NPSM Gauges | McMaster-Carr

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	Pipe Size Pipe Size

	Thread Type Thread Type	Show

NPSM

	Thread Type Thread Type	Hide

UN/UNF (SAE Straight)

	Connection Style Connection Style


Socket Connect	Threaded

	Gender Gender

Male

Female

	Maximum Flow Maximum Flow

	For Use With For Use With

Water

	Mounting Orientation Mounting Orientation

Vertical

Horizontal

	Connection Connection

Inlet

Outlet

Sensor

	Minimum Flow Minimum Flow

	Body Material Body Material

Polypropylene Plastic

PVC Plastic

	Connection Type Connection Type

	Pipe

	Maximum Temperature Maximum Temperature

149° F

	Minimum Temperature Minimum Temperature

33° F

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	Mounting Location Mounting Location

Inline

	Maximum Pressure Maximum Pressure

180 psi @ 70° F

	Component Component

Sensor

Tee Fitting

	Humidity Points Humidity Points

	System of Measurement System of Measurement

Inch

	Width Width

1 3/8"

	Indicator Style Indicator Style

Spot

Pie

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

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14 Products

About Flowmeters and Totalizers

Flowmeters measure the rate of flow for a liquid or a gas. Totalizers measure the cumulative flow volume. Flowmeter/totalizers display both the flow rate and the cumulative flow volume.

Remote-Reading Socket-Connect Flowmeter/Totalizers for Water

With a display that can be placed up to 25 feet from the sensor, these flowmeter/totalizers are often used in hard-to-access areas. For a complete unit, order a display, a sensor, and a tee fitting.

Sensor installs in a tee fitting (sold separately). It includes 25 feet of cable with wire leads.

Tee fitting has two unthreaded female socket end connections; connect with PVC cement and primer.

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

Sensor

Polypropylene Plastic Body
Pipe Connection	End-to-End Lg.	Accuracy	Max. Pressure	Temp. Range, °F	Mounting Orientation		Each
1 1/4 NPSM	4.1"	±1%	180 psi @ 70° F	33° to 149°	Horizontal, Vertical	00000000	0000000

Replacement PVDF Plastic Rotors	0000000	Each	0000000
Replacement Titanium Rotor Pins	0000000	Each	00000

Tee Fittings

Pipe Connections
Inlet/Outlet	Sensor	Pipe Schedule	Flow Range, gpm	Max. Pressure	Temp. Range, °F	Mounting Orientation		Each
PVC Plastic Body
1/2 Socket-Connect Pipe	1 1/4 NPSM Threaded Male Pipe	80	1 to 18.9	180 psi @ 70° F	33° to 149°	Horizontal, Vertical	00000000	0000000
3/4 Socket-Connect Pipe	1 1/4 NPSM Threaded Male Pipe	80	1.7 to 33.2	180 psi @ 70° F	33° to 149°	Horizontal, Vertical	00000000	000000
1 Socket-Connect Pipe	1 1/4 NPSM Threaded Male Pipe	80	2.7 to 53.9	180 psi @ 70° F	33° to 149°	Horizontal, Vertical	00000000	000000
1 1/2 Socket-Connect Pipe	1 1/4 NPSM Threaded Male Pipe	80	6.4 to 126.9	180 psi @ 70° F	33° to 149°	Horizontal, Vertical	00000000	000000
2 Socket-Connect Pipe	1 1/4 NPSM Threaded Male Pipe	80	10.5 to 209.2	180 psi @ 70° F	33° to 149°	Horizontal, Vertical	00000000	000000
3 Socket-Connect Pipe	1 1/4 NPSM Threaded Male Pipe	80	23 to 460.8	180 psi @ 70° F	33° to 149°	Horizontal, Vertical	00000000	000000

Humidity-Indicating Plugs

Plug

40% Spot-Style Indicator

20%, 30%, 40% Pie-Style Indicator

20%, 30%, 40%, 50% Pie-Style Indicator

30%, 40%, 50%. 60% Pie-Style Indicator

20%, 30%, 40%, 50% Spot-Style Indicator

Monitor humidity in sealed containers without opening them, protecting the inside from contamination. These plugs are often used on plastic bags, storage containers, and electrical housings. Consisting of a mounting nut and two gaskets for a tight seal, these plugs install through a hole in a flexible barrier. Remove one gasket and reverse the nut to install plugs in a rigid container. Watch the indicator disc through the nut’s viewing window—it will change color as humidity rises and falls. Made of anodized aluminum, these plugs resist corrosion and are lightweight. They meet military and SAE standards for humidity indicators.

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

					Thread
Humidity Points	Accuracy	Height	Width	For Hole Diameter	Type	Pipe Size	Indicator Use	Specifications Met		Each
Anodized Aluminum
Pie-Style Indicator
20%, 30%, 40%	±5%	5/8"	1 3/8"	1.05"	NPSM	3/4	Reversible	MIL-I-8835; SAE AS26860 Type 2	0000000	000000
20%, 30%, 40%, 50%	±5%	5/8"	1 3/8"	1.05"	NPSM	3/4	Reversible	MIL-I-8835; SAE AS26860 Type 2	0000000	00000
30%, 40%, 50%, 60%	±5%	5/8"	1 3/8"	1.05"	NPSM	3/4	Reversible	MIL-I-8835; SAE AS26860 Type 2	0000000	00000
Spot-Style Indicator
20%, 30%, 40%, 50%	±5%	5/8"	1 3/8"	1.05"	NPSM	3/4	Reversible	MIL-I-8835; SAE AS26860 Type 2	0000000	00000
40%	±5%	5/8"	1 3/8"	1.05"	NPSM	3/4	Reversible	MIL-I-8835; SAE AS26860 Type 2	0000000	00000