For Use With For Use With 

Maximum Pressure Maximum Pressure 


Water Flow Water Flow 

Orifice Diameter Orifice Diameter 

Body Material Body Material 


Connection Style Connection Style 

Threaded  Barbed 
Compression 
Plug Head Style Plug Head Style 

Hex Socket  Hex Head 
Air Flow Air Flow 


Outlet Water Flow Outlet Water Flow 

Length Length 

Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.
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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 3D 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 
0.016"  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 
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 
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 
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 
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 
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 
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 
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  
1032  7/16"  0000000  000000 
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 
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 
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 
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 
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 
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 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 1/2"  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 1/2"  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 1/2"  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 1/2"  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 1/2"  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 1/2"  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 1/2"  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 1/2"  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 1/2"  0000000  000000 
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.
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 
For Tube ID  Lg.  Each  
Barbed × Barbed  

1/4"  1 5/16"  0000000  000000 
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.
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 
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.
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.
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 
Lg.  OD  For Hole Dia.  Each  
303 Stainless Steel Body  

1/8"  1/4"  0.257"  0000000  000000 
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.
Nickelplated 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 3D models, click on a part number.
Pipe Size  Lg.  Choose an Outlet Water Flow, gpm  Each  
NickelPlated Brass Body  

NPT Female × NPT Female  
3/8  1 3/4"  0000000  000000  
1/2  1 15/16"  0000000  00000  
3/4  2 1/4"  0000000  00000  
1  2 3/4"  0000000  00000  
316 Stainless Steel Body  
NPT Female × NPT Female  
3/8  1 3/4"  0000000  000000  
1/2  1 15/16"  0000000  000000  
3/4  2 1/4"  0000000  000000  
1  2 3/4"  0000000  000000 
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.
Pipe Size  Lg.  Choose an Outlet Water Flow, gpm  Each  
PVC Plastic Body  

NPT Female × NPT Female  
1/4  2 3/8"  0000000  0000000  
3/8  2"  0000000  000000  
1/2  2 1/4"  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 
1  3 1/2"  5  0000000  000000 
1  3 1/2"  6  0000000  000000 
1  3 1/2"  7  0000000  000000 
1  3 1/2"  8  0000000  000000 
1  5"  9  0000000  000000 
1  5"  10  0000000  000000 
1  5"  12  0000000  000000 
1  5"  14  0000000  000000 
1  5"  16  0000000  000000 