Jabsco 50890 Diaphragm Waste Pump, 5 GPM, 1-1/2 in Ports

Overview

The Jabsco 50890 Waste Pump is a DC diaphragm pump for moving black water from marine holding tanks, available in 12V and 24V versions. It delivers up to 5 US gpm (19 lpm), is self-priming up to 9.5 ft (3 m), and uses 1-1/2 in (38 mm) ports for common sanitation hose installations.

This waste pump is a practical fit for onboard holding tank evacuation where a compact inline pump is needed in a locker, machinery space, or service area. The single diaphragm layout can pass solids, runs without a pre-filter, and can tolerate dry running during normal waste transfer use.

Key features

• Up to 5 US gpm (19 lpm) flow for holding tank evacuation and other waste transfer jobs on board.
• Self-priming up to 9.5 ft (3 m), which helps when the pump is mounted away from the tank outlet.
• 1-1/2 in (38 mm) port connections match typical non-collapsible marine waste hose.
• No filter is required before the pump, reducing service points in sanitation plumbing.
• Multi-position ports and a rotatable pump head give more flexibility in tight installation spaces.
• Dry running capability helps protect the pump during tank emptying cycles.
• Corrosion-resistant parts suit damp marine spaces where sanitation equipment is often installed.
• Complies with USCG 183.410, ISO 8846 MARINE ignition protection, and ISO 8849 MARINE bilge pump standard requirements.

Variants

The Jabsco 50890 Waste Pump is offered in two electrical configurations for different onboard DC systems.

The voltage, maximum current, and fuse size vary between the two versions. The pump format, 1-1/2 in (38 mm) ports, self-priming capability, and waste pump application remain consistent across the 50890 range.

• 50890-1000: 12V, 8A maximum current, 10A maximum fuse size. This version matches boats with a 12V DC house or sanitation circuit.
• 50890-1100: 24V, 2.5A maximum current, 5A maximum fuse size. This version matches vessels with a 24V DC electrical system.

Installation and setup

The pump should be plumbed with 1-1/2 in (38 mm) ID non-collapsible waste hose on both inlet and outlet connections. Suction connections need to be airtight and routed without sharp bends or restrictions, since leaks or collapsed hose can reduce priming and flow.

The ports can be rotated to suit the hose route, and the pump head can be repositioned for the available mounting space. When mounted vertically, the motor should sit above the pump head. Rubber grommets are used to reduce vibration transfer into the mounting surface.

Electrical and safety notes

The pump motor is for intermittent duty and should not be run continuously for more than 30 minutes. The positive lead should be protected with the correct rated fuse or circuit breaker close to the power source, using the fuse size that matches the selected 12V or 24V version.

Electrical connections should be made in dry locations whenever possible. In damp or humid areas, sealed connections help limit corrosion, which is especially important on boats used in saltwater.

Use on board

This pump suits boats that need a dedicated waste transfer pump for holding tank evacuation without adding a separate pre-filter. It is also a sensible replacement choice when the existing installation already uses 1-1/2 in sanitation hose and the electrical system matches one of the available voltage options.

It is not for petrol, petroleum products, or liquids with a flash point below 100°F (37.8°C). If the discharge thru-hull sits below the waterline, the discharge hose requires a vented loop at least 8 in (20 cm) above the waterline at all angles of heel or trim.

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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