E70063 Flow Switches | McMaster-Carr

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Set Point

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For Use With

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Approximate Difference Between Set Point and Reset Point

Calibrated With

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Fluoroelastomer

Polypropylene

Titanium

Maximum Pressure @ Temperature

200 psi @ 70° F

Maximum Switching Current @ Voltage

Gender

Voltage

Connects To

Maximum Temperature

Fitting Connection

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Wire Lead Length

Number of Circuits Controlled

DFARS Specialty Metals

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11 Products

Fixed-Setpoint Flow Switches

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 orientation.

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

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

For technical drawings and 3-D models, click on a part number.

Straight

Polypropylene Plastic Body with Female Fittings

Polypropylene Plastic Body with Polypropylene Plastic Fittings
Pipe Size	Thread Type	Gender	Set Point, gpm	Approx. Difference Between Setpoint and Reset Point, gpm	Max. Pressure	Temp. Range, °F	Max. Switching Current @ Voltage	End-to-End Lg.	Mounting Orientation		Each
SPST
1/4	NPT	Female	0.1	0.1	200 psi @ 70 ° F	33° to 194°	500 mA @ 300 V AC 700 mA @ 350 V DC	4 7/8"	Any	0000000	000000
1/4	NPT	Female	0.25	0.25	200 psi @ 70 ° F	33° to 194°	500 mA @ 300 V AC 700 mA @ 350 V DC	4 7/8"	Any	0000000	00000
1/4	NPT	Female	0.5	0.5	200 psi @ 70 ° F	33° to 194°	500 mA @ 300 V AC 700 mA @ 350 V DC	4 7/8"	Any	0000000	00000
1/4	NPT	Female	0.75	0.75	200 psi @ 70 ° F	33° to 194°	500 mA @ 300 V AC 700 mA @ 350 V DC	4 7/8"	Any	0000000	00000
1/4	NPT	Female	1	1	200 psi @ 70 ° F	33° to 194°	500 mA @ 300 V AC 700 mA @ 350 V DC	4 7/8"	Any	0000000	00000

Elbow

Polypropylene Plastic Body with Polypropylene Plastic Fittings
	Pipe Size	Thread Type	Gender	Set Point, gpm	Approx. Difference Between Setpoint and Reset Point, gpm	Max. Pressure	Temp. Range, °F	Max. Switching Current @ Voltage	Mounting Orientation		Each
SPST
A	1/4	NPT	Female	0.042	0.006	200 psi @ 70 ° F	33° to 194°	500 mA @ 300 V AC 700 mA @ 350 V DC	Any	0000000	000000
A	1/4	NPT	Female	0.1	0.1	200 psi @ 70 ° F	33° to 194°	500 mA @ 300 V AC 700 mA @ 350 V DC	Any	0000000	00000
A	1/4	NPT	Female	0.25	0.25	200 psi @ 70 ° F	33° to 194°	500 mA @ 300 V AC 700 mA @ 350 V DC	Any	0000000	00000
A	1/4	NPT	Female	0.5	0.5	200 psi @ 70 ° F	33° to 194°	500 mA @ 300 V AC 700 mA @ 350 V DC	Any	0000000	00000
A	1/4	NPT	Female	0.75	0.75	200 psi @ 70 ° F	33° to 194°	500 mA @ 300 V AC 700 mA @ 350 V DC	Any	0000000	00000
A	1/4	NPT	Female	1	1	200 psi @ 70 ° F	33° to 194°	500 mA @ 300 V AC 700 mA @ 350 V DC	Any	0000000	00000