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SPENCE 99J Threaded Thermowell, Brass, 12-1/2 in Insertion, 250 psi, 400°F - Temperature Regulator & Duct Sensor Thermowells
SPENCETemperature Regulator & Duct Sensor Thermowells

SPENCE 99J Threaded Thermowell, Brass, 12-1/2 in Insertion, 250 psi, 400°F

The SPENCE Threaded Thermowell: Brass (MPN 99J) is a temperature regulator and duct sensor thermowell designed for use with a 15 5/8 in stem length, 12 1/2 in insertion length, and 1 in stem diameter. It has a…

SKU 3G-OTH-179728

Brand
SPENCE
Item
99J Threaded Thermowell, Brass, 12-1/2 in Insertion, 250 psi, 400°F
Part Number
99J
Category
Temperature Regulator & Duct Sensor Thermowells
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Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

SPENCE
Manufacturer Part Number
99J
Type
For 15 5/8 in Stem Lg, For 1 in Stem Dia
Insertion Lg
12 1/2 in
Maximum Operating Pressure
250 psi
Maximum Operating Temperature
400°F

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

Product Description

The SPENCE Threaded Thermowell: Brass (MPN 99J) is a temperature regulator and duct sensor thermowell designed for use with a 15 5/8 in stem length, 12 1/2 in insertion length, and 1 in stem diameter. It has a maximum operating pressure of 250 psi and a maximum operating temperature of 400°F.

Frequently Asked Questions

What is the SPENCE threaded thermowell used for?

The SPENCE threaded thermowell (MPN 99J) is used to protect temperature sensors in industrial piping systems, such as steam or process lines. It allows accurate temperature measurement while shielding the sensor from high pressure, flow, and corrosive media. Common applications include HVAC ducts, boilers, and temperature regulation loops.

What are the specifications of the SPENCE threaded thermowell?

The SPENCE threaded thermowell (MPN 99J) is made of brass with a 15 5/8 in stem length, 12 1/2 in insertion length, and 1 in stem diameter. It has a maximum operating pressure of 250 psi and a maximum operating temperature of 400°F. It is designed for threaded installation in temperature regulator and duct sensor applications.

Where to buy the SPENCE threaded thermowell worldwide?

You can source the SPENCE threaded thermowell (MPN 99J) through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we provide reliable sourcing for this SPENCE component.

How to install a SPENCE threaded thermowell?

To install the SPENCE threaded thermowell, first ensure the process line is depressurized and cool. Apply thread sealant to the NPT threads, then hand-tighten the thermowell into the mating fitting. Use a wrench to snug it without over-torquing. Insert the temperature sensor fully into the thermowell and secure the connection. Always follow the manufacturer's guidelines for your specific sensor.

Used in

Common applications for SPENCE
Steam condensate removal in industrial process heating — SPENCE inverted-bucket steam traps (e.g., 85-CPG9)
Pressure reduction for steam distribution in commercial buildings — SPENCE D50A pressure regulators
Modulating control of steam flow in heat exchangers — SPENCE pneumatic globe control valves (e.g., K1TC811-36RA)
Air venting from steam mains and headers — SPENCE NAV-213 air vents
Condensate drainage in low-pressure steam heating systems — SPENCE 81S-C1E9 steam traps with strainer
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SPENCE Products

3G Electric supplies SPENCE temperature regulator & duct sensor thermowells. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Cross-referenced by specification & description
Cast iron general purpose pressure regulator with 3/8 in FNPT x FNPTF connections. Rated for 40 psi to 110 psi and 33°F to 400°F. Used to reduce and stabilize downstream pressure in steam, air, or liquid systems for industrial heating, process control, and plant utility lines
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Cast iron general purpose pressure regulator with 3/8 in FNPT x FNPTF connections. Rated for 40 psi to 110 psi and 33°F to 400°F. Used to reduce and stabilize downstream pressure in steam, air, or liquid systems for industrial heating, process control, and plant utility lines
Cast iron general purpose pressure regulator with 3/4 in FNPT x FNPTF connections. Reduces and maintains downstream pressure in steam, air, or liquid systems. Pressure range 2 psi to 20 psi; temperature range 33°F to 400°F
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Cast iron general purpose pressure regulator with 3/4 in FNPT x FNPTF connections. Reduces and maintains downstream pressure in steam, air, or liquid systems. Pressure range 2 psi to 20 psi; temperature range 33°F to 400°F
Cast iron general purpose pressure regulator with 1 1/4 in FNPT x FNPTF connections. Reduces and maintains downstream pressure in steam, air, or liquid systems. Pressure range 45 to 100 psi; temperature range 33°F to 400°F. Suitable for industrial heating, process control, and plant utility lines
SPENCE
Cast iron general purpose pressure regulator with 1 1/4 in FNPT x FNPTF connections. Reduces and maintains downstream pressure in steam, air, or liquid systems. Pressure range 45 to 100 psi; temperature range 33°F to 400°F. Suitable for industrial heating, process control, and plant utility lines

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