Skip to main content

Humphrey Flow Control Products

Humphrey Products provides the latest technology in electronic flow control valves, known as proportional valves, that allow for a variable output flow of compressed air or pressurized inert gas based on a corresponding variable input current to the solenoid.

Our application and engineering staff will readily answer your questions, provide valve selection assistance, or discuss special modifications needed for specific applications. Call 800-477-8707 or fill out our technical services contact form for assistance.

View in Online Catalog
Flow Control Products


Proportional Solenoid Valve Features

Our proportional solenoid valves are used in various pneumatic applications, including medical devices, such as respiratory equipment, and analytical instruments, to factory automation, packaging, and material handling equipment. Our experience in design and engineering solves problems others cannot. We provide what you need, whether it’s off-the-shelf or a tailored calibration to your specific requirements.

Humphrey proportional solenoid valves are compact devices that feature:

  • Low hysteresis
  • Excellent repeatability and turn down ratios
  • Fast response times
  • Tight sealing and flexibility for equipment and device makers

Proportional flow control valve models include:

  • Small 2-Port Proportional Solenoid Valves
  • Large 2-Port Proportional Solenoid Valves
  • Proportional Solenoid Valve Driver (bench-top device conveniently operates proportional valves)
View in Online Catalog
Proportional Solenoid Valves


TAC Miniature Speed Controller

Complimenting the TAC Miniature Pneumatic Logic Line Up, Humphrey offers a manually adjustable flow control valve, model SC1, providing full flow in one direction and metered flow in the reverse direction. This design is commonly used to control air cylinder speeds by regulating the exhausting air. Humphrey SC1 is used in pneumatic logic time delay circuits as well.

Features of SC1 include:

  • Two ports; Full flow one direction, metered flow opposite direction
  • Manual speed controller
  • Inline 10-32 UNF piping
  • 3-125psi pressure range
View in Online Catalog
TAC Minature Speed Controller