MTM Hydro SGS28 Pressure Washer Spray Gun

The SGS28 spray gun from MTM Hydro is a powerful, reliable choice in the pressure washing segment. They're engineered with an integrated stainless steel live swivel to enhance maneuverability, and the stainless QC fittings give this spray gun a noticeable leg up in general effectiveness. The live swivel allows you to spin the hose while under pressure, resulting in better movement and all but eliminating snagged and tangled hoses while you work. Plus, the easy pull trigger offers a soothing grip to avoid hand fatigue. The maximum pressure measures 4000 PSI. The maximum temperature is an impressive 320 degrees Fahrenheit. 

High-pressure spray guns are designed for strong, focused streams. The MTM Hydro 10.5007 SGS28 is designed for various cleaning jobs, including car detailing, washing driveways, and general pressure washing. It is particularly useful for pairing with a foam cannon, thanks to its integrated live swivel and stainless steel quick connect fittings, which allow for easier hose management. The "Easy Hold" trigger design and ergonomic grip also help to reduce hand fatigue during extended use. When comparing it to other MTM models, the primary differences are in the specific features including this model's ergonomic design, i.e. the trigger, the swivel mechanism, and the inclusion of quick-connect fittings.

When choosing a spray gun, there are several compatibility aspects to consider. Not ever spray gun is compatible with every pressure washer.

First, pressure washer guns use specific connectors, like M22 or quick connect, to attach to the hose. You need a gun that matches your pressure washer's connection or use an adapter.The gun's pressure rating should match or exceed your pressure washer's output. A gun rated too low can be compromised or damage your equipment. Next, consider the gun's flow rating. This specification needs to be compatible with the pressure washer. A gun with a lower GPM rating can reduce your system's performance. For hot water pressure cleaning equipment and applications, the gun must have seals and construction materials designed to handle high temperatures to prevent them from melting or causing burns. 

Installation Instructions for Spray Gun SGS28:

1. Connect your pressure washer hose to the gun's 3/8" stainless steel quick connect (QC) plug on the inlet
2. Attach your lance, foam cannon, or nozzle to the 1/4" stainless steel QC outlet on the gun.

Specifications:

• Max PSI: 4000
• Max Temp: 320 F
• 4 GPM max
• 3/8" stainless plug inlet x 1/4" stainless coupler outlet
• integrated stainless steel live swivel
• Stainless QC fittings
• Easy Pull trigger 

Using a High Pressure Spray Gun

• First set up the machine by connecting the water and high-pressure hoses
• Select the appropriate nozzle for the surface.
• Turn on the water supply before turning on the machine.
• Aim the gun at the surface and squeeze the trigger to release a stream of high-pressure water.
• Use slow, overlapping strokes, maintaining a safe distance to avoid damage, and work your way across the surface you're cleaning.

Spray Gun Cleaning and Maintenance:

• After each use, rinse the entire spray gun, including the nozzle and lance, with clean water to remove dirt, debris, and chemical buildup.
• Carefully examine the gun for any cracks, bends, leaks, or wear on quick disconnects or other components.
• Ensure all O-rings and seals are in place and in good condition. Replace them if they are damaged or worn to prevent leaks.
• If you notice low pressure or an inconsistent spray, clear the nozzle using a small pin or specialized tool.
• For persistent blockages, soak the nozzle in white vinegar or a descaling solution to dissolve mineral deposits.
• Apply silicone grease to the O-rings to keep them lubricated and maintain seals. 

Safety Tips and Considerations

When handling the MTM Hydro 10.5007 spray gun, focus on safety, proper nozzle selection, and correct technique by using low-pressure starts, maintaining distance, and employing angled, overlapping passes to prevent damage and ensure effective cleaning.

• Always wear safety gear, including eye protection, gloves, and closed-toe boots when cleaning. 
• Check for electrical hazards, power lines, and fragile surfaces before you begin. 
• Ensure the pressure washer sits on a flat, stable surface.
• Before starting the engine or turning on the power, hold the trigger on the gun for a few seconds to release any trapped air from the hoses. 
• Hold the nozzle tip at a safe distance, usually about 4 inches to 1 or 2 feet away, depending on the surface and nozzle
• Move the nozzle closer for tougher stains and further away for more delicate surfaces to avoid damage.
• Never point the spray at people or animals.
• Using an incompatible gun can damage the gun or the pressure washer itself, leading to a shortened lifespan or ineffective cleaning.

Troubleshooting Tips:

• Nozzle is clogged: Clean the nozzle with a tip cleaner and rinse thoroughly with water. 
• Gun is leaking: Inspect and replace internal seals and O-rings.
• Improper spray: Ensure the air supply is adequate and check that air and fluid settings are correct.
• Gun is stuck open or shut: Disassemble the gun using a T15 Torx bit, carefully remove the pin and trigger assembly, and reassemble, ensuring the pin, ball bearing, and spring are correctly seated.
• Common installation errors for MTM Hydro 10.5007 gun include improper connections leading to leaks, such as a severely bent whip line, failing to secure the hose reel locking mechanism, or not using the provided fasteners for slack at swivel joints. You may also see issues if the water supply is not properly connected or if there are fuel/oil leaks on the equipment.