Chemical Indicators | McMaster-Carr

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	Pipe Size Pipe Size

1/2

3/4

1 1/2

	Thread Type Thread Type

NPT

	For Use With For Use With	Show

Chemicals

	For Use With For Use With	Hide

Warning: Products have one, but not necessarily all, of the selected characteristics.

	Body Material Body Material

Stainless Steel

Plastic

	Connection Style Connection Style

Threaded

Quick Clamp

	Display Type Display Type

	Digital

	Flow Measurement Scale Flow Measurement Scale

Gallons per Minute

Liters per Minute

	Maximum Pressure Maximum Pressure

	System of Measurement System of Measurement

Inch

	For Tube OD For Tube OD

3/4"

1 1/2"

2 1/2"

	Maximum Temperature Maximum Temperature

140° F

250° F

500° F

	Environment Environment

	Window Material Window Material

Glass

Plastic

	Minimum Temperature Minimum Temperature

	Connection Type Connection Type


Pipe	Tube

	Mounting Orientation Mounting Orientation

Vertical

Horizontal

Any Position

	End-to-End Length End-to-End Length

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

RoHS Compliant

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

DFARS Specialty Metals
COTS-Exempt

	Direction of Flow Direction of Flow

	Gender Gender

Female

Male

	Maximum Flow Maximum Flow

	Mounting Location Mounting Location

Inline

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

REACH Compliant

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56 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.

Sight Shown Assembled With
Gasket, Quick-Clamp Fitting, And
Tube Fitting (All Sold Separately)

Glass Window with 2205 Stainless Steel Ring

Monitor food, brewery, chemical, pharmaceutical, and biotech processing lines with these sights that attach to quick-clamp fittings for fast installation and easy removal for cleaning. All have a one-piece design, so there are no crevices where bacteria can grow. A quick-clamp fitting, gasket, and tube fitting are required (sold separately).

For superior strength and reliability, choose 2205 stainless steel sights. All have a glass window that’s melted around a high-strength ring, so they won’t shatter, leak, or lose their shape under high pressure, heat, chemicals, or impact. They withstand harsh cleaners and sanitizers for clean-in-place (CIP) and steam-in-place (SIP) applications. USP Class VI and TUV Rheinland Certified, these sights meet safety standards in the U.S. and Europe. They also meet DIN standards for glass materials used in sights, ASTM standards for materials used in boilers and pressure vessels, and ASME BPE design standards for bioprocessing equipment that ensure purity and safety.

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

				Temp. Range, °F
For Tube OD	For Flange OD	Window Dia.	Max. Pressure	Min.	Max.	For Use With	Features	Specifications Met		Each
2205 Stainless Steel Ring with Glass Window
1", 1 1/2"	1.98"	1"	230 psi @ 70° F	-40°	500°	Water, Hydraulic Fluid, Diesel Fuel, Acetic Acid, Air, Alcohol-Based Solvents, Beverage, Chemicals, Compressed Air, Food, Fuel Oil, Gasoline, Inert Gas, Ketone, Oil, Salt Water, Steam	One-Piece Construction	ASME BPE, ASTM A479, DIN 7079, DIN 7080, TUV Rheinland Certified, USP Class VI	0000000	0000000
2"	2.52"	1 3/16"	230 psi @ 70° F	-40°	500°	Water, Hydraulic Fluid, Diesel Fuel, Acetic Acid, Air, Alcohol-Based Solvents, Beverage, Chemicals, Compressed Air, Food, Fuel Oil, Gasoline, Inert Gas, Ketone, Oil, Salt Water, Steam	One-Piece Construction	ASME BPE, ASTM A479, DIN 7079, DIN 7080, TUV Rheinland Certified, USP Class VI	0000000	000000
3"	3.58"	1 1/2"	150 psi @ 70° F	-40°	500°	Water, Hydraulic Fluid, Diesel Fuel, Acetic Acid, Air, Alcohol-Based Solvents, Beverage, Chemicals, Compressed Air, Food, Fuel Oil, Gasoline, Inert Gas, Ketone, Oil, Salt Water, Steam	One-Piece Construction	ASME BPE, ASTM A479, DIN 7079, DIN 7080, TUV Rheinland Certified, USP Class VI	0000000	000000
4"	4.68"	2 3/16"	150 psi @ 70° F	-40°	500°	Water, Hydraulic Fluid, Diesel Fuel, Acetic Acid, Air, Alcohol-Based Solvents, Beverage, Chemicals, Compressed Air, Food, Fuel Oil, Gasoline, Inert Gas, Ketone, Oil, Salt Water, Steam	One-Piece Construction	ASME BPE, ASTM A479, DIN 7079, DIN 7080, TUV Rheinland Certified, USP Class VI	0000000	000000

Compact Flow Sights for Chemicals

About half the height of other flow sights for chemicals, these fit in areas with limited clearance. They provide an unobstructed view of liquid color, clarity, and movement through the tubular window. For excellent chemical resistance, they have a 316 stainless steel body and an FEP window.

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

				Window
Pipe Size	Thread Type	Gender	Temp. Range, °F	Dia.	Lg.	End-to-End Lg.	Ht.	Max. Pressure	Direction of Flow		Each
316 Stainless Steel Body
1/2	NPT	Male	-100° to 250°	5/8"	4"	9"	1"	150 psi @ 70° F	Any Direction	0000000	0000000
1/2	NPT	Male	-100° to 250°	5/8"	6"	11"	1"	150 psi @ 70° F	Any Direction	0000000	000000
1/2	NPT	Male	-100° to 250°	5/8"	12"	17"	1"	150 psi @ 70° F	Any Direction	0000000	000000
1/2	NPT	Male	-100° to 250°	5/8"	24"	29"	1"	150 psi @ 70° F	Any Direction	0000000	000000
1	NPT	Male	-100° to 250°	1 1/4"	4"	10 1/4"	1 9/16"	150 psi @ 70° F	Any Direction	0000000	000000
1	NPT	Male	-100° to 250°	1 1/4"	6"	12 1/4"	1 9/16"	150 psi @ 70° F	Any Direction	0000000	000000
1	NPT	Male	-100° to 250°	1 1/4"	12"	18 1/4"	1 9/16"	150 psi @ 70° F	Any Direction	0000000	000000
1	NPT	Male	-100° to 250°	1 1/4"	24"	30 1/4"	1 9/16"	150 psi @ 70° F	Any Direction	0000000	000000

Flow Sights for Chemicals

To withstand corrosive chemical solutions, these sights have a PVC body, a fluoroelastomer seal, and an acrylic window. The large tubular window provides an unobstructed view of your process media for checking movement, clarity, and color from multiple angles.

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

PVC Plastic Body
Pipe Size	Thread Type	Gender	Temp. Range, °F	Window Lg.	End-to-End Lg.	Ht.	Max. Pressure	Direction of Flow		Each
1/2	NPT	Female	40° to 140°	2 1/4"	4 3/4"	2 1/2"	110 psi @ 70° F	Any Direction	0000000	0000000
3/4	NPT	Female	40° to 140°	2 1/4"	4 3/4"	2 1/2"	110 psi @ 70° F	Any Direction	0000000	000000
1	NPT	Female	40° to 140°	2 1/4"	5 1/4"	3"	110 psi @ 70° F	Any Direction	0000000	000000
1 1/2	NPT	Female	40° to 140°	2 1/2"	5 7/8"	3 1/2"	110 psi @ 70° F	Any Direction	0000000	000000
2	NPT	Female	40° to 140°	3 1/8"	7 3/8"	4"	110 psi @ 70° F	Any Direction	0000000	000000

Flowmeter/Totalizers for Water and Chemicals

To withstand water and a variety of caustic chemicals, these flowmeter/totalizers have a corrosion-resistant 316 stainless steel body. They measure both flow rate and total flow volume. The batch total volume can be reset after each metering application. The total flow volume cannot be reset. They have an enclosure that meets NEMA 4 for protection from dirt and washdowns.

Flowmeter/totalizers with threaded connections have 316 stainless steel seals, which resist corrosion.

Connect flowmeter/totalizers with quick-clamp connections to other quick-clamp fittings (often called tri-clamp fittings) using a gasket and clamp. They’re easy to attach and remove for cleaning.

Certificate of calibration traceable to NIST states that the flowmeter/totalizer has passed a test for accuracy.

Optional output module transmits output signals to an external device such as a data recorder, logger, or remote display (not included). It includes 10 feet of cable with wire leads.

Optional remote panel-mounting kit lets you mount the meter’s display up to 100 feet away. It includes a sensor module and 10 feet of cable with wire leads.

Hazardous location environmental ratings indicate where manufacturers have included safety features in products to facilitate their safe use in hazardous environments. Before selecting a product for a hazardous location, ensure it is rated for your environment. See About Hazardous Location Environmental Ratings.

With Threaded Pipe Connections

Flowmeter/Totalizers								Replacement Displays		Replacement Rotor Kits
Pipe Connections	End-to-End Lg.	Flow Range, gpm	Accuracy	Max. Total Volume, units	Max. Pressure		Each		Each		Each
Flowmeter/Totalizers
316 Stainless Steel Body and Seal—14° to 140° F
Gallons per Minute, Liters per Minute
1/2 NPT Female	4 1/4"	1 to 10	±1.5%	999,999	1500 psi @ 70° F	00000000	0000000	00000000	0000000	00000000	0000000
3/4 NPT Female	4 3/8"	2 to 20	±1%	999,999	1500 psi @ 70° F	00000000	000000	00000000	000000	00000000	000000
1 NPT Female	4 1/2"	5 to 50	±1%	999,999	1500 psi @ 70° F	00000000	000000	00000000	000000	00000000	000000
1 1/2 NPT Female	5 3/8"	10 to 100	±0.75%	999,999	1500 psi @ 70° F	00000000	00000000	00000000	000000	00000000	000000
2 NPT Female	6 3/8"	20 to 200	±0.75%	999,999	1500 psi @ 70° F	00000000	00000000	00000000	000000	00000000	000000
Flowmeter/Totalizers with Certificate of Calibration Traceable to NIST
316 Stainless Steel Body and Seal—14° to 140° F
Gallons per Minute, Liters per Minute
1/2 NPT Female	4 1/4"	1 to 10	±1.5%	999,999	1500 psi @ 70° F	00000000	00000000	00000000	000000	00000000	000000
3/4 NPT Female	4 3/8"	2 to 20	±1%	999,999	1500 psi @ 70° F	00000000	00000000	00000000	000000	00000000	000000
1 NPT Female	4 1/2"	5 to 50	±1%	999,999	1500 psi @ 70° F	00000000	00000000	00000000	000000	00000000	000000
1 1/2 NPT Female	5 3/8"	10 to 100	±0.75%	999,999	1500 psi @ 70° F	00000000	00000000	00000000	000000	00000000	000000
2 NPT Female	6 3/8"	20 to 200	±0.75%	999,999	1500 psi @ 70° F	00000000	00000000	00000000	000000	00000000	000000

With Quick-Clamp Tube Connections

Flowmeter/Totalizers
Quick-Clamp Tube Connections											Replacement Displays
Type	Gender	For Tube OD	Flange OD	End-to-End Lg.	Flow Range, gpm	Accuracy	Max. Total Volume, units	Max. Pressure		Each		Each
Flowmeter/Totalizers
316 Stainless Steel Body and Seal—14° to 140° F
Gallons per Minute, Liters per Minute
Standard	Female	3/4"	0.984"	5"	1 to 10	±1.5%	999,999	1500 psi @ 70° F	0000000	000000000	00000000	0000000
Standard	Female	1"	1.984"	5"	2 to 20	±1%	999,999	1500 psi @ 70° F	0000000	00000000	00000000	000000
Standard	Female	1 1/2"	1.984"	5 1/2"	5 to 50	±1%	999,999	1500 psi @ 70° F	0000000	00000000	00000000	000000
Standard	Female	2"	2.515"	6 1/2"	10 to 100	±0.75%	999,999	1500 psi @ 70° F	0000000	00000000	00000000	000000
Standard	Female	2 1/2"	3.047"	7"	20 to 200	±0.75%	999,999	1500 psi @ 70° F	0000000	00000000	00000000	000000
Flowmeter/Totalizers with Certificate of Calibration Traceable to NIST
316 Stainless Steel Body and Seal—14° to 140° F
Gallons per Minute, Liters per Minute
Standard	Female	3/4"	0.984"	5"	1 to 10	±1.5%	999,999	1500 psi @ 70° F	0000000	00000000	00000000	000000
Standard	Female	1"	1.984"	5"	2 to 20	±1%	999,999	1500 psi @ 70° F	0000000	00000000	00000000	000000
Standard	Female	1 1/2"	1.984"	5 1/2"	5 to 50	±1%	999,999	1500 psi @ 70° F	0000000	00000000	00000000	000000
Standard	Female	2"	2.515"	6 1/2"	10 to 100	±0.75%	999,999	1500 psi @ 70° F	0000000	00000000	00000000	000000
Standard	Female	2 1/2"	3.047"	7"	20 to 200	±0.75%	999,999	1500 psi @ 70° F	0000000	00000000	00000000	000000

Accessories

			Pkg.
Component	Pkg. Qty.		Each
4-20 mA Output Module	__	00000000	0000000
Pulse Output Module	__	00000000	000000
Remote Panel-Mounting Kit	__	00000000	000000
Disposable Batteries	4	00000000	0000

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About Flowmeters and Totalizers

Sights for Quick-Clamp Sanitary Tube Fittings

Compact Flow Sights for Chemicals

Flow Sights for Chemicals

Flowmeter/Totalizers for Water and Chemicals