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Type
Accessories
An optional feature for the MAR and BOLR Series – thermal bypass and pressure relief features combined in one valve. Temperature bypass is activated (closes) when oil reaches a defined set point of 110° F and allows full oil flow through the heat exchanger. When the oil is cool, the valve is open to allow a partial flow bypass.
Function
TTP Thermal Bypass Valves ensure precise oil temperature control in hydraulic systems by routing cold oil around the heat exchanger during start up. This prevents overcooling, protects the cooler, and speeds up system warm-up for reliable, efficient operation
Thermostatically activated, these valves route partial, cold oil flow around the heat exchanger to limit backpressure and unwanted cooling of oil during cold start-up situations. When the oil is cold (<110°F, 43°C), the internal valve connection P-T is open directing flow around the cooler with minimum pressure loss and enabling the oil temperature to increase to operating temperature. Once this temperature is reached (>110°F, 43°C), the thermal wax element closes the P-T connection and full flow is directed through the heat exchanger. The integrated pressure relief valve, set at 60 PSI, also helps safeguard the cooler from occasional return-line flow surges.
- Temperature bypass of oil
- Allows faster oil temperature rise during cold start
- Pressure relief protects against flow surges
- External parts zinc plated and chromite free
- Eliminates the need to install external components saving time and money
• Activation Temperature: 110°F (43°C)
• Pressure Relief: 60 PSI
• Compatible Fluids: Hydraulic oil, lubricants
• Material: Zinc-plated, chromite-free steel.
What does a thermal bypass valve do in a hydraulic system?
A thermal bypass valve manages oil temperature by routing fluid around the cooler during cold starts. When the oil reaches 110°F (43°C), the valve closes and sends full flow through the heat exchanger for optimal cooling.
When should I use a thermal bypass valve with a heat exchanger?
It’s ideal for systems exposed to cold environments or frequent start ups. The valve prevents overcooling, reduces backpressure, and helps hydraulic oil reach operating temperature faster.
How do I choose the right thermal bypass valve for my hydraulic system?
Select a valve based on your system’s flow rate, oil viscosity, and temperature control needs. TTP’s valves activate at 110°F (43°C) and include a built-in 60 PSI pressure relief to protect against flow surges.
What hydraulic coolers are compatible with TTP’s thermal bypass valve?
TTP’s thermal bypass valve integrates seamlessly with MA, MAR, and BOLR Series hydraulic oil coolers to create a complete, temperature-controlled cooling system.
Can a thermal bypass valve improve hydraulic efficiency?
Yes. By maintaining optimal oil temperature and preventing cold-start stress, the valve reduces energy loss, minimizes component wear, and extends system life.
How does the integrated pressure relief feature protect the cooler?
The valve’s 60 PSI relief function safeguards the cooler from pressure spikes in the return line, maintaining safe, consistent operation during flow surges.