1 1/4 Pipe Size Flow Switches

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160 psi @ 70° F

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5 Products

Fixed-Set-Point Insertion-Mount Flow Switches

Easy to install, these flow switches come already set to a specific set point and don’t require you to disassemble your pipeline. Instead of mounting them inline, insert them into an unthreaded PVC pipe tee or pipe outlet in large-diameter pipe. They have a paddle that’s pushed as your liquid moves through to determine flow. When the paddle reaches a set position determined by the set point, it activates or deactivates equipment. All are single pole, double throw (SPDT) and can either turn one device from off to on (normally open) or on to off (normally closed). IP rated, they seal out dust and can be lightly rinsed.

They should be mounted vertically into a horizontal pipeline, so liquid pushes the paddle. Secure them with PVC cement and primer (not included).

These flow switches are calibrated with water. You can use them with other liquids, but they may not measure accurately if the liquid’s viscosity differs from water.

	For Pipe Size	Set Point, gpm	Max. Flow Rate, gpm	Max. Pressure @ Temp.	Temp. Range, ° F	Voltage	Max. Switching Current @ Voltage	Body Ht.	Enclosure Rating	Specs. Met		Each
Noryl Body with Socket-Connect PVC Fittings



	3/4	1 1 1/4	2.7, 6.8	31, 40	160 psi @ 70° F	-13 to 212	230V AC/48V DC	1 amp @ 230V AC 1 amp @ 48V DC	2 1/2"	IP65	UL 508	2766K115	0000000

Fixed-Set-Point Flow Switches

Style C

Since they come factory set to a specific set point, these switches are easier to install than adjustable flow switches. As flowing liquid pushes an internal piston, the switch reads the position of the piston to measure the flow. When the piston passes the set point, the switch actuates. They’re accurate in any mounting position.

These switches are calibrated with and measure water accurately. They can also be used with other liquids by applying your liquid’s specific-gravity conversion factor to calculate the new set point.

Choose a fitting material that is compatible with the liquid you intend to run through your line.

Straight

Style C

Bronze Fitting—Bronze and 316 stainless steel fittings resist impact better than plastic fittings.

SPDT—SPDT (single pole, double throw) switches can either turn one device from off to on (normally open) or from on to off (normally closed).

										Conduit
	Style	Pipe Size	Thread Type	Gender	Set Point, gpm	Approx. Difference Between Set Point and Reset Point, gpm	Max. Pressure @ Temp.	Temp. Range, ° F	Max. Switching Current @ Voltage	Trade Size	Thread Type	Gender	End-to-End Lg.	Mounting Position		Each
Bronze Body with Bronze Fittings







				SPDT

				C	1 1/4	NPT	Female	1	0.15	400 psi @ 70° F	-20 to 300	400 mA @ 30V AC 170 mA @ 120V AC 80 mA @ 240V AC 300 mA @ 30V DC 130 mA @ 120V DC 60 mA @ 240V DC	1/2	NPT	Male	4"	Any Angle	6486T231	0000000


				C	1 1/4	NPT	Female	4	0.6	400 psi @ 70° F	-20 to 300	400 mA @ 30V AC 170 mA @ 120V AC 80 mA @ 240V AC 300 mA @ 30V DC 130 mA @ 120V DC 60 mA @ 240V DC	1/2	NPT	Male	4"	Any Angle	6486T232	000000
				C	1 1/4	NPT	Female	20	3	400 psi @ 70° F	-20 to 300	400 mA @ 30V AC 170 mA @ 120V AC 80 mA @ 240V AC 300 mA @ 30V DC 130 mA @ 120V DC 60 mA @ 240V DC	1/2	NPT	Male	4"	Any Angle	6486T235	000000

Fixed-Set-Point Hazardous-Location Flow Switches

Safe to use where flammable gases and combustible dust may be present, these switches activate or deactivate when your flow reaches a factory-set level. All are UL listed for hazardous environments. Because their set point is fixed, they’re ready to go, making them easy to install. They actuate when your flowing liquid or gas pushes their paddle into a set position. These switches are single pole, double throw (SPDT) and can turn one device from off to on (normally open) or from on to off (normally closed). They must be mounted horizontally to function accurately.

These switches are calibrated with water and air. They can also be used with other liquids and gases but may not measure accurately if their viscosity is significantly different.

		Set Point						Conduit
	Pipe Connections	For Liquids, gpm	For Gas, scfm	Max. Pressure @ Temp.	Temp. Range, ° F	Voltage, V AC	Max. Switching Current @ Voltage	Trade Size	Thread Type	Gender	End-to-End Lg.	Enclosure Rating	Certification		Each
Brass Body with Threaded Brass Fittings



		1 1/4 NPT Female	4	21	250 psi @ 70° F	-4 to 220	120/240	5 amp @ 120V AC	3/4	NPT	Male	2 5/8"	NEMA 4	UL Listed CE Marked	47565K34	0000000