MAMAC Systems A-500-1-B-2 Thermowell

The MAMAC Systems A-500-1-B-2 is a precision-engineered 4-inch stainless steel thermowell designed for immersion temperature sensing in high-demand HVACR applications. Machined from a single solid piece of 304 stainless steel, this industrial thermowell eliminates the risk of leaks associated with welded or soldered alternatives, making it resistant to thermal expansion and vibration. With a 1/2" NPT external thread and a 1/4" NPT internal thread, it provides a secure interface for standard sensors while maintaining a 2.5-inch insertion length for accurate media measurement. The internal bore is precisely machined to 0.255" to ensure a snug fit for 1/4" O.D. probes, maximizing thermal conductivity. This construction withstands up to 3,000 PSIG pressure, making it a reliable choice for protecting sensors in chilled water, hot water, and steam systems where rapid temperature changes and high pressures are constant factors for HVAC contractors.

• Single-Piece Construction: Eliminates joints and welds to prevent leaks caused by thermal shock and rapid cycling.
• High Pressure Rating: Rated for up to 3,000 PSIG, suitable for high-velocity and high-pressure fluid loops.
• Optimized Thermal Transfer: Precision 0.255" bore ensures a tight tolerances for sensors, reducing response lag.
• Corrosion Resistance: 304 Stainless steel construction prevents oxidation and degradation in aggressive media environments.
• Installation Ready: Integrated hexagon wrench flats allow for high-torque tightening without damaging the fitting threads.

What is the maximum pressure rating for this 4-inch thermowell?
The A-500-1-B-2 is rated for up to 3,000 PSIG, making it compatible with most commercial and industrial hydronic systems.

Which probe size is compatible with the A-500-1-B-2?
This model features a 0.255" internal bore designed specifically for standard 1/4" O.D. immersion probes or RTD sensors.

How do I prevent condensation inside the thermowell?
For best performance, technicians should use a high-grade thermal compound (such as MAMAC A-505) to eliminate air gaps and prevent moisture buildup.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.