BSPP Flowmeters | McMaster-Carr

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8 Products

Any-Orientation Flowmeters

A spring piston instead of a float allows these flowmeters to measure flow rate in any mounting orientation. As liquid passes through, it pushes an indicator up the scale, showing you the flow rate. They have union fittings on both ends, making it easy to position the scale so it’s visible.

These flowmeters are calibrated with water but can be used with other liquids. If you’re using these with a liquid other than water, you’ll need to calculate the flow rate by multiplying the number shown on the scale by the specific-gravity conversion factor for your liquid.

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

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

					Temp., ° F
	Flow, gpm	End-to-End Lg.	Accuracy	Max. Pressure @ Temp.	Min.	Max.	Seal Material	Mounting Position	Features		Each
Polycarbonate Body with Polysulfone Fittings







				1/2 BSPP Female

				0.5 to 5	7 9/16"	±2%	325 psi @ 70° F	-20	200	Fluoroelastomer	Any Angle	Union Fittings	4161A231	0000000


				1 to 15	7 9/16"	±2%	325 psi @ 70° F	-20	200	Fluoroelastomer	Any Angle	Union Fittings	4161A232	000000




						3/4 BSPP Female

						0.5 to 5	7 9/16"	±2%	325 psi @ 70° F	-20	200	Fluoroelastomer	Any Angle	Union Fittings	4161A233	000000


						1 to 15	7 9/16"	±2%	325 psi @ 70° F	-20	200	Fluoroelastomer	Any Angle	Union Fittings	4161A234	000000
						3 to 30	7 9/16"	±2%	325 psi @ 70° F	-20	200	Fluoroelastomer	Any Angle	Union Fittings	4161A235	000000




								1 BSPP Female

								0.5 to 5	7 9/16"	±2%	325 psi @ 70° F	-20	200	Fluoroelastomer	Any Angle	Union Fittings	4161A236	000000


								1 to 15	7 9/16"	±2%	325 psi @ 70° F	-20	200	Fluoroelastomer	Any Angle	Union Fittings	4161A237	000000
								3 to 30	7 9/16"	±2%	325 psi @ 70° F	-20	200	Fluoroelastomer	Any Angle	Union Fittings	4161A238	000000