TLV LV8 and LV8-HC are stainless steel balanced pressure thermostatic steam traps. The LV Series steam traps can be used without adjustment for medium capacity applications up to 0.5, 0.8, 1.3, or 2.1 MPaG (75, 115, 185, or 300 psig). These models are suitable for steam-using equipment that discharges condensate at temperatures slightly below saturation temperature, such as tracer lines, vessels, and heaters.

Configuration and Parts

The LV8 and LV8-HC are constructed primarily of stainless steel and are designed with a fail-open characteristic.

No.	Description	Replacement Part
1	Body (Stainless Steel)
2	Cover (Stainless Steel)
3	X-element	√
4	Valve Seat**	√
5	Screen	√
6	Nameplate
8	Cover Gasket	√

*Note: For the LV8 and LV8-HC, the valve seat is pressed into the cover and is not replaceable. These models do not feature a spring clip to secure the X-element.

Installation and Piping

WARNING

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

• Positioning: 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.
• Valves: Install a bypass valve to discharge condensate, as well as inlet and outlet valves to isolate the trap for maintenance. Install a check valve at the trap outlet whenever the condensate discharge pipe leads to a tank or recovery line.
• Orientation: There may be a slight increase in the amount of steam leakage when the LV8 or LV8-HC is installed horizontally.
• Support: Support the pipes within 0.8 meters (2.5 ft) on either side of the trap.
• Back Pressure: Ensure discharge pipes are large enough to avoid excessive back pressure (outlet back pressure allowance should be no more than 90% of the inlet steam pressure).

Operational Check

A visual inspection can help determine if immediate maintenance or repair is necessary.

Status	Description
Normal	Condensate is discharged intermittently with flash steam and the sound of flow can be heard.
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 may be a high-pitched whistling sound.
Steam Leakage	Live steam is discharged through the trap outlet together with the condensate and there may be a high-pitched whistling sound.

Inspection and Maintenance

Operational inspections should be performed at least twice per year. Before attempting to open the trap, close the inlet and outlet isolation valves and wait until the trap has cooled to room temperature.

Parts Inspection:

• Screen: Check for clogging or corrosion damage.
• X-element / Valve Seat: Check for rust, scale, oil film, wear, or damage.
• Body / Cover: Check inside for rust and scale.

Tightening Torque (Cover): For LV8 and LV8-HC (Stainless Steel), use a tightening torque of 120 N·m (88 lbf·ft). Distance across flats is 27 mm for 8 to 15 (1/4 to 1/2) connections and 41 mm for 20 to 25 (3/4 to 1) connections.