Coxreels P-MP-320 Medium Pressure Spring Rewind Hose Reel | P Series | 3/8″ Hose Diameter | 20′ Hose Length | 3000 Max PSI

Compact service bays, mobile lube rigs, and workbench pressure-wash setups don’t need 35 feetof hose — they need a reel sized to the work, rated for real fluid pressure, and built to last. The Coxreels P-MP-320 Medium Pressure Spring Rewind Hose Reeldelivers exactly that with 20 feetof 3/8-inch IDone-wire braid hose meeting SAE 100R1 specifications (a steel-reinforced hydraulic hose construction built for fluid pressure, not just air). Rated to 3,000 max PSIfor air, water, and oil service up to 212°F — or 135°Fwith water and synthetic fluids — the reel handles pressure washing, oil dispensing, and light hydraulic applications that would burst a standard low-pressure air reel. The spring rewind motor pulls the braided hose home automatically when the job is done, and the all-steel frame with powder-coat finish stands up to daily shop use. The P-MP-320is sized for tight installations: under-bench mounting, mobile service rigs, compact wash setups, and single-bay shops where a longer reel would be overkill but the medium-pressure rating is non-negotiable.

Type:Spring Rewind Hose Reel | Series:P Series (Medium Pressure) | Hose ID (in.):3/8 | Hose OD (in.):11/16 | Hose Length (ft):20 | Hose Construction:One-Wire Braid, SAE 100R1 | Max Pressure (PSI):3,000 | Max Temperature (°F):212 (135 with water or synthetic fluids) | Service:Air, Water, Oil | Retraction:Spring Rewind | Approx. Weight (lbs):46

Features

• All-steel frame and base with durable powder-coat finish for long service in industrial, fleet, and equipment-service environments
• Pre-mounted 20-foot, 3/8-inch ID hose with one-wire steel braid construction meeting SAE 100R1 — the hydraulic-rated specification that supports 3,000 PSI working pressure
• 3,000 max PSI rating with service compatibility for air, water, and oil up to 212°F (135°F with water or synthetic fluids)
• Compact 20-foot hose length suits tight installations, mobile rigs, and under-bench mounting where longer reels won’t fit
• Multi-position adjustable guide arm directs hose payout at floor, bench, or overhead angles to match installation
• Spring motor delivers consistent rewind tension and is rebuildable in the field for extended service life
• CNC-machined brass swivel inlet provides a leak-resistant connection rated for the full pressure of the reel
• 41 lb body mounts to wall, ceiling, bench, floor, or vehicle with standard hardware

Made in USA: 

2 Year Warranty 

Applications

• Compact pressure-wash setups— short-reach wash bays, single-bay detailing operations, and mobile rigs where 20 feet covers the working area
• Mobile lube & service rigs— truck-mounted setups for oil dispensing and fluid delivery where space is at a premium
• Workbench & under-bench installations— point-of-use fluid drops in shops where a wall or ceiling reel would be impractical
• Light hydraulic & equipment service— bench hydraulic test feeds, jack and ram service, and shop pressure work within the 3,000 PSI rating
• Single-bay automotive & fleet service— oil dispensing and light hydraulic work in independent shops, small fleet operations, and dealer prep bays

FAQs:

• Q: Why does the 20-foot reel have a higher PSI rating (3,000) than the longer 25- and 30-foot MP reels (2,500)?
  A: Shorter hose, less fluid friction, slightly different hose construction in the smaller reels. The shorter 20-foot MP-320 (and other small-frame MP reels) carry a 3,000 PSI rating, while the longer 25-foot and 30-foot MP reels in the same series are rated to 2,500 PSI. If your application sits between 2,500 and 3,000 PSI and a shorter hose works, the P-MP-320 fits where the longer reels won’t.
• Q: Why no EZ-Coil version of the P-MP-320?
  A: Coxreels offers EZ-Coil controlled retraction on selected models, primarily where hose length and weight create meaningful rebound energy. The 20-foot MP-320 has less stored energy in the spring at full extension than longer MP reels, so the controlled retraction option isn’t offered on this SKU. If you need EZ-Coil specifically, step up to the EZ-P-MP-425 (25 ft, 1/2″ ID) or EZ-P-MP-430 (30 ft, 1/2″ ID).
• Q: What does “SAE 100R1” mean, and why does it matter?
  A: SAE 100R1 is the Society of Automotive Engineers specification for hydraulic hose with a single layer of steel wire braid reinforcement. It defines the construction, pressure rating, and minimum burst pressure of the hose. R1 hose is the standard medium-pressure hydraulic hose used across the industry — so the P-MP-320 isn’t just rated for higher pressure on paper, it’s built with the hose construction that actually delivers it.
• Q: Can I use this reel for gasoline, diesel, or hydraulic fluid?
  A: The P-MP-320 is rated by Coxreels for air, water, and oil service. SAE 100R1 hose is widely used in hydraulic applications, but compatibility with fuels or specific hydraulic fluids depends on the seals, the hose inner liner, and the fluid itself. For fuel delivery, use a dedicated fuel reel with Viton or fuel-rated seals. For hydraulic fluid, confirm compatibility with Coxreels or your fluid supplier before putting the reel into service.
• Q: Why is the temperature rating lower with water (135°F) than with oil (212°F)?
  A: Water and synthetic fluids accelerate degradation of the hose’s inner liner at temperatures where petroleum oils are still well within tolerance. The 212°F rating applies to oil service; with water or synthetic fluid in the line, Coxreels caps the working temperature at 135°F to protect hose life. If you’re running hot water above that limit, you need a different reel.

Available Variations and Specifications