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HONEYWELL HOME Mounting Flange Thermowell, Copper, 3/4 in External Thread - HVAC Thermowells
HONEYWELL HOMEHVAC Thermowells

HONEYWELL HOME Mounting Flange Thermowell, Copper, 3/4 in External Thread

The HONEYWELL HOME Immersion Well is a Mounting Flange thermowell with a copper shank and copper connection material. It features a 3/4 in external thread size and supports a maximum insertion/bulb length of 3 in and…

SKU 3G-OTH-68688

Also listed as: 121371 M · 121371-M

Brand
HONEYWELL HOME
Item
Mounting Flange Thermowell, Copper, 3/4 in External Thread
Category
HVAC Thermowells
Available to Order
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

HONEYWELL HOME
Manufacturer Part Number
121371M
Type
Copper, Copper
Shank Material
Copper
Thermowell Type
Mounting Flange
Connection Material
Copper
External Thread Size
3/4 in
Maximum Insertion/Bulb Length
3 in, 3/8 in

Technical Documents

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HONEYWELL HOME Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The HONEYWELL HOME Immersion Well is a Mounting Flange thermowell with a copper shank and copper connection material. It features a 3/4 in external thread size and supports a maximum insertion/bulb length of 3 in and 3/8 in. This HVAC thermowell is identified by manufacturer part number 121371M.

Frequently Asked Questions

What is a HONEYWELL HOME immersion well thermowell used for?

A HONEYWELL HOME immersion well thermowell, like the 121371M mounting flange model, protects temperature sensors in HVAC systems. It allows accurate measurement of liquid or gas temperatures in pipes or tanks while shielding the sensor from pressure, corrosion, and flow. This copper version is suited for compatible fluid applications.

What are the specifications of the HONEYWELL HOME 121371M thermowell?

The HONEYWELL HOME 121371M is a mounting flange thermowell with a copper shank and copper connection material. It has a 3/4 in external thread size and supports a maximum insertion/bulb length of 3 in and 3/8 in. The manufacturer part number is 121371M.

Where to buy a HONEYWELL HOME 121371M thermowell worldwide?

3G Electric supplies the HONEYWELL HOME 121371M immersion well thermowell to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this copper mounting flange thermowell.

How to install a HONEYWELL HOME mounting flange thermowell?

Install the HONEYWELL HOME mounting flange thermowell by welding or bolting the flange to the pipe or tank wall. Ensure the thermowell is fully immersed in the process fluid. Use a compatible temperature sensor with a bulb length not exceeding 3 in or 3/8 in. Follow standard HVAC piping practices for sealing and support.

Used in

Common applications for HONEYWELL HOME
Residential HVAC — Honeywell Home TH115-A-120S/U thermostat for 7-day programmable temperature control in homes.
Light commercial buildings — Honeywell Home TL8230A1003 line-voltage thermostat for electric heating systems in offices.
Hydronic heating systems — Honeywell Home L4006E1117 immersion controller for high-limit temperature regulation in boilers.
Indoor air quality monitoring — Honeywell Home C7263A1008 air quality sensor for gas analysis in commercial facilities.
Furnace control — Honeywell Home ST9120U1011 timer controller for circulating fan timing in integrated furnace systems.
HVAC switching — Honeywell Home RA889A1001 switching relay for 24V AC control of zone valves or dampers.

HONEYWELL HOME Products

3G Electric supplies HONEYWELL HOME hvac thermowells. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
Copper thermowell with mounting flange and 1/2 in external thread. Designed to protect temperature sensors in HVAC systems, installed in pipes or tanks. Maximum insertion/bulb length of 1-1/2 in or 3 in
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Copper thermowell with mounting flange and 1/2 in external thread. Designed to protect temperature sensors in HVAC systems, installed in pipes or tanks. Maximum insertion/bulb length of 1-1/2 in or 3 in
Triple-function immersion controller combining circulator, high limit, and low limit functions. Vertical mounting orientation, adjustable low-limit differential temperature of 10°F to 25°F, includes auto/manual switch. Temperature range 130°F minimum to 240°F maximum. Used in hydronic heating systems for boiler temperature management
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Triple-function immersion controller combining circulator, high limit, and low limit functions. Vertical mounting orientation, adjustable low-limit differential temperature of 10°F to 25°F, includes auto/manual switch. Temperature range 130°F minimum to 240°F maximum. Used in hydronic heating systems for boiler temperature management
Triple function immersion controller for high-limit applications in hydronic heating systems. Features vertical mounting, adjustable low-limit differential from 10°F to 25°F, and includes auto/manual switch. Operates within 130°F to 240°F range at low voltage
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Triple function immersion controller for high-limit applications in hydronic heating systems. Features vertical mounting, adjustable low-limit differential from 10°F to 25°F, and includes auto/manual switch. Operates within 130°F to 240°F range at low voltage
Dual function immersion controller for hydronic heating systems, combining circulator, high limit, and low limit functions. Temperature range 100°F to 240°F with adjustable differential from 5°F to 30°F. Includes auto/manual switch. Designed for horizontal mounting
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Dual function immersion controller for hydronic heating systems, combining circulator, high limit, and low limit functions. Temperature range 100°F to 240°F with adjustable differential from 5°F to 30°F. Includes auto/manual switch. Designed for horizontal mounting
Triple-function immersion controller for high-limit applications in hydronic heating systems. Features 130°F minimum and 240°F maximum temperature range, adjustable low-limit differential from 10°F to 25°F, horizontal mounting, 5 switches, and includes auto/manual switch. Supports line volt/low volt switching
HONEYWELL HOME
Triple-function immersion controller for high-limit applications in hydronic heating systems. Features 130°F minimum and 240°F maximum temperature range, adjustable low-limit differential from 10°F to 25°F, horizontal mounting, 5 switches, and includes auto/manual switch. Supports line volt/low volt switching
Single-function immersion controller for circulator applications in hydronic heating systems. Adjustable differential temperature from 5°F to 30°F. Temperature range 100°F minimum to 240°F maximum. Includes auto/manual switch. Horizontal mounting orientation
HONEYWELL HOME
Single-function immersion controller for circulator applications in hydronic heating systems. Adjustable differential temperature from 5°F to 30°F. Temperature range 100°F minimum to 240°F maximum. Includes auto/manual switch. Horizontal mounting orientation

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Copper thermowell with mounting flange for temperature sensor protection in HVAC and process piping. Features a 3/4 in external thread, copper shank and connection, with maximum insertion/bulb length of 3 in and 3/8 in
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Copper thermowell with mounting flange for temperature sensor protection in HVAC and process piping. Features a 3/4 in external thread, copper shank and connection, with maximum insertion/bulb length of 3 in and 3/8 in
This copper thermowell features a mounting flange design for installation in HVAC systems. It accommodates temperature sensors or bulbs with a maximum insertion length of 3 in and a bulb diameter of 3/8 in. The 1/2 in external thread and copper construction provide corrosion resistance in pipe or tank applications
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This copper thermowell features a mounting flange design for installation in HVAC systems. It accommodates temperature sensors or bulbs with a maximum insertion length of 3 in and a bulb diameter of 3/8 in. The 1/2 in external thread and copper construction provide corrosion resistance in pipe or tank applications