TLV P65SRN inline repairable thermodynamic steam trap with thermostatic air vent. It can be used without adjustment for medium capacity applications between 0.03 and 4.6 or 6.5 MPaG (5 and 650 or 925 psig), such as steam mains, tracers, and coils. The trap discharges condensate at a temperature slightly lower than saturation temperature.

WARNING

Install properly and DO NOT use this product outside the recommended operating pressure, temperature and other specification ranges.

Configuration

No.	Description	M*	R*	No.	Description	M*	R*
1	Body			8	Nameplate		√
2	Module Valve Seat		√	9	Inner Module Gasket	√	√
3	Cover		√	10	Screen		√
4	Disc		√	11	Screen Holder Gasket	√	√
5	Disc Holder Ring		√	12	Screen Holder
6	Air Vent Ring (Bimetal)		√	13	Cap		√
7	Outer Module Gasket	√	√	14	Flange

*M = Maintenance Kit; R = Repair Kit; replacement parts are available only in their respective kits.

Specifications

Refer to the product nameplate for detailed specifications.

• Minimum Operating Pressure: 0.03 MPaG (5 psig)
• Maximum Allowable Back Pressure: 80% of inlet pressure

Proper Installation

• 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.
• 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. The trap can be installed either horizontally or vertically, but make sure the arrow on the trap points in the direction of flow.
4. Install the trap in the lowest part of the pipeline or equipment so that condensate flows naturally into the trap by gravity. The inlet pipe should be as short and have as few bends as possible.
5. 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 maintenance.
7. Install a check valve at the trap outlet whenever more than one trap is connected to the condensate collection pipeline.
8. In order to avoid excessive back pressure, make sure the discharge pipes are large enough; (the outlet back pressure allowance should be no more than 80% of the inlet steam pressure).
9. We recommend unions to facilitate connection and disconnection of the screwed version.

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

Status	Description
Normal	Condensate is discharged in a short blast followed by a longer period of no drainage. During the discharge, flash steam may be seen. A small amount of flash steam may be visible after the discharge.
Blocked	No condensate is discharged. The trap is quiet and makes no noise. 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 condensate, accompanied by a high-pitched sound.
Chattering	The trap does not close properly. Steam is discharged from the trap in short rapid bursts.

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.

Parts Inspection Procedure

• Body, Cover: Check inside for damage, dirt, grease, oil film, rust or scale
• Gaskets: Check for warping or damage
• Screen: Check for clogging or corrosion
• Disc: Check for damage or wear
• Disc Holder Ring: Check for damage or wear
• Air Vent Ring: Check for damage or wear
• Module Valve Seat Surface: Check for damage or wear

Troubleshooting

Problem	Cause	Remedy
No condensate is discharged (blocked) or discharge is poor	Screen is clogged with rust or scale	Clean
	Air vent ring (bimetal) is broken or worn, causing air-binding	Replace air vent ring
	Disc holder ring is broken or worn, causing air-binding	Replace disc holder ring
	Disc is sticking to valve seat (due to oil, etc.)	Clean
	Steam-locking has occurred	Perform a bypass blow-down, or close the trap inlet valve and allow the trap to cool. Piping correction may also be required.
	Trap capacity is insufficient	Change to trap of suitable capacity
	Differential pressure is low	Study inlet/outlet pressure, including rise in outlet pipe
Steam leakage or blowing (from valve seat)	Valve closure is obstructed by scale, etc.	Clean or replace screen
	Disc or valve seat is worn	Replace worn parts
	Air vent ring (bimetal) or disc holder ring is broken, obstructing valve closure	Replace air vent ring or disc holder ring
	Back pressure exceeds allowable value	Use within pressure range
	Trap is being used below minimum operating pressure	Use within pressure range
	Disc is sticking to top of cover (due to oil, etc.)	Clean
Valve chattering (Leakage)	Foreign matter or oil film on disc or valve seat	Clean
	Scratches on disc or valve seat	Replace disc or valve seat
	Disc or valve seat is worn	Replace disc or valve seat
Leakage from a location other than valve seat	Bypass valve is damaged or open	Replace or close bypass valve
	Cover is loose or module gaskets are damaged	Tighten cover or replace module gaskets
	Cover is loose or sealing surface between cover and valve seat is damaged	Tighten or replace cover, or replace valve seat

Optional Blowdown Valve BD2

The BD2 Blowdown Valve, installed in place of the screen holder, uses internal pressure to blow out condensate/steam, dirt and scale to the atmosphere.

WARNING

When operating the blowdown valve, stand to the side well clear of the outlet to avoid contact with internal fluids that will be discharged. Operate the valve slowly and surely.

Reassembly of Blowdown Valve

1. Clean the trap, BD2 threads, and sealing surfaces, and apply a small amount of anti-seize.
2. Replace gasket.
3. Carefully place the gasket over the threaded portion, and position carefully so that it does not become off-center.
4. Fasten to the steam trap with the proper torque.