Precision Orifice Valves

	Body Material Body Material

	For Use With For Use With

	Pipe Size Pipe Size

	Thread Type Thread Type

NPT

UNF

UNC

	Connection Style Connection Style


Threaded	Compression

Barbed	Push to Connect

	Connection Type Connection Type


Pipe	Press In

Tube

	Orifice Diameter Orifice Diameter

	Maximum Pressure Maximum Pressure

	Length Length

	Gender Gender

Male

Female

	Orifice Type Orifice Type

	Water Flow Water Flow

	Maximum Temperature Maximum Temperature

	Minimum Temperature Minimum Temperature

	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

RoHS Compliant with
Exemptions

	Hex Width Hex Width

	Air Flow Air Flow

	Plug Head Style Plug Head Style


Hex Socket	Hex Head

	Thread Size Thread Size

	For Tube OD For Tube OD

	Color Color

	Gray		White
	Black		Blue
	Aqua		Purple
	Yellow

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

REACH Compliant

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83 Products

How to Measure Fittings

Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.

NPT Male × NPT Female

NPT Male × NPT Male

Plug with Hex Socket × NPT Male

Plug with Hex Socket × UNF Male

Plug with Hex Head × NPT Male

UNF Male × UNF Female

Plug with Hex Socket × UNC Male

Connect these orifices to threaded pipe, or insert them into threaded holes. Also known as flow restrictors and precision orifice valves, they are used to throttle, vent, bleed, or regulate the flow of liquids and gases.

Stainless steel orifices are more corrosion resistant than brass orifices.

316 stainless steel orifices have better corrosion resistance than 303 stainless steel orifices.

Plastic orifices are color coded by orifice diameter for easy identification.

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

Brass Body — NPT Male × NPT Female

For Use With: Air, Argon, Carbon Dioxide, Helium, Neon, Nitrogen, Oil, Water, Xenon
Max. Pressure: 2,000 psi @ 70° F
Temperature Range: 35° to 200° F

Available Orifice Diameters
Orifice Dia.	Water Flow	Air Flow
0.01"	0.016 gpm @ 40 psi	0.1 scfm @ 40 psi
0.016"	0.035 gpm @ 40 psi	0.2 scfm @ 40 psi
0.018"	0.046 gpm @ 40 psi	0.2 scfm @ 40 psi
0.02"	0.056 gpm @ 40 psi	0.3 scfm @ 40 psi
0.021"	0.061 gpm @ 40 psi	0.3 scfm @ 40 psi
0.023"	0.076 gpm @ 40 psi	0.4 scfm @ 40 psi
0.024"	0.082 gpm @ 40 psi	0.4 scfm @ 40 psi
0.025"	0.089 gpm @ 40 psi	0.5 scfm @ 40 psi
0.026"	0.101 gpm @ 40 psi	0.5 scfm @ 40 psi
0.028"	0.114 gpm @ 40 psi	0.6 scfm @ 40 psi
0.029"	0.12 gpm @ 40 psi	0.6 scfm @ 40 psi
0.032"	0.152 gpm @ 40 psi	0.7 scfm @ 40 psi
0.033"	0.158 gpm @ 40 psi	0.8 scfm @ 40 psi
0.035"	0.177 gpm @ 40 psi	0.9 scfm @ 40 psi
0.038"	0.202 gpm @ 40 psi	1.1 scfm @ 40 psi
0.04"	0.228 gpm @ 40 psi	1.2 scfm @ 40 psi
0.042"	0.247 gpm @ 40 psi	1.3 scfm @ 40 psi
0.047"	0.304 gpm @ 40 psi	1.6 scfm @ 40 psi
0.052"	0.373 gpm @ 40 psi	2 scfm @ 40 psi
0.055"	0.43 gpm @ 40 psi	2.2 scfm @ 40 psi
0.063"	0.557 gpm @ 40 psi	2.8 scfm @ 40 psi
1/8"	2.34 gpm @ 40 psi	11.9 scfm @ 40 psi

Pipe Size	Lg.		Each
1/8	7/8"	0000000	000000
1/4	1 1/4"	0000000	00000
3/8	1 1/2"	0000000	00000
1/2	1 11/16"	0000000	00000

Brass Body — NPT Male × NPT Male

For Use With: Air, Argon, Carbon Dioxide, Helium, Neon, Nitrogen, Oil, Water, Xenon
Max. Pressure: 2,000 psi @ 70° F
Temperature Range: 35° to 200° F

Available Orifice Diameters
Orifice Dia.	Water Flow	Air Flow
0.01"	0.016 gpm @ 40 psi	0.1 scfm @ 40 psi
0.016"	0.035 gpm @ 40 psi	0.2 scfm @ 40 psi
0.018"	0.046 gpm @ 40 psi	0.2 scfm @ 40 psi
0.02"	0.056 gpm @ 40 psi	0.3 scfm @ 40 psi
0.021"	0.061 gpm @ 40 psi	0.3 scfm @ 40 psi
0.023"	0.076 gpm @ 40 psi	0.4 scfm @ 40 psi
0.024"	0.082 gpm @ 40 psi	0.4 scfm @ 40 psi
0.025"	0.089 gpm @ 40 psi	0.5 scfm @ 40 psi
0.026"	0.101 gpm @ 40 psi	0.5 scfm @ 40 psi
0.028"	0.114 gpm @ 40 psi	0.6 scfm @ 40 psi
0.029"	0.12 gpm @ 40 psi	0.6 scfm @ 40 psi
0.032"	0.152 gpm @ 40 psi	0.7 scfm @ 40 psi
0.033"	0.158 gpm @ 40 psi	0.8 scfm @ 40 psi
0.035"	0.177 gpm @ 40 psi	0.9 scfm @ 40 psi
0.038"	0.202 gpm @ 40 psi	1.1 scfm @ 40 psi
0.04"	0.228 gpm @ 40 psi	1.2 scfm @ 40 psi
0.042"	0.247 gpm @ 40 psi	1.3 scfm @ 40 psi
0.047"	0.304 gpm @ 40 psi	1.6 scfm @ 40 psi
0.052"	0.373 gpm @ 40 psi	2 scfm @ 40 psi
0.055"	0.43 gpm @ 40 psi	2.2 scfm @ 40 psi
0.063"	0.557 gpm @ 40 psi	2.8 scfm @ 40 psi
1/8"	2.34 gpm @ 40 psi	11.9 scfm @ 40 psi

Pipe Size	Lg.		Each
1/8	1"	0000000	000000
1/4	1 3/8"	0000000	00000
3/8	1 1/2"	0000000	00000

Brass Body — Plug with Hex Socket × NPT Male

For Use With: Air, Argon, Carbon Dioxide, Helium, Neon, Nitrogen, Oil, Water, Xenon
Max. Pressure: 2,000 psi @ 70° F
Temperature Range: 35° to 200° F

Available Orifice Diameters
Orifice Dia.	Water Flow	Air Flow
0.01"	0.016 gpm @ 40 psi	0.1 scfm @ 40 psi
0.016"	0.035 gpm @ 40 psi	0.2 scfm @ 40 psi
0.018"	0.046 gpm @ 40 psi	0.2 scfm @ 40 psi
0.02"	0.056 gpm @ 40 psi	0.3 scfm @ 40 psi
0.021"	0.061 gpm @ 40 psi	0.3 scfm @ 40 psi
0.023"	0.076 gpm @ 40 psi	0.4 scfm @ 40 psi
0.024"	0.082 gpm @ 40 psi	0.4 scfm @ 40 psi
0.025"	0.089 gpm @ 40 psi	0.5 scfm @ 40 psi
0.026"	0.101 gpm @ 40 psi	0.5 scfm @ 40 psi
0.028"	0.114 gpm @ 40 psi	0.6 scfm @ 40 psi
0.029"	0.12 gpm @ 40 psi	0.6 scfm @ 40 psi
0.032"	0.152 gpm @ 40 psi	0.7 scfm @ 40 psi
0.033"	0.158 gpm @ 40 psi	0.8 scfm @ 40 psi
0.035"	0.177 gpm @ 40 psi	0.9 scfm @ 40 psi
0.038"	0.202 gpm @ 40 psi	1.1 scfm @ 40 psi
0.04"	0.228 gpm @ 40 psi	1.2 scfm @ 40 psi
0.042"	0.247 gpm @ 40 psi	1.3 scfm @ 40 psi
0.047"	0.304 gpm @ 40 psi	1.6 scfm @ 40 psi
0.052"	0.373 gpm @ 40 psi	2 scfm @ 40 psi
0.055"	0.43 gpm @ 40 psi	2.2 scfm @ 40 psi
0.063"	0.557 gpm @ 40 psi	2.8 scfm @ 40 psi
1/8"	2.34 gpm @ 40 psi	11.9 scfm @ 40 psi

Pipe Size	Lg.		Each
1/8	5/16"	0000000	000000
1/4	1/2"	0000000	00000

Brass Body — Plug with Hex Socket × UNF Male

For Use With: Air, Argon, Carbon Dioxide, Helium, Neon, Nitrogen, Oil, Water, Xenon
Max. Pressure: 2,000 psi @ 70° F
Temperature Range: 35° to 200° F

Available Orifice Diameters
Orifice Dia.	Water Flow	Air Flow
0.01"	0.016 gpm @ 40 psi	0.1 scfm @ 40 psi
0.016"	0.035 gpm @ 40 psi	0.2 scfm @ 40 psi
0.018"	0.046 gpm @ 40 psi	0.2 scfm @ 40 psi
0.02"	0.056 gpm @ 40 psi	0.3 scfm @ 40 psi
0.021"	0.061 gpm @ 40 psi	0.3 scfm @ 40 psi
0.023"	0.076 gpm @ 40 psi	0.4 scfm @ 40 psi
0.024"	0.082 gpm @ 40 psi	0.4 scfm @ 40 psi
0.025"	0.089 gpm @ 40 psi	0.5 scfm @ 40 psi
0.026"	0.101 gpm @ 40 psi	0.5 scfm @ 40 psi
0.028"	0.114 gpm @ 40 psi	0.6 scfm @ 40 psi
0.029"	0.12 gpm @ 40 psi	0.6 scfm @ 40 psi
0.032"	0.152 gpm @ 40 psi	0.7 scfm @ 40 psi
0.033"	0.158 gpm @ 40 psi	0.8 scfm @ 40 psi
0.035"	0.177 gpm @ 40 psi	0.9 scfm @ 40 psi
0.038"	0.202 gpm @ 40 psi	1.1 scfm @ 40 psi
0.04"	0.228 gpm @ 40 psi	1.2 scfm @ 40 psi
0.042"	0.247 gpm @ 40 psi	1.3 scfm @ 40 psi
0.047"	0.304 gpm @ 40 psi	1.6 scfm @ 40 psi
0.052"	0.373 gpm @ 40 psi	2 scfm @ 40 psi
0.055"	0.43 gpm @ 40 psi	2.2 scfm @ 40 psi
0.063"	0.557 gpm @ 40 psi	2.8 scfm @ 40 psi

Thread Size	Lg.		Each
10-32	3/16"	00000000	000000
10-32	1/4"	00000000	00000

Brass Body — Plug with Hex Head × NPT Male

For Use With: Air, Argon, Carbon Dioxide, Helium, Neon, Nitrogen, Oil, Water, Xenon
Max. Pressure: 2,000 psi @ 70° F
Temperature Range: 35° to 200° F

Available Orifice Diameters
Orifice Dia.	Water Flow	Air Flow
0.01"	0.016 gpm @ 40 psi	0.1 scfm @ 40 psi
0.016"	0.035 gpm @ 40 psi	0.2 scfm @ 40 psi
0.018"	0.046 gpm @ 40 psi	0.2 scfm @ 40 psi
0.02"	0.056 gpm @ 40 psi	0.3 scfm @ 40 psi
0.021"	0.061 gpm @ 40 psi	0.3 scfm @ 40 psi
0.023"	0.076 gpm @ 40 psi	0.4 scfm @ 40 psi
0.024"	0.082 gpm @ 40 psi	0.4 scfm @ 40 psi
0.025"	0.089 gpm @ 40 psi	0.5 scfm @ 40 psi
0.026"	0.101 gpm @ 40 psi	0.5 scfm @ 40 psi
0.028"	0.114 gpm @ 40 psi	0.6 scfm @ 40 psi
0.029"	0.12 gpm @ 40 psi	0.6 scfm @ 40 psi
0.032"	0.152 gpm @ 40 psi	0.7 scfm @ 40 psi
0.033"	0.158 gpm @ 40 psi	0.8 scfm @ 40 psi
0.035"	0.177 gpm @ 40 psi	0.9 scfm @ 40 psi
0.038"	0.202 gpm @ 40 psi	1.1 scfm @ 40 psi
0.04"	0.228 gpm @ 40 psi	1.2 scfm @ 40 psi
0.042"	0.247 gpm @ 40 psi	1.3 scfm @ 40 psi
0.047"	0.304 gpm @ 40 psi	1.6 scfm @ 40 psi
0.052"	0.373 gpm @ 40 psi	2 scfm @ 40 psi
0.055"	0.43 gpm @ 40 psi	2.2 scfm @ 40 psi
0.063"	0.557 gpm @ 40 psi	2.8 scfm @ 40 psi
1/8"	2.34 gpm @ 40 psi	11.9 scfm @ 40 psi

Pipe Size	Lg.		Each
1/8	5/8"	0000000	000000
1/4	13/16"	0000000	00000

303 Stainless Steel Body — NPT Male × NPT Female

For Use With: Air, Argon, Carbon Dioxide, Helium, Neon, Nitrogen, Oil, Water, Xenon
Max. Pressure: 4,000 psi @ 70° F
Temperature Range: 35° to 200° F

Available Orifice Diameters
Orifice Dia.	Water Flow	Air Flow
0.01"	0.016 gpm @ 40 psi	0.1 scfm @ 40 psi
0.016"	0.035 gpm @ 40 psi	0.2 scfm @ 40 psi
0.018"	0.046 gpm @ 40 psi	0.2 scfm @ 40 psi
0.02"	0.056 gpm @ 40 psi	0.3 scfm @ 40 psi
0.021"	0.061 gpm @ 40 psi	0.3 scfm @ 40 psi
0.023"	0.076 gpm @ 40 psi	0.4 scfm @ 40 psi
0.024"	0.082 gpm @ 40 psi	0.4 scfm @ 40 psi
0.025"	0.089 gpm @ 40 psi	0.5 scfm @ 40 psi
0.026"	0.101 gpm @ 40 psi	0.5 scfm @ 40 psi
0.028"	0.114 gpm @ 40 psi	0.6 scfm @ 40 psi
0.029"	0.12 gpm @ 40 psi	0.6 scfm @ 40 psi
0.032"	0.152 gpm @ 40 psi	0.7 scfm @ 40 psi
0.033"	0.158 gpm @ 40 psi	0.8 scfm @ 40 psi
0.035"	0.177 gpm @ 40 psi	0.9 scfm @ 40 psi
0.038"	0.202 gpm @ 40 psi	1.1 scfm @ 40 psi
0.04"	0.228 gpm @ 40 psi	1.2 scfm @ 40 psi
0.042"	0.247 gpm @ 40 psi	1.3 scfm @ 40 psi
0.047"	0.304 gpm @ 40 psi	1.6 scfm @ 40 psi
0.052"	0.373 gpm @ 40 psi	2 scfm @ 40 psi
0.055"	0.43 gpm @ 40 psi	2.2 scfm @ 40 psi
0.063"	0.557 gpm @ 40 psi	2.8 scfm @ 40 psi
1/8"	2.34 gpm @ 40 psi	11.9 scfm @ 40 psi

Pipe Size	Lg.		Each
1/8	7/8"	0000000	000000
1/4	1 1/4"	0000000	00000
3/8	1 1/2"	0000000	00000
1/2	1 11/16"	0000000	00000

303 Stainless Steel Body — NPT Male × NPT Male

For Use With: Air, Argon, Carbon Dioxide, Helium, Neon, Nitrogen, Oil, Water, Xenon
Max. Pressure: 4,000 psi @ 70° F
Temperature Range: 35° to 200° F

Available Orifice Diameters
Orifice Dia.	Water Flow	Air Flow
0.01"	0.016 gpm @ 40 psi	0.1 scfm @ 40 psi
0.016"	0.035 gpm @ 40 psi	0.2 scfm @ 40 psi
0.018"	0.046 gpm @ 40 psi	0.2 scfm @ 40 psi
0.02"	0.056 gpm @ 40 psi	0.3 scfm @ 40 psi
0.021"	0.061 gpm @ 40 psi	0.3 scfm @ 40 psi
0.023"	0.076 gpm @ 40 psi	0.4 scfm @ 40 psi
0.024"	0.082 gpm @ 40 psi	0.4 scfm @ 40 psi
0.025"	0.089 gpm @ 40 psi	0.5 scfm @ 40 psi
0.026"	0.101 gpm @ 40 psi	0.5 scfm @ 40 psi
0.028"	0.114 gpm @ 40 psi	0.6 scfm @ 40 psi
0.029"	0.12 gpm @ 40 psi	0.6 scfm @ 40 psi
0.032"	0.152 gpm @ 40 psi	0.7 scfm @ 40 psi
0.033"	0.158 gpm @ 40 psi	0.8 scfm @ 40 psi
0.035"	0.177 gpm @ 40 psi	0.9 scfm @ 40 psi
0.038"	0.202 gpm @ 40 psi	1.1 scfm @ 40 psi
0.04"	0.228 gpm @ 40 psi	1.2 scfm @ 40 psi
0.042"	0.247 gpm @ 40 psi	1.3 scfm @ 40 psi
0.047"	0.304 gpm @ 40 psi	1.6 scfm @ 40 psi
0.052"	0.373 gpm @ 40 psi	2 scfm @ 40 psi
0.055"	0.43 gpm @ 40 psi	2.2 scfm @ 40 psi
0.063"	0.557 gpm @ 40 psi	2.8 scfm @ 40 psi
1/8"	2.34 gpm @ 40 psi	11.9 scfm @ 40 psi

Pipe Size	Lg.		Each
1/8	1"	0000000	000000
1/4	1 3/8"	0000000	00000
3/8	1 1/2"	0000000	00000

303 Stainless Steel Body — UNF Male × UNF Female

For Use With: Air, Argon, Carbon Dioxide, Helium, Neon, Nitrogen, Oil, Water, Xenon
Max. Pressure: 100 psi @ 70° F
Temperature Range: Not Rated

Available Orifice Diameters
Orifice Dia.	Water Flow	Air Flow
0.01"	0.016 gpm @ 40 psi	0.1 scfm @ 40 psi
0.016"	0.035 gpm @ 40 psi	0.2 scfm @ 40 psi
0.018"	0.046 gpm @ 40 psi	0.2 scfm @ 40 psi
0.02"	0.056 gpm @ 40 psi	0.3 scfm @ 40 psi
0.021"	0.061 gpm @ 40 psi	0.3 scfm @ 40 psi
0.023"	0.076 gpm @ 40 psi	0.4 scfm @ 40 psi
0.024"	0.082 gpm @ 40 psi	0.4 scfm @ 40 psi
0.025"	0.089 gpm @ 40 psi	0.5 scfm @ 40 psi
0.026"	0.101 gpm @ 40 psi	0.5 scfm @ 40 psi
0.028"	0.114 gpm @ 40 psi	0.6 scfm @ 40 psi
0.029"	0.12 gpm @ 40 psi	0.6 scfm @ 40 psi
0.032"	0.152 gpm @ 40 psi	0.7 scfm @ 40 psi
0.033"	0.158 gpm @ 40 psi	0.8 scfm @ 40 psi
0.035"	0.177 gpm @ 40 psi	0.9 scfm @ 40 psi
0.038"	0.202 gpm @ 40 psi	1.1 scfm @ 40 psi
0.04"	0.228 gpm @ 40 psi	1.2 scfm @ 40 psi
0.042"	0.247 gpm @ 40 psi	1.3 scfm @ 40 psi
0.047"	0.304 gpm @ 40 psi	1.6 scfm @ 40 psi
0.052"	0.373 gpm @ 40 psi	2 scfm @ 40 psi
0.055"	0.43 gpm @ 40 psi	2.2 scfm @ 40 psi
0.063"	0.557 gpm @ 40 psi	2.8 scfm @ 40 psi

Thread Size	Lg.		Each
10-32	7/16"	0000000	000000

303 Stainless Steel Body — Plug with Hex Socket × NPT Male

For Use With: Air, Argon, Carbon Dioxide, Helium, Neon, Nitrogen, Oil, Water, Xenon
Max. Pressure: 4,000 psi @ 70° F
Temperature Range: 35° to 200° F

Available Orifice Diameters
Orifice Dia.	Water Flow	Air Flow
0.01"	0.016 gpm @ 40 psi	0.1 scfm @ 40 psi
0.016"	0.035 gpm @ 40 psi	0.2 scfm @ 40 psi
0.018"	0.046 gpm @ 40 psi	0.2 scfm @ 40 psi
0.02"	0.056 gpm @ 40 psi	0.3 scfm @ 40 psi
0.021"	0.061 gpm @ 40 psi	0.3 scfm @ 40 psi
0.023"	0.076 gpm @ 40 psi	0.4 scfm @ 40 psi
0.024"	0.082 gpm @ 40 psi	0.4 scfm @ 40 psi
0.025"	0.089 gpm @ 40 psi	0.5 scfm @ 40 psi
0.026"	0.101 gpm @ 40 psi	0.5 scfm @ 40 psi
0.028"	0.114 gpm @ 40 psi	0.6 scfm @ 40 psi
0.029"	0.12 gpm @ 40 psi	0.6 scfm @ 40 psi
0.032"	0.152 gpm @ 40 psi	0.7 scfm @ 40 psi
0.033"	0.158 gpm @ 40 psi	0.8 scfm @ 40 psi
0.035"	0.177 gpm @ 40 psi	0.9 scfm @ 40 psi
0.038"	0.202 gpm @ 40 psi	1.1 scfm @ 40 psi
0.04"	0.228 gpm @ 40 psi	1.2 scfm @ 40 psi
0.042"	0.247 gpm @ 40 psi	1.3 scfm @ 40 psi
0.047"	0.304 gpm @ 40 psi	1.6 scfm @ 40 psi
0.052"	0.373 gpm @ 40 psi	2 scfm @ 40 psi
0.055"	0.43 gpm @ 40 psi	2.2 scfm @ 40 psi
0.063"	0.557 gpm @ 40 psi	2.8 scfm @ 40 psi
1/8"	2.34 gpm @ 40 psi	11.9 scfm @ 40 psi

Pipe Size	Lg.		Each
1/8	5/16"	0000000	000000
1/4	1/2"	0000000	00000

303 Stainless Steel Body — Plug with Hex Head × NPT Male

For Use With: Air, Argon, Carbon Dioxide, Helium, Neon, Nitrogen, Oil, Water, Xenon
Max. Pressure: 4,000 psi @ 70° F
Temperature Range: 35° to 200° F

Available Orifice Diameters
Orifice Dia.	Water Flow	Air Flow
0.01"	0.016 gpm @ 40 psi	0.1 scfm @ 40 psi
0.016"	0.035 gpm @ 40 psi	0.2 scfm @ 40 psi
0.018"	0.046 gpm @ 40 psi	0.2 scfm @ 40 psi
0.02"	0.056 gpm @ 40 psi	0.3 scfm @ 40 psi
0.021"	0.061 gpm @ 40 psi	0.3 scfm @ 40 psi
0.023"	0.076 gpm @ 40 psi	0.4 scfm @ 40 psi
0.024"	0.082 gpm @ 40 psi	0.4 scfm @ 40 psi
0.025"	0.089 gpm @ 40 psi	0.5 scfm @ 40 psi
0.026"	0.101 gpm @ 40 psi	0.5 scfm @ 40 psi
0.028"	0.114 gpm @ 40 psi	0.6 scfm @ 40 psi
0.029"	0.12 gpm @ 40 psi	0.6 scfm @ 40 psi
0.032"	0.152 gpm @ 40 psi	0.7 scfm @ 40 psi
0.033"	0.158 gpm @ 40 psi	0.8 scfm @ 40 psi
0.035"	0.177 gpm @ 40 psi	0.9 scfm @ 40 psi
0.038"	0.202 gpm @ 40 psi	1.1 scfm @ 40 psi
0.04"	0.228 gpm @ 40 psi	1.2 scfm @ 40 psi
0.042"	0.247 gpm @ 40 psi	1.3 scfm @ 40 psi
0.047"	0.304 gpm @ 40 psi	1.6 scfm @ 40 psi
0.052"	0.373 gpm @ 40 psi	2 scfm @ 40 psi
0.055"	0.43 gpm @ 40 psi	2.2 scfm @ 40 psi
0.063"	0.557 gpm @ 40 psi	2.8 scfm @ 40 psi
1/8"	2.34 gpm @ 40 psi	11.9 scfm @ 40 psi

Pipe Size	Lg.		Each
1/8	9/16"	0000000	000000
1/4	13/16"	0000000	00000

316 Stainless Steel Body — Plug with Hex Socket × UNF Male

For Use With: Air, Argon, Carbon Dioxide, Helium, Neon, Nitrogen, Oil, Water, Xenon
Max. Pressure: 4,000 psi @ 70° F
Temperature Range: 35° to 200° F

Available Orifice Diameters
Orifice Dia.	Water Flow	Air Flow
0.01"	0.016 gpm @ 40 psi	0.1 scfm @ 40 psi
0.016"	0.035 gpm @ 40 psi	0.2 scfm @ 40 psi
0.018"	0.046 gpm @ 40 psi	0.2 scfm @ 40 psi
0.02"	0.056 gpm @ 40 psi	0.3 scfm @ 40 psi
0.021"	0.061 gpm @ 40 psi	0.3 scfm @ 40 psi
0.023"	0.076 gpm @ 40 psi	0.4 scfm @ 40 psi
0.024"	0.082 gpm @ 40 psi	0.4 scfm @ 40 psi
0.025"	0.089 gpm @ 40 psi	0.5 scfm @ 40 psi
0.026"	0.101 gpm @ 40 psi	0.5 scfm @ 40 psi
0.028"	0.114 gpm @ 40 psi	0.6 scfm @ 40 psi
0.029"	0.12 gpm @ 40 psi	0.6 scfm @ 40 psi
0.032"	0.152 gpm @ 40 psi	0.7 scfm @ 40 psi
0.033"	0.158 gpm @ 40 psi	0.8 scfm @ 40 psi
0.035"	0.177 gpm @ 40 psi	0.9 scfm @ 40 psi
0.038"	0.202 gpm @ 40 psi	1.1 scfm @ 40 psi
0.04"	0.228 gpm @ 40 psi	1.2 scfm @ 40 psi
0.042"	0.247 gpm @ 40 psi	1.3 scfm @ 40 psi
0.047"	0.304 gpm @ 40 psi	1.6 scfm @ 40 psi
0.052"	0.373 gpm @ 40 psi	2 scfm @ 40 psi
0.055"	0.43 gpm @ 40 psi	2.2 scfm @ 40 psi
0.063"	0.557 gpm @ 40 psi	2.8 scfm @ 40 psi

Thread Size	Lg.		Each
10-32	3/16"	00000000	000000
10-32	1/4"	00000000	00000
10-32	3/8"	00000000	00000

316 Stainless Steel Body — Plug with Hex Socket × UNC Male

For Use With: Air, Argon, Carbon Dioxide, Helium, Neon, Nitrogen, Oil, Water, Xenon
Max. Pressure: 4,000 psi @ 70° F
Temperature Range: 35° to 200° F

Available Orifice Diameters
Orifice Dia.	Water Flow	Air Flow
0.01"	0.016 gpm @ 40 psi	0.1 scfm @ 40 psi
0.016"	0.035 gpm @ 40 psi	0.2 scfm @ 40 psi
0.018"	0.046 gpm @ 40 psi	0.2 scfm @ 40 psi
0.02"	0.056 gpm @ 40 psi	0.3 scfm @ 40 psi
0.021"	0.061 gpm @ 40 psi	0.3 scfm @ 40 psi
0.023"	0.076 gpm @ 40 psi	0.4 scfm @ 40 psi
0.024"	0.082 gpm @ 40 psi	0.4 scfm @ 40 psi
0.025"	0.089 gpm @ 40 psi	0.5 scfm @ 40 psi
0.026"	0.101 gpm @ 40 psi	0.5 scfm @ 40 psi
0.028"	0.114 gpm @ 40 psi	0.6 scfm @ 40 psi
0.029"	0.12 gpm @ 40 psi	0.6 scfm @ 40 psi
0.032"	0.152 gpm @ 40 psi	0.7 scfm @ 40 psi
0.033"	0.158 gpm @ 40 psi	0.8 scfm @ 40 psi
0.035"	0.177 gpm @ 40 psi	0.9 scfm @ 40 psi
0.038"	0.202 gpm @ 40 psi	1.1 scfm @ 40 psi
0.04"	0.228 gpm @ 40 psi	1.2 scfm @ 40 psi
0.042"	0.247 gpm @ 40 psi	1.3 scfm @ 40 psi
0.047"	0.304 gpm @ 40 psi	1.6 scfm @ 40 psi
0.052"	0.373 gpm @ 40 psi	2 scfm @ 40 psi
0.055"	0.43 gpm @ 40 psi	2.2 scfm @ 40 psi
0.063"	0.557 gpm @ 40 psi	2.8 scfm @ 40 psi

Thread Size	Lg.		Each
1/4"-20	1/4"	00000000	000000
1/4"-20	3/8"	00000000	00000
1/4"-20	1/2"	00000000	00000

Nylon Plastic Body — Plug with Hex Head × NPT Male

For Use With: Air, Water
Max. Pressure: 100 psi @ 75° F
Temperature Range: 40° to 120° F

Available Orifice Diameters
Orifice Dia.	Water Flow	Air Flow
0.004"	0.002 gpm @ 40 psi	0 scfm @ 40 psi
0.007"	0.008 gpm @ 40 psi	0 scfm @ 40 psi
0.01"	0.016 gpm @ 40 psi	0.1 scfm @ 40 psi
0.02"	0.056 gpm @ 40 psi	0.3 scfm @ 40 psi

Orifice Dia.	Color	Pipe Size	Lg.		Each
0.004"	Purple	1/8	5/8"	0000000	000000
0.007"	Aqua	1/8	5/8"	0000000	00000
0.01"	Yellow	1/8	5/8"	0000000	00000
0.02"	Blue	1/8	5/8"	0000000	00000

Press-In Flow-Control Orifices

For Use With: Air, Argon, Carbon Dioxide, Helium, Neon, Nitrogen, Oil, Water, Xenon
Max. Pressure: 4,000 psi @ 70° F

Press these orifices into machined holes in connectors, manifolds, and other custom parts. They’re also known as flow restrictors and precision orifice valves. Use them to throttle, vent, bleed, or regulate the flow of water, oil, and inert gas.

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

Available Orifice Diameters
Orifice Dia.	Water Flow	Air Flow
0.01"	0.016 gpm @ 40 psi	4.7 scfh @ 40 psi
0.018"	0.046 gpm @ 40 psi	13.2 scfh @ 40 psi
0.021"	0.061 gpm @ 40 psi	17.8 scfh @ 40 psi
0.025"	0.089 gpm @ 40 psi	27.5 scfh @ 40 psi
0.029"	0.12 gpm @ 40 psi	37.1 scfh @ 40 psi
0.035"	0.177 gpm @ 40 psi	52.5 scfh @ 40 psi
0.042"	0.247 gpm @ 40 psi	76.9 scfh @ 40 psi
0.055"	0.43 gpm @ 40 psi	132 scfh @ 40 psi

303 Stainless Steel Body
Lg.	OD	For Hole Dia.		Each
1/8"	1/4"	0.257"	0000000	000000

Compression Flow-Control Orifices

NPT Male × Compression

Compression × Compression

For Use With: Air, Argon, Carbon Dioxide, Helium, Neon, Nitrogen, Oil, Water, Xenon
Max. Pressure: 4,000 psi @ 70° F

Compression fittings bite down on the outside of hard metal tubing for a secure connection. Also known as flow restrictors and precision orifice valves, these orifices are used to throttle, vent, bleed, or regulate the flow of liquids and gases.

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

Available Orifice Diameters
Orifice Dia.	Water Flow	Air Flow
0.01"	0.016 gpm @ 40 psi	0.1 scfm @ 40 psi
0.018"	0.046 gpm @ 40 psi	0.2 scfm @ 40 psi
0.021"	0.061 gpm @ 40 psi	0.3 scfm @ 40 psi
0.025"	0.089 gpm @ 40 psi	0.5 scfm @ 40 psi
0.029"	0.12 gpm @ 40 psi	0.6 scfm @ 40 psi
0.035"	0.177 gpm @ 40 psi	0.9 scfm @ 40 psi
0.042"	0.247 gpm @ 40 psi	1.3 scfm @ 40 psi
0.055"	0.43 gpm @ 40 psi	2.2 scfm @ 40 psi

		Connection
Pipe Size	Thread Size	For Tube OD	Lg.		Each
316 Stainless Steel Body
NPT Male × Compression
1/4	7/16"-20	1/4"	1 1/2"	0000000	000000
3/8	9/16"-20	1/4"	1 1/2"	0000000	00000
Compression × Compression
__	__	3/16"	1 1/2"	0000000	00000
__	__	1/4"	1 5/8"	0000000	00000

Barbed Flow-Control Orifices

NPT Male × Barbed

Barbed × Barbed

Insert the barbed ends of these orifices into rubber and soft plastic tubing, and secure them with a clamp. Also known as flow restrictors and precision orifice valves, they are used to throttle, vent, bleed, or regulate the flow of liquids and gases.

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

Nylon Plastic Body

For Use With: Air, Water
Max. Pressure: 125 psi @ 70° F
Temperature Range: -40° to 200° F

Available Orifice Diameters
Orifice Dia.	Water Flow	Air Flow
0.01"	0.016 gpm @ 40 psi	0.1 scfm @ 40 psi
0.016"	0.035 gpm @ 40 psi	0.2 scfm @ 40 psi
0.018"	0.046 gpm @ 40 psi	0.2 scfm @ 40 psi
0.02"	0.056 gpm @ 40 psi	0.3 scfm @ 40 psi
0.021"	0.061 gpm @ 40 psi	0.3 scfm @ 40 psi
0.023"	0.076 gpm @ 40 psi	0.4 scfm @ 40 psi
0.024"	0.082 gpm @ 40 psi	0.4 scfm @ 40 psi
0.025"	0.089 gpm @ 40 psi	0.5 scfm @ 40 psi
0.026"	0.101 gpm @ 40 psi	0.5 scfm @ 40 psi
0.028"	0.114 gpm @ 40 psi	0.6 scfm @ 40 psi
0.029"	0.12 gpm @ 40 psi	0.6 scfm @ 40 psi
0.032"	0.152 gpm @ 40 psi	0.7 scfm @ 40 psi
0.033"	0.158 gpm @ 40 psi	0.8 scfm @ 40 psi
0.035"	0.177 gpm @ 40 psi	0.9 scfm @ 40 psi
0.038"	0.202 gpm @ 40 psi	1.1 scfm @ 40 psi
0.04"	0.228 gpm @ 40 psi	1.2 scfm @ 40 psi
0.042"	0.247 gpm @ 40 psi	1.3 scfm @ 40 psi
0.047"	0.304 gpm @ 40 psi	1.6 scfm @ 40 psi
0.052"	0.373 gpm @ 40 psi	2 scfm @ 40 psi
0.055"	0.43 gpm @ 40 psi	2.2 scfm @ 40 psi
0.063"	0.557 gpm @ 40 psi	2.8 scfm @ 40 psi
0.125"	2.34 gpm @ 40 psi	11.9 scfm @ 40 psi

NPT Male × Barbed
Pipe Size	For Tube ID	Lg.		Each
1/8	1/8"	1 1/16"	0000000	00000
1/4	3/16"	1 1/4"	0000000	00000
1/4	1/4"	1 3/8"	0000000	00000

303 Stainless Steel Body

For Use With: Air, Argon, Coolant, Diesel Fuel, Gasoline, Mineral Oils, Natural Gas, Oil, Oxygen, Steam, Water
Max. Pressure: 500 psi @ 70° F
Temperature Range: Not Rated to 500° F

Available Orifice Diameters
Orifice Dia.	Water Flow	Air Flow
0.01"	0.016 gpm @ 40 psi	0.3 scfm @ 40 psi
0.016"	0.035 gpm @ 40 psi	0.5 scfm @ 40 psi
0.018"	0.046 gpm @ 40 psi	0.6 scfm @ 40 psi
0.02"	0.056 gpm @ 40 psi	0.6 scfm @ 40 psi
0.021"	0.061 gpm @ 40 psi	0.7 scfm @ 40 psi
0.023"	0.076 gpm @ 40 psi	0.7 scfm @ 40 psi
0.024"	0.082 gpm @ 40 psi	0.7 scfm @ 40 psi
0.025"	0.089 gpm @ 40 psi	0.8 scfm @ 40 psi
0.026"	0.101 gpm @ 40 psi	0.8 scfm @ 40 psi
0.028"	0.114 gpm @ 40 psi	0.9 scfm @ 40 psi
0.029"	0.12 gpm @ 40 psi	0.9 scfm @ 40 psi
0.032"	0.152 gpm @ 40 psi	1.1 scfm @ 40 psi
0.033"	0.158 gpm @ 40 psi	1.1 scfm @ 40 psi
0.035"	0.177 gpm @ 40 psi	1.2 scfm @ 40 psi
0.038"	0.202 gpm @ 40 psi	1.2 scfm @ 40 psi
0.04"	0.228 gpm @ 40 psi	1.3 scfm @ 40 psi
0.042"	0.247 gpm @ 40 psi	1.4 scfm @ 40 psi
0.047"	0.304 gpm @ 40 psi	1.5 scfm @ 40 psi
0.052"	0.373 gpm @ 40 psi	1.6 scfm @ 40 psi
0.055"	0.43 gpm @ 40 psi	1.7 scfm @ 40 psi
0.063"	0.557 gpm @ 40 psi	2 scfm @ 40 psi
0.125"	2.34 gpm @ 40 psi	4 scfm @ 40 psi

Barbed × Barbed
For Tube ID	Lg.		Each
1/4"	1 5/16"	0000000	000000

Flange-Mount Flow-Control Orifices

For Use With: Air, Argon, Carbon Dioxide, Helium, Neon, Nitrogen, Oil, Water, Xenon
Max. Pressure: 740 psi @ 100° F
Temperature Range: -20° to 950° F

Also known as orifice plates, these mount between orifice flange unions. They are used to throttle, vent, bleed, or regulate the flow of liquids and gases.

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

		For Orifice Flange								Handle
For Flange Pipe Size	For Pipe Schedule	ANSI Class	Surface	Orifice Dia.	Water Flow	Air Flow	Lg.	Thick.	OD	Ht.	Wd.		Each
304 Stainless Steel Body
1/2	40	300	Raised	0.311"	3.51 gpm @ 40 psi	25.2 scfm @ 40 psi	7 1/8"	1/8"	2 1/8"	5"	1"	0000000	0000000
3/4	40	300	Raised	0.412"	6.13 gpm @ 40 psi	44 scfm @ 40 psi	7 5/8"	1/8"	2 5/8"	5"	1"	0000000	000000
1	40	300	Raised	0.525"	9.9 gpm @ 40 psi	71.2 scfm @ 40 psi	7 7/8"	1/8"	2 7/8"	5"	1"	0000000	000000
1 1/2	40	300	Raised	0.805"	23.2 gpm @ 40 psi	167 scfm @ 40 psi	8 3/4"	1/8"	3 3/4"	5"	1"	0000000	000000
2	40	300	Raised	1.034"	38.11 gpm @ 40 psi	274.7 scfm @ 40 psi	9 3/8"	1/8"	4 3/8"	5"	1"	0000000	000000
2 1/2	40	300	Raised	1.235"	54.24 gpm @ 40 psi	391.1 scfm @ 40 psi	10 1/8"	1/8"	5 1/8"	5"	1"	0000000	000000
3	40	300	Raised	1.534"	83.56 gpm @ 40 psi	602.8 scfm @ 40 psi	10 7/8"	1/8"	5 7/8"	5"	1"	0000000	000000
4	40	300	Raised	2.013"	143.75 gpm @ 40 psi	1,037.5 scfm @ 40 psi	12 1/8"	1/8"	7 1/8"	5"	1"	0000000	000000
6	40	300	Raised	3.033"	325.79 gpm @ 40 psi	2,353 scfm @ 40 psi	14 7/8"	1/8"	9 7/8"	5"	1"	0000000	000000

Pressure-Compensating Threaded Flow-Control Orifices

NPT Male × NPT Male

NPT Female × NPT Female

NPT Female × NPT Male

For Use With: Water
Max. Pressure: 120 psi @ 140° F
Temperature Range: 40° to 140° F

When inlet pressure changes, these orifices automatically adjust to deliver a consistent outlet flow. They connect to threaded pipe, or fit into threaded holes. Also known as flow restrictors and precision orifice valves, they are commonly used to regulate the flow of water during treatment.

Buna-N Rubber Body
Pipe Size	Lg.	Choose a Water Flow		Each
NPT Male × NPT Male
1/2	2"	0.4 gpm @120 psi, 0.6 gpm @ 120 psi, 0.7 gpm @ 120 psi, 1 gpm @ 120 psi, 1.4 gpm @ 120 psi, 1.8 gpm @ 120 psi, 2 gpm @ 120 psi, 2.5 gpm @ 120 psi, 3.5 gpm @ 120 psi	0000000	000000
3/4	2"	0.4 gpm @120 psi, 0.6 gpm @ 120 psi, 1 gpm @ 120 psi, 1.4 gpm @ 120 psi, 1.8 gpm @ 120 psi, 2.5 gpm @ 120 psi, 3.5 gpm @ 120 psi, 5 gpm @ 120 psi	00000000	00000
NPT Female × NPT Female
3/4	2"	0.7 gpm @ 120 psi, 1 gpm @ 120 psi, 1.4 gpm @ 120 psi, 1.8 gpm @ 120 psi, 2 gpm @ 120 psi, 2.5 gpm @ 120 psi, 3.5 gpm @ 120 psi, 5 gpm @ 120 psi	0000000	00000
1	2"	5 gpm @ 120 psi	0000000	00000
NPT Female × NPT Male
1	2 1/2"	0.4 gpm @120 psi, 0.6 gpm @ 120 psi, 0.7 gpm @ 120 psi, 1 gpm @ 120 psi, 1.4 gpm @ 120 psi, 2 gpm @ 120 psi, 2.5 gpm @ 120 psi, 3 gpm @ 120 psi, 3.5 gpm @ 120 psi, 5 gpm @ 120 psi	0000000	00000

Push-to-Connect Flow-Control Orifices

NPT Male × Push to Connect

Push to Connect × Push to Connect

Push tubing into these orifices, and an internal ring holds them in place. They're for use with plastic and soft metal tubing. Also known as flow restrictors and precision orifice valves, they are used to throttle, vent, bleed, or regulate the flow of liquids and gases.

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

Acetal Plastic Body

For Use With: Air, Water
Max. Pressure: Not Rated

Available Orifice Diameters
Orifice Dia.	Water Flow	Air Flow
0.01"	0.016 gpm @ 40 psi	0.1 scfm @ 40 psi
0.016"	0.035 gpm @ 40 psi	0.2 scfm @ 40 psi
0.018"	0.046 gpm @ 40 psi	0.2 scfm @ 40 psi
0.02"	0.056 gpm @ 40 psi	0.3 scfm @ 40 psi
0.021"	0.061 gpm @ 40 psi	0.3 scfm @ 40 psi
0.023"	0.076 gpm @ 40 psi	0.4 scfm @ 40 psi
0.024"	0.082 gpm @ 40 psi	0.4 scfm @ 40 psi
0.025"	0.089 gpm @ 40 psi	0.5 scfm @ 40 psi
0.026"	0.101 gpm @ 40 psi	0.5 scfm @ 40 psi
0.028"	0.114 gpm @ 40 psi	0.6 scfm @ 40 psi
0.029"	0.12 gpm @ 40 psi	0.6 scfm @ 40 psi
0.032"	0.152 gpm @ 40 psi	0.7 scfm @ 40 psi
0.033"	0.158 gpm @ 40 psi	0.8 scfm @ 40 psi
0.035"	0.177 gpm @ 40 psi	0.9 scfm @ 40 psi
0.038"	0.202 gpm @ 40 psi	1.1 scfm @ 40 psi
0.04"	0.228 gpm @ 40 psi	1.2 scfm @ 40 psi
0.042"	0.247 gpm @ 40 psi	1.3 scfm @ 40 psi
0.047"	0.304 gpm @ 40 psi	1.6 scfm @ 40 psi
0.052"	0.373 gpm @ 40 psi	2 scfm @ 40 psi
0.055"	0.43 gpm @ 40 psi	2.2 scfm @ 40 psi
0.063"	0.557 gpm @ 40 psi	2.8 scfm @ 40 psi
1/8"	2.34 gpm @ 40 psi	11.9 scfm @ 40 psi

NPT Male × Push to Connect
Pipe Size	For Tube OD	Lg.		Each
1/8	1/4"	1 1/16"	0000000	000000
1/4	1/4"	1 1/8"	0000000	00000

Push to Connect × Push to Connect
For Tube OD	Lg.		Each
1/4"	1 3/8"	0000000	000000
3/8"	1 5/8"	0000000	00000
1/2"	2"	0000000	00000

Brass Body

For Use With: Air, Oil, Water
Max. Pressure: Not Rated

Available Orifice Diameters
Orifice Dia.	Water Flow	Air Flow
0.01"	0.016 gpm @ 40 psi	0.1 scfm @ 40 psi
0.016"	0.035 gpm @ 40 psi	0.2 scfm @ 40 psi
0.018"	0.046 gpm @ 40 psi	0.2 scfm @ 40 psi
0.02"	0.056 gpm @ 40 psi	0.3 scfm @ 40 psi
0.021"	0.061 gpm @ 40 psi	0.3 scfm @ 40 psi
0.023"	0.076 gpm @ 40 psi	0.4 scfm @ 40 psi
0.024"	0.082 gpm @ 40 psi	0.4 scfm @ 40 psi
0.025"	0.089 gpm @ 40 psi	0.5 scfm @ 40 psi
0.026"	0.101 gpm @ 40 psi	0.5 scfm @ 40 psi
0.028"	0.114 gpm @ 40 psi	0.6 scfm @ 40 psi
0.029"	0.12 gpm @ 40 psi	0.6 scfm @ 40 psi
0.032"	0.152 gpm @ 40 psi	0.7 scfm @ 40 psi
0.033"	0.158 gpm @ 40 psi	0.8 scfm @ 40 psi
0.035"	0.177 gpm @ 40 psi	0.9 scfm @ 40 psi
0.038"	0.202 gpm @ 40 psi	1.1 scfm @ 40 psi
0.04"	0.228 gpm @ 40 psi	1.2 scfm @ 40 psi
0.042"	0.247 gpm @ 40 psi	1.3 scfm @ 40 psi
0.047"	0.304 gpm @ 40 psi	1.6 scfm @ 40 psi
0.052"	0.373 gpm @ 40 psi	2 scfm @ 40 psi
0.055"	0.43 gpm @ 40 psi	2.2 scfm @ 40 psi
0.063"	0.557 gpm @ 40 psi	2.8 scfm @ 40 psi

NPT Male × Push to Connect
Pipe Size	For Tube OD	Lg.		Each
1/4	1/4"	15/16"	0000000	000000

Flow-Control Orifices for Water

NPT Male × NPT Male

Max. Pressure: 200 psi @ 180° F
Temperature Range: 33° to 180° F

Also known as flow restrictors and precision orifice valves, these orifices are used to throttle, vent, bleed, or regulate flow in water systems. They automatically adjust to changing inlet pressure to maintain consistent outlet flow.

Nickel-plated brass orifices are more corrosion resistant than orifices with a plain brass body.

316 stainless steel orifices have the best corrosion resistance.

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

Nickel-Plated Brass Body
Pipe Size	Lg.	Choose an Outlet Water Flow, gpm		Each
NPT Female × NPT Female
3/8	1 3/4"	0.13, 0.19, 0.25, 0.35, 0.5, 0.75, 1	0000000	000000
1/2	1 15/16"	1, 1.5, 2, 2.5, 3, 3.5, 4, 5, 6	0000000	00000
3/4	2 1/4"	1, 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10	0000000	00000
1	2 3/4"	1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 25, 30	0000000	00000
316 Stainless Steel Body
NPT Female × NPT Female
3/8	1 3/4"	0.13, 0.19, 0.25, 0.35, 0.5, 0.75, 1	0000000	000000
1/2	1 15/16"	1, 1.5, 2, 2.5, 3, 3.5, 4, 5, 6	0000000	000000
3/4	2 1/4"	1, 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10	0000000	000000
1	2 3/4"	1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 25, 30	0000000	000000

Flow-Control Orifices for Chemicals

For Use With: Air, Ammonia, Sodium Hydroxide, Beverage, Carbon Dioxide, Diesel Fuel, Water, Oil, Ethylene Glycol, Food, Hydrochloric Acid, Kerosene, Liquid Carbon Dioxide, Methanol, Soap Solutions, Methyl Ethyl Ketone, Mineral Spirits, Natural Gas, Oxygen, Nitric Acid
Max. Pressure: 120 psi @ 75° F
Temperature Range: 40° to 140° F

Made of PVC, these orifices have excellent resistance to a wide range of corrosive chemicals. Also known as flow restrictors and precision orifice valves, they are used to throttle, vent, bleed, or regulate the flow of liquids and gases. They automatically adjust to changing inlet pressure to maintain consistent outlet flow.

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

PVC Plastic Body
Pipe Size	Lg.	Choose an Outlet Water Flow, gpm		Each
NPT Female × NPT Female
1/4	2 3/8"	0.25, 0.5, 0.75, 1, 1.5, 2	0000000	0000000
3/8	2"	0.25, 0.5, 0.75, 1, 1.5, 2	0000000	000000
1/2	2 1/4"	0.25, 0.5, 0.75, 1, 1.5, 2	0000000	000000
3/4	3 1/4"	3	0000000	000000
3/4	3 1/4"	4	0000000	000000
3/4	3 1/4"	5	0000000	000000
3/4	3 1/4"	6	0000000	000000
3/4	3 1/4"	7	0000000	000000
3/4	3 1/4"	8	0000000	000000
3/4	5"	9	0000000	000000
3/4	5"	10	0000000	000000

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How to Measure Fittings

Threaded Flow Control Orifices

Press-In Flow-Control Orifices

Compression Flow-Control Orifices

Barbed Flow-Control Orifices

Flange-Mount Flow-Control Orifices

Pressure-Compensating Threaded Flow-Control Orifices

Push-to-Connect Flow-Control Orifices

Flow-Control Orifices for Water

Flow-Control Orifices for Chemicals