12 V discharge pump – code: 50890-1000 (0325089012) – Jabsco

12 V Jabsco 50890-1000 (0325089012) diaphragm discharge pump

The 12 V Jabsco discharge pump with original reference 50890-1000 (Jabsco Italy code 0325089012) is a solution dedicated to onboard discharge management, designed for applications such as black water and service discharges. The design with a diaphragm favors practical installation and orderly pipe management, thanks to the adjustable head which allows adjusting the position of the fittings according to the available spaces.

This pump is suitable for systems with 12 V and is offered as a component for discharge systems where mounting flexibility, compact size, and a configuration suitable for the marine environment are needed.

Main features and details

Type and configuration

• Pump type: diaphragm discharge pump.
• Power Supply: 12 V.
• Adjustable head: swivel head at 360° for multiple installation possibilities.
• Dry operation: suitable for dry operation without damage.
• No pre-filter: version without pre-filter.

Declared performance

• Flow rate: up to 19 liters/minute (also indicated as 4.2 gallons/minute).
• Self-priming: up to 3 m.
• Maximum head: 4 m.
• Continuous operation: up to 30 minutes.

Connections and dimensions

• Hose fitting (inlet/outlet): for hose of 38 mm (1-1/2”).
• Dimensions: 278 mm (length) × 161 mm (width) × 132 mm (height).
• Weight: about 3 kg.
• Hose holder positioning: adjustable as needed to facilitate installation.

Power consumption and protection

• Maximum absorption: 8 A (12 V).
• Recommended fuse: 10 A (12 V).
• Protected mechanical parts: for increased safety.

Product codes

• Original ref: 50890-1000
• Jabsco Italy code: 0325089012

Typical onboard applications

The Jabsco 50890-1000 pump is suitable for discharge applications in the nautical field, particularly where a diaphragm pump with 38 mm diameter connections and the ability to orient the head to simplify pipe routing is useful.

• Black water discharge: ideal for black water tanks, as stated in the description.
• Service discharges: intended use for sink and shower (as per usage specification).
• Systems with reduced technical spaces: the adjustable head helps manage complex layouts and reduce bends and stresses on the hoses.

Operational advantages

More flexible installation

The 360° swivel head and the adjustable positioning of the hose holder allow adapting the pump to different system configurations. This is particularly useful when complying with an existing piping route or when working in technical compartments with limited accessibility.

Discharge management with diaphragm pump

Diaphragm technology is often chosen for discharge applications where a compact and easy-to-install solution is desired. In this version, the absence of a pre-filter must be considered during system design, evaluating the overall configuration and operating conditions.

Declared “dry” operation”

The ability to dry running (as stated in the description) is a useful feature in the daily management of the system, for example in startup situations or during draining phases. It is still good practice to always check installation conditions and intended use.

Protected components

The presence of protected mechanical parts is a detail that contributes to a tidier and safer management in the technical compartment, especially in contexts where frequent movements or maintenance may occur.

Usage and installation notes

Electrical indications

For systems at 12 V, the product sheet reports a maximum current draw of 8 A and a 10 A fuse. During installation, it is advisable to properly size wiring and protections based on the onboard system and applicable regulations.

Hydraulic connections

Connections are provided for pipe size 38 mm (1-1/2”). To achieve a clean installation and reduce the risk of leaks, it is appropriate to use pipes suitable for the application and adequate clamps, checking the alignment of fittings according to the head orientation.

Positioning and priming

The pump is rated self-priming up to 3 m and with maximum head 4 m. In practice, the result depends on the system configuration (route, bends, pipe length, and operating conditions). The adjustable head helps optimize the layout and limit critical passages.

Continuous use

An continuous operation up to 30 minutes. For correct use, it is advisable to respect this indication and plan usage according to the discharge cycles expected onboard.

Quick summary

• Model: Jabsco 50890-1000
• Code: 0325089012
• Power Supply: 12 V
• Flow rate: up to 19 L/min
• Connections: 38 mm (1-1/2”)
• Dimensions: 278 × 161 × 132 mm

FAQ – Frequently Asked Questions

Is this Jabsco pump suitable for black water?

Yes. The description indicates use for black water discharge and it is listed as ideal for black water tanks.

What is the diameter of the pipe connections?

The connections (inlet/outlet) are designed for 38 mm (1-1/2”) pipe.

Is the pump head rotatable?

Yes. A 360° swivel head is indicated to offer greater installation flexibility.

What are the power consumption and recommended fuse for the 12 V version?

For 12 V, a maximum consumption of 8 A and a recommended fuse of 10 A are indicated.

What are the dimensions of the pump?

The dimensions are 278 mm (length) × 161 mm (width) × 132 mm (height), with a weight of about 3 kg.