How to choose the outlet pipe for your car washer?

Choosing the outlet pipe of a high-pressure cleaning machine is very important, it is directly related to the performance of the machine, the safety of use and the life of the pipe. Choosing the wrong one can result in loss of outlet pressure, rupture of the pipe or even dangerous.

Here's a detailed overview of the main points and steps of the selection:

I. Core Selection Based

Mainly look at the following four key parameters, which are clearly listed in your HVAC specifications or on your machine:

1. Working Pressure:

· The unit is usually Bar (bar) or MPa (mpa), 1 MPa ≈ 10 Bar.

· The rated working pressure of the selected outlet pipe must be higher than the maximum working pressure of your cleaning machine.It is generally recommended to choose outlet pipes 25 to 50 percent higher than the machine pressure for pressure spikes and durability. For example, if the machine pressure is 150 Bar, it is best to choose  outlet pipes of 200 Bar or above.

2. Flow Rate (Flow Rate):

· The unit is usually L / min (liter / minute) or L / h (liter / hour).

· The internal diameter of the  outlet pipe must be large enough to ensure that the water flows smoothly.The larger the flow, the larger the internal diameter of the required  outlet pipe. If the  outlet pipe is too thin, it will cause a lot of pressure loss and the machine will be powerless.

3. Connector Type and Size:

· Determine what type of joints are at both ends of the  outlet pipe (e.g. M22-14mm is the common European standard, 3/8 "Quick Connect is 3/8 inch faster, 1/4" Quick Connect is 1/4 inch faster).

· Be sure that the joint of the  outlet pipe fully matches the type of bolt / fastener to your machine outlet and spray gun entrance, otherwise it cannot be installed or easily leaks.If you're unsure, take a picture of the machine's interface and consult the seller.

4. Length (Length):

· Common lengths are 5 meters, 8 meters, 10 meters, 15 meters, 20 meters, etc.

· Principle: To the extent that the operating distance is met, choose a shorter water pipe as much as possible.

· Why?The longer the  outlet pipe, the greater the water flow resistance, the greatest the pressure and flow loss. Usually, for every 5 meters of length, the pressure drops by several bars.

· Recommendation: Domestic cleaning machines generally 5-10 meters are perfectly adequate;For commercial use or those requiring large-scale movement, consider 15 meters, but try not to exceed 20 meters. If a long tube is indeed required, a larger internal diameter tube should be chosen accordingly to reduce pressure loss.

II. Selection of water pipe materials

This is the key to determining the tube's durability, flexibility and price.

· PVC / rubber mixing pipe (most common):

· Pros: Good value for money, lighter weight, better flexibility.

· Disadvantages: The wear and extreme temperature resistance is general, and long-term sun exposure is easy to age and harden.

· Suitable: The preferred choice for the vast majority of household cleaning machines and perfectly meets demand.

· Pure rubber tubing (more durable):

· Advantages: Excellent abrasion resistance, oil resistance, better resistance to natural weathering (high and low temperatures), longer life.

· Cons: heavier, more expensive, slightly less flexible.

· Applicable: Commercial cleaning machines or situations where the use environment is harsh (e.g., construction sites, farms).

· ** Thermoplastic rubber (TPR) / other composite materials (high-end): * *

· Pros: It has both flexibility and durability, is relatively light weight and is not easy to tie.

· Cons: The most expensive.

· Applicable: Professional users with a high demanding usage experience.

III. Number of structural layers

High-pressure  outlet pipes are usually not single layers, and the more layers the more durable they are.

· 2 Layers: The most basic structure for low- and medium-voltage home machines.

· 3 layers: The most common structure with a high-strength synthetic fiber woven mesh in the middle that enhances stress resistance.For home computers, it is recommended to choose at least 3 layers.

· 4 layers and above: Mostly commercial grade, with more woven layers and wear-resistant outer layers, which are very strong.

Select summary and steps

1. View machine parameters: Find the maximum working pressure and flow rate on your cleaning machine's emblem or instruction manual.

2. Determine the interface: Check the interface model of the machine outlet and the spray gun (M22-14mm is the most common, but not absolute).

3. Choose length: Determine the length you need based on your use scenario (yard, garage, workshop). Choose shorter than longer.

4. Select Products: Choose water pipes based on the above information:

· Rated pressure > machine pressure (e.g., machine 150 Bar, select 200 Bar)

· Interface model matches perfectly

· Suitable length (5-10 meters for home use)

· The material can be mixed with PVC / rubber, and the budget is sufficient to select pure rubber.

· Number of layers Choose 3 or more layers.

5. Buying channel: It is recommended to buy from the brand's official store, hardware and tool store or a reputable e-commerce platform, which has more guaranteed quality. Miscellaneous water pipes are at risk of exploding.

Warm prompt

· Safety first: Never replace high pressure  outlet pipes with regular garden pipes. The latter cannot withstand high pressure and will explode instantly, which is very dangerous!

· Use and maintenance: When using, try to avoid the tube being overly bent, crushed or exposed to sharp objects and high temperature surfaces.After using the empty water in the back row, the diameter of the dish should not be too small, and store it in the shade.

· Stress loss: If a longer  outlet pipe is chosen as a last resort (e.g. 15 meters or more), it is normal to feel the machine weak. This is not a problem of the quality of the machine or the pipe, but a physical law.

Following this process, you will certainly be able to choose a safe, suitable and durable outlet pipe for your high pressure cleaning machine.