Overview
The thermowell 3/8-150 is a threaded pipe section assembly designed to protect temperature sensors in flowing or pressurized processes. The 3/8″ NPT threaded connection ensures compatibility with standard industrial piping, while the T-shaped fitting provides convenient access for probe installation and removal. With a 150 PSI pressure rating, this thermowell is suitable for moderate-pressure applications in HVAC, process control, and industrial monitoring systems. The integrated 2-wire design simplifies electrical connections for temperature measurement devices.
Key Features
- 3/8″ NPT Threaded Connection — standard pipe thread for direct integration into existing piping systems
- T-Shaped Fitting Design — enables easy probe insertion, alignment, and maintenance without system shutdown
- 150 PSI Pressure Rating — suitable for moderate-pressure industrial and HVAC applications
- Integrated 2-Wire Lead — simplifies electrical connections for direct temperature sensor integration
- Durable Threaded Construction — ensures reliable long-term performance in monitoring critical process temperatures
Technical Specifications
| Pipe Thread Size | 3/8″ NPT (National Pipe Thread) |
| Pressure Rating | 150 PSI |
| Fitting Type | T-Shaped Threaded |
| Sensor Bore Diameter | 0.385″ (standard 3/8″ probe accommodation) |
| Electrical Lead | 2-Wire |
| Connection Method | Male NPT Thread with Sealant (Teflon tape or pipe dope) |
| Typical Materials | Brass, Stainless Steel 304 or 316 |
| Installation Position | Horizontal (pipe-mounted) or Vertical (tank/vessel nozzle) |
| Application Environment | HVAC systems, process control, industrial piping |
Typical Applications
This thermowell assembly is widely used in:
- HVAC and chilled water systems for temperature monitoring and control
- Industrial piping systems requiring in-line temperature measurement
- Process vessels and tanks where temperature probes must be protected from flow dynamics
- Retrofits to existing 3/8″ NPT threaded nozzles or tee fittings
- Moderate-pressure applications (up to 150 PSI) in commercial and industrial settings
Compatibility & Replacements
Compatible With
- 3/8″ NPT threaded pipe connections and reducers
- Standard immersion temperature sensors (RTD, thermocouple, thermistor probes)
- HVAC control systems requiring embedded temperature measurement
- Industrial PLC and building automation system inputs
- Threadolet or tee fittings rated 150 PSI or higher
Replaces / Drop-In Replacement For
This is a generic thermowell component. Verify compatibility with your specific system integrator before ordering, as thermowell specifications vary by manufacturer, bore diameter, and insertion length. Common replacement applications include obsolete or failed threaded thermowells in HVAC and process control retrofit projects.
Works With
- Temperature sensors with 0.385″ stem diameter (3/8″ probes)
- RTD (Resistance Temperature Detector) elements
- Thermocouple probes (K, J, T type)
- Thermistor-based temperature transmitters
- Industrial control interfaces and temperature data acquisition systems
