The TLV SJH5NX / SJH5VX 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, such as heat exchangers, tank heaters, dryers, and process equipment. The traps discharge condensate continuously and automatically, at a temperature slightly lower than saturation temperature.

Configuration

Proper Installation

WARNING

• Installation, inspection, maintenance, repairs, disassembly, adjustment and valve opening/closing should be carried out only by trained maintenance personnel. • Take measures to prevent people from coming into direct contact with product outlets. • Use hoisting equipment for heavy objects. • Install for use under conditions in which no freeze-up will occur. • Install for use under conditions in which no water hammer will occur.

1. Before installation, be sure to remove all protective seals.
2. Before installing the trap, blow out the inlet piping to remove all dirt and oil.
3. 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.
4. Install the trap within the allowable inclination, as shown below. Also make sure that the arrow mark on the body corresponds with the direction of flow.
5. When completing the piping, support the pipes properly within 800 mm (2.5 ft) on either side of the trap.
6. 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.
7. Install a check valve at the trap outlet whenever the condensate discharge pipe leads to a tank or recovery line, or whenever the condensate collection pipeline is connected with more than one trap.

Maximum Allowable Inclination

Piping Arrangement

Check to make sure that the pipes connected to the trap have been installed properly.

Requirement	Correct	Incorrect
Install a catchpot of the proper diameter.		Diameter is too small.
Make sure the flow of condensate is not obstructed.		Diameter is too small and inlet protrudes into pipe.
To prevent rust and scale from flowing into the trap, connect the inlet pipe 25 - 50 mm (1 - 2 in) 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 the flow of condensate.		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. If the trap does not discharge to atmosphere, use diagnostic equipment such as TLV TrapMan or TLV Pocket TrapMan (within its pressure and temperature measuring range).

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.

(When conducting a visual inspection, flash steam is sometimes mistaken for steam leakage. For this reason, the use of a steam trap diagnostic instrument such as TLV TrapMan is highly recommended.)

Inspection and Maintenance

Operational inspections should be performed at least twice per year, or as called for by trap operating conditions. Steam trap failure may result in temperature drop in the equipment, poor product quality or losses due to steam leakage.

DANGER

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.

WARNING

• Installation, inspection, maintenance, repairs, disassembly, adjustment and valve opening/closing should be carried out only by trained maintenance personnel. • Before attempting to open the trap, close the inlet and outlet isolation valves and wait until the trap has cooled completely. Failure to do so may result in burns. • Be sure to use the proper components and NEVER attempt to modify the product.

Parts Inspection Procedure

Part	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 (SJHX), Orifice	Check for rust, scale, oil film, wear or damage

Disassembly/Reassembly (to reassemble, follow procedures in reverse)

Part & No.	Disassembly	Reassembly
Cover Nut 10	Use a wrench to remove	Coat threads with anti-seize and tighten to the proper torque
Cover 2	Remove	Reattach with writing in the proper orientation
Cover Gasket 8	Remove gasket and clean sealing surfaces	Replace with a new gasket, do not apply anti-seize
Float 3	Remove, being careful not to scratch its polished surface	Insert into body, being careful not to scratch its polished surface
Orifice Plug 7	Use a wrench to remove	Coat threads with anti-seize and tighten to the proper torque
Orifice Plug Gasket 6	Remove gasket and clean sealing surfaces	Replace with a new gasket, coat surfaces with anti-seize
Orifice 4	Use a wrench to remove	Coat threads with anti-seize and tighten to the proper torque
Orifice Gasket 5	Remove gasket and clean sealing surfaces	Replace with a new gasket, do not coat surfaces with anti-seize
Screen Holder 12	Use a wrench to remove	Coat threads with anti-seize and tighten to the proper torque
Screen Holder Gasket 11	Remove gasket and clean sealing surfaces	Replace with a new gasket, coat surfaces with anti-seize
Main Screen 13	Remove being careful not to bend	Insert closed end first so the open end is at the opening in the body
X-element Cover 15	Use a wrench to remove	Coat threads with anti-seize and tighten to the proper torque
X-element Cover Gasket 14	Remove gasket and clean sealing surfaces	Replace with a new gasket, coat surfaces with anti-seize

Tightening Torque and Distance Across Flats

Model	SJH5NX / SJH5VX	SJH5NX / SJH5VX
	N·m	mm
Cover Nut 10	110	22
Orifice 4	80	19
X-element Cover 15	140	32
Screen Holder 12	140	24
Air Vent Valve Seat 18	35	19

Note: Coat all threads with anti-seize.

Instructions for Plug / Holder Disassembly and Reassembly

The seal on the threaded plugs/holders found on TLV products is formed by a flat metal gasket. There are various installation orientations for the gaskets, such as horizontal, diagonal and downward, and the gasket may be pinched in the thread recesses during assembly.

1. Remove the plug/holder using a tool of the specified size (distance across flats).
2. The gasket should not be reused. Be sure to replace it with a new gasket.
3. Clean the gasket surfaces of the plug/holder and the product body using a rag and/or cleaning agents, then check to make sure the surfaces are not scratched or deformed.
4. Coat both the gasket surface of the plug/holder and the threads of the plug/holder with anti-seize, then press 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.

5. 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.
6. Screw the plug/holder by hand into the product body while making sure that the gasket remains tightly affixed to the center of the gasket surface of the plug/holder. Make sure the entire gasket is making contact with the gasket surface of the product body. It is important at this point to make sure the gasket is not pinched in the thread recesses of the plug/holder.

7. Tighten the plug/holder to the proper torque.
8. Next, begin the supply of steam and check to make sure there is no leakage from the part just tightened. If there is leakage, immediately close the inlet valve and, if there is a bypass valve, take the necessary steps to release any residual pressure. After the surface of the product cools to room temperature, repeat the procedure beginning from step 1.

Troubleshooting

If the expected performance is unachievable after installation of the steam trap, check the following points for appropriate corrective measures.

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 between the trap inlet and outlet	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
	Vibration of trap occurs	Lengthen inlet piping, then fasten it securely
	The X-element or air vent valve seat is damaged, or clogged with rust or scale	Clean or replace the X-element or air vent valve seat

Option (Integral Plate-type Bimetal Air Vent Unit)

Configuration

SJH5NB (Horizontal)

SJH5VB (Vertical)

Disassembly/Reassembly of the Bimetal Section

Part	Disassembly	Reassembly
Element Cover	Remove with a socket wrench	Consult the table of tightening torques and tighten to the proper torque
Element Cover Gasket	Remove the gasket and clean sealing surfaces	Replace with a new gasket
Spring Clip	Pinch the insides together and remove from the element guide	Insert it securely into the groove
Bimetal Unit		Insert the bimetal unit into the element guide with "T" mark on the bimetal facing towards the air vent valve seat.
Air Vent Valve Seat (for Bimetal)	Remove with a socket wrench	Consult the table of tightening torques and tighten to the proper torque

Table of Tightening Torques (Bimetal Unit)

Model	Element Cover (N·m)	Element Cover (mm)	Air Vent Valve Seat (N·m)	Air Vent Valve Seat (mm)
SJH5NB / SJH5VB	140	32	35	19