Bird Precision
Bird Precision
One Spruce Street, P.O. Box 540569
Waltham, MA 02454-0569 USA
Phone: (800) 454-7369
Fax: (800) 370–6308
Email: sales@birdprecision.com
Website: www.birdprecision.com
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Stainless Union Orifice Connector for 1/4" Diameter Stainless Tubing

Stainless Steel Union Orifice Connector RB82631 connects 1/4" stainless tubing inline. Sapphire or ruby orifices are swaged in place by proprietary methods. For elevated pressure applications the flow should push the orifice into its seat in the connector for best results.

RB82631 is available with all three orifice styles. Sizes range from 0.0004" thru 0.081".
RB82631 Series Stainless Steel Orifice Union Connector
Unit of Measure
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Item #

Item Name

Orifice Inner Diameter (I.D.)

Diameter

Tube Diameter

Orifice Outer Diameter (O.D.)

RB82631SS-22420 N/A RB82631 Series 0.0210 Inch (in) Inner Diameter (I.D.) and 0.118 Inch (in) Outer Diameter (O.D.) Stainless Steel Orifice Union N/A 0.0210 in N/A 1/4 in N/A 1/4 in N/A 0.1180 in
RB82631SS-22421 N/A RB82631 Series 0.0220 Inch (in) Inner Diameter (I.D.) and 0.118 Inch (in) Outer Diameter (O.D.) Stainless Steel Orifice Union N/A 0.0220 in N/A 1/4 in N/A 1/4 in N/A 0.1180 in
RB82631SS-22378 N/A RB82631 Series 0.0230 Inch (in) Inner Diameter (I.D.) and 0.118 Inch (in) Outer Diameter (O.D.) Stainless Steel Orifice Union N/A 0.0230 in N/A 1/4 in N/A 1/4 in N/A 0.1180 in
RB82631SS-22409 N/A RB82631 Series 0.0240 Inch (in) Inner Diameter (I.D.) and 0.118 Inch (in) Outer Diameter (O.D.) Stainless Steel Orifice Union N/A 0.0240 in N/A 1/4 in N/A 1/4 in N/A 0.1180 in
RB82631SS-22313 N/A RB82631 Series 0.0250 Inch (in) Inner Diameter (I.D.) and 0.118 Inch (in) Outer Diameter (O.D.) Stainless Steel Orifice Union N/A 0.0250 in N/A 1/4 in N/A 1/4 in N/A 0.1180 in
RB82631SS-22119 N/A RB82631 Series 0.0260 Inch (in) Inner Diameter (I.D.) and 0.118 Inch (in) Outer Diameter (O.D.) Stainless Steel Orifice Union N/A 0.0260 in N/A 1/4 in N/A 1/4 in N/A 0.1180 in
RB82631SS-22126 N/A RB82631 Series 0.0270 Inch (in) Inner Diameter (I.D.) and 0.118 Inch (in) Outer Diameter (O.D.) Stainless Steel Orifice Union N/A 0.0270 in N/A 1/4 in N/A 1/4 in N/A 0.1180 in
RB82631SS-22513 N/A RB82631 Series 0.0275 Inch (in) Inner Diameter (I.D.) and 0.118 Inch (in) Outer Diameter (O.D.) Stainless Steel Orifice Union N/A 0.0275 in N/A 1/4 in N/A 1/4 in N/A 0.1180 in
RB82631SS-22342 N/A RB82631 Series 0.0280 Inch (in) Inner Diameter (I.D.) and 0.118 Inch (in) Outer Diameter (O.D.) Stainless Steel Orifice Union N/A 0.0280 in N/A 1/4 in N/A 1/4 in N/A 0.1180 in
RB82631SS-22345 N/A RB82631 Series 0.0290 Inch (in) Inner Diameter (I.D.) and 0.118 Inch (in) Outer Diameter (O.D.) Stainless Steel Orifice Union N/A 0.0290 in N/A 1/4 in N/A 1/4 in N/A 0.1180 in
RB82631SS-22317 N/A RB82631 Series 0.0300 Inch (in) Inner Diameter (I.D.) and 0.118 Inch (in) Outer Diameter (O.D.) Stainless Steel Orifice Union N/A 0.0300 in N/A 1/4 in N/A 1/4 in N/A 0.1180 in
RB82631SS-22416 N/A RB82631 Series 0.0310 Inch (in) Inner Diameter (I.D.) and 0.118 Inch (in) Outer Diameter (O.D.) Stainless Steel Orifice Union N/A 0.0310 in N/A 1/4 in N/A 1/4 in N/A 0.1180 in
RB82631SS-22304 N/A RB82631 Series 0.0320 Inch (in) Inner Diameter (I.D.) and 0.118 Inch (in) Outer Diameter (O.D.) Stainless Steel Orifice Union N/A 0.0320 in N/A 1/4 in N/A 1/4 in N/A 0.1180 in
RB82631SS-22471 N/A RB82631 Series 0.0330 Inch (in) Inner Diameter (I.D.) and 0.118 Inch (in) Outer Diameter (O.D.) Stainless Steel Orifice Union N/A 0.0330 in N/A 1/4 in N/A 1/4 in N/A 0.1180 in
RB82631SS-22323 N/A RB82631 Series 0.0340 Inch (in) Inner Diameter (I.D.) and 0.118 Inch (in) Outer Diameter (O.D.) Stainless Steel Orifice Union N/A 0.0340 in N/A 1/4 in N/A 1/4 in N/A 0.1180 in
RB82631SS-22014 N/A RB82631 Series 0.0350 Inch (in) Inner Diameter (I.D.) and 0.118 Inch (in) Outer Diameter (O.D.) Stainless Steel Orifice Union N/A 0.0350 in N/A 1/4 in N/A 1/4 in N/A 0.1180 in
RB82631SS-22306 N/A RB82631 Series 0.0360 Inch (in) Inner Diameter (I.D.) and 0.118 Inch (in) Outer Diameter (O.D.) Stainless Steel Orifice Union N/A 0.0360 in N/A 1/4 in N/A 1/4 in N/A 0.1180 in
RB82631SS-22009 N/A RB82631 Series 0.0370 Inch (in) Inner Diameter (I.D.) and 0.118 Inch (in) Outer Diameter (O.D.) Stainless Steel Orifice Union N/A 0.0370 in N/A 1/4 in N/A 1/4 in N/A 0.1180 in
RB82631SS-22341 N/A RB82631 Series 0.0380 Inch (in) Inner Diameter (I.D.) and 0.118 Inch (in) Outer Diameter (O.D.) Stainless Steel Orifice Union N/A 0.0380 in N/A 1/4 in N/A 1/4 in N/A 0.1180 in
RB82631SS-22358 N/A RB82631 Series 0.0390 Inch (in) Inner Diameter (I.D.) and 0.118 Inch (in) Outer Diameter (O.D.) Stainless Steel Orifice Union N/A 0.0390 in N/A 1/4 in N/A 1/4 in N/A 0.1180 in
RB82631SS-22295 N/A RB82631 Series 0.0400 Inch (in) Inner Diameter (I.D.) and 0.118 Inch (in) Outer Diameter (O.D.) Stainless Steel Orifice Union N/A 0.0400 in N/A 1/4 in N/A 1/4 in N/A 0.1180 in
RB82631SS-22144 N/A RB82631 Series 0.0410 Inch (in) Inner Diameter (I.D.) and 0.118 Inch (in) Outer Diameter (O.D.) Stainless Steel Orifice Union N/A 0.0410 in N/A 1/4 in N/A 1/4 in N/A 0.1180 in
RB82631SS-22109 N/A RB82631 Series 0.0420 Inch (in) Inner Diameter (I.D.) and 0.118 Inch (in) Outer Diameter (O.D.) Stainless Steel Orifice Union N/A 0.0420 in N/A 1/4 in N/A 1/4 in N/A 0.1180 in
RB82631SS-22145 N/A RB82631 Series 0.0430 Inch (in) Inner Diameter (I.D.) and 0.118 Inch (in) Outer Diameter (O.D.) Stainless Steel Orifice Union N/A 0.0430 in N/A 1/4 in N/A 1/4 in N/A 0.1180 in
RB82631SS-22117 N/A RB82631 Series 0.0440 Inch (in) Inner Diameter (I.D.) and 0.118 Inch (in) Outer Diameter (O.D.) Stainless Steel Orifice Union N/A 0.0440 in N/A 1/4 in N/A 1/4 in N/A 0.1180 in
Unit of Measure
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