Continental Neptune 4000 Hose 3/8" x 4' MPT 4000PSI - 1924

What the Continental Neptune 4000 Hose Does

The Continental Neptune 4000 is a pressure washer hose built for high-pressure washing equipment, rated to handle working pressures up to 4000 PSI across a temperature range of -20°F to 250 F. It is designed for commercial vehicle fleet washing, industrial cleaning, equipment washing, and facility maintenance.

Why You'll Love the Continental Neptune 4000 Hose

Consistent 4000 PSI performance. Neptune 4000 hose supports working pressures up to 4000 psi, delivering stable spray force at the nozzle for stripping grease, paint, and ground-in grime from concrete, fleet vehicles, and heavy equipment.

Built-in safety margin. The burst threshold for the Continental Neptune 4000 is up to 12,000 psi, giving operators a measurable buffer against pressure spikes from unloader valves or cold-start surges.

Oil-resistant construction for tough environments. The nitrile tube and oil-resistant cover resist degradation from chemical exposure, detergents, and lubricants found in wash bays and service shops. The cover carries an RMA Class B rating for medium oil resistance.

Flexible handling on the job. The hose features a single braided steel wire construction, keeping weight manageable and bend radius practical for frequent roll-out, drag across concrete, and rewind onto a reel.

Non-marking cover colors. Available in various colors including black, blue, and gray, the Neptune hose lets crews color-code rigs or select a gray cover to avoid scuffing decorative concrete and warehouse floors.

What Makes the Neptune 4000 Different

Generic PVC pressure washer hose lines rated at 2,000 or 3,000 PSI stiffen in cold weather, lack oil resistance, and fail under sustained hot-water use. The Continental ContiTech Neptune 4000 solves each of these with different materials and reinforcement.

Neptune 4000 hose is made of oil-resistant synthetic rubber for both the tube and cover. This construction handles temperatures from -20°F to 250°F without cracking or softening. It integrates with hot-water pressure washers for effective cleaning while remaining flexible enough for daily mobile work.

Single braided steel wire reinforcement provides a strength-to-weight ratio that dual-braid hoses cannot match for portability. The hose is commonly available in a 3/8 inch inner diameter (0.69" OD), weighing roughly 0.25 lb/ft.

Continental manufactures this product in the USA, maintaining consistent quality control across production runs.

How the Continental Neptune 4000 Works in Your System

1. Select the right ID and length. The 3 8 inch ID is the standard item for most pressure washer machines rated at 4000 PSI. Choose a length (50', 75', or 100') that matches your job layout; longer runs add weight and minor pressure drop.

2. Install compatible fittings. Use Continental/ContiTech fittings rated for 4000 PSI. Assemblies typically ship with one male solid and one male swivel end, plus bend restrictors to prevent kinking at connections. Proper crimping per the manufacturer's assembly manual is required.

3. Connect pump, reel, and gun. Route the system as: pump outlet → short jumper hose → reel → Neptune 4000 work hose → spray gun/wand. A hose reel reduces drag and protects the cover from abrasion.

4. Operate within rated limits. The hose operates within a temperature range of -20°F to 250°F and up to 4000 PSI. The hose should not be used for steam service; steam degrades the nitrile rubber and shortens service life.

5. Depressurize and store. Shut off the pump, trigger the gun until pressure drops to zero, drain water to prevent freeze damage, and coil loosely. Store out of direct sunlight.

Continental Neptune 4000 Hose Details

• Construction: Oil-resistant nitrile synthetic rubber tube and smooth cover, RMA Class B medium oil resistance, single steel wire braid reinforcement

• Working Pressure: 4000 PSI 

• Temperature: -20°F to 250 F; not recommended for steam

• Sizes: 3/8" MPT

• Cover Color: Gray

• Compatibility: Gas and electric pressure washer machines up to 4000 PSI; works with manual and electric reels, standard guns, and nozzles when proper fittings are used

• Typical Assembly: 3/8" x 4' with male solid/male swivel ends

Who the Neptune 4000 Hose Is For

The Continental Neptune 4000 is suitable for commercial vehicle fleet washing and industrial cleaning. It is not a cost-effective solution for residential washers running up to 4,000 PSI.

Mobile pressure-washing contractors who wash parking structures, building exteriors, and heavy equipment daily need a hose that holds 4000 PSI without ballooning or failing mid-job.

Industrial maintenance teams in manufacturing plants and food processing facilities use hot-water washers to remove oil and residues; the nitrile tube handles both heat and cleaning chemicals.

Commercial property managers at shopping centers, schools, and stadiums benefit from a hose that survives repeated deployment without surface marking.

Professional detailers and fleet wash operators can pair non-marking gray covers with high pressure for careful surface work on painted trucks and trailers.

Frequently Asked Questions

Is the Neptune 4000 hose easy to handle? The single steel wire braid and smooth rubber cover produce less friction against concrete than stiff PVC lines. At roughly 0.25 lb/ft in the 3/8" size, it rolls onto a reel or cart without excessive effort.

Can I use it with hot water? Yes. The hose integrates with hot-water pressure washers at water temperatures up to 250°F (121°C). It should not be used for steam service.

What pressure washer can I pair it with? Any cold- or hot-water unit with working pressures at or below 4000 PSI. Using it on a machine that exceeds 4000 PSI risks hose failure.

How long will it last in daily commercial use? Service life depends on abrasion exposure, temperature cycling, proper storage, and use of bend restrictors at fittings. Operators who drain, coil loosely, and avoid dragging over sharp edges get the longest life from this product.

Is it compatible with pressure-washer detergents? The nitrile tube handles common cleaning detergents and degreasers. For aggressive acids or oxidizers, check Continental's chemical resistance guidelines before use.

Ready to Upgrade Your Pressure-Washer Hose?

The Continental Neptune 4000 replaces hoses that kink, stiffen, and fail under sustained high-pressure work. It delivers rated 4000 PSI performance with oil-resistant construction and a temperature range that covers both cold and hot water applications.

Contact the Barens team to specify the correct Neptune 4000 configuration for your application.