You select the size, fitting material and position, and O-ring seal material to meet your needs.
Justrite Stainless Steel Fitting Disconnect Assembly with Viton for 1/4" ID Tube, Installed, Stainless Steel/Polypropylene, 12015 Stainless Steel Fitting for 3/8-in (10mm) ID tubing: Based on your application choose polytetrafluoroethylene (PTFE), Viton® or EPDM seals with 1/4-in (6mm) flow. Stainless Steel Fitting for 1/4-in (6mm) ID tubing: Based on your application choose polytetrafluoroethylene (PTFE), Viton® or EPDM seals with 1/4-in (6mm) flow. | Justrite Stainless Steel Fitting Disconnect Assembly with Viton for 1/4" ID Tube, Installed, Stainless Steel/Polypropylene, 12015 A minimum of two disconnect fittings is required, one intake and one vent. NOTE: must be used under suction only.