UL Recognized Component Flow Switches

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Fixed-Set-Point Flow Switches


Style A	Style B	Style C

Style D	Style E

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 A	Style B	Style C

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

Polypropylene Fitting—Polypropylene and PPS fittings work with a wide range of chemicals. However, they can crack from impact or when overtightened.

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).

SPST—SPST (single pole, single throw) switches turn one device from off to on (normally open).

										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
Polypropylene Body with Polypropylene Fittings







				SPST

				A	1/4	NPT	Female	0.1	0.1	200 psi @ 70° F	33 to 194	500 mA @ 300V AC 700 mA @ 350V DC	—	—	—	4 7/8"	Any Angle	2371K41	000000


				A	1/4	NPT	Female	0.25	0.25	200 psi @ 70° F	33 to 194	500 mA @ 300V AC 700 mA @ 350V DC	—	—	—	4 7/8"	Any Angle	2371K42	00000
				A	1/4	NPT	Female	0.5	0.5	200 psi @ 70° F	33 to 194	500 mA @ 300V AC 700 mA @ 350V DC	—	—	—	4 7/8"	Any Angle	2371K43	00000
				A	1/4	NPT	Female	0.75	0.75	200 psi @ 70° F	33 to 194	500 mA @ 300V AC 700 mA @ 350V DC	—	—	—	4 7/8"	Any Angle	2371K44	00000
				A	1/4	NPT	Female	1	1	200 psi @ 70° F	33 to 194	500 mA @ 300V AC 700 mA @ 350V DC	—	—	—	4 7/8"	Any Angle	2371K45	00000
				B	3/8	NPT	Male	0.25	0.05	125 psi @ 70° F	33 to 212	400 mA @ 30V AC 170 mA @ 120V AC 80 mA @ 240V AC 300 mA @ 30V DC 130 mA @ 120V DC 60 mA @ 240V DC	—	—	—	4"	Any Angle	42015K21	00000
				B	3/8	NPT	Male	0.5	0.1	125 psi @ 70° F	33 to 212	400 mA @ 30V AC 170 mA @ 120V AC 80 mA @ 240V AC 300 mA @ 30V DC 130 mA @ 120V DC 60 mA @ 240V DC	—	—	—	4"	Any Angle	42015K22	00000
				B	3/8	NPT	Male	1	0.2	125 psi @ 70° F	33 to 212	400 mA @ 30V AC 170 mA @ 120V AC 80 mA @ 240V AC 300 mA @ 30V DC 130 mA @ 120V DC 60 mA @ 240V DC	—	—	—	4"	Any Angle	42015K23	00000
				B	3/8	NPT	Male	1.5	0.3	125 psi @ 70° F	33 to 212	400 mA @ 30V AC 170 mA @ 120V AC 80 mA @ 240V AC 300 mA @ 30V DC 130 mA @ 120V DC 60 mA @ 240V DC	—	—	—	4"	Any Angle	42015K24	00000
				B	3/8	NPT	Male	2	0.4	125 psi @ 70° F	33 to 212	400 mA @ 30V AC 170 mA @ 120V AC 80 mA @ 240V AC 300 mA @ 30V DC 130 mA @ 120V DC 60 mA @ 240V DC	—	—	—	4"	Any Angle	42015K25	00000


				Bronze Body with Bronze Fittings







								SPDT

								C	1	NPT	Female	0.5	0.075	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	3 1/4"	Any Angle	6486T211	000000


								C	1	NPT	Female	1	0.15	300 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	3 3/8"	Any Angle	4553N11	000000
								C	1	NPT	Female	2	0.3	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	3 1/4"	Any Angle	6486T212	000000
								C	1	NPT	Female	3	0.45	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	3 3/8"	Any Angle	4553N12	000000
								C	1	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	3 1/4"	Any Angle	6486T213	000000
								C	1	NPT	Female	6	0.9	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	3 1/4"	Any Angle	6486T214	000000
								C	1	NPT	Female	8	1.2	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	3 1/4"	Any Angle	6486T215	000000
								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	000000
								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
								C	1 1/2	NPT	Female	1.5	0.225	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 1/2"	Any Angle	6486T241	000000


								C	1 1/2	NPT	Female	5	0.75	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 1/2"	Any Angle	6486T242	000000
								C	1 1/2	NPT	Female	30	4.5	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 1/2"	Any Angle	6486T245	000000
								C	2	NPT	Female	2	0.3	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	5 3/8"	Any Angle	6486T251	000000
								C	2	NPT	Female	5	0.75	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	5 3/8"	Any Angle	6486T252	000000
								C	2	NPT	Female	50	7.5	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	5 3/8"	Any Angle	6486T255	000000


								316 Stainless Steel Body with 316 Stainless Steel Fittings







												SPDT

C	1											NPT	Female	0.5	0.075	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	3 1/4"	Any Angle	6486T261	00000000


C	1											NPT	Female	2	0.3	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	3 1/4"	Any Angle	6486T262	00000000
C	1	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	3 1/4"	Any Angle	6486T263	00000000
C	1	NPT	Female									6	0.9	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	3 1/4"	Any Angle	6486T264	00000000
C	1	NPT	Female									8	1.2	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	3 1/4"	Any Angle	6486T265	00000000
C	2	NPT	Female									2	0.3	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	5 3/8"	Any Angle	6486T291	00000000
C	2	NPT	Female									5	0.75	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	5 3/8"	Any Angle	6486T292	00000000
C	2	NPT	Female									50	7.5	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	5 3/8"	Any Angle	6486T295	00000000

90° Elbow


Style D	Style E

Polypropylene Fitting and PPS Fitting—Polypropylene and PPS fittings work with a wide range of chemicals. However, they can crack from impact or when overtightened.

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).

SPST—SPST (single pole, single throw) switches turn one device from off to on (normally open).

	Gender	Set Point, gpm	Approx. Difference Between Set Point and Reset Point, gpm	Max. Pressure @ Temp.	Temp. Range, ° F	Max. Switching Current @ Voltage	Mounting Position		Each
Polypropylene Body with Polypropylene Fittings







	SPST

	D	1/4	NPT	Female	0.042	0.006	200 psi @ 70° F	33 to 194	500 mA @ 300V AC 700 mA @ 350V DC	Any Angle	4553N15	000000


	D	1/4	NPT	Female	0.1	0.1	200 psi @ 70° F	33 to 194	500 mA @ 300V AC 700 mA @ 350V DC	Any Angle	2371K21	00000
	D	1/4	NPT	Female	0.25	0.25	200 psi @ 70° F	33 to 194	500 mA @ 300V AC 700 mA @ 350V DC	Any Angle	2371K22	00000
	D	1/4	NPT	Female	0.5	0.5	200 psi @ 70° F	33 to 194	500 mA @ 300V AC 700 mA @ 350V DC	Any Angle	2371K23	00000
	D	1/4	NPT	Female	0.75	0.75	200 psi @ 70° F	33 to 194	500 mA @ 300V AC 700 mA @ 350V DC	Any Angle	2371K24	00000
	D	1/4	NPT	Female	1	1	200 psi @ 70° F	33 to 194	500 mA @ 300V AC 700 mA @ 350V DC	Any Angle	2371K25	00000
	E	3/4	NPT	Female	0.25	0.05	100 psi @ 70° F	0 to 212	400 mA @ 30V AC 170 mA @ 120V AC 80 mA @ 240V AC 300 mA @ 30V DC 130 mA @ 120V DC 60 mA @ 240V DC	Any Angle	4553N13	000000
	E	3/4	NPT	Female	0.5	0.1	100 psi @ 70° F	0 to 212	400 mA @ 30V AC 170 mA @ 120V AC 80 mA @ 240V AC 300 mA @ 30V DC 130 mA @ 120V DC 60 mA @ 240V DC	Any Angle	42015K6	000000
	E	3/4	NPT	Female	1	0.2	100 psi @ 70° F	0 to 212	400 mA @ 30V AC 170 mA @ 120V AC 80 mA @ 240V AC 300 mA @ 30V DC 130 mA @ 120V DC 60 mA @ 240V DC	Any Angle	4553N14	000000


	PPS Body with PPS Fittings







					SPDT

					D	1/4	NPT	Female	0.1	0.02	250 psi @ 70° F	0 to 225	400 mA @ 30V AC 170 mA @ 120V AC 80 mA @ 240V AC 300 mA @ 30V DC 130 mA @ 120V DC 60 mA @ 240V DC	Any Angle	42015K41	000000


					D	1/4	NPT	Female	0.25	0.05	250 psi @ 70° F	0 to 225	400 mA @ 30V AC 170 mA @ 120V AC 80 mA @ 240V AC 300 mA @ 30V DC 130 mA @ 120V DC 60 mA @ 240V DC	Any Angle	42015K42	000000
					D	1/4	NPT	Female	1	0.2	250 psi @ 70° F	0 to 225	400 mA @ 30V AC 170 mA @ 120V AC 80 mA @ 240V AC 300 mA @ 30V DC 130 mA @ 120V DC 60 mA @ 240V DC	Any Angle	42015K45	000000
					D	1/4	NPT	Female	1.5	0.3	250 psi @ 70° F	0 to 225	400 mA @ 30V AC 170 mA @ 120V AC 80 mA @ 240V AC 300 mA @ 30V DC 130 mA @ 120V DC 60 mA @ 240V DC	Any Angle	42015K46	000000

Fixed-Set-Point High-Pressure Flow Switches

Quicker to install than adjustable flow switches in high-pressure lines, these switches come factory-set to activate or deactivate equipment at a specific level. They compensate for the viscosity and density changes of liquid. As flowing liquid pushes an internal piston, the switch reads the piston's position to measure the flow. When the piston passes the set point, the switch actuates. All measure flow correctly no matter their mounting position.

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

Straight

SPST—SPST (single pole, single throw) switches turn one device from off to on (normally open).

	Max. Pressure @ Temp.	Temp. Range, ° F	Max. Switching Current @ Voltage	End-to-End Lg.		Each
SPST







	Brass Body with Brass Fittings

	3/8 NPT Male	0.25	0.05	1,500 psi @ 70° F	-20 to 275	0.4 amp @ 30V AC 0.17 amp @ 120V AC 0.08 amp @ 240V AC 0.3 amp @ 30V DC 0.13 amp @ 120V DC 0.06 amp @ 240V DC	3 7/16"	4960K51	0000000


	3/8 NPT Male	0.5	0.1	1,500 psi @ 70° F	-20 to 275	0.4 amp @ 30V AC 0.17 amp @ 120V AC 0.08 amp @ 240V AC 0.3 amp @ 30V DC 0.13 amp @ 120V DC 0.06 amp @ 240V DC	3 7/16"	4960K52	000000
	3/8 NPT Male	1	0.2	1,500 psi @ 70° F	-20 to 275	0.4 amp @ 30V AC 0.17 amp @ 120V AC 0.08 amp @ 240V AC 0.3 amp @ 30V DC 0.13 amp @ 120V DC 0.06 amp @ 240V DC	3 7/16"	4960K53	000000
	3/8 NPT Male	1.5	0.3	1,500 psi @ 70° F	-20 to 275	0.4 amp @ 30V AC 0.17 amp @ 120V AC 0.08 amp @ 240V AC 0.3 amp @ 30V DC 0.13 amp @ 120V DC 0.06 amp @ 240V DC	3 7/16"	4960K54	000000
	3/8 NPT Male	2	0.4	1,500 psi @ 70° F	-20 to 275	0.4 amp @ 30V AC 0.17 amp @ 120V AC 0.08 amp @ 240V AC 0.3 amp @ 30V DC 0.13 amp @ 120V DC 0.06 amp @ 240V DC	3 7/16"	4960K55	000000
	1/2 NPT Male	0.25	0.05	1,500 psi @ 70° F	-20 to 275	0.4 amp @ 30V AC 0.17 amp @ 120V AC 0.08 amp @ 240V AC 0.3 amp @ 30V DC 0.13 amp @ 120V DC 0.06 amp @ 240V DC	4"	4960K61	000000
	1/2 NPT Male	0.5	0.1	1,500 psi @ 70° F	-20 to 275	0.4 amp @ 30V AC 0.17 amp @ 120V AC 0.08 amp @ 240V AC 0.3 amp @ 30V DC 0.13 amp @ 120V DC 0.06 amp @ 240V DC	4"	4960K62	000000
	1/2 NPT Male	1	0.2	1,500 psi @ 70° F	-20 to 275	0.4 amp @ 30V AC 0.17 amp @ 120V AC 0.08 amp @ 240V AC 0.3 amp @ 30V DC 0.13 amp @ 120V DC 0.06 amp @ 240V DC	4"	4960K63	000000
	1/2 NPT Male	1.5	0.3	1,500 psi @ 70° F	-20 to 275	0.4 amp @ 30V AC 0.17 amp @ 120V AC 0.08 amp @ 240V AC 0.3 amp @ 30V DC 0.13 amp @ 120V DC 0.06 amp @ 240V DC	4"	4960K64	000000
	1/2 NPT Male	2	0.4	1,500 psi @ 70° F	-20 to 275	0.4 amp @ 30V AC 0.17 amp @ 120V AC 0.08 amp @ 240V AC 0.3 amp @ 30V DC 0.13 amp @ 120V DC 0.06 amp @ 240V DC	4"	4960K65	000000




			316 Stainless Steel Body with 316 Stainless Steel Fittings

			3/8 NPT Male	0.25	0.05	1,500 psi @ 70° F	-20 to 275	0.4 amp @ 30V AC 0.17 amp @ 120V AC 0.08 amp @ 240V AC 0.3 amp @ 30V DC 0.13 amp @ 120V DC 0.06 amp @ 240V DC	3 7/16"	4960K71	000000


			3/8 NPT Male	0.5	0.1	1,500 psi @ 70° F	-20 to 275	0.4 amp @ 30V AC 0.17 amp @ 120V AC 0.08 amp @ 240V AC 0.3 amp @ 30V DC 0.13 amp @ 120V DC 0.06 amp @ 240V DC	3 7/16"	4960K72	000000
			3/8 NPT Male	2	0.4	1,500 psi @ 70° F	-20 to 275	0.4 amp @ 30V AC 0.17 amp @ 120V AC 0.08 amp @ 240V AC 0.3 amp @ 30V DC 0.13 amp @ 120V DC 0.06 amp @ 240V DC	3 7/16"	4960K75	000000

90° Elbow

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).

			Approx. Difference Between Set Point and Reset Point					Conduit
	Pipe Connections	Set Point, gpm	For Liquids, gpm	For Gas, scfm	Max. Pressure @ Temp.	Temp. Range, ° F	Max. Switching Current @ Voltage	Trade Size	Thread Type	Gender	Port-to-Port Lg.		Each
SPDT







				Brass Body with Brass Fittings

				1/4 NPT Female	0.013	0.0195	0.03	1,000 psi @ 70° F	-20 to 225	0.4 amp @ 30V AC 0.17 amp @ 120V AC 0.08 amp @ 240V AC 0.3 amp @ 30V DC 0.13 amp @ 120V DC 0.06 amp @ 240V DC	1/2	NPT	Female	2 1/16"	4960K81	0000000


				1/4 NPT Female	0.1	0.015	0.01	1,000 psi @ 70° F	-20 to 225	0.4 amp @ 30V AC 0.17 amp @ 120V AC 0.08 amp @ 240V AC 0.3 amp @ 30V DC 0.13 amp @ 120V DC 0.06 amp @ 240V DC	1/2	NPT	Female	2 1/16"	4960K21	000000
				1/4 NPT Female	0.25	0.0375	0.01	1,000 psi @ 70° F	-20 to 225	0.4 amp @ 30V AC 0.17 amp @ 120V AC 0.08 amp @ 240V AC 0.3 amp @ 30V DC 0.13 amp @ 120V DC 0.06 amp @ 240V DC	1/2	NPT	Female	2 1/16"	4960K22	000000
				1/4 NPT Female	0.5	0.075	0.01	1,000 psi @ 70° F	-20 to 225	0.4 amp @ 30V AC 0.17 amp @ 120V AC 0.08 amp @ 240V AC 0.3 amp @ 30V DC 0.13 amp @ 120V DC 0.06 amp @ 240V DC	1/2	NPT	Female	2 1/16"	4960K23	000000
				1/4 NPT Female	0.75	0.1125	0.02	1,000 psi @ 70° F	-20 to 225	0.4 amp @ 30V AC 0.17 amp @ 120V AC 0.08 amp @ 240V AC 0.3 amp @ 30V DC 0.13 amp @ 120V DC 0.06 amp @ 240V DC	1/2	NPT	Female	2 1/16"	4960K24	000000
				1/4 NPT Female	1	0.15	0.02	1,000 psi @ 70° F	-20 to 225	0.4 amp @ 30V AC 0.17 amp @ 120V AC 0.08 amp @ 240V AC 0.3 amp @ 30V DC 0.13 amp @ 120V DC 0.06 amp @ 240V DC	1/2	NPT	Female	2 1/16"	4960K25	000000
				1/4 NPT Female	1.5	0.225	0.03	1,000 psi @ 70° F	-20 to 225	0.4 amp @ 30V AC 0.17 amp @ 120V AC 0.08 amp @ 240V AC 0.3 amp @ 30V DC 0.13 amp @ 120V DC 0.06 amp @ 240V DC	1/2	NPT	Female	2 1/16"	4960K26	000000

Insertion-Mount Flow Switches

Threaded

Connection with

NEMA 4X Rating

Avoid complicated inline installation—these flow switches insert into a tee or pipe outlet, so you don’t need to disassemble your pipeline. 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. They are single pole, double throw (SPDT) and can either turn one device from off to on (normally open) or on to off (normally closed). They should be mounted vertically into a large-diameter horizontal pipeline, so liquid pushes the paddle.

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.

Choose a fitting material that is compatible with the liquid you're running through your line.

Brass Body—Switches with a brass or 316 stainless steel body have multiple paddles you can choose between to get you closest to your set point. For a higher set point, loosen the locking washers to remove the largest paddles. You can also trim the paddles to fine-tune your set point. The more you trim, the higher the set point.

Brass Fitting—Brass and 316 stainless steel fittings resist impact better than Noryl fittings.

NEMA 4X Enclosure Rating—NEMA 4X rated switches protect against dust, weather, and washdowns.

	Paddle Material	Max. Pressure @ Temp.	Temp. Range, ° F	Max. Switching Current @ Voltage	Body Ht.	Enclosure Rating	Certification		Each
Brass Body with 1 NPT Male Threaded Brass Fittings







	Set-Point-Adjustment Removable Layered Paddles, Set-Point-Adjustment Trimmable Paddles

	1 2 4 6	4.9 to 17.6 13.7 to 56.4 35.3 to 118 60.3 to 245	27, 105, 397, 900	304 Stainless Steel	160 psi @ 70° F	33 to 225	3.7 amp @ 240V AC 7.4 amp @ 120V AC	5"	NEMA 4X	C-UL Listed UL Recognized Component	4971K5	0000000

Flow Switches with Sight

For monitoring flow at a glance, these switches have a plastic window with a rotor indicator that spins when there’s flow. They activate or deactivate equipment when the flow rate reaches your set point. Tighten or loosen the adjustment screw to choose your set point anywhere within the range. To measure flow, they count how many times the turbine turns as liquid flows through. Use them only with clean, low-viscosity liquids to prevent clogging the turbine and other damage. 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).

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

Choose a fitting material that is compatible with the liquid you're running through your line.

316 Stainless Steel Fitting and Brass Fitting—Brass and 316 stainless steel fittings resist impact better than polypropylene fittings.

Polypropylene Fitting—Polypropylene fittings work with a wide range of chemicals. However, they can crack from impact or when overtightened.

Any-Angle Mount—Flow switches with any-angle mounting position will measure accurately no matter how you orient them in your system.

	Max. Pressure @ Temp.	Temp. Range, ° F	Max. Switching Current @ Voltage	Mounting Position	End-to-End Lg.	Certification		Each
Polypropylene Body with Polypropylene Fittings







			1/4 NPT Female

			0.1 to 5	100 psi @ 70° F	33 to 180	95 mA @ 115V AC	Any Angle	3 1/16"	CE Marked UL Recognized Component	4138K11	0000000




					1/2 NPT Female

					1.5 to 20	100 psi @ 70° F	33 to 180	95 mA @ 115V AC	Any Angle	3 1/16"	CE Marked UL Recognized Component	4138K12	000000


					Brass Body with Brass Fittings







									1/4 NPT Female

									0.1 to 5	200 psi @ 70° F	33 to 212	95 mA @ 115V AC	Any Angle	3"	CE Marked UL Recognized Component	4138K13	000000




											1/2 NPT Female

											1.5 to 20	200 psi @ 70° F	33 to 212	95 mA @ 115V AC	Any Angle	3"	CE Marked UL Recognized Component	4138K14	000000




													3/4 NPT Female

													5 to 30	200 psi @ 70° F	33 to 212	95 mA @ 115V AC	Any Angle	3 15/16"	CE Marked UL Recognized Component	4138K15	000000




															1 NPT Female

															8 to 60	200 psi @ 70° F	33 to 212	95 mA @ 115V AC	Any Angle	3 15/16"	CE Marked UL Recognized Component	4138K16	000000


															316 Stainless Steel Body with 316 Stainless Steel Fittings







																			1/2 NPT Female

																			1.5 to 20	200 psi @ 70° F	33 to 212	95 mA @ 115V AC	Any Angle	3"	CE Marked UL Recognized Component	4138K18	000000




																			3/4 NPT Female

	5 to 30	200 psi @ 70° F																	33 to 212	95 mA @ 115V AC	Any Angle	3 15/16"	CE Marked UL Recognized Component	4138K19	000000




																			1 NPT Female

			8 to 60	200 psi @ 70° F															33 to 212	95 mA @ 115V AC	Any Angle	3 15/16"	CE Marked UL Recognized Component	4138K21	000000

Flow Transmitters with Sight

Send flow rate data using these transmitters while also being able to visually confirm liquid is flowing. They measure flow by counting how many times the turbine turns as the liquid moves through it. To prevent clogging the turbine and other damage, use them only with clean, low-viscosity liquids. These transmitters, also known as transducers, convert the flow measurement to an electrical signal that can be interpreted by receiving devices, such as remote displays and programmable logic controllers (PLCs), to monitor flow or control equipment. Mount them directly inline with your system. They measure accurately in any mounting orientation.

These transmitters 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.

Digital Pulse Output—Transmitters with a digital pulse output send flow data using spikes of voltage that match the input voltage of the transmitter. The higher the flow, the more pulses they send.

	End-to-End Lg.	Accuracy	Max. Pressure @ Temp.	Temp. Range, ° F	Seal Material	Input Voltage Range, V DC	Mounting Position	Field Recalibratable	Pulse Freq., Hz		Each
One Digital Pulse Output—Wire Lead Connection







	Polypropylene Body with Polypropylene Fitting

	Turbine	1/4 NPT Female	0.1 to 5	3 1/16"	±7%	100 psi @ 70° F	33 to 180	Fluoroelastomer	4.25 to 24	Any Angle	No	15 to 225	9687K11	0000000


	Turbine	1/2 NPT Female	1.5 to 20	3 1/16"	±15%	100 psi @ 70° F	33 to 180	Fluoroelastomer	4.25 to 24	Any Angle	No	15 to 225	9687K12	000000




			Brass Body with Brass Fitting

			Turbine	1/4 NPT Female	0.1 to 5	3"	±7%	200 psi @ 70° F	33 to 212	Fluoroelastomer	4.5 to 24	Any Angle	No	15 to 225	9687K21	000000


			Turbine	1/2 NPT Female	1.5 to 20	3"	±15%	200 psi @ 70° F	33 to 212	Fluoroelastomer	4.5 to 24	Any Angle	No	15 to 225	9687K22	000000
			Turbine	1 NPT Female	8 to 60	3 15/16"	±15%	200 psi @ 70° F	33 to 212	Fluoroelastomer	4.5 to 24	Any Angle	No	15 to 225	9687K24	000000




					316 Stainless Steel Body with 316 Stainless Steel Fitting

					Turbine	1/2 NPT Female	1.5 to 20	3"	±15%	200 psi @ 70° F	33 to 212	Fluoroelastomer	4.5 to 24	Any Angle	No	15 to 225	9687K32	000000


					Turbine	3/4 NPT Female	5 to 30	3 15/16"	±15%	200 psi @ 70° F	33 to 212	Fluoroelastomer	4.5 to 24	Any Angle	No	15 to 225	9687K33	000000
					Turbine	1 NPT Female	8 to 60	3 15/16"	±15%	200 psi @ 70° F	33 to 212	Fluoroelastomer	4.5 to 24	Any Angle	No	15 to 225	9687K34	000000

High-Accuracy Flow and Temperature Transmitters

Also known as magmeters, these transmitters use a magnetic field to measure flow rate and temperature with high accuracy. Because they use a magnetic field, they only work with conductive liquids, such as water. These transmitters, also known as transducers, convert measurements to an electrical signal that can be interpreted by receiving devices, such as remote displays and programmable logic controllers (PLCs) to monitor flow or control equipment. For your receiving device to interpret the signal, you will need to calibrate it for the measurement range and output signal of the transmitter. As flow or temperature increases, the output signal increases. These transmitters have one analog output for flow and another for temperature. They only give accurate readings within the rated measurement range. A digital display makes it easy to view readings and adjust settings at the source. Mount these transmitters inline with your pipe system. They measure flow correctly in any mounting orientation.

These transmitters are calibrated with water. They can only be used with liquids with a conductivity of at least 20 µS/cm.

			Flow Range
	Flow Measurement Type	Pipe Connections	Gallons per Minute, gpm	Liters per Minute, L/min	End-to-End Lg.	Accuracy	Max. Pressure @ Temp.	Temp. Range, ° F	Input Voltage Range, V DC	Mounting Position	Field Recalibratable	Enclosure Rating		Each
Two 4-20 mA Analog Transmitter Outputs—4-Pole M12 Connection Plugs







				316 Stainless Steel/Plastic/Polybutylene Body with 316 Stainless Steel Fitting

				Magnetic Induction	1/2 NPT Female	0.03 to 6.6	0.1 to 25	2 1/8"	±2%	225 psi @ 70° F	0 to 175	20 to 30	Any Angle	No	IP67	4397N101	0000000


				Magnetic Induction	3/4 NPT Female	0.02 to 13.22	0.2 to 50	2 1/8"	±2%	225 psi @ 70° F	0 to 175	20 to 30	Any Angle	No	IP67	4397N102	000000
				Magnetic Induction	1 NPT Female	0.1 to 26.4	0.2 to 100	2 1/8"	±2%	225 psi @ 70° F	0 to 175	20 to 30	Any Angle	No	IP67	4397N103	000000
				Magnetic Induction	1 1/2 NPT Female	1.3 to 79.3	5 to 300	6 11/16"	±0.8%	225 psi @ 70° F	0 to 175	20 to 30	Any Angle	No	IP65, IP67	4397N104	00000000
				Magnetic Induction	2 NPT Female	1.3 to 158.5	5 to 600	7 1/16"	±0.8%	225 psi @ 70° F	0 to 175	20 to 30	Any Angle	No	IP65, IP67	4397N105	00000000