Aquastat is designed to thermostatically turn any B&G NBF circulator ON and OFF. The AQ-1/2 or AQ-3/4 will switch the pump OFF at 120°F (48.9°C) and ON at 100°F (37.8°C). The aquastats are available in separate models that will sense the temperature for either 1/2” or 3/4” copper pipe.
AUTOMATIC TIMER KIT and AQUASTAT COMBINATION – The automatic timer and aquastat kits can be used in combination. When they are used together, the pump will only circulate water when the ON time conditions are met and when water temperature is low enough to cause the aquastat to switch ON.
Features and Benefits
Thermostatic Switch Modes: OFF (open) at 120°F (48.9°C) water temperature and ON (closed) at 100°F (37.8°C) water temperature.
Thermostatic Element: Bimetal, senses surface temperature of outside diameter of pipe.
Pipe Size: AQS-1/2 clips onto 1/2″ copper pipe or 3/8″ steel pipe (OD of pipe 5/8″). AQS-3/4 clips onto 3/4″ copper pipe or 1/2″ steel pipe (OD of pipe 7/8″).
Mounting: May be installed to sense temperature at the suction or discharge pipe of the pump.
Thermostat Covering: Epoxy (Environmentally Sealed)
Pipe Clip: Stainless Steel
Sensing Element: Bimetal
Wire Leads: Insulated 18″ (457mm) #18 AWG
Connects to the lead wires in the connection box of any Bell & Gossett NBF/NRF/SSF circulator.
Suitable for 115/120V, 60 HZ operation.
Provides thermostat control to the circulator. It will turn OFF (open) at 120°F (48.9°C) water temperature and ON (closed) at 100°F (37.8°C) water temperature.
We are pleased to introduce Xylem Online for selection and sizing of Bell & Gossett products.
Xylem Online includes the following products:
To access Xylem Online simply:
Now you’re ready to log in Xylem online and begin working with the tool.
Recommended Browsers: IE10 or Google Chrome:
General Selection Tools:
Heat Exchanger Product Selection
Steam + Water Pressure Reducing Values
Report Bugs/Request Enhancements
Please email the following address to report issues and request enhancements: firstname.lastname@example.org
Consult your local Bell & Gossett Representative for additional assistance.
Bell & Gossett is a leading manufacturer of pumps, valves, heat exchangers, and accessories for plumbing, wastewater, and HVAC—including steam and heat transfer—applications. To build and operate an efficient water system, you need both the right products and experts who know the application. Here, you can access Bell & Gossett’s trusted network of partners who have the experience you need to get the job done right.