SEAFLO 2-Gallon Pre-Pressurized Accumulator Tank — Red, 87 PSI, 3/4" MNPT, Compact for RV & Marine

SEAFLO’s 2-gallon pre-pressurized accumulator tank smooths water flow and cuts pump cycling for RVs, boats, and off-grid systems. This compact expansion tank holds two gallons of water and arrives pre-charged for faster installation. Built to withstand up to 87 PSI and featuring a 3/4" MNPT connection and a Schrader air valve, it reduces pump wear, dampens pressure spikes, and conserves battery or electrical power in mobile and remote water systems. The corrosion-resistant finish and space-saving form make it practical for tight compartments aboard boats, motorhomes, and small cabins.

How does this tank reduce pump cycling and extend pump life?

The accumulator stores a small buffer of pressurized water so the pump does not need to start for every small demand. That reduces on/off cycles, which lowers mechanical stress and electrical draws, extending pump life and saving energy.

• Pre-charged air bladder absorbs small draws without pump start.
• Adjustable Schrader valve lets you fine-tune cut-in pressure.
• Less frequent starts mean reduced motor wear and battery drain.

Will this improve water flow and stop water hammer?

Yes — the tank evens out pressure fluctuations and cushions sudden valve closures to reduce water hammer. That yields steadier, quieter flow at showers, faucets, and fixtures.

• Pressure dampening smooths surges for consistent fixture performance.
• Noise and vibration reduction improves onboard comfort.
• Compatible with typical household-style fixtures used in RVs and boats.

How easy is installation and pressure adjustment?

Installation is straightforward thanks to the 3/4" MNPT inlet/outlet and compact footprint designed for tight spaces. The top-mounted Schrader valve makes it simple to check and adjust the internal air charge with a standard bicycle pump or pressure gauge.

• 3/4" MNPT thread fits standard plumbing connections for fast hookup.
• Pre-pressurized out of the box for quicker commissioning.
• Accessible Schrader valve simplifies maintenance and tuning.

Is this tank durable enough for marine and off-grid use?

The SEAFLO accumulator features rugged construction and a corrosion-resistant coating designed to hold up in harsh marine and outdoor environments. Rated to 87 PSI, it meets pressures encountered in many mobile water systems while delivering long-term reliability.

• High-pressure design suitable for RV, boat, and cabin systems.
• Protective finish resists saltwater corrosion and outdoor exposure.
• Backed by SEAFLO’s 4-year limited warranty for peace of mind.

Who is this for: This tank is ideal for RV and marine owners, boat builders, off-grid homeowners, and anyone running small pressurized water systems who want quieter operation, fewer pump cycles, and improved energy efficiency. It suits installations where space is limited but reliable pressure buffering is needed, such as under sinks, in lockers, or within equipment bays. Technically minded users who want a simple, adjustable accumulator with a Schrader valve will find this compact SEAFLO model especially practical.

FAQ

Q: Do I need to adjust the air pressure before use?

A: It arrives pre-pressurized, but check and fine-tune the Schrader valve to match your pump cut-in pressure for best performance.

Q: What fittings are required to connect this tank?

A: The tank uses a 3/4" MNPT inlet/outlet; use matching threaded plumbing adapters for your system.