Pressure Washer Guns
SGS28 Spray Gun
Mezzo SuperShot with AJH and Shooter Nozzle
Black SGS35 Spray Gun
Blue SGS35 Spray Gun
ST1500 Pressure Washer Gun
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How to Choose the Right Pressure Washer Gun
A pressure washer gun is the component your hand stays on all day, so the wrong pick costs you in fatigue, downtime, and replacement guns. The pressure and flow rating come first. Then trigger and swivel design. Hot water or chemical compatibility comes into play if you're running a specialty rig.
PSI and GPM rating
Your gun has to be rated for at least as much PSI and GPM as your machine puts out, ideally with some headroom. A gun rated below your pump's output will blow seals, leak at the trigger, or fail outright under pressure. Every gun on this page is rated for at least 4,000 PSI and most handle 5,000 PSI at up to 12 GPM, which covers everything from small homeowner units to truck-mounted commercial rigs.
Trigger comfort and live swivel
If you're running a gun for six or eight hours a day, the trigger pull and the swivel matter more than the spec sheet. A low-friction trigger reduces hand fatigue on long jobs, and a live swivel at the inlet keeps the hose from twisting under your wrist as you work. The SGS28 uses an easy-pull trigger and a live swivel inlet. The SGS35 adds Easy Hold Technology and a low-profile stainless live swivel. The ST1500 takes a different approach with a rear-entry hose design that keeps the line behind you instead of pulling sideways.
Hot water and chemical compatibility
If you're running a hot water rig (common for fleet washing, grease removal, and commercial kitchens), you need a gun rated for high-temperature use. The SGS28 is the only gun on this page with a published hot-water rating: up to 320°F. The ST1500 and SGS35 don't publish a hot-water spec, so if you run hot water daily, default to the SGS28. If you're cleaning in a food-service or FDA-regulated facility, the Blue SGS35 uses a food-grade housing that meets OSHA and FDA facility requirements. For general cold-water pressure washing, the ST1500's forged brass body and fully-rebuildable design are why it's been the shop workhorse for decades.
Pressure Washer Gun Comparison
| If your job is... | Pick this gun |
|---|---|
| General residential or commercial work up to 5,000 PSI / 10.4 GPM | ST1500 Pressure Washer Gun |
| Same as above, but you want a wand and quick-connects included | ST1500 Gun and Wand Assembly |
| Hot water cleaning up to 320°F | SGS28 Spray Gun |
| Long shifts where fatigue and live-swivel performance matter | Black SGS35 Spray Gun |
| Food service, FDA, or OSHA-regulated facility work | Blue SGS35 Spray Gun |
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Frequently Asked Questions
What PSI and GPM should my pressure washer gun be rated for?
Your gun's max PSI and GPM rating should meet or exceed your pressure washer's output. Never go under. A 4,000 PSI machine paired with a 3,000 PSI gun will leak, blow seals, or fail under load. When in doubt, size up. A 5,000 PSI gun on a 3,000 PSI rig is fine, but the reverse is not.
What's the difference between the ST1500 and the SGS series?
The ST1500 is the industry-standard gun. Forged brass body, stainless steel internals (spring, needle, ball, seat), rear-entry hose design, fully rebuildable via seven-screw valve access. It's the gun most pros have used at some point in their career. The SGS series (SGS28 and SGS35) is built around ergonomics: live-swivel inlets, easy-pull or low-friction triggers, plated brass valves, ceramic balls, and reinforced housings that reduce fatigue on long jobs. Both are professional-grade. Go with the ST1500 if you care about rebuildability and a long track record. Go with the SGS series if you're spending all day on the trigger and want a live swivel out of the box.
Do I need a live swivel on my pressure washer gun?
If you're running the gun more than an hour or two at a stretch, yes. A live swivel at the inlet lets the hose rotate under pressure without twisting your wrist or kinking the line. Without one, the hose torque builds up in your forearm and you'll feel it by the end of the day. The SGS28 and SGS35 both include a live swivel. The ST1500 doesn't. It uses a rear-entry design instead, which works well but is a different solution to the same problem.
Can I use my pressure washer gun with hot water?
Only if it's rated for it. The SGS28 is the only gun in this collection with a published hot-water rating, up to 320°F, which covers any standard hot water pressure washer. The ST1500 and SGS35 don't publish a hot-water spec. If you run hot water daily, the SGS28 is the safe pick. Running hot water through a gun that isn't rated for it will degrade the seals quickly and shorten the life of the gun.
Will these guns fit my pressure washer?
Yes. All five guns use standard pressure-washing connection sizes (3/8" inlet, 1/4" outlet) that work with any common pressure washer hose and standard 1/4" QC spray tips. The difference is whether quick-connect fittings are included. The ST1500 standalone gun ships with 3/8" FPT inlet and 1/4" FPT outlet threads, so you'll need to add quick-connects if your hose uses them. The ST1500 Gun and Wand Assembly and the Black SGS35 come with stainless quick-connects pre-installed. The SGS28 ships with stainless QCs on the inlet and outlet. The Blue SGS35 is sold in two variations: with QCs pre-installed (Loctite-secured) or without.
How long does a pressure washer gun last, and can I rebuild it?
A professional-grade gun used daily typically lasts 2-4 years before the seals or valve seat wear out. The ST1500 is fully rebuildable. Seven-screw valve access makes it easy to replace internals and keep the gun in service for years longer than a sealed unit. The SGS28 has a matching repair kit available so you can rebuild it instead of replacing it. Rebuilding costs a fraction of a new gun and is the reason these models stay in fleets so long.
