Sprayers for Pressure Washing Chemicals

Not every chemical belongs in your pressure washer. Degreaser on an engine, oxalic on a rust stain, stripper on a deck rail, those jobs call for a dedicated sprayer that puts strong mix exactly where you want it. This collection covers pump up sprayers, a 12 volt cart sprayer, and the Solo repair parts that keep them working. Talk it through with a real person at 301-519-9274.

Picking a Chemical Sprayer That Matches the Work

Capacity decides most of it. A 2 gallon pump up sprayer handles spot treatments, gutter cross streaks, rust spots, and small pre-treat areas, and you will pump it back up a dozen times on a bigger job. Once you are treating whole house sides or long fence runs, hand pumping becomes the slowest part of the day. That is the point where a 12 volt tank sprayer earns its cost. The AR 9 gallon cart unit in this collection pushes a steady 1 GPM on battery power, so you squeeze a trigger instead of pumping, and the cart rolls the weight for you.

The Bleach Problem

Sodium hypochlorite is the workhorse of house and roof washing and it is also the number one killer of cheap sprayers. SH oxidizes rubber piston seals, o-rings, and springs, and it turns bargain hoses brittle in a season. If you spray SH, buy a sprayer with poly internals and chemical-rated seals, keep the mix on the weak side, and rinse the tank and wand with clean water after every single use. Better yet, run two sprayers. Mark one for SH only and one for everything else, because SH residue reacts with leftover degreasers and acids in ways you do not want to breathe.

What We Carry

Sprayer or Injector? Use Both

A downstream injector or X-Jet soaps big surfaces fast through your machine, but it dilutes the chemical and coats everything in its path. A sprayer applies full-strength or custom-mixed product only where the problem is. Most crews pre-treat oil spots and rust with a sprayer, wash the whole surface downstream, then come back with the sprayer for anything that survived. The sprayer is the scalpel, the injector is the paint roller.

From the Field

Look at which parts we stock and you can read the failure history of every sprayer that ever crossed this counter. Pump assemblies and shut-off wand assemblies, those are the two things that die, and nearly always because chemical sat in the tank overnight. A Solo that gets rinsed after each use runs for years, which is why we sell the $19 pump assembly and the $28 wand instead of telling you to throw a $52 sprayer away. Before you toss any sprayer that will not hold pressure, check the pump seal first. Ten minutes and a cheap part usually settles it.

Related Collections

• Pump up sprayers
• Soft wash equipment and 12 volt pumps
• Chemical injectors and X-Jets
• Foam cannons and foamers
• House washing chemicals and roof cleaning chemicals
• Degreasers and mineral stain removers
• Chemical handling supplies

We are at 16620 Oakmont Ave in Gaithersburg. Details on the store page if you want to stop in and handle one first.

Frequently Asked Questions

Can I put bleach in a pump up sprayer?

Yes, if the sprayer has poly internals and chemical-rated seals, and you rinse it with clean water after every use. Standard rubber seals oxidize fast in sodium hypochlorite. Keep SH mixes on the weaker side to stretch seal life.

When is it worth moving up to a 12 volt sprayer?

When hand pumping becomes the bottleneck. Treating full house sides, long fences, or several jobs a day justifies the AR 9 gallon cart unit. It delivers a constant 1 GPM on battery power with no pumping and nine times the capacity.

Why will my sprayer not build pressure anymore?

The pump piston seal is usually shot, often from chemical left sitting in the tank. On Solo sprayers the 4400115 replacement pump assembly fixes it for about $19. A leaking trigger points to the shut-off valve and wand assembly instead.

Should I use a sprayer or a downstream injector for house washing?

Use the injector for the broad soap coverage and the sprayer for targeted work, like pre-treating oil, rust, and heavy growth at full strength. The two tools cover different jobs and most rigs carry both.

How do I make a sprayer last with harsh chemicals?

Empty it after each job, rinse the tank, spray clean water through the wand, and store it depressurized. Dedicate one sprayer to SH and a separate one for acids and degreasers so residues never mix.

What size sprayer do most contractors carry?

A 2 gallon pump up rides on nearly every truck because it covers spot work without weighing you down. Full at 2 gallons you are carrying about 17 pounds, which is the practical limit for one-handed work on ladders.