Interchangeable Steel Nozzle Length 235MM High-pressure Cleaning Gun

Product Description

DG-10-A

Core functions and components

1.Control water flow: The trigger is used to control the on/off of high-pressure water flow.

2.Connecting pipeline: One end is connected to the high-pressure hose of the high-pressure cleaning machine through a quick-connect connector.

3.Installing nozzle: The gun head usually has standard threads (such as M22 or quick-connect interface) for installing nozzles of different angles and functions.

4.Safety lock: Many spray guns are designed with a safety lock to prevent accidental triggering of the trigger. 

Main types:

1.Standard spray gun:

The most common basic type.

It has only one function, mainly controlling the water flow switch and installing the nozzle.

The price is relatively low.

2.Multi-functional spray gun / Adjustable spray gun:

Core feature: The gun body comes with a rotatable adjustment ring or lever.

Function: Without replacing the nozzle, by rotating the adjustment ring, the spray angle and impact force of the water flow can be changed (for example, from a high-pressure fine jet at 0° to a wide-angle fan-shaped spray at 40°).

Advantages: Easy to operate and quick, eliminating the hassle of frequently replacing the nozzle, and improving work efficiency. It is very suitable for scenarios that require frequent switching of cleaning modes (such as car washing: fine stream for stubborn stains, fan-shaped for large-area foam).

Disadvantages: The price is higher than that of the standard spray gun; the internal structure is relatively complex, and it may be more prone to damage or clogging; the maximum pressure is usually slightly lower than that of the standard spray gun with a fixed 0° nozzle.

3.Spray pole / integrated spray gun:

The spray gun is integrated with a longer metal or plastic pole.

Advantages: It extends the operating distance, eliminating the need to bend over or stretch excessively when cleaning high places (such as rooftops, second-floor exterior walls) or low places (such as the inner side of wheels), making it more labor-saving and comfortable.

Disadvantages: The overall length is longer, and it takes up more space when stored; flexibility may be slightly lower than short spray guns. 

Considerations for purchasing a cleaning gun

1.Compatibility:

Interface: The interface must match the outlet of the high-pressure hose of your high-pressure cleaning machine (common ones include M22-14mm male/female connectors, quick-connect interfaces, etc.). Make sure to confirm the interface specifications when purchasing.

Nozzle interface: Confirm the thread specification of the nozzle that the gun head installs (the most common one is M22 internal thread) to see if it is compatible with your existing or planned-to-purchase nozzles.

2.Working pressure:

The cleaning gun must be able to withstand the maximum working pressure of your high-pressure cleaning machine. Check the maximum pressure-bearing value marked on the cleaning gun (such as 250 Bar, 3500 PSI), and it must be greater than or equal to the maximum pressure of your machine.

3.Type requirements:

Choose a standard gun, multi-functional gun, or gun with integrated hose based on your usage habits and cleaning needs. Multi-functional guns are very practical for most home and general commercial cleaning.

4.Ergonomics and comfort:

Is the grip comfortable and non-slip? Is the trigger operation easy? Long-term use without fatigue is important. Weight is also a consideration.

5.Material and durability:

High-quality plastic (such as reinforced nylon, glass fiber reinforced plastic) or metal (such as aluminum, brass) gun bodies are more durable. The quality of the internal seals (O-rings) also affects lifespan and leak prevention.

6.Safety lock:

It is strongly recommended to choose a gun with a safety lock, especially when there are children at home or when using it in public areas, to increase safety. 

Safety and Maintenance Tips

1.Safety First!

Always wear goggles.

Never direct high-pressure water towards humans, animals, electrical appliances or vulnerable surfaces. The 0° nozzle jet has extremely strong cutting power and is extremely dangerous.

Before use, check that the spray gun, hose and all connections are firmly and leak-free.

Release pressure: After turning off the machine, pull the trigger of the spray gun to release the residual pressure in the hose before disconnecting the connection.

2.Correct Installation of Nozzle: Ensure the nozzle is fully tightened to prevent it from falling off or leaking.

3.Avoid Dips and Collisions: The spray gun is of precise internal design. Dips or heavy impacts may cause damage or leakage.

4.Winter Freeze Prevention: If the machine is used or stored in an environment below the freezing point, the water in the spray gun and hose must be completely drained to prevent freezing and cracking.

5.Regular Inspection: Check if the trigger is flexible, if the safety lock is effective, and if there are any cracks or damages at the interface and the gun body.

6.Cleaning: After use, if the water quality is hard, it is best to rinse the exterior of the spray gun with clean water to prevent scale deposition. Drain the internal water when not in use for a long time. 

Summary

The "cleaning gun" is a key component that interacts directly with people in high-pressure cleaning operations. Choosing a cleaning gun that is compatible, has sufficient pressure resistance, is comfortable to operate, meets your functional requirements (especially considering the convenience of multi-functional sprayers), and comes with a safety lock can significantly enhance cleaning efficiency and the operational experience. When purchasing, be sure to confirm the interface compatibility with your high-pressure cleaning machine model.

The packaging contents include:

1 X Air Spray Gun

1 X 600ml Spray Bottle

1 X Tower Screw

1 X Hexagonal Nut

FAQS:

Question A:  What causes a cleaning gun to not spray water or spray very little water and how to solve it?

Answer A: Cause: The water inlet is blocked (such as by impurities or scale), the water pipe is bent and leaking air, the sealing ring of the water pump is worn out, and the nozzle of the gun head is clogged.

Solution: Disassemble the water inlet to clean the impurities, straighten the water pipe, replace the sealing ring, and use a fine needle to unclog the nozzle.

Question B:  What should I do if the washing gun's water drain is leaking?

Answer B: Reason: Loose connection, aging sealing ring, water pipe rupture, wear of gun body interface.

Solution: Tighten the connection, replace the sealing ring, repair or replace the water pipe, check if the gun body interface needs maintenance or replacement.