
SPENCE
Frequently asked questions
Common questions about SPENCE from 3G Electric.
What is the difference between a SPENCE reverse-acting temperature regulator and a direct-acting regulator?
A SPENCE reverse-acting temperature regulator opens on a temperature drop and closes on a temperature rise. This means that if the controlled temperature falls below the setpoint, the valve allows more steam to flow to increase heating. Direct-acting regulators operate in the opposite manner, closing on a temperature drop. The reverse-acting design is often used in heating applications where a fail-safe open position on temperature loss is desired. SPENCE offers reverse-acting models in bronze with various pipe connection sizes, such as 1/2 in, 3/4 in, 1 in, 1 1/4 in, and 2 in.
What components are included in the SPENCE steam trap repair kit for model 4NU80?
The SPENCE steam trap repair kit (manufacturer part number 07-04164-00) contains internal components for servicing the model 4NU80 steam trap. The kit is designed to replace worn or failed parts such as valve and seat assemblies, gaskets, and other internal mechanisms. It allows maintenance personnel to restore the trap to proper operation without replacing the entire trap body. This kit is used in industrial steam systems for process heating, condensate removal, and energy management. 3G Electric supplies this kit as a genuine SPENCE replacement part.
What pipe connection sizes are available for SPENCE reverse-acting temperature regulators?
SPENCE reverse-acting temperature regulators are available with pipe connection sizes including 1/2 in, 3/4 in, 1 in, 1 1/4 in, and 2 in. These sizes cover a range of steam line capacities. The regulators have bronze bodies and are intended for steam media. The connection size should be selected based on the steam flow rate and pressure drop requirements of the application. 3G Electric stocks multiple part numbers corresponding to these sizes, such as 2020AC-GQD (1/2 in), 2020TD-GQD (3/4 in), 2020TE-GQK (1 in), 2020TF-GQD (1 1/4 in), and 2020TH-GQD (2 in).
What materials are used in SPENCE temperature regulator bodies?
SPENCE reverse-acting temperature regulators in the current catalog feature bronze bodies. Bronze is commonly used in steam service for its corrosion resistance and mechanical strength at elevated temperatures. The internal components, such as the valve plug and seat, are typically made from materials suitable for steam and condensate exposure. The specific material grades are defined by the manufacturer's specifications. For applications with higher pressures or temperatures, other SPENCE models may use cast iron or steel bodies. Technical buyers should verify the material compatibility with their steam conditions.
How does a SPENCE steam trap repair kit help with maintenance?
A SPENCE steam trap repair kit provides the internal components needed to rebuild a steam trap, such as the model 4NU80. Instead of replacing the entire trap, maintenance teams can install the kit to restore the trap's function. This reduces material costs and downtime, as the existing piping and body remain in place. The kit includes parts like the valve mechanism, seat, and gaskets. Regular servicing with repair kits helps maintain condensate removal efficiency and prevents steam loss. 3G Electric supplies these kits for planned maintenance programs.
What are typical applications for SPENCE temperature regulators?
SPENCE reverse-acting temperature regulators are used in industrial steam systems for process heating, heat exchangers, storage tanks, and other applications where steam flow must be modulated to maintain a set temperature. They are suitable for heating water, oil, or other fluids in jacketed vessels or coils. The reverse-acting design is often chosen for fail-safe heating, where the valve opens on temperature loss. These regulators are also used in HVAC and district heating systems. The bronze construction is appropriate for many steam and condensate environments. 3G Electric supplies these regulators for global industrial use.
