A “1/4 high-pressure spray hose” usually refers to an airless spray hose with a 1/4-inch inner diameter, approximately 6.4mm. This size is one of the most common hose diameters in airless spraying systems and is widely used in architectural painting, automotive coating, furniture finishing, industrial anti-corrosion, and equipment OEM applications.

As an industrial hose factory, we can supply 1/4 high-pressure spray hoses in different pressure ratings, media types, and fitting configurations. For overseas customers, we can also provide short English product descriptions and application copy.

Common Specifications of 1/4 Spray Hoses

A 1/4 spray hose is not a single fixed product. Different pressure ratings, reinforcement structures, and inner materials will affect its final performance. Typical reference ranges are as follows:
Inner diameter: 1/4 inch, approximately 6.4mm;
Outer diameter: approximately 12–14mm, depending on reinforcement and outer cover;
Working pressure: commonly around 228bar, 330bar, 350bar, or 450bar; some high-pressure models can reach 500bar or even 700bar;
Burst pressure: usually three times or more of the working pressure;
Inner tube: nylon, polyurethane, rubber, or PTFE, selected according to paint and solvent compatibility;
Outer cover: polyurethane or synthetic rubber for abrasion, oil, and weather resistance;
Reinforcement: fiber braid, aramid fiber, steel wire, or composite reinforcement;
Fittings: commonly 1/4 NPSM, 1/4 NPT, or custom threads;
Common lengths: 7.5m, 15m, 25m, 50m, or customized lengths for equipment matching.

Note that some 1/4 PVC spray hoses on the market are designed for low-pressure cleaning or general spraying and should not replace high-pressure airless spray hoses. Selection must be based on maximum working pressure and burst pressure.

Suitable Applications for 1/4 Spray Hoses

A 1/4 inner diameter is suitable for most small and medium-sized airless sprayers, especially for:

Architectural wall painting: latex paint, exterior wall coatings, and interior wall coatings;
Furniture and wood coating: varnish, PU paint, and water-based paint;
Automotive refinishing and industrial painting: primer, topcoat, and anti-corrosion coatings;
Equipment integration: portable airless sprayers, electric sprayers, and small plunger pumps;
Short to medium-distance delivery: pressure loss is more controllable under normal working distances.

If the spraying distance is long, the nozzle orifice is large, the coating viscosity is high, or higher flow is required, a 1/4 hose may cause noticeable pressure loss. In such cases, consider upgrading to a 3/8 hose or using a combination of a larger-diameter hose at the pump end and a 1/4 hose at the gun end.

Key Information to Confirm Before Selection

To avoid mismatch, please confirm the following parameters:
Maximum output pressure of the sprayer: the hose working pressure should be higher than the actual operating pressure, with a safety margin;
Coating type: water-based paint, solvent-based paint, epoxy paint, anti-corrosion paint, and adhesives have different requirements for the inner tube;
Hose length: the longer the hose, the greater the pressure loss;
Fitting specification: fittings must match the sprayer, spray gun, and extension wand, with 1/4 NPSM being common;
Anti-static requirement: conductive or anti-static structures are recommended for solvent-based coatings and enclosed environments;
Working environment: check whether abrasion-resistant outer cover, spring guards, low-temperature, or high-temperature versions are needed.

Factory Supply for 1/4 High-Pressure Spray Hoses

We can supply 1/4 high-pressure spray hoses in various pressure ratings, lengths, and fitting types for airless sprayers, coating lines, automotive painting, furniture coating, and industrial anti-corrosion equipment. For overseas promotion, we can also provide concise English product descriptions, application cases, and social media copy without tables.

If you can share the sprayer model, working pressure, coating media, required length, and fitting standard, we can help recommend a suitable 1/4 high-pressure spray hose solution.