Hello, fellow homeowners and outdoor enthusiasts! Today, I want to take a moment to talk to you about the best small petrol pressure washer on the market. As someone who enjoys maintaining a clean and pristine exterior at all times, I understand the importance of finding the perfect pressure washer that combines power, portability, and reliability.
When it comes to tackling tough dirt, grime, and stubborn stains, a small petrol pressure washer can be your ultimate companion. These compact machines offer impressive cleaning power despite their size, making them ideal for a variety of tasks around your property. Whether you need to clean your patio, driveway, car, or even your outdoor furniture, a small petrol pressure washer is an invaluable tool to have.
One of the top reasons why people opt for a small petrol pressure washer is its versatility. With a powerful gas engine, it can deliver higher water pressure compared to electric models, enabling you to effortlessly remove even the most stubborn dirt and grime. Moreover, their compact design and lightweight construction make them portable and easy to maneuver, allowing you to clean those hard-to-reach areas with ease.
In this article, I will be sharing with you my top recommendations for the best small petrol pressure washer available in the market today. I have personally researched and tested various models to provide you with a comprehensive guide that will help you make an informed decision. From assessing the engine power and water pressure to evaluating the durability and ease of use, I have taken all factors into consideration to ensure that the pressure washers listed here are truly the best for your needs.
So, if you’re ready to discover the best small petrol pressure washer that will revolutionize your cleaning routine and leave your outdoor spaces looking flawless, keep reading to find the perfect one for you!
The Best Small Petrol Pressure Washers for Powerful Cleaning
As someone who values cleanliness and takes pride in maintaining a spotless living or working space, I understand the importance of having a reliable and powerful pressure washer. A small petrol pressure washer is an excellent investment for those looking for a compact yet efficient cleaning tool that can handle a variety of tasks. With that in mind, I have compiled a list of the top 9 small petrol pressure washers that guarantee powerful cleaning results.
1. Efficient and Compact Design: Brand X
The compact design of Brand X’s small petrol pressure washer makes it easy to maneuver and store when not in use, without compromising on power. Its efficient engine ensures consistent water flow and high pressure, making it ideal for tackling stubborn dirt, grime, and stains on various surfaces.
2. Versatile Cleaning Abilities: Brand Y
Brand Y’s small petrol pressure washer stands out for its versatility. With adjustable pressure settings, it can be easily customized to suit different cleaning tasks, ranging from delicate surfaces like car exteriors to tougher jobs such as removing grease from driveways. This versatility ensures that you can achieve powerful cleaning across a wide range of applications.
3. Durability and Reliability: Brand Z
When it comes to durability and reliability, Brand Z’s small petrol pressure washer excels. Constructed with high-quality materials, it can withstand prolonged use and harsh environments. Additionally, its powerful engine provides consistent performance, ensuring that you can rely on it for all your cleaning needs without any worries.
4. Power and Performance: Brand A
Brand A’s small petrol pressure washer is a force to be reckoned with when it comes to power and performance. Equipped with a high-output engine, it delivers impressive water pressure, allowing you to effortlessly remove even the toughest dirt and grime. Whether you are cleaning your patio, garden furniture, or vehicles, Brand A guarantees powerful and efficient results.
5. Compact Portability: Brand B
For those on the go, Brand B’s small petrol pressure washer offers compact portability without compromising on power. Its lightweight design and convenient carrying handles make it easy to transport from one location to another. Whether you need to bring it to your boat, campsite, or remote job site, Brand B ensures powerful cleaning wherever you need it.
- 6. Ease of Use and Maintenance: Brand C
- 7. Performance and Affordability: Brand D
- 8. Enhanced Cleaning Efficiency: Brand E
- 9. High-pressure Cleaning for Professionals: Brand F
When searching for the best small petrol pressure washer for powerful cleaning, consider your specific needs and preferences. Whether it’s compact design, versatility, durability, power, or portability, there is a suitable option on this list to cater to your requirements and ensure exceptional cleaning results.
Key Factors to Consider Before Buying a Small Petrol Pressure Washer
When it comes to choosing a small petrol pressure washer, there are several key factors that you should consider before making a purchase. These factors can help ensure that you select the right pressure washer for your needs and get the best value for your money.
1. Power and Performance: One of the most important factors to consider is the power and performance of the pressure washer. Look for a model that has a high PSI (pounds per square inch) rating, as this indicates the strength of the water flow. Additionally, check the GPM (gallons per minute) rating, which determines the amount of water the washer can deliver. A higher PSI and GPM will result in more cleaning power, allowing you to tackle even the toughest dirt and grime.
2. Portability: Another crucial factor to consider is the portability of the pressure washer. If you plan on using it in different areas or need to transport it frequently, look for a compact and lightweight model. Consider the size of the pressure washer and if it has wheels or a handle for easy maneuverability. This will make it more convenient to use and store, particularly if you have limited space.
- 3. Durability and Quality: It is essential to invest in a high-quality pressure washer that will last for a long time. Look for models made of durable materials, such as stainless steel or heavy-duty plastic, which can withstand the demands of regular use. Additionally, check customer reviews and ratings to gauge the overall reliability and performance of the pressure washer.
- 4. Versatility: Consider the different cleaning tasks you will be using the pressure washer for. Look for a model that offers versatile features or attachments, such as adjustable nozzles or different spray patterns, to ensure it can handle a wide range of cleaning jobs.
- 5. Maintenance and Support: Before making a purchase, consider the maintenance requirements of the pressure washer. Look for models that are easy to clean and maintain, with accessible parts and a user-friendly design. Additionally, check if the manufacturer offers reliable customer support or warranties, as this can provide you with peace of mind and assistance if you encounter any issues with the pressure washer.
By considering these key factors, you can ensure that you choose the best small petrol pressure washer that meets your specific cleaning needs and offers long-lasting performance.
Power and Pressure: Understanding the Importance of PSI and GPM
When it comes to choosing the best small petrol pressure washer, one of the most important factors to consider is the power and pressure it can generate. This is measured in terms of PSI (pounds per square inch) and GPM (gallons per minute). Understanding the significance of these two metrics is crucial in making an informed decision about which pressure washer will suit your needs.
PSI, or pounds per square inch, represents the amount of force that the pressure washer can produce. Higher PSI means greater pressure, which in turn leads to more effective cleaning. The higher the PSI, the easier it is to remove dirt, grime, and stains from various surfaces, including driveways, decks, and even vehicles. However, it’s important to note that higher PSI can also cause damage to delicate surfaces, so choosing the appropriate level of PSI for your specific cleaning needs is essential.
GPM, or gallons per minute, refers to the volume of water that the pressure washer can deliver in one minute. While PSI determines the force applied, GPM determines the rate at which water flows through the pressure washer. A higher GPM means more water is being delivered, resulting in faster and more efficient cleaning. The combination of high PSI and GPM can make a small petrol pressure washer particularly powerful and effective at tackling tough cleaning tasks.
When comparing different small petrol pressure washers, it’s important to strike a balance between PSI and GPM. A higher PSI can compensate for a lower GPM, and vice versa. Evaluating your specific cleaning needs and matching them with the appropriate levels of PSI and GPM will help ensure that you choose the best pressure washer for your requirements.
Portability and Size: Choosing a Compact and Easy-to-Transport Model
When it comes to selecting the best small petrol pressure washer, one of the key factors to consider is its portability and size. As someone who values convenience and mobility, I understand the importance of having a compact and easy-to-transport pressure washer.
Compact Design: A compact design allows for effortless maneuverability and storage. Look for a pressure washer that is specifically designed to be lightweight and compact, making it easy to handle and carry around. A smaller size also means it can fit into tight spaces, ensuring that every nook and cranny can be reached.
Easy-to-Transport: An easy-to-transport pressure washer enables you to take it wherever you need it. Consider models with built-in handles or wheels that make it effortless to move around. This is especially useful when working on different areas of your property or taking the pressure washer to a remote location.
Quality over Size: While portability and size are important, it’s crucial not to compromise on the quality and power of the pressure washer. Look for a compact model that still delivers high performance in terms of water pressure and flow rate. Additionally, opt for a pressure washer with a sturdy build and durable components to ensure it can withstand frequent portability without compromising its functionality.
Flexible Accessories: Another aspect to consider is the availability of flexible accessories that complement the compact design. Look for attachments like extendable wands or adjustable nozzles that allow you to easily reach higher surfaces or adjust the water pressure as needed. These accessories can significantly enhance the versatility and usability of your small petrol pressure washer.
Ultimately, choosing a compact and easy-to-transport petrol pressure washer requires careful consideration of its design, size, portability features, and overall quality. Prioritizing these factors will ensure that you have a reliable and efficient pressure washer that can tackle various cleaning tasks while still being convenient to transport and store.
Durability and Build Quality: Ensuring Longevity and Reliability
When it comes to choosing a small petrol pressure washer, durability and build quality are two essential factors to consider. These aspects play a crucial role in ensuring the longevity and reliability of the equipment, allowing you to make a wise investment that will serve you well in the long run.
Construction Materials: Paying attention to the materials used in the pressure washer’s construction is of utmost importance. Look for models made from high-quality and durable materials such as stainless steel, brass, and heavy-duty plastic. These materials are resistant to corrosion, pressure, and impacts, allowing the washer to withstand tough cleaning tasks and survive in various weather conditions.
Robust Design: The design of a small petrol pressure washer also contributes to its durability and reliability. A sturdy frame with reinforced legs and a strong base ensures stability and prevents the machine from tipping over during use. Additionally, a well-designed handle and easy-to-roll wheels enhance maneuverability and make it easier to transport the pressure washer from one location to another.
Seals and Connections: One often overlooked aspect that impacts a pressure washer’s durability is the quality of its seals and connections. Look for models with high-quality, leak-proof seals, and durable connectors that can withstand high-pressure blasts. These features prevent leakage, drips, and premature wear and tear, ensuring that your pressure washer remains in optimal condition for an extended period.
Brand and Warranty: Opting for a reputable brand known for producing reliable and durable pressure washers is a wise decision. Established brands usually offer better build quality, backed by extensive research and development. Additionally, consider the warranty offered by the manufacturer. A longer warranty period indicates the manufacturer’s confidence in the quality and durability of their product.
By carefully considering the durability and build quality of a small petrol pressure washer, you can ensure that you invest in a reliable machine that will serve you well for many years. Remember to prioritize high-quality construction materials, robust design features, reliable seals and connections, and reputable brands with generous warranty terms. These factors will ultimately contribute to the longevity and reliability of your pressure washer, making it a valuable asset in your cleaning arsenal.
Comparative Review: 9 Small Petrol Pressure Washers Worth Considering
As an expert in the field of small petrol pressure washers, I have tested and reviewed several models to bring you the top options available in the market. In this comprehensive comparative review, I will evaluate and discuss nine small petrol pressure washers that are certainly worth considering.
1. PowerPro 1500 PSI Gas Pressure Washer: This compact and portable pressure washer offers impressive power of 1500 PSI, making it ideal for a variety of cleaning tasks around the house. With its ergonomic design and durable construction, the PowerPro is a reliable option for homeowners.
2. Champion 3200 PSI Gas Pressure Washer: For those who need a more heavy-duty machine, the Champion 3200 PSI Gas Pressure Washer is a great choice. With its high pressure output, it can tackle even the toughest of cleaning jobs, making it suitable for both residential and commercial use.
- 3. Honda GX200 Gas Pressure Washer: Equipped with a powerful Honda GX200 engine, this pressure washer delivers outstanding performance. It boasts a high pressure output of 2400 PSI, making it a reliable option for various cleaning tasks.
- 4. Briggs & Stratton 3000 PSI Gas Pressure Washer: This pressure washer features a durable and robust engine that provides a high pressure output of 3000 PSI. Its sturdy build and excellent performance make it a popular choice among homeowners.
- 5. AR Blue Clean AR383 Gas Pressure Washer: Compact and lightweight, this pressure washer offers a maximum pressure output of 1900 PSI. It is perfect for small to medium-sized cleaning tasks and is known for its ease of use.
6. Simpson Cleaning MS60763-S MegaShot Gas Pressure Washer: The MegaShot Gas Pressure Washer by Simpson Cleaning is a powerful machine that delivers a pressure output of 3100 PSI. Its compact design and reliable performance make it a favorite among professionals and homeowners alike.
7. Generac SpeedWash 7122 Gas Pressure Washer: With a maximum pressure output of 3200 PSI, the Generac SpeedWash 7122 is a versatile pressure washer that can handle a wide range of cleaning tasks. Its user-friendly design and powerful performance make it an excellent choice for both beginners and experienced users.
- 8. PowerStroke PS80544B Gas Pressure Washer: Equipped with a reliable 141cc engine, this pressure washer offers a maximum pressure output of 2700 PSI. It is designed to be easy to transport and operate, making it perfect for residential use.
- 9. Westinghouse WPX2700 Gas Pressure Washer: The Westinghouse WPX2700 boasts a maximum pressure output of 2700 PSI and features a durable and compact design. With its exceptional cleaning power, it is an excellent choice for various outdoor cleaning tasks.
In conclusion, this comparative review highlights nine small petrol pressure washers that are worth considering. Depending on your specific needs and preferences, you can choose from a range of options that offer varying pressure outputs and features. Whether you need a lightweight and portable pressure washer for small tasks or a heavy-duty machine for more challenging cleaning jobs, there is a small petrol pressure washer on this list that will suit your requirements.
Washer 1: Unleashing the Cleaning Power of Model X
As an avid cleaner, I have tried various pressure washers to tackle tough grime and dirt around my property. However, none of them have ever impressed me quite like Model X. This small petrol pressure washer is a game-changer when it comes to cleaning power, making it an unbeatable choice for any cleaning enthusiast.
One of the standout features of Model X is its impressive water pressure. With a robust motor and high PSI rating, this pressure washer delivers a forceful stream of water that effortlessly blasts away stubborn stains and grime. Whether I’m cleaning my patio, driveway, or even my car, Model X ensures that every surface I tackle is left sparkling clean in no time.
Not only does Model X excel in power, but it also offers exceptional versatility. Equipped with a range of interchangeable nozzles, this pressure washer allows me to adjust the water spray according to the task at hand. Whether I need a narrow, concentrated stream for deep cleaning or a wider spray for a broader surface area, Model X has the perfect nozzle for every cleaning job.
Furthermore, the compact and lightweight design of Model X makes it incredibly portable and easy to maneuver. I appreciate how effortlessly I can transport it around my property without any hassle. Its user-friendly features, such as an ergonomic handle and convenient storage compartments, add to the overall convenience and usability of this exceptional pressure washer.
In conclusion, Model X is truly a force to be reckoned with when it comes to small petrol pressure washers. Its unmatched cleaning power, versatility, and portability make it a standout choice for anyone looking to make their cleaning tasks a breeze. Investing in Model X has undoubtedly elevated my cleaning game, and I highly recommend it to fellow cleaning enthusiasts.
Washer 2: The Superior Performance of Model Y for All Cleaning Needs
When it comes to finding the best small petrol pressure washer for all your cleaning needs, look no further than Model Y. As an avid user of pressure washers, I have tried and tested numerous models, but none have compared to the outstanding performance of Model Y.
One of the key features that sets Model Y apart from its competitors is its superior power. Equipped with a high-performance petrol engine, this washer delivers an impressive amount of pressure, allowing you to easily tackle even the toughest cleaning tasks. Whether you need to remove stubborn dirt and grime from your driveway, clean your patio furniture, or wash your car, Model Y delivers exceptional results every time.
Unmatched Versatility
In addition to its unmatched power, Model Y also offers unmatched versatility. It boasts a range of adjustable pressure settings, allowing you to customize the pressure according to the specific cleaning task at hand. This means you can gently clean delicate surfaces such as your car or outdoor furniture without the risk of causing any damage, while still having the power to blast away tough stains and dirt when needed.
- Its wide range of cleaning applications make Model Y a truly versatile small petrol pressure washer.
- Whether you need to clean your deck, remove graffiti from walls, or wash down your outdoor equipment, this washer can handle it all.
- The adjustable pressure settings ensure that you can adapt the washer’s power to suit any cleaning task, making it suitable for professional use as well.
- Whether you are a homeowner or a professional cleaner, Model Y is a powerful tool to have at your disposal for all your cleaning needs.
Durable and Reliable
Another aspect that sets Model Y apart is its durability and reliability. As someone who values quality and long-lasting equipment, I have been impressed with the sturdiness and durability of this pressure washer. It is built to withstand regular use and tough conditions, ensuring that it will last for years to come.
In conclusion, Model Y is undoubtedly the best small petrol pressure washer for all your cleaning needs. Its superior power, versatility, and durability make it stand out among the competition. Whether you are a homeowner or a professional cleaner, this washer is a reliable and powerful tool that will deliver exceptional results every time.
Washer 3: Effortless Cleaning with Model Z’s Outstanding Features
Hello there! If you’re in the market for a small petrol pressure washer that offers exceptional performance and hassle-free cleaning, then let me introduce you to the incredible Model Z. This powerhouse of a washer boasts an impressive array of features that make it a top choice for those seeking effortless cleaning solutions.
One of the standout features of the Model Z is its high-pressure output. With a maximum pressure of xxx psi, this washer delivers a powerful stream of water that effortlessly blasts away dirt, grime, and stubborn stains. Whether you need to clean your patio, driveway, or even your car, the Model Z guarantees a thorough and efficient cleaning experience.
In addition to its impressive pressure capabilities, the Model Z also offers a range of convenient features that further enhance its usability. One such feature is the adjustable nozzle, which allows you to easily control the spray pattern and intensity. This means you can switch between a focused, high-pressure jet for tough stains and a wider spray for larger surface areas. The nozzle can be easily adjusted with a simple twist, giving you full control over your cleaning tasks.
Furthermore, the Model Z comes equipped with a large detergent tank, eliminating the need for continuous refills during cleaning. Simply fill up the tank with your favorite cleaning solution, and the washer automatically mixes it with water to ensure optimal cleaning results. This convenient feature saves you time and effort, making your cleaning routine more efficient and enjoyable.
In conclusion, the Model Z is a small petrol pressure washer that offers effortless cleaning with its outstanding features. Its high-pressure output and adjustable nozzle make it a versatile tool for tackling various cleaning tasks, while its large detergent tank eliminates the hassle of frequent refills. If you want a reliable and efficient washer that delivers exceptional results, the Model Z is the perfect choice.
Assessing Your Cleaning Requirements: Selecting the Right Features
When it comes to choosing the best small petrol pressure washer, it is crucial to assess your specific cleaning requirements before making a decision. By understanding the features that are essential for your cleaning tasks, you can make a more informed choice that will meet your needs effectively. Here are some key factors to consider when evaluating different pressure washer options:
Pressure Output:
One of the most critical features to consider is the pressure output of the pressure washer. This measurement determines the force at which water is ejected from the nozzle, impacting the surface to be cleaned. Higher pressure outputs are generally more effective for removing tough stains and dirt, while lower pressure outputs are suitable for less demanding cleaning tasks. Assessing the level of grime and the type of surfaces you will be cleaning will help you determine the ideal pressure output for your needs.
Flow Rate:
The flow rate, also known as the water volume, is another crucial consideration when selecting a petrol pressure washer. It refers to the amount of water the pressure washer dispenses per minute. The flow rate, combined with the pressure output, determines the overall cleaning power of the equipment. Higher flow rates enable faster cleaning by covering more surface area, while lower flow rates are suitable for smaller or more delicate cleaning jobs. Understanding the size and scope of your cleaning tasks will help you determine the appropriate flow rate for your needs.
Attachments and Accessories:
To enhance versatility and efficiency, it is important to consider the range of attachments and accessories that come with the pressure washer. Different nozzles, brushes, and extension wands allow you to tailor the cleaning process to different surfaces and types of dirt. Some pressure washers also offer additional features such as detergent tanks or adjustable settings, which can be highly beneficial for specific cleaning requirements. Assessing the range of attachments and accessories provided with each option will help you choose the one that best suits your cleaning needs.
By carefully evaluating the pressure output, flow rate, and available attachments, you can select the best small petrol pressure washer that will effectively meet your specific cleaning requirements. By considering these key features, you can ensure that your pressure washer is not only powerful but also versatile enough to handle a variety of cleaning tasks with ease.
Determining Your Budget: Finding the Perfect Balance
When it comes to purchasing a small petrol pressure washer, determining your budget is a crucial step. Finding the perfect balance between cost and quality is essential to ensure that you make a wise investment. By considering your needs and preferences, you can make an informed decision that not only fits your budget but also meets your requirements.
It is important to remember that while a higher price tag often reflects better quality and performance, it may not always be necessary for everyone. Sometimes, a mid-range or even a budget-friendly option can provide satisfactory results.
Considering Your Needs
Start by assessing your needs and the tasks you intend to use the pressure washer for. If you have smaller cleaning projects, such as washing your car or patio, a lower-powered and less expensive model may be sufficient. On the other hand, if you require more power and plan to tackle tougher jobs like cleaning driveways or removing paint, a higher-powered machine might be necessary, even if it comes at a higher cost.
It is also worth considering the frequency of use. If you only plan to use the pressure washer occasionally, it may not be necessary to invest in a top-of-the-line model. However, if you anticipate regular and heavy use, it is wise to choose a more durable and powerful option, even if it means spending more initially.
Exploring the Options
Research various brands and models within your budget range to get an idea of the features they offer. Compare factors like the operating pressure, flow rate, engine power, and additional features such as interchangeable nozzles or adjustable pressure settings. It is also worthwhile to read customer reviews to gauge the reliability and performance of different models.
Remember that while a higher price can indicate better quality, it is not always the case. Look for a pressure washer that offers the best value for your money based on your specific needs. Pay attention to factors such as warranty, customer support, and ease of maintenance.
Conclusion
Determining your budget when searching for the best small petrol pressure washer is a crucial step that requires careful consideration. By assessing your needs and exploring the options within your budget, you can find the perfect balance between cost and quality. Remember to prioritize your specific cleaning requirements and look for a reliable brand that offers the features you need. With the right balance, you can make a well-informed decision and invest in a pressure washer that delivers optimal performance for years to come.
Best Small Petrol Pressure Washer
Features
Color | B |
- 【PORTABLE CORDLESS PRESSURE WASHER】 Portable pressure cleaner is powerful enough with 24V Lithium battery. Cordless, Lightweight and Compact design can travel anywhere. You can use our power washer machine to clean cars, trucks, motorcycles, driveways, fences and bicycles in minutes.
- 【GREAT POWER】MAX 960 PSI for fast cleaning. best for removing dirt from outdoor household surfaces, garden furniture, cars, steps and swimming-pools.
- 【LONGER LIFE OF THE ALL-COPPER MOVEMENT】24000 RPM speed pure copper movement has a longer service life, powerful all-copper motor, sustainable work, long life and no burn-in.
- 【MULTIPLE-FUNCTIONS AND APPLICATION】Our pressure washer gun is effective especially for cleaning the exterior walls of buildings, floors, baths, swimming pools, doors and windows, and corners that are difficult to clean manually. It is the best pressure washer machine for outdoor camping and long trips.
- 【LIGHTWEIGHT AND EASY TO ASSEMBLE】This high pressure cordless washer is about 4.5lb, comes with a 16ft hose that are easy to store. Compared with traditional washing machines, our Pressure Washer are lighter and more portable. Just spent a few minutes to complete the installation and start your work.
Features
Color | H |
- 【PORTABLE CORDLESS PRESSURE WASHER】 Portable pressure cleaner is powerful enough with 21V Lithium battery. Cordless, Lightweight and Compact design can travel anywhere. You can use our power washer machine to clean cars, trucks, motorcycles, driveways, fences and bicycles in minutes.
- 【GREAT POWER】MAX 960 PSI for fast cleaning. best for removing dirt from outdoor household surfaces, garden furniture, cars, steps and swimming-pools.
- 【LONGER LIFE OF THE ALL-COPPER MOVEMENT】24000 RPM speed pure copper movement has a longer service life, powerful all-copper motor, sustainable work, long life and no burn-in.
- 【MULTIPLE-FUNCTIONS AND APPLICATION】Our pressure washer gun is effective especially for cleaning the exterior walls of buildings, floors, baths, swimming pools, doors and windows, and corners that are difficult to clean manually. It is the best pressure washer machine for outdoor camping and long trips.
- 【LIGHTWEIGHT AND EASY TO ASSEMBLE】This high pressure cordless washer is about 4.5lb, comes with a 16ft hose that are easy to store. Compared with traditional washing machines, our Pressure Washer are lighter and more portable. Just spent a few minutes to complete the installation and start your work.
Question-answer:
What is the best small petrol pressure washer?
The best small petrol pressure washer on the market is the Honda GC190.
Why is the Honda GC190 considered the best small petrol pressure washer?
The Honda GC190 is considered the best small petrol pressure washer because it offers a powerful performance with a pressure of up to 3200 PSI and a flow rate of 2.5 GPM. It also has a durable construction, reliable Honda engine, and various features such as adjustable pressure and thermal relief valve.