SEAFLO 39 oz (1.0 L) Accumulator Tank for Water Pumps — Reduces Pump Cycling, Pre-Charged Bladder

The SEAFLO 39 oz (1.0 L) pressurized accumulator tank is a compact, pre-charged bladder tank that evens out water pressure, reduces pump cycling, and smooths flow in marine, RV and off-grid potable water systems.

This compact accumulator is built around a pre-pressurized internal bladder that stores a small reserve of water and dampens pressure spikes so pumps run less often and water delivery feels steady. With NSF testing for potable water contact and robust construction for mobile environments, it fits where space is limited but reliable pressure control is needed. The tank is maintenance-free, mounts in any orientation, and connects via common 1/2" MNPT fittings for fast installation.

How does this accumulator tank reduce pump cycling?

By holding a small volume of pressurized water, the tank takes the immediate demand off the pump for short draws. That prevents the pump from turning on and off for every small faucet use, decreasing wear and noise while improving energy use—especially important for battery or inverter-powered systems.

• Pre-charged internal bladder prevents waterlogging and stores a ready volume.
• 1.0 L (33.8 oz) internal volume smooths out short, repeated draws.
• Pre-charge at 10 PSI balances with system settings to minimize short-cycling.
• Designed to lower mechanical stress on pumps in marine, RV, and off-grid setups.

Will this improve shower and faucet performance?

Yes — the accumulator reduces sudden surges and drops in pressure so flow is more consistent when faucets or showers are opened. That steadier delivery helps maintain a more comfortable temperature and avoids abrupt bursts that can disrupt use of appliances and fixtures.

• Absorbs pressure spikes for smoother flow at taps and shower heads.
• Helps stabilize hot water delivery during brief demand changes.
• Useful for on-board galley appliances and pressure-sensitive fixtures.
• Compatible with potable water systems to preserve taste and safety.

What are the installation and compatibility details?

The SEAFLO accumulator uses a 1/2" MNPT inlet/outlet and a standard automotive-style air fill valve for adjusting pre-charge. Its compact size and ability to mount vertically, horizontally or inverted make it adaptable to tight spaces and varied orientations found in boats, RVs and off-grid plumbing runs.

• Inlet/Outlet: 1/2" MNPT for common plumbing connections.
• Pre-charge valve: standard tire-style Schrader valve for easy adjustment.
• Mounting: universal orientation—vertical, horizontal or inverted.
• Operating range: pre-charge 10 PSI; max pressure 125 PSI (8.6 BAR).

How durable and safe is it for drinking water?

Materials and testing make this accumulator suitable for potable water systems; it has been evaluated to relevant NSF standards for contact with drinking water and for performance safety. Construction resists the vibration and humidity common to marine and mobile environments so functionality remains reliable over time.

• NSF/ANSI/CAN 61 & 372 tested for potable water contact.
• Evaluated to NSF 24 and UL 778 performance and safety standards.
• Solid construction for long-term use in mobile and marine conditions.
• Four-year warranty supports expected service life in demanding settings.

Who is this for: The SEAFLO 1.0 L accumulator is aimed at boat owners, RV enthusiasts, vanlifers and off-grid system installers who need to reduce pump wear, quieten systems, and smooth short-term water demand without adding significant bulk. It’s particularly helpful when electrical power is limited, when pump longevity matters, or where consistent faucet and shower performance improves onboard comfort.