How to Determine if the Brake Check Valve is Damaged?

1 Answers
SanEli
07/30/25 5:38am
If the check valve does not function, it indicates that the brake check valve is damaged. Below is a detailed explanation of the check valve: 1. Definition: A check valve, also known as a non-return valve or one-way valve, allows fluid to flow in only one direction. If reverse flow occurs, the valve automatically closes to prevent high-pressure fluid from entering a low-pressure system. 2. Precautions: When installing a check valve, special attention must be paid to the direction of fluid flow. The normal flow direction should align with the arrow indicated on the valve body; otherwise, it will block the normal flow of the medium. The bottom valve should be installed at the bottom end of the pump suction pipeline. When the check valve closes, it can cause water hammer pressure in the pipeline, which may severely damage the valve, pipeline, or equipment, especially in large-diameter or high-pressure pipelines. Therefore, users should pay close attention to the selection of check valves. Check valves are designed solely to prevent reverse flow of fluid media in various pipelines or equipment and function as one-way shut-off valves.
Was this review help?
1
4
Share
More Forum Discussions

Can You Cover Your Car with a Car Cover When It's Exposed to the Sun in Summer?

You can cover your car with a car cover when it's exposed to the sun in summer, but avoid parking the car in direct sunlight. Here is some relevant information about car covers: 1. Advantages: Covering your car not only protects it from sun exposure but also prevents corrosive substances like dust, tree sap, and bird droppings from damaging the paint, thereby better preserving the car's exterior. Additionally, using a car cover when the car is exposed to the sun helps protect the interior, as temperatures inside the car can reach 70-80 degrees Celsius under direct sunlight. With a car cover, the temperature stays around 30-40 degrees, slowing down the aging process of the interior. 2. Material selection advice: Car covers come in various materials, each with different functions. When purchasing a car cover, buy a high-quality one from reputable sources. A good car cover should be dirt-proof, moisture-proof, flame-retardant, and corrosion-resistant. Nowadays, car covers have become more specialized, so choose one based on your actual needs. Generally, it's recommended to select a car cover with an outer layer made of PVC or PEVA, a middle layer of flame-retardant cotton, and an inner layer of smooth nylon fabric to prevent wind-induced scratches on the paint.
2
3
Share

How to Open the Trunk of the Buick Verano?

Here are the methods to open the trunk of the Buick Verano: 1. The trunk of the Buick Verano can be directly opened using the key. Press and hold the button on the key other than "Lock" or "Unlock" to open the trunk. 2. On the driver's side door, there is a round button at the front lower part of the panel. Pressing this button can also open the trunk. Below are the precautions for using the trunk: 1. Heavier items in the trunk should be placed close to the seat backrest. Ensure the backrest is securely fixed. If items can be stacked, heavier items should be placed at the bottom. Use the hooks on the sidewalls of the trunk to hang handbags. Secure any loose items in the trunk to prevent them from sliding. When transporting items in the trunk, the backrest of the rear seat should not be tilted forward. Do not let the loaded items exceed the upper edge of the seat backrest. 2. Do not place any items on the trunk cover or the instrument panel, and do not block the sensors at the top of the instrument panel. Loaded items should not obstruct the operation of the pedals, parking brake, or gear shift lever, nor should they interfere with the driver's freedom of movement. Do not place any unsecured items in the car. Do not drive with the trunk open.
4
2
Share

What is the Accelerator Pedal?

The accelerator pedal, also known as the throttle pedal, is used to control the engine's power output. Main Function: The primary role of the accelerator pedal is to regulate the throttle valve's opening, thereby controlling the engine's power output. In some vehicles, the accelerator pedal is connected to the engine's throttle valve via a throttle cable or linkage, allowing the driver to directly control the throttle when pressing the pedal. However, many modern vehicles use electronic throttle systems, where the accelerator pedal and throttle valve are no longer connected by a cable. Electronic throttle pedals are equipped with displacement sensors. When the driver presses the pedal, the ECU collects data on the pedal's displacement and acceleration changes, interprets the driver's intent using built-in algorithms, and then sends corresponding control signals to the throttle valve's motor to adjust the engine's power output. Design Variations: Modern vehicles typically feature two types of accelerator pedals: 'floor-mounted' and 'suspended.' Floor-mounted pedals have their pivot point at the base, allowing the entire foot to rest on the pedal, which also serves as a fulcrum. This design enables easier control with the lower leg and ankle, improving precision and reducing fatigue. Suspended pedals, on the other hand, have their pivot point at the top of the bracket, resulting in a simpler (and often lighter) lower structure. This makes the pedal feel more responsive, and the bracket can be designed as a metal rod, significantly reducing manufacturing costs.
18
3
Share

Can I switch from C1 to C2 after failing the second subject test 4 times?

If you have failed the C1 driver's license subject 2 test four times, you cannot switch to C2. During the process of obtaining a driver's license, you cannot change the license level midway. Since changing from C1 to C2 is considered a downgrade, you can only re-enroll in a driving school, pay the price difference for switching from C1 to C2, and then start over from subject 1. C1 driver's license test: The test subjects include four items: traffic regulations and related knowledge, field driving, road driving, and safe and civilized driving knowledge. Passing standards: Traffic regulations and related knowledge (subject 1) - written test, full score is 100, 90 or above is passing. Field driving (subject 2) - on-site, actual vehicle. The minimum requirement is 80 points, below 80 is failing. Road driving (subject 3) - highway or simulated field, actual vehicle. Full score is 100, must achieve 90 or above to pass. Safe and civilized driving knowledge - written test, questions mainly in the form of cases, pictures, animations, etc., question types include true/false, single-choice, and multiple-choice, a total of 50 questions, full score is 100, 90 is passing.
8
3
Share

Does the 2021 Corolla support CarPlay?

The 2021 Corolla supports CarPlay. Introduction to CarPlay: CarPlay is an in-car system developed by Apple Inc. that seamlessly integrates users' iOS devices and iOS experience with the dashboard system. Connection method: CarPlay only supports iPhones with Lightning ports. Although iPads also support this interface, Apple has not included iPads as hardware devices compatible with CarPlay. On June 13, 2016, Apple announced at the WWDC developer conference that its smart car system CarPlay would be updated alongside iOS 10, becoming the perfect companion for the new Apple Maps and Siri.
8
5
Share

What is the original tire brand for the Volvo S60?

The Volvo S60 comes standard with Michelin PRIMACY HP tires, which offer excellent comfort, low noise levels, and outstanding performance. The PRIMACY series is Michelin's flagship product line for quietness and comfort, consisting of three models: LC Primacy, 3ST Primacy, and HP. The LC Primacy is positioned as a quiet, comfortable, fuel-efficient, and long-lasting tire, primarily targeting mid-to-high-end vehicles. The 3ST Primacy is Michelin's newly introduced tire, focusing on quietness, comfort, and safety, and is set to replace the LC Primacy. The HP, on the other hand, is positioned higher than both the LC Primacy and 3ST Primacy, offering not only comfort and quietness but also strong handling performance. Although the PRIMACY HP belongs to the same series as the LC Primacy and 3ST Primacy, it is positioned higher. The HP is imported and sold in the domestic market, excelling not only in quietness and comfort but also in superior dry and wet road grip compared to the LC Primacy. It is a high-performance tire highly regarded by numerous renowned European car manufacturers for its long mileage and wet-road safety. The HP offers a wider range of wheel and tire width options than the LC Primacy, catering more to mid-to-high-end vehicles, with wheel sizes available in 16, 17, and 18 inches. Due to its imported status and superior performance, the HP is more expensive than the LC Primacy for the same specifications.
12
2
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.