Tube-Fitting Steam Tracing Temperature Control
The TV/US-X Steam Tracing Control Valve is designed for tracing and process temperature control applications that use tube compression fittings rather than threaded pipe connections.
By modulating heating media according to temperature demand, the TV/US-X helps maintain optimal process temperatures while reducing the risk of overheating and limiting media consumption. Its straightforward installation and stainless-steel construction provide a durable temperature control solution with a long service life.
For cooling applications, the reverse-acting, TV/US-XR can be used to regulate flow to protect a system or process from overheating.
Design Features
- Exclusive Thermoloid® wax thermal actuator
- All stainless-steel construction
- Compact low mass – fast response
- Ram-type plug for reliable shut off
- Narrow temperature band
- Unaffected by pressure variations
Typical Applications
The TV/US-X provides thermostatic temperature control for steam tracing and process heating systems and can regulate steam and other compatible heat-transfer media, including hot water, hot oil, glycol, Dowtherm®, and compressed air.
- Steam tracing and heat tracing systems
- Process piping and transfer lines
- Pre-traced tubing bundles
- Freeze protection for industrial piping and equipment
- Process temperature maintenance
Technical Details
Technical Documents
Specifications
- Sizes: 3/8”, ½”, ¾”
- Maximum Operating Pressure: 200 PSIG (13.8 bar)
- Maximum Valve End Temperature: 388°F (198°C)
- Maximum Sensing End Temperature: Range 150ºF (83.3ºC) over set point with a limit of 300ºF (149ºC)
Ordering
| Part Number | Description |
| 783 – 0X0000 – XXX | 3/8” TV/US-X |
| 784 – 0X0000 – XXX | 1/2” TV/US-X |
Ordering & Configuration Notes
- Full open temperatures “XXX” available: 035°F, 040°F, 050°F, 055°F, 060°F, 065°F, 075°F, 085°F, 090°F, 095°F, 100°F, 105°F, 110°F, 120°F, 125°F, 130°F, 140°F, 150°F, 155°F, 160°F, 170°F, 180°F, 190°F, and 200°F
- Closing temperature is typically 10°F above opening temperature for Direct Acting valves.
- Optional Band-O-Let type attachment fitting must be specified when ordering.
- Viton is standard; EPDM, and Kalrez are available upon request. Consult our product team for ordering information.
- Standard fittings are Parker A-LOK, but Swagelok are available. The first 0 indicates the fittings.
- 0 = Parker fittings
- 1 = Swagelok
TV/US-X Installation
The TV/US-X can use the same immersed or surface-sensing installation methods as the US/S-X, but connects to the heating media through tube compression fittings. The sensing end can be immersed directly in the process fluid or mounted non-invasively to the outside of the pipe with a hose clamp. In surface-sensing installations, the actuator responds to pipe temperature through thermal conduction.
How the TV/US-X Valve Works
As a direct-acting valve, the TV/US-X opens when the sensed temperature falls to the valve’s specified temperature, increasing heating media flow. As temperature rises, the valve modulates toward the closed position to reduce heat input and maintain the process within the desired temperature range.
For example, a 90°F valve opens at approximately 90°F and closes at approximately 100°F, maintaining the process temperature within a typical 10°F differential.
