Imperial Flange and Fitting   P.O. Box 352262  Los Angeles, California 90035 (USA)

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Automatic Accessible Flow Controls - Flow Control Valves with Accessible Cartridge
The Griswold Automatic Flow Control Valve is used in many different applications, mostly in the HVAC industry to maintain balance in a HVAC System. The Automatic Flow Control has a spring loaded cartridge that dynamically absorbs pressure fluctuations resulting from changing flow conditions due to varying heating/cooling loads. These fluctuations in pressure, within a given pressure differential control range, do not change the flow through the valve, therefore the flow is controlled to within +/- 5% of the designed flow.

Automatic Flow Controls do not require any additional balancing as do Manual Balancing Valves, therefore they reduce labor costs from not having to balance and rebalance the valves. Automatic/Accessible means you can service the valve or exchange the flow control cartridge if your system flow requirements change, without having to break pipe connections. Simply remove the cap and exchange the cartridges.

Click on the images to access detailed pdf files:

F-4078 1/2"SS - 3" (pdf)

Isolator R

K Valve
F-2852 1/2"SS - 3" (pdf)

K Valve

F-4093 1/2" - 2" (pdf)

Additional Design and Description

F-4205 1-1/2" - 3" (pdf)

Additional Design and Description