Haight Pump 3UR-VMS 3/4 Inch Viton Seal Gear Pump with Relief Valve
The Haight Pump 3UR-VMS 3/4 inch internal gear pump is a rugged, positive displacement pump engineered for industrial fluid transfer applications requiring durability, precision, and long service life. Built with a ductile iron housing and steel internal components, this pump is designed to handle demanding environments including lubrication systems, hydraulic circuits, and general industrial processing.
Equipped with a Viton mechanical seal, the 3UR-VMS model provides excellent resistance to heat and chemical exposure, making it suitable for petroleum-based fluids and various industrial liquids. Its internal “gear-within-a-gear” design ensures smooth, low-pulsation flow, while the integrated relief valve helps protect the system from overpressure conditions.
This pump supports reversible operation, self-priming capability, and direct motor mounting compatibility, making it highly adaptable for OEM systems and retrofit installations. It is widely used across manufacturing, machine tools, hydraulic systems, and fluid handling processes.
Key Features
- Internal gear-within-gear design for smooth, consistent flow
- 3/4 inch NPT inlet and discharge ports
- Viton mechanical seal for heat and chemical resistance
- Built-in relief valve for overpressure protection
- Reversible flow capability (bi-directional operation)
- Self-priming positive displacement design
- Ductile iron construction for industrial durability
- Compatible with NEMA motor mounting systems
Applications
- Industrial lubrication systems
- Hydraulic power units
- Machine tool fluid circulation
- Petroleum and fuel transfer systems
- Ink, glue, and chemical processing
- Manufacturing equipment fluid supply
- Automotive and heavy machinery systems
- General OEM industrial pumping systems
Specifications
- Pump Type: Internal gear positive displacement pump
- Material: Ductile iron body, steel gears and shaft
- Seal Type: Viton mechanical seal
- Port Size: 3/4 inch NPT inlet/discharge
- Flow Type: Reversible, self-priming
- Relief Valve: Integrated (universal operation design)
- Maximum Operating Pressure: ~250 psi (series dependent)
- Maximum Temperature: Up to ~620°F (seal dependent, application specific)
- Design: Gear-within-gear rotary system
- Mounting: Close-coupled or bracket-mounted to motor
FAQ
What is the Haight 3UR-VMS pump used for?
It is used for industrial fluid transfer including lubrication systems, hydraulic equipment, and general manufacturing processes.
Is the Haight 3UR-VMS pump reversible?
Yes, the internal gear design allows reversible operation without modification to piping.
What makes the Viton seal important?
The Viton mechanical seal improves resistance to heat, oils, and many industrial chemicals, extending pump lifespan.
Does this pump require a motor?
Yes, it is typically mounted to a compatible electric motor for operation.
Can it handle continuous duty operation?
Yes, it is designed for continuous industrial use in demanding environments.
Does the pump include a relief valve?
Yes, it includes an integrated relief valve for pressure protection and system safety.
What industries commonly use this pump?
Manufacturing, automotive, hydraulic systems, chemical processing, and machinery lubrication industries commonly use it.
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