Download Q-8DS Installation Instructions
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Component Recognized (E85349)

• Sense low flow independent of pressure or temperature.
• Turn off power or gas to heater to prevent meltdown.
• Automatic reset – ready to go as soon as flow is re-established.
• For direct control of pump motors, heaters, solenoid valves, etc.
• UL component recognized (E85349)

FLOW SWITCH MODEL Q-8DS

• SPDT, 1/2 hp, 15 AMP switching capacity @ 115 or 230 VAC standard, 25 amp, 1 HP/120 VAC: 2 HP/230 VAC on special order.
• Wide operating range – 5 to 80 GPM, Pipe Size 1 1/2″ or 2″.
• Quick, easy, horizontal, vertical or inverted installation in any plastic tee with a 1″ NPT side port.

Electrical Switch Characteristics

• SPDT UL and CSA listed
• 15 amp, 1/2 HP @ 125 or 250 VAC
• 1/2 amp @ 125 VDC, 1/4 amp @ 250 VDC
• 5 amp @ 125 VAC (Tungsten lamp load)
• 10,000,000 operations median

• FACTORY SET SWITCH POINT (1 1/2″ PIPE):Increasing flow 5-20 GPM. Decreasing flow 3-13 GPM.Consult factory for special set points
• DIFFERENTIAL PRESSURE DROP:1 1/2″ to 2″ pipe – less than 1.0 psi
• WORKING LINE PRESSURE: 50 psig max @ 180°F max
• MAXIMUM TEMPERATURE:180°F continuous
• WETTED SURFACES: Noryl, 316 and 301 stainless steel, Viton
• WEIGHT: 1/4 lb.