Haight Pump 3U-VMS Internal Gear Pump with Viton Mechanical Seal
The Haight Pump 3U-VMS is a rugged internal gear pump engineered for dependable fluid transfer in industrial, commercial, and processing applications. Built with a durable ductile iron housing and fitted with a Viton mechanical seal, this pump is designed to handle oils, lubricants, fuels, chemicals, and other compatible fluids with reliable performance and long service life.
Its compact positive displacement design delivers smooth and efficient flow while minimizing internal wear and reducing operational noise. The 3U-VMS configuration is supplied without an integrated relief valve, making it ideal for systems that already incorporate external pressure protection or custom flow management setups. The pump’s gear-within-a-gear construction supports efficient fluid handling across a wide range of viscosities and operating environments.
Designed for industrial versatility, the Haight 3U-VMS is commonly used in lubrication systems, hydraulic equipment, machine manufacturing, fuel transfer operations, food processing support systems, and chemical circulation applications where dependable low-flow pumping is essential.
Key Features
- Heavy-duty ductile iron pump body construction
- Viton mechanical seal for enhanced chemical and temperature resistance
- Internal gear “gear-within-a-gear” positive displacement design
- Compact and rugged pump-end-only configuration
- Self-priming capability for efficient startup performance
- Reversible flow direction capability
- Designed for continuous-duty industrial applications
- Compatible with oils, lubricants, fuels, and select chemicals
- Standard motor-speed operation reduces drivetrain complexity
- No built-in relief valve configuration for custom system integration
Applications
- Industrial lubrication systems
- Hydraulic fluid circulation
- Petroleum and fuel transfer
- Machine tool lubrication
- Chemical processing systems
- Ink and adhesive transfer
- Soap and detergent manufacturing
- Food and beverage fluid handling
- Paper processing operations
- Mining and construction equipment systems
Specifications
- Manufacturer: Haight Pump
- Model: 3U-VMS
- Pump Type: Internal Gear Pump
- Flow Capacity: 3 GPM
- Construction Material: Ductile Iron
- Shaft Material: Steel
- Gear Material: Steel
- Rotor Material: Iron
- Seal Type: Viton Mechanical Seal
- Port Size: 3/4 in. NPT inlet and discharge
- Configuration: Pump End Only
- Relief Valve: No
- Rotation: Reversible
- Self-Priming: Yes
- Mounting Style: Round Hub
FAQ
What does “No RV” mean on the Haight 3U-VMS?
“No RV” indicates the pump is supplied without an integrated relief valve. This setup is commonly used in systems with external pressure regulation already installed.
What fluids can the Haight 3U-VMS handle?
The pump is suitable for compatible oils, petroleum products, lubricants, hydraulic fluids, detergents, inks, and select chemical solutions depending on viscosity and material compatibility.
Why is a Viton mechanical seal beneficial?
Viton seals provide improved resistance to heat, chemicals, oils, and aggressive industrial fluids compared to standard elastomer seals.
Is the Haight 3U-VMS self-priming?
Yes. The internal gear design supports self-priming operation and can develop strong vacuum performance in properly configured systems.
Can the flow direction be reversed?
Yes. The pump supports reversible operation without requiring extensive piping modifications.
Is this pump suitable for continuous industrial operation?
Yes. The heavy-duty construction and positive displacement design make it suitable for demanding continuous-duty industrial applications.
Does the pump include a motor?
No. The 3U-VMS is supplied as a pump-end-only unit without a motor.
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