged	Replace the 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