Hydro Excavation Equipment

Hydrovac work chews through washdown-grade parts. The guns, hose, reels, and nozzles in this collection are the pieces we spec for crews doing potholing, daylighting, and slot trenching around live utilities, where a failed fitting means a stopped truck. Building out a rig or replacing a worn water side? Call 301-519-9274 and tell us your GPM and what you dig in.

What Hydro Excavation Duty Does to Ordinary Gear

A house wash gun gets squeezed a few hundred times a day and sprays soap. A hydro excavation gun runs near max pressure for hours, in mud, often with warm water, while the operator leans on it. That duty cycle is why this category leans stainless. Brass couplers gall and stick after a season of grit. Powder coated steel reels hold up on a box truck, but the stainless frames are what survive the salt and slurry that ends up on everything by the end of a dig day. Buy on duty cycle, not on price, and the math works out. A crew billing by the hour loses more in one down morning than the difference between a standard part and the stainless version.

Pressure and Flow for Digging Around Utilities

Most utility exposure work happens between about 1,500 and 3,000 PSI. That range moves soil fast without shredding tracer wire, conduit, or cable jackets the moment you find them. The nozzle matters more than raw pressure. A zero degree stream drills a narrow hole and wastes water. A rotating turbo style nozzle spins that pencil stream in a cone, so it cuts a wider face and breaks up clay instead of polishing it. Flow is what fills the vac side with slurry it can actually pull, so match your nozzle orifice to the pump. An 8 GPM machine running a nozzle sized for 4 GPM just builds pressure it cannot use. If you work frozen ground, heated water is the difference between digging and chipping, and your hose and gun need to be rated for it.

Building the Water Side of a Hydrovac Rig

Think of it as a chain: pump, plumbing, reel, hose, gun, nozzle. The chain is only as good as its weakest link, and on most rigs that link is an undersized fitting. Run 1/2" plumbing and 1/2" quick connects wherever your flow is above 5 GPM, because 3/8" hardware strangles an 8 GPM pump. Put a ball valve at the reel so you can swap guns without walking back to the truck. Spring rewind reels earn their cost the first week, since hand cranking 100 feet of muddy hose twenty times a day is how hose ends up under the truck tires. And keep a spare gun on the truck. Trigger guns are wear items, not lifetime parts.

Hydro Excavation Gear Lookup

Some items in this line arrive in waves from the factory. Call first and we will give you a straight answer on lead time before you commit.

From the Field

The parts that reorder fastest in this category tell you where hydro excavation gear dies: trigger guns, hose, and couplers. Guns fail from being dropped in the hole and dragged by the hose, which is why the Hi-Viz bodies exist, so you can find the gun in a slurry pit before the vac does. Hose fails at the ends, almost never in the middle, usually from being bent hard at the gun inlet. A swivel on the gun cuts that strain and doubles hose end life, which is exactly why the acid gun with the built-in swivel outsells the plain one with crews who dig daily. And crews that buy bulk hose and end their own lengths save real money, but only if they keep proper crimp ends on the truck. A field-wrapped repair on a digging line at 3,000 PSI is a hospital visit waiting for a place to happen.

Related Collections

• Sewer jetter nozzles
• Sewer jetting hose
• Rotating turbo nozzles
• Hose reels
• Quick connects
• Ball valves
• Pressure washer guns
• Drain and sewer cleaning equipment
• The full Centurion line
• Near DC or Baltimore? Our Gaithersburg counter stocks the wear parts

Frequently Asked Questions

What PSI is used for hydro excavation?

Most potholing and daylighting runs between 1,500 and 3,000 PSI. That is enough to cut soil quickly while staying friendly to cable jackets and conduit when you reach the utility. Rotating nozzles in this class carry ratings well past 5,000 PSI, so the nozzle is rarely the limit.

Can a pressure washer be used for hydro excavation?

For small potholes and utility locates, yes, a 4 to 8 GPM machine with a rotating nozzle digs surprisingly well. You still need somewhere for the slurry to go, which is what the vac truck handles on purpose-built rigs. Many of our hydrovac customers also run a washer setup for spot digs and washdown.

Why use a rotating nozzle instead of a fixed tip for digging?

A fixed zero degree tip drills a narrow, slow hole. A rotating nozzle spins that same stream in a tight cone, so it cuts a wider face, breaks clay into pieces the vacuum can lift, and covers ground several times faster on most soils.

What hose should go on a hydrovac reel?

A pressure-rated washer hose with a wear cover, sized to your flow. For 8 GPM class pumps, do not choke the line with undersized fittings. Buy by the roll if you burn through hose ends, and keep the reel swivel greased so the hose is not twisting itself to death.

Is stainless worth the extra cost on couplers and reels?

If the gear lives on a truck that digs daily, yes. Slurry and road salt eat plated fittings in a season. Stainless couplers keep locking and unlocking smoothly, and a stainless reel frame will outlast two powder coated ones in that environment.

Can you help spec a full water side for a hydrovac truck?

That is a normal Tuesday for us. Call 301-519-9274 with your pump flow, hose length, and how many guns you run, and we will put together the reel, hose, valves, and fittings as one order.