Jabsco Pressurized Accumulator Tank — 33 oz, Pre-Charged to 10 PSI (30573-0000)
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Jabsco Pressurized Accumulator Tank — 33 oz, Pre-Charged to 10 PSI
A compact accumulator tank that makes a noticeable difference in how your onboard freshwater system feels and performs. The Jabsco 30573-0000 installs in any pressure-switch-controlled freshwater system and serves two functions: it stores pressurized water to reduce how often the pump cycles on and off, and it smooths out the pulsing flow that diaphragm pumps are known for. The result is quieter operation, longer pump life, and more even water pressure at the tap — including better hot/cold temperature control with instant water heaters. Pre-pressurized to 10 PSI with an internal bladder, and includes both 1/2" barbed and 1/2" threaded snap fittings for flexible installation.
Key Features
- Reduces pump on/off cycling — extends pump life and quiets operation
- Smooths pulsing flow from diaphragm pumps for steady, even pressure at the tap
- Improves hot/cold temperature control with instant water heaters
- Internal bladder separates air charge from system water
- Pre-pressurized to 10 PSI — ready to install
- Includes 1/2" barbed and 1/2" threaded snap fittings for flexible connection options
- Compact 33 oz capacity — fits in tight bilge and under-counter spaces
- Compatible with any pressure-switch-controlled pumped water system
Compatible Applications
- Any 12V or AC marine freshwater pressure pump system with a pressure switch
- Jabsco Par-Max pump installations
- SHURflo Aqua King II and other diaphragm pump systems
- Instant water heater systems requiring even flow for temperature stability
- Tight installations where a compact accumulator tank is required
Parts Desk Insights
The Jabsco 33 oz accumulator is the right choice for smaller boats, single-fixture systems, or any installation where space is tight and a full-size tank won’t fit. It delivers a meaningful improvement in pump cycling and flow smoothness even at its compact size. For larger boats or systems where maximum pressure storage is the priority, the GROCO PST-1 Pressure Storage Tank is the full-size alternative rated to 100 PSI. For the smallest possible footprint, the Mini Accumulator Tank is the most compact option in the catalog. Compatible freshwater pumps include the Jabsco Par-Max 1 GPM, Jabsco Par-Max 2 GPM, Jabsco Par-Max 3 GPM, and the SHURflo Aqua King II 3.0 GPM.
Part Number: 30573-0000 | Capacity: 33 oz | Pre-Charge: 10 PSI | Fittings: 1/2" Barbed & 1/2" Threaded (included)
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
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For return authorization, please contact our support team before shipping anything back.