Single Set Point Temperature Switch — Fan/Cooler Control, 303 Stainless, 1,000 PSI

The Thermal Transfer Products Single Set Point Switch is a temperature-actuated electrical switch used to control a cooling fan, alarm, or other device based on fluid temperature. Its super-sensitive probe senses the oil or coolant temperature and, on temperature rise, closes its electrical contacts at a preset set point — switching the fan on for cooling and off again as the fluid cools, without any separate controller.

The sensor is normally open and closes on temperature rise. It’s housed in a rugged 303 stainless steel body rated for operating pressures up to 1,000 PSI, so it can thread directly into a pressurized cooler port or hydraulic line. Contacts are rated 6 amps at 120 VAC and 4 amps at 240 VAC, suitable for switching a fan motor relay or contactor.

The Single Set Point Switch pairs naturally with TTP’s AC-fan-driven coolers (such as the AO, AOC, AOF, and AOVH Series) to provide simple, automatic on/off fan control. TTP Application Engineering can help select the correct set-point temperature for your system.

Consult catalog for additional sizes and technical information.

Electronic Temperature Control with Remote Bulb Sensor (AC) — Heating or Cooling, Adjustable

The Electronic Temperature Control & Bulb Well Assembly (AC) provides accurate, adjustable temperature control for cooling (or heating) systems, pairing electronic precision with remote-sensing capability. It’s used to switch a fan, pump, or other device based on fluid temperature — for example, cycling a cooler’s AC fan to hold a target oil temperature.

The control operates in either heating or cooling mode with an adjustable differential, so you can tune both the set point and the on/off spread to your application. Its interchangeable temperature sensor mounts remotely (via the included bulb well) to read fluid temperature away from the control itself, and the line-voltage, single-stage design provides a single-pole, double-throw (SPDT) relay output with LED status indication for straightforward integration.

Housed in a NEMA 1 high-impact plastic enclosure, it mounts on a surface or DIN rail for flexible panel or field installation. It’s well suited to controlling AC-fan-driven TTP coolers (AO, AOC, AOF, AOVH) where adjustable, more precise temperature control is needed than a fixed single-set-point switch provides. TTP Application Engineering can help configure it for your system.

Consult catalog for additional sizes and technical information.

Thermal Bypass Valve — Return-Line Oil Temperature Control for Hydraulic & Hydrostatic Circuits

The Thermal Transfer Products Thermal Bypass Valve is a return-line temperature-control valve for hydraulic and hydrostatic drive circuits that require fast warm-up, controlled fluid temperature, and low return-line back pressure. Installed in the return line of a hydraulic circuit that uses an oil cooler, it automatically modulates fluid temperature by shifting return-line flow through the cooler once the oil is warm, or bypassing it directly to the reservoir during cold start-up.

When the oil is cold (below about 110°F / 43°C), the valve directs flow around the cooler with minimum pressure loss, letting the oil reach operating temperature faster and preventing overcooling. Once the oil warms past the set point, the thermal element closes the bypass and sends full flow through the cooler. A built-in pressure relief function (set at 60 PSI) automatically relieves excess pressure to the reservoir if the cooler becomes restricted or the pressure drop climbs too high — protecting the cooler from cold-oil surges and blockage.

The valve activates at a nominal 110°F (43°C) and integrates directly with TTP’s MA, MAR, and BOLR Series hydraulic oil coolers to form a complete, temperature-controlled cooling system. By holding oil at its optimal temperature and eliminating cold-start stress, it reduces energy loss, minimizes component wear, and extends system life. TTP Application Engineering can help select the right valve for your flow rate, oil viscosity, and temperature-control needs.

Consult catalog for additional sizes and technical information.

Our heavy duty thermostatic valves operate in a wide range of temperatures and in any position. Valves are compact, self-contained and tamper-proof. Acceptable for oil or water service and available with ½”, ¾”, 1″, 1½” & 2″ NPT Ports.

Consult catalog for additional sizes and technical information.

Forged Brass Y-Strainer — Pipeline Debris Protection for Coolers & Valves

The Y-Strainer is a heavy-duty inline pipeline strainer that protects heat exchangers, temperature-control valves, pumps, and other equipment from pipe scale, weld slag, and debris carried in the fluid line. Installed upstream of the component it protects, it captures particulate in a stainless steel screen that’s easily removed and cleaned through the screwed cap — inexpensive insurance against fouling and premature wear.

Constructed of forged brass for strength and corrosion resistance, the strainer has an operating temperature range of -10°F to 250°F and is suitable for 600 WPG (water, oil, gas) service and 150 PSI WSP (working steam pressure), with a female × female threaded connection. The screwed caps are straight-threaded with PTFE gaskets for a reliable seal and simple servicing.

Screen selection scales with line size: a 304 stainless steel 50-mesh screen on ¼″ to 1″ sizes, and a 304 stainless steel 20-mesh screen on 1¼″ to 2″ sizes. The Y-Strainer pairs naturally with TTP’s water-cooled heat exchangers and control valves, protecting them from line debris in hydraulic, cooling-water, and process circuits.

Consult catalog for additional sizes and technical information.

Modulating Water Regulating Valve — Self-Powered Oil Temperature Control

The Thermal Transfer Products modulating water regulating valve automatically controls the flow of cooling water to a water-cooled heat exchanger to maintain a desired exiting oil temperature. As the oil temperature rises, the valve’s sensing bulb opens the valve to admit more cooling water; as it falls, the valve throttles back — holding a stable oil outlet temperature without wasting water. Because it’s thermally self-actuated, no external power source, air supply, or control wiring is required.

Every stock valve ships with a drilled and tapped internal bypass in the regulator body, fitted with a solid plug for 100% shut-off. A drilled orifice plug is packed with each valve for field installation when a continuous minimum water flow is required — for example, to prevent the exchanger from ever fully deadheading. This lets you configure the valve for either full shut-off or maintained minimum flow, on site, without extra parts.

The valve is ideal for water-cooled cooling circuits using TTP’s shell-and-tube (HC, HCR, B/SB, CA, EK, EC, UC/UCV) and brazed plate (BPSW, BPW) heat exchangers, where it conserves cooling water and stabilizes oil temperature. Note: these valves are not for salt water service. TTP Application Engineering can help select the correct valve and temperature setting for your system.