Jabsco Accumulator Tanks, 10 PSI Pre-Charge, 125 PSI Max Pressure

Overview

This Jabsco accumulator tank range is a pressure buffer for boat water systems that helps smooth flow at outlets and reduce rapid pump cycling. The range includes 1 liter and 0.65 liter capacities, with both versions pre-charged to 10 psi (0.7 bar) and rated for a maximum operating pressure of 125 psi (8.6 bar).

Installed on the discharge side of a pressure pump, the tank stores a small reserve of pressurized water and uses an internal bladder to absorb pressure changes. On board, that means steadier flow at a galley tap or shower, less pump chatter, reduced pipe hammer, and better control of hot water temperature when the system uses an instant water heater.

Key features

• Internal bladder helps dampen pressure pulses between the pump and the outlets.
• Reduces on/off cycling, which can lower pump noise and ease battery demand during normal freshwater use.
• Pre-charged to 10 psi (0.7 bar), with pressure adjustment available through the air valve when the pump cut-in pressure requires tuning.
• Maximum operating pressure of 125 psi (8.6 bar) for pressure-controlled marine water systems.
• Can be fitted into new installations or added to an existing pressurized water system.
• Compact tank options support different spaces around the pump, water heater, or service locker.

Variants

This product is offered in two capacity configurations for different installation spaces and water system layouts.

The capacity, construction details, dimensions, and port style vary by variant. Both versions use an internal bladder and are intended to smooth water flow and reduce pump cycling in pressurized water systems.

• 30573-0000, Capacity 1 Liter. This version has a 34 fl oz (1 liter) tank with impact and pressure resistant plastic construction, a nitrile bladder, snap-in port fittings, and dimensions of 13-1/4 in (337 mm) by 4-3/4 in (121 mm).
• 30573-0003, Capacity 0.65 Liter. This mini version has a 21.5 oz (0.65 L) internal volume, a nylon shell with butyl liner and stainless steel fasteners, quick-connect/disconnect port fittings, and dimensions of 8.4 in (214 mm) long by 4.7 in (119 mm) wide.

Installation and setup

The accumulator tank installs in-line on the discharge side of the pump. It should be positioned where the hose run can be secured properly and where the air valve remains accessible for pressure checks. Flexible braided hose helps reduce transmitted vibration and should be rated for the pressure expected in the system.

Before adjusting the pre-charge, switch off power to the pump and open a faucet to relieve system pressure. Tank pressure can then be checked with a standard tire gauge and adjusted with a tire pump at the air valve. After installation, run water through the pump and final discharge point to clear air from the system.

Compatibility and use on board

This range is a practical match for boats with pressure-switch freshwater pumps serving sinks, showers, or water heaters. The 1 liter model suits installations with a little more room and a need for a larger pressure buffer, while the 0.65 liter model fits smaller spaces where a compact accumulator is easier to place near the pump.

The 0.65 liter model may also be used with air-driven pump systems. For any installation, a relief valve set no higher than 125 psi (8.6 bar) on the pump discharge side helps protect the water system if a pressure switch fails.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Orders of $100 or more qualify for free shipping when eligible. For orders under $100, shipping costs are calculated at checkout based on destination, package weight, and selected service. International shipping is available for eligible products, and certain items may require additional handling, warehouse transfers, or may ship directly from the manufacturer, which can affect processing time.

Deliveries are handled by preferred carriers such as USPS, UPS, FedEx, DHL, and others depending on your location and selected service. Estimated delivery times are displayed at checkout and may vary due to customs processing, carrier delays, weather, postal disruptions, or other circumstances beyond our control. Once your order ships, you'll receive a confirmation email with tracking information. Tracking may take up to 24 hours to update on the carrier's website and is also available through your account when applicable.

We ship throughout the United States and to most international destinations for products eligible for international shipping. International orders may be subject to customs duties, taxes, brokerage charges, or other import fees, which are the customer's responsibility and are not included in the product or shipping price. PO Boxes are accepted only when shipping through USPS, and not all packages qualify for this option. If your order does not arrive within the estimated delivery window, please contact us at info@apollolighting.com or +1 (954) 375-0100 so we can assist with locating your package.

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Returns may be requested within 30 days of receiving your order. Items must be unused, uninstalled, unaltered, and returned in their original packaging with all tags, packing materials, blank warranty cards, manuals, instructions, accessories, and included items. Certain products, including installed or used electronics, electrical components, lighting, consumables, custom or special-order items, cut-to-length products, safety equipment, and merchandise exposed to water or marine conditions, may not be eligible for return.

To request a return, sign in to your account and select the applicable order and items, and submit your request for review. Eligible unfulfilled items may also be submitted for cancellation within 1 hour of placing the order. Returns or cancellations are not considered approved until you receive confirmation from Apollo Lighting. Please do not ship or drop off merchandise before receiving return approval and instructions.

Customers are responsible for arranging and paying for return shipping unless the return is due to an error by Apollo Lighting or the item is verified as defective, damaged, or incorrect. Missing, damaged, defective, or incorrect items must be reported within 2 business days of delivery, and photos or other documentation may be required for review. If the issue is verified, Apollo Lighting may provide or reimburse return shipping and issue a replacement or refund depending on the circumstances. International customers are responsible for return shipping, duties, taxes, customs charges, brokerage fees, and other costs associated with an international return.

After your return is received and inspected, approved refunds are issued to the original payment method and may take 5-7 business days to appear after processing. Original shipping and handling charges are nonrefundable, and the value of any included free items that are not returned may be deducted from the refund. Apollo Lighting does not charge a standard restocking fee on eligible returns. Returns that are incomplete, damaged, installed, used, altered, improperly packaged, or otherwise do not meet the eligibility requirements may be refused. We recommend using a trackable and appropriately insured shipping service for all customer-arranged returns.

For assistance, contact info@apollolighting.com or call +1 (954) 375-0100.

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Many products sold by Apollo Lighting include a manufacturer's warranty covering defects in materials or workmanship. Warranty terms vary by brand, product category, and model, so eligibility, coverage duration, exclusions, and available remedies are determined by the applicable manufacturer. We recommend reviewing the warranty information provided with your product before installation or use, especially for marine electronics, navigation equipment, lighting, electrical systems, pumps, safety equipment, and other specialized marine products.

If you need warranty service, the claim must follow the process established by the manufacturer, authorized service center, or designated warranty provider. You may be asked for proof of purchase, a serial number, product registration, photos, maintenance or installation records, or other documentation. Apollo Lighting does not determine or modify a manufacturer's warranty coverage or final claim decision, but we are happy to help provide purchase information and direct you to the appropriate manufacturer or warranty resource.

Keep your receipt, product documentation, serial number information, and original packaging when practical. Damage caused by normal wear, misuse, improper installation, insufficient maintenance, corrosion, impact, unauthorized modifications, electrical issues, or operation outside the manufacturer's specifications may not be covered. Warranty claims are separate from standard returns, so a product that has been installed, used, or exposed to marine conditions may no longer qualify for return while still remaining eligible for evaluation under the manufacturer's applicable warranty.

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