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The performance specifications are nominal and conform to acceptable industry standards. For applications at conditions beyond these specifications, consult the local Johnson Controls office.
Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products. © 2015 Johnson Controls, Inc. www.johnsoncontrols.com
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Description
The F93 Series Air Volume Controls for Deep Wells control the amount
of air in the residential water storage tanks of deep well water systems.
Deep wells are more than 25 ft (7.6 m) deep.
F93 Series Controls automatically maintain air volume in the storage
tanks of deep well water systems by allowing air to escape from the
tank and into the surrounding room when the water level in the tank
drops (increase of air volume).
F93 deep well controls open the air valve on a fall in tank water level to
bleed excess air from the tank at pressures up to 100 psig (690 kPa).
The F93H has a minimum pressure release valve to avoid lowering tank
pressure below 25 psig (172 kPa). Use this model on applications
where water may be rapidly drained.
Refer to the F93 Series Air Volume Controls for Deep Wells Product
Bulletin (Part No. 24-7664-3000) for important product application
information.
Features
• sturdy Noryl (high performance thermoplastic) body resists
mechanical damage and corrosion.
• brass internal operating parts minimize corrosion.
• pressure tested plastic float provides long operating life.
• optional pressure gauge tapping allows mounting of a pressure
gauge.
• certification for Federal Safe Drinking Water Act (SDWA) meets the
US Federal standards of the Reduction of Lead in Drinking Water
Act.
Application
Water storage tanks in residential water systems rely on a volume of air
in the tank to provide system pressure, making it important to control
the amount of air in the tank:
• Too little air in the tank results in rapid pump cycling - a problem
common in shallow well systems (less than 7.6 m [25 ft] deep).
• Too much air in the tank results in air entering the distribution
system — a problem common in deep well systems
(more than 7.6 m [25 ft] deep).
Repair Information
If the F93 Series Air Volume Controls for Deep Wells fails to operate
within its specifications, replace the unit. For a replacement F93 Series
control, contact the nearest Johnson Controls® representative.
Selection Chart
Technical Specifications
Product Code
Number
Description
F93A-1C Air Volume Control for Deep Wells, opens on pressure drop, no gage tap, no pressure release valve
F93B-1C Air Volume Control for Deep Wells, opens on pressure drop, 1/4-18 PTF SAE short gage tap, no pressure release valve
F93H-1C Air Volume Control for Deep Wells, opens on pressure drop, 1/4-18 PTF SAE short gage tap, with
25 psig (172 kPa) minimum air pressure release valve. Use this model in applications where water may be rapidly drawn from the system.
F93 Series Air Volume Control for Deep Wells
Body Material 30% glass-filled Noryl thermoplastic
Float Material Plastic with brass rod
Maximum Tank Pressure 100 psig (690 kPa)
Shipping Weight Individual: 0.25 lb (0.11 kg)
Bulk pack (30): 30.9 lb (4.08 kg)
Tank Connector Size 1-1/4 in. external NPT
Compliance United States Federal Safe Drinking Water Act (SDWA) Compliant,
Underwriters Laboratories Classified in Accordance with NSF/ANSI 372 (File MH59894)
F93 Series Air Volume Controls for Deep Wells
Liquid Level and Flow Controls
Code No. LIT-1922355
F93 Series Air Volume Control for Deep Wells