HTS offers two Pressure Independent Control Valves from Griswold Controls

When conventional 2-way valves in variable flow systems open or close, it causes a pressure change to other valves in the system. Griswold’s MVP ™ and PIC-V ™ pressure independent control valves, maintain the required flow rate regardless of these pressure changes. This also eliminates the need for balancing and provides everything an engineer, contractor, or building owner could want in an automatic flow control valve.

These valves modulate to the required fixed flow based on load (or zone) requirements. If the system pressure changes, the valves compensate for the pressure change and maintain constant flow rate without actuator cycling. The flow does not change until the control system tells the actuator to change the valve position based on load changes. This stable flow means less work for the actuator and increases actuator life.

• Combination balancing and temperature control valve
• Standard isolation ball valve and P/T ports (Optional union end connection)
• Available in ½” to 3” sizes
• Universal actuator mounting plate
• Low-Torque Actuator Design
• Ideal for air handling units, heating & cooling coils, fan coil units, Unit Ventilators, and VAV re-heat coils

Griswold PIC-V pressure independent valve (above right)

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• Combination balancing and temperature control valve
• Sizes from ½” up to 6”
• Union or Flanged end connections
• Ideal for applications where temperature variance cannot be risked, such as hospitals, laboratories, or prisons
• Great for balancing at reduced loads on applications such as office buildings, schools, or hotels

Griswold Controls MVP TM pressure independent valve

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The PIC-V & MVP pressure independent valves are yet another innovation from Griswold Controls -The company that introduced the first automatic flow control valve to the HVAC industry.