Galley Maid MR-10 Rotor — OEM Brass Replacement for MR-10 Series Positive Displacement Pumps
The Galley Maid MR-10 Rotor is the factory-correct brass rotor designed specifically for the MR-10 series positive displacement pump. The rotor is the heart of the pump's mechanical action — it spins inside the rubber stator, creating the eccentric movement that draws fluid in and pushes it out under pressure. When the rotor becomes worn, pitted, or corroded, the pump loses its ability to build and hold pressure, and flow rate drops noticeably. Replacing the MR-10 rotor is one of the most effective ways to restore a pump to full working condition without the cost of a complete pump replacement.
Made from durable brass, the MR-10 Rotor is built to handle continuous-duty demands in pressurized fluid systems. The six-screw nose housing design of the MR-10 pump calls for careful, uniform reinstallation — a process straightforward enough for experienced hands working with basic tools. The rotor pairs directly with the MR-10 Stator and Seal Set to form a complete pump end rebuild, making it an essential part to keep on hand for any installation running an MR-10 series pump. Galley Maid MR-10 components are made in the USA and trusted by service technicians and end users who demand reliability from their pumping equipment.
Key Features:
- OEM brass rotor designed specifically for the Galley Maid MR-10 series pump
- Machined brass construction for corrosion resistance and long service life
- Restores full pressure-building capability when paired with a serviceable or new MR-10 Stator
- Works in concert with the MR-10 Seal Set for a complete pump end rebuild
- Compatible with all standard MR-10 nose housing assemblies using 6-machine-screw configuration
- Made in the USA by Galley Maid Marine Products, Inc., Okeechobee, Florida
- Self-priming positive displacement pump rotor — suitable for demanding continuous-duty applications
Applications:
- Freshwater pressure systems on vessels, RVs, and remote installations
- Fluid transfer systems in industrial and commercial environments
- Pressurized water distribution in off-grid and liveaboard applications
- Replacement part for MR-10 pump end service and rebuild
- Suitable wherever the Galley Maid MR-10 series pump is installed
Specifications:
- Part Type: Replacement Rotor
- Compatible Pump Series: Galley Maid MR-10
- Material: Brass
- Configuration: 6-screw nose housing reinstallation
- Compatible With: MR-10 Stator, MR-10 Seal Set, MR-10 Pressure Switch, MR-10 Pressure Gauge
- Pump Type: Positive displacement (rotary vane design)
- Port Size: Matches standard MR-10 series inlet/outlet fittings
Frequently Asked Questions
Q: How do I know if the MR-10 Rotor needs to be replaced?
The most common sign is a pump that runs but fails to build or hold pressure. If you remove the nose housing and inspect the rotor, look for pitting, scoring, corrosion, or debris damage on the brass surface. A rotor that can be cleaned up with a wire brush and lacquer thinner may still be serviceable; one with deep scoring or physical damage should be replaced.
Q: Can I replace just the rotor, or do I need to replace the stator at the same time?
You can replace the rotor alone if the stator is still in good condition — snug on the rotor with no internal roughness or tears. However, since both components wear together, many technicians replace the rotor and stator together as a matched set to ensure the best seal and pump performance after reassembly.
Q: Is the MR-10 Rotor the same as the MR-7 Rotor?
No. The MR-10 and MR-7 are different pump sizes with distinct rotor and stator dimensions. The MR-10 nose housing uses six machine screws versus four bolts on the MR-7, and the stator flanging is also different. Always verify your pump model before ordering replacement parts.
Q: What other parts should I order when servicing an MR-10 pump?
A complete pump end service typically includes the MR-10 Rotor, MR-10 Stator, and the MR-10 Seal Set. The ceramic shaft seal should be inspected and replaced if any leakage is present. The Pressure Switch and Pressure Gauge can also be serviced independently if the pump is being fully rebuilt.
Q: Does the MR-10 Rotor require any special tools or lubricants to install?
No special tools are required. During reassembly, apply a small amount of silicone grease to the interior of the stator and the rotor surface before reinstalling the nose housing. Tighten the six machine screws uniformly, going around the housing several times in sequence to ensure even seating of the stator flange in the pump base groove.
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