Product Overview
MAMAC Systems A-500-1-A-1 4" Brass Thermowell
The MAMAC Systems A-500-1-A-1 is a 4-inch brass thermowell used with compatible immersion temperature sensors in HVAC piping applications. It has a 0.255-inch bore for a standard 1/4-inch O.D. probe, a 3/4-inch NPT external connection, a 1/2-inch NPT internal connection, and a 2-1/2-inch insertion length.
Machined from one piece of brass, the thermowell provides a pressure-rated barrier between the sensor probe and the process medium while supporting temperature transfer to the sensor. The A-500 family is rated for pressures up to 3,000 PSIG; confirm the connection sizes, insertion requirement, sensor dimensions, and application conditions before selecting it as a replacement.
Part Details:
- MAMAC Systems part number A-500-1-A-1
- 4-inch brass thermowell with a 4-1/4-inch overall dimension
- 2-1/2-inch insertion length
- 3/4-inch NPT external and 1/2-inch NPT internal threads
- 0.255-inch bore for a standard 1/4-inch O.D. probe
- A-500 family pressure rating of up to 3,000 PSIG
Documentation:
FAQs:
Q: What are the specifications of the MAMAC Systems A-500-1-A-1 thermowell?
A: The MAMAC Systems A-500-1-A-1 is a 4-inch, single-piece brass thermowell with a 3/4-inch NPT external thread, 1/2-inch NPT internal thread, 0.255-inch bore, and 2-1/2-inch insertion length. The A-500 family has a published pressure rating of up to 3,000 PSIG.
Q: What temperature sensors are compatible with the MAMAC A-500-1-A-1 thermowell?
A: The A-500-1-A-1 is designed around a standard 1/4-inch O.D. probe and has a 0.255-inch bore. The A-500 series is for use with standard-length MAMAC TE-series immersion thermistor and RTD sensors, but the probe diameter, insertion length, and 1/2-inch NPT sensor connection should be verified for the specific sensor model.
Q: What do the numbers and letters in A-500-1-A-1 mean?
A: The first 1 identifies the 4-inch length, A identifies the 3/4-inch NPT external and 1/2-inch NPT internal thread configuration, and the final 1 identifies brass construction. These ordering codes distinguish this model from other A-500 lengths, connections, and materials.
Q: How can I confirm that the A-500-1-A-1 is the correct replacement thermowell?
A: Confirm that the application requires brass construction, a 2-1/2-inch insertion length, a 3/4-inch NPT process connection, a 1/2-inch NPT sensor connection, and a standard 1/4-inch O.D. probe. Compare the existing part number and equipment documentation because other A-500 configurations may have different lengths, threads, or materials.
Q: Is the A-500-1-A-1 the stainless-steel version of the MAMAC A-500 thermowell?
A: No. The final 1 identifies brass, while material code 2 identifies stainless steel. The 4-inch stainless-steel version with the same A-thread configuration is A-500-1-A-2 and should not be treated as the same part.
