2 Way Pneumatic Control Valves

The HB Series Stainless Steel 2-Way Control Valves are made to withstand the rigorous nature of steam service and are compatible with air and water as well. These stainless steel valves are a cost-effective alternative when compared to valves with bronze, cast iron or cast steel bodies. The standard configuration has an equal percentage flow characteristic with metal-to-metal seating, spring-loaded Teflon V-ring stem packing and Pneumatic Actuator. The Pneumatic Actuator is controlled by a 3-15 PSIG standard instrument air signal that will modulate the position of the valve.

The Actuator can be specified to operate the valve for either Air-to-Open (Normally Closed) or Air-to-Close (Normally Open), but can also be re-configured in the field if needed.

Ensure the maximum Close-Off Pressure of the valve exceeds the Inlet Pressure. This is necessary to guarantee the valve assembly will overcome the forces generated in the valve body from the fluid pressure, allowing the valve to open and close properly and completely. See the chart on the next page for Close-Off Pressures and Cv values for each valve body size. Select the proper valve size based on Cv values, connection, size and type.

Many different sizes and styles available – Call Apex for More Information

Description

2 Way Pneumatic Control Valves are capable of modulating flow at varying degrees between minimal flow and full capacity. It works in response to a signal from an external control device. The valve modulates flow through movement of a valve plug in relation to the port(s) located within the valve body. The valve plug is attached to a valve stem, which, in turn, is connected to the actuator. The actuator, which can be pneumatically or electrically operated, directs the movement of the stem as dictated by the external control device.

Options:

  • Electric Actuators
  • Positioner: Pneumatic, Electro-Pneumatic or Explosion-Proof
  • PID Electronic Controllers (TR890 Series)
  • I/P converters (Model TA901)
  • Air Filter Regulators (Air Sets-Model TA987)
  • Thermocouples
  • RTD’s
  • Pressure Transmitters

Application Data Sheet – Fill Out and Return for Accurate Quote