Haight Pump 40U-VMS Viton Mechanical Seal Internal Gear Pump
The Haight 40U-VMS is a rugged internal gear pump engineered for high-performance industrial fluid transfer applications. Built with a ductile iron housing and equipped with a Viton mechanical seal, this model is designed for durability, chemical resistance, and long service life in demanding operating environments. With a rated capacity of up to 40 GPM and pressure capability up to 250 PSI, it is widely used in lubrication systems, hydraulic equipment, and general industrial processing.
This pump belongs to the Haight 40U square flange series, known for its compact footprint and flexible mounting options. Its positive displacement internal gear design ensures smooth, pulse-free flow and excellent suction performance, even with viscous fluids. The VMS configuration enhances sealing reliability, making it suitable for petroleum-based fluids, machine tool lubrication, and heavy-duty industrial transfer systems.
Key Features
- Internal gear positive displacement design for smooth, consistent flow
- Viton mechanical seal for chemical and temperature resistance
- Ductile iron construction for industrial durability
- Self-priming capability with strong suction performance
- Bi-directional rotation capability
- Compact square flange mounting design
- Optional bolt-on relief valve compatibility
Applications
- Industrial lubrication systems
- Hydraulic power units
- Petroleum product transfer
- Machine tools and manufacturing systems
- Glue, ink, and chemical processing
- Automotive and marine auxiliary systems
- Paper, soap, and detergent production
- Food processing equipment (non-sanitary transfer use)
- Diesel fuel and oil handling systems
- General industrial fluid transfer
Specifications
- Model: Haight 40U-VMS
- Pump Type: Internal gear positive displacement
- Material: Ductile iron body, steel shaft and gears
- Seal Type: Viton mechanical seal
- Maximum Flow: 40 GPM (approx.)
- Maximum Pressure: 250 PSI
- Temperature Rating: Up to ~625°F (series dependent)
- Port Size: 1-1/2" NPT inlet & outlet
- Mounting: Square flange / close-coupled or base mount
- Rotation: Reversible
FAQ
What is the Haight 40U-VMS pump used for?
It is used for industrial fluid transfer including oil, petroleum products, lubricants, chemicals, and hydraulic fluids.
What type of seal does the 40U-VMS use?
It uses a Viton mechanical seal designed for chemical resistance and high-temperature applications.
Is the Haight 40U-VMS pump self-priming?
Yes, the internal gear design provides strong self-priming capability.
What is the maximum flow rate?
The pump is rated for approximately 40 gallons per minute depending on application conditions.
Can the pump rotate in both directions?
Yes, it is designed for bi-directional operation without affecting performance.
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