Greystone GFS Pressure Switches

The GFS air pressure switch is a general purpose airflow proving switch designed for HVAC and Energy Management applications. It may be used to sense positive, negative, or differential air pressure.

• The housing contains a diaphragm, a snap-acting SPDT switch, range adjustment knob with increments 
• An enclosure cover guards against accidental contact with the live switch terminal screws and the set point adjusting knob with indication. 
• Includes 2 pick up tubes and 2 M (6.56’) of PVC tubing

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model description usually ships price QTY
GFS-80U-NPIKG Greystone - Airflow switch w/adj setpoint knob and limit range. 0.08" - 1.20" WC range (0.04" WC Switch Diff). 1/2" NPT connections. 2-3 Days $37.40
GFS-83U-NPIKG Greystone - Airflow switch w/adj setpoint knob and limit range. 0.2" - 2.0" WC range (0.08" WC Switch Diff). 1/2" NPT connections. 2-3 Days $37.40
GFS-86U-NPIKG Greystone - Airflow switch w/adj setpoint knob and limit range. 2.0" - 10.0" WC range (0.6" WC Switch Diff). 1/2" NPT connections. 2-3 Days $37.40
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Do you have questions about the products on this page?

Click on the ? image on the left or this link to ask us your questions!
#1 Q:   Looking for an air switch to install in 8 inch kitchen range hood duct, hopfully with n.o. contacts that closee with air movement at medium and or high speed, hood is rated at 750 cfm.
A:   Most likely the lowest range (0.08 - 1.20 WC range) one is appropriate for your blower but its hard to be sure without knowing the pressures you have in the duct at medium speed.

       Asked on 2021-08-27 by dean
#2 Q:   What are the wetted materials?
A:   Diaphragm Material: Silicone, tempered at 200 C, Free of gas emissions. Pressure Connections: 2 plastic pipe connections pieces (P1 and P2), external diameter 6.0 mm.

       Asked on 2021-01-29 by Rick

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Greystone AFS Pressure Switches

General purpose airflow proving switch designed for HVAC and Energy Management applications. It may be used to sense positive, negative, or differential air pressure.

 

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