Johnson Pumps 09-36572-02 Marine Accumulator Tank 2L 3/4" Hose Connection

The Johnson Pumps 09-36572-02 is a 2-liter (0.5 gallon) marine accumulator tank designed to improve the performance and longevity of onboard water pressure systems. Featuring a 3/4" (19mm) T-fitting hose barb connection, this tank installs inline between the water pump and the distribution plumbing to smooth out pressure fluctuations and reduce unnecessary pump cycling.

By storing pressurized water in an internal rubber bladder, the accumulator tank extends the intervals between pump cut-in and cut-out cycles when only small amounts of water are drawn off. The result is noticeably steadier water flow at taps and fixtures, reduced system noise, and significantly less wear on the pump motor — extending the overall service life of the system.

Key Features:

• 2-liter (0.5 gal) capacity with internal rubber bladder
• 3/4" (19mm) T-fitting hose barb port connections
• Pre-pressurized at 12 psi (0.8 bar) from the factory
• Maximum working pressure: 145 psi (10 bar)
• Corrosion-protected steel tank body
• Includes stainless steel mounting bracket
• Standard tire-type air valve for easy pressure adjustment
• Can be mounted in any orientation for installation flexibility

Specifications:

• Volume: 2 L / 0.5 gal
• Hose Connection: 3/4" (19mm) hose barbs
• Height: 10.63 in (270 mm)
• Diameter: 5.7 in (145 mm)
• Weight: 2.9 lbs (1.3 kg)
• Pre-charge Pressure: 12 psi / 0.8 bar
• Max Working Pressure: 145 psi / 10 bar

Recommended for use with Johnson Pump Aqua Jet WPS water pressure system pumps and washdown pumps, this accumulator tank is a straightforward upgrade for any marine, RV, or marine freshwater plumbing system where pump pulsation or short-cycling is an issue.