Haight 10UR Ductile Iron Gear Pump with Viton Lip Seal and Relief Valve
The Haight 10UR is a rugged internal gear pump built for shops and facilities that need dependable fluid transfer without babysitting the equipment. Rated for up to 10 GPM, it's a pump-end-only unit designed to bolt straight onto a standard motor with a close-coupled, square-flanged mount, so there's no shimming or alignment guesswork during installation. Inside, an involute gear design keeps operation quiet while delivering strong suction performance, and the pump is self-priming enough to pull up to 27 inches of vacuum, which makes it a solid choice for applications where the fluid source isn't gravity-fed straight into the inlet.
What sets this particular configuration apart is the pairing of a Viton lip seal with a built-in, self-adjusting relief valve. The Viton seal holds up well across a broad range of temperatures and is compatible with a wider spread of fluids than standard elastomers, which matters when a pump gets moved between jobs or fluid types over its service life. The relief valve adds a layer of protection against deadheading or pressure spikes, automatically bypassing flow back to the inlet side when pressure climbs too high, so operators don't have to install a separate external bypass line. Because the pump runs bidirectionally, it can also be reconfigured for either suction-return or tank-return plumbing without swapping parts.
Built from ductile iron with a steel shaft and gears and self-lubricating graphite-iron bearings, the 10UR is meant to be worked hard and serviced easily when the time comes. Its seal design allows for straightforward replacement without a full teardown, which keeps downtime short. It shows up across petroleum handling, hydraulic power units, industrial lubrication systems, machine tool coolant loops, automotive service equipment, and marine engine or fluid transfer setups, making it a genuinely multi-purpose pump rather than one built for a single niche.
Key Features
- Built-in, self-adjusting relief valve protects against overpressure and deadheading without a separate bypass line
- Viton lip seal standard for broad fluid and temperature compatibility
- Bidirectional rotation supports either suction-return or tank-return plumbing configurations
- Self-priming design capable of pulling up to 27 inches of vacuum
- Close-coupled, square-flanged mounting bolts directly to the motor without shimming
- Self-lubricating graphite-iron bearings reduce wear and extend service intervals
- Involute gear design lowers operating noise and improves suction efficiency
- Simplified seal replacement without requiring full pump disassembly
Applications
- Petroleum and fuel oil transfer
- Hydraulic power units and fluid power systems
- Industrial lubrication systems
- Machine tool coolant and cutting fluid circulation
- Automotive service and fluid transfer equipment
- Marine engine and fluid transfer systems
- Food and specialty fluid handling with compatible seal materials
- General industrial and manufacturing fluid transfer
Specifications
- Model / Part Number: Haight 10UR
- Pump Type: Internal gear, positive displacement, pump end only (motor not included)
- Flow Rate: Up to 10 GPM
- Port Size: 1" NPT inlet and 1" NPT discharge
- Maximum Discharge Pressure: 250 PSI
- Seal Type: Viton lip seal
- Relief Valve: Built-in, self-adjusting
- Rotation: Bidirectional
- Housing Material: Ductile iron
- Shaft and Gear Material: Steel
- Rotor and Bearings: Iron, self-lubricating
- Mounting Style: Square-flanged, close-coupled or footed
Frequently Asked Questions
Q: What fluids is the Haight 10UR pump best suited to handle?
A: With its Viton lip seal, the 10UR is compatible with a wide range of fluids including petroleum products, hydraulic oil, lubricating oil, and many industrial fluids. Because seal compatibility depends on the specific chemical makeup of your fluid, it's worth confirming compatibility for anything outside typical oils and fuels before putting it into continuous service.
Q: Does the Haight 10UR come with a motor included?
A: No. The 10UR is sold as a pump end only, meant to be close-coupled or footed to a customer-supplied motor at standard motor speeds, so no gear reducer is needed.
Q: How does the 10UR differ from the standard Haight 10U model?
A: Both share the same ductile iron gear pump platform and 10 GPM rating, but the 10UR adds a built-in, self-adjusting relief valve that the base 10U does not include, giving it built-in overpressure protection without an external bypass.
Q: Can the Viton lip seal be replaced without removing the entire pump from service?
A: Yes. The 10UR's seal design allows for the seal to be serviced without a complete teardown of the pump, which keeps maintenance time and downtime relatively short compared to fully sealed designs.
Q: Is the Haight 10UR pump a good fit for higher-viscosity fluids?
A: Gear pumps like the 10UR generally handle thicker fluids well since they rely on positive displacement rather than centrifugal force, but very high-viscosity applications should be reviewed against the pump's flow and pressure ratings to confirm it meets the specific job requirements.
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