Haight 10UR-VMS Ductile Iron Gear Pump with Viton Mechanical Seal and Relief Valve
The Haight 10UR-VMS is a 10 GPM ductile iron internal gear pump built on Haight's gear-within-a-gear design, which keeps three teeth in contact at all times for a smooth, pulse-free flow with less internal bypass and quieter operation than typical gear pumps. This VMS configuration comes fitted with a Viton mechanical seal in place of a standard lip seal, giving it broader chemical compatibility and making it a solid choice for fluids and operating conditions that call for tighter sealing performance. The pump body carries a bolt-on relief valve that protects the system from pressure spikes, and because the internals are symmetrical, the valve can be set up for either clockwise or counter-clockwise rotation.
This pump ships as a square-flanged pump end only, without a motor, so it can be close-coupled directly to a compatible frame or mounted on a footed bracket, with Haight's bracket design meant to keep the pump and motor shafts aligned without shimming. It is self-priming and capable of pulling up to 27 inches of vacuum, which makes it well suited to drawing fluid from tanks or sumps rather than relying on flooded suction. Because the seal style is field-convertible through Haight's UniverSeal design, shops that stock 10U series pumps can move between lip seals, mechanical seals, and packed gland seals on the same housing as duty requirements change.
Owners running the 10UR-VMS typically use it for transferring oils, fuels, lubricants, and other industrial fluids where a dependable, low-maintenance gear pump is needed, whether that is on a piece of processing equipment, a fuel or lube skid, or a mobile unit. The combination of ductile iron construction, a Viton mechanical seal, and an integral relief valve gives it the durability and pressure protection that repeat-duty industrial and commercial applications call for, and it's worth noting up front that this is not exclusively a marine pump; it's just as much at home in general industrial, automotive, and processing settings.
Key Features
- Gear-within-a-gear design for pulse-free flow with reduced internal bypass and lower noise
- Viton mechanical seal (VMS) for enhanced chemical resistance over standard lip seals
- Built-in, bolt-on relief valve with adjustable tension spring for return-to-suction or return-to-tank protection
- Symmetrical construction allows clockwise or counter-clockwise rotation setup
- Self-priming operation with up to 27 inches of vacuum lift
- UniverSeal design allows field conversion between lip seal, mechanical seal, and packed gland seal
- Ductile iron housing with self-lubricating iron bearings for long service life
- Square-flange pump end for close-coupled or footed mounting to standard motor frames
Applications
- Fuel, oil, and lubricant transfer
- Hydraulic fluid circulation
- Industrial and processing equipment
- Chemical transfer where Viton compatibility is required
- Automotive and mobile equipment fluid systems
- General industrial fluid handling (not limited to marine use)
Specifications
- Model: 10UR-VMS
- Pump type: Internal gear pump, gear-within-a-gear design
- Rated flow: 10 GPM
- Port size: 1 inch NPT inlet and discharge
- Seal type: Viton mechanical seal
- Relief valve: Integral, adjustable, bidirectional-capable
- Housing material: Ductile iron
- Shaft and gears: Steel
- Bearings: Self-lubricating iron
- Vacuum capability: Up to 27 inches
- Configuration: Pump end only, less motor
Frequently Asked Questions
Q: What does the VMS designation mean on this Haight pump?
VMS indicates that the pump is fitted with a Viton mechanical seal rather than the standard lip seal, which gives it improved resistance to a wider range of fluids and operating temperatures.
Q: Does the 10UR-VMS come with a motor included?
No. This model is a pump end only, designed to be close-coupled or footed-mounted to a separately supplied motor using a compatible bracket.
Q: Can the rotation direction be changed on this pump?
Yes. Because the internal components are symmetrical, the pump and its relief valve can be configured for either clockwise or counter-clockwise rotation.
Q: What kind of fluids is the Viton mechanical seal best suited for?
Viton offers broader chemical resistance than standard Buna seals, making this configuration a good fit for oils, fuels, and other fluids that require a more chemically resistant seal material.
Q: Is this pump only used in marine applications?
No. While it is available through marine suppliers, the 10UR-VMS is a general-purpose industrial gear pump used across automotive, processing, chemical, and fluid transfer applications, not just marine systems.
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