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Product / Pressure Washers / 85.300.024

1/2" MNPT 2,000PSI 62.7°C / 145°F Thermal Valve

1/2" MNPT 2,000PSI 62.7°C / 145°F Thermal Valve

Specifications

PSI

2,000

MAX TEMPRATURE

62.7°C / 145°F

Inlet Size

1/2" MNPT

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PRODUCT

DESCRIPTION

Automatic Thermal Protection for Pressure Washer Systems

The 1/2" MNPT 2,000 PSI 62.7°C / 145°F Thermal Valve provides reliable overheat protection for pressure washer pumps and systems. Designed to automatically release hot water when temperatures reach 62.7°C (145°F), this valve prevents pump damage caused by recirculating heated water during bypass or idle operation. By maintaining safe operating temperatures, it ensures long-term performance and efficiency for your equipment.

Reliable Protection Against Overheating

When your pressure washer runs in bypass mode, water can quickly heat up within the pump, leading to seal and component failure. This thermal relief valve activates automatically at the preset temperature, releasing overheated water to allow cool water to enter. The result is consistent protection that extends pump life and reduces maintenance costs.

Heavy-Duty Brass Construction

Constructed from high-quality brass and stainless steel components, the 1/2" MNPT Thermal Valve is built for durability and dependable performance under continuous use. Rated for pressures up to 2,000 PSI, it resists corrosion, heat, and wear, making it ideal for demanding residential, commercial, and industrial cleaning applications. The 1/2" MNPT male threads provide a secure, leak-free fit compatible with standard pump outlets and fittings.

Easy, Maintenance-Free Operation

Compact and simple to install, this thermal valve requires no tools or adjustments. It resets automatically once the water cools, delivering continuous protection without manual intervention—keeping your pressure washer ready to perform at all times.

Applications

  • Prevents overheating in pressure washer pumps

  • Automatically vents hot water during bypass operation

  • Suitable for residential, commercial, and industrial systems

  • Compatible with most standard 1/2" MNPT pump fittings and accessories

Features:

  • 1/2" MNPT Thermal Relief Valve rated for 2,000 PSI

  • Opens automatically at 62.7°C (145°F)

  • Protects pump components from thermal damage

  • Brass and stainless steel construction for long-term use

  • Corrosion-resistant, heavy-duty design

  • Maintenance-free operation with automatic reset

Performance You Can Depend On

The 1/2" MNPT 2,000 PSI 62.7°C / 145°F Thermal Valve delivers consistent, automatic protection for your pressure washer system. Built to handle tough environments, it ensures your pump stays cool, safe, and reliable—job after job.

The actual product may vary from the images shown on the website.

Frequently Asked Questions about Pressure Washers

How to store a pressure washer?

To ensure the durability of your heavy duty pressure washer:

  • Empty the gas tank to prevent fuel from degrading or clogging the engine.
  • Empty the pump and hoses of any remaining water.
  • Perform necessary maintenance before storage.
  • Store in a dry area.
  • Cover.

What is a pressure washer?

A power washer is a cleaning machine that uses a gasoline engine to power a high pressure water pump and nozzle. It’s used to clean driveways, decks, vehicles, outdoor furniture and more by spraying water at high PSI to remove dirt, grime, mold and other debris.Many models also come with a detergent tank for added cleaning power.

How does a power washer work?

A power washer works by drawing water from a connected hose and pumping it through a high pressure nozzle. The gas engine powers the pump which pressurizes the water and then expels it through the nozzle at high speed to clean the surface. The water pressure is measured in PSI (pounds per square inch) and the flow rate is measured in GPM (gallons per minute).Many models also feature adjustable water pressure settings to cater to different cleaning needs. BE makes pressure washing easy with models available for light jobs and heavy duty commercial cleaning projects.

Gas vs Electric power washers?

The main difference is that a gas pressure washer, known for its cleaning power, is powered by a gasoline engine, making it more powerful and portable, while an electric pressure washer is powered by electricity and is generally quieter and lighter.

Gas pressure washers are for heavy duty and large areas due to their durability, whereas electric pressure washers are for smaller jobs.

Your BE electric pressure washer is perfect for smaller jobs and built for portability, and we offer a wide range of electric models. Included with our electric models is a long extension cord for use anywhere around your house.

What to consider?

When choosing a gas pressure washer consider:

  • Pressure (PSI): More PSI means more cleaning power but also more potential for damaging delicate surfaces.
  • Flow Rate (GPM): More GPM means faster cleaning as more water is dispensed.
  • Engine Power: Bigger engines mean more durability and power.
  • Portability: Weight, handle design and wheel size for easier to move.
  • Nozzles: Multiple spray nozzles to adjust the spray pattern for different tasks.
  • Adjustable Nozzle: Allows for fine-tuning the spray intensity and pattern for various cleaning needs.

How much pressure do I need for?

The required pressure (PSI) and cleaning power depend on the surface you’re cleaning:

  • Light duty (car washing, outdoor furniture): 1,300-1,800 PSI.
  • Medium duty (patios, fences, decks): 2,000-3,000 PSI.
  • Heavy duty (driveways, brick walls, large equipment): 3,000+ PSI.

Many pressure washers come with adjustable pressure settings to handle different cleaning tasks effectively.

Can a pressure washing damage surfaces?

Yes, a power washer can damage surfaces if used incorrectly. High pressure water can strip paint, dent soft surfaces or even cause structural damage if the pressure is too high or the nozzle is held too close to the surface. Always use the right PSI for the material you’re cleaning and keep a safe distance from delicate surfaces.

To prevent damage, consider using a model with adjustable pressure settings.

How to maintain your pressure washer?

To ensure the durability and smooth operation of a pressure washer:

  • Change the oil as per manufacturer’s instructions.
  • Clean or replace the air filter to ensure good airflow.
  • Inspect and clean the nozzle regularly to prevent clogs.
  • Drain the gas tank if you’re storing the washer for a long time.
  • Check the hoses for leaks or damage and replace them if needed.
  • Follow regular maintenance requirements to keep the washer in optimal condition.

Can I use a pressure washer in cold weather and low water temperature?

You can use a pressure washer in cold weather but it’s more difficult. The water flow rate in the hoses and pump can freeze and damage the equipment. If you plan to use your pressure washer in cold temperatures make sure to winterize it and store it in a warm area when not in use. You can also use anti-freeze solutions for pressure washers.

Some models are designed to use hot water, which can be particularly effective for cleaning in cold weather.

Do I need any accessories?

Common accessories for power washers: