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Brass bimetal thermowell with threaded connections and tapered stem

Value Brand

Value Brand 24C469 Bimetal Thermowell Brass 1/2 NPSM measurement tool

SKU CH-R6WE-23G5F

A brass thermowell with 1/2 NPSM internal thread and 3/4 NPT process connection for temperature sensor protection

  • Product typeEnvironmental & Mechanical
  • Brass construction resists corrosion
  • 1/2 NPSM internal thread fits standard probes
  • 5 in stem suits common insertion depths
  • 3/4 in NPT process connection matches piping
  • 26 in bore accepts standard thermometer stems

Brass Bimetal Thermowell 1/2 NPSM

This brass bimetal thermowell protects temperature sensors in industrial process lines. The 1/2 NPSM internal thread accepts standard stems while the 3/4 NPT process connection seals into piping. A 2.5 inch stem length and 1 3/4 inch insertion depth suit typical vessel nozzles. Brass construction resists corrosion in water and oil systems.

Users Needing 1/2 NPSM Brass Wells

Engineers specifying a 1/2 NPSM brass thermowell for moderate pressure and temperature service will find the dimensions match standard bimetal thermometers. Buyers who need a different thread form, a longer insertion length, or a material rated for aggressive chemicals should look at other options. The Proposition 65 notice also applies for California installations.

1/2 NPSM Internal Thread Fit

The single specification that decides fit is the 1/2 NPSM internal thread size. It must match the thermometer stem thread exactly or the instrument will not seat. Verify the stem diameter against the 0.26 inch bore and the 0.44 inch shank before ordering.

How it compares

Measured against everything we stock in Meters, Testers & Measuring Tools, at today’s prices. Recalculated every night.

Price $8.99
Cheaper than about 92% of the 3,030 comparable items (median $54.99).

Specifications

Product
Brand nameZORO SELECT
Product typeEnvironmental & Mechanical

Questions about this item

What thread size must my temperature sensor have to fit the 0.26 in bore of this thermowell?

The bore diameter is 0.26 in, so the sensor stem must be slightly smaller than that to slide in and make thermal contact.

Will the 3/4 in NPT process connection on this brass thermowell thread into the same port as my existing 1/2 in NPT fitting?

No, 3/4 in NPT is a larger pipe thread than 1/2 in NPT; you would need an adapter or a matching 3/4 in NPT port for a proper seal.

After installation, how can I confirm the 2.5 in stem length is positioning the sensor tip at the correct insertion depth?

With an insertion length of 1 3/4 in, the tip should sit that far into the process flow; verify by measuring from the process connection face to the sensor tip once assembled.

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