Hollow screw with PTFE sealing ring, Single, G 1/4 - Riegler 110445

Hollow screw with PTFE sealing ring, Single, G 1/4, Working pressure max. 15 bar, Stainless steel 1.4404 For use with aggressive media and in areas susceptible to corrosive outside influences, in the food processing industry and in hygienic and sanitary applications.

Standards and origin

• Standard thread: DIN EN ISO 228-1
• Customs tariff number: 73071990
• Country of origin: IT

About Banjo bolts and ring nipples

A banjo bolt and a banjo fitting together form a connection whose hose outlet can still be turned after tightening. Hoses from 4 to 12 mm outside diameter are accepted and the working pressure runs from -0.98 bar under vacuum up to 16 bar. That allows cylinders and valves to be connected where a rigid fitting no longer fits.

What matters when choosing

• Bolt threads run from M5 male through G 1/8 and G 1/4 male up to G 3/8 and G 1/2 male. The parallel threads follow DIN EN ISO 228-1.
• Hose outside diameter of 4 to 12 mm has to match the tubing in use, since each fitting is built for one size only.
• Material separates the series. click-clock is nickel-plated brass, inox line is stainless steel 1.4404, and aluminium versions are available as well.
• The sealing material - NBR, FKM, FPM or PTFE - sets the temperature limit. The usual range is -20 °C to 70 °C, while heat-resistant versions reach 150 °C.
• For vacuum work, check the lower working pressure of -0.98 bar. Compressed air is rated up to 16 bar.

Typical applications

• Connecting pneumatic cylinders whose ports leave little room.
• Valve manifolds and control blocks where hose direction is only decided during assembly.
• Jig and tool building with tight routing.
• Handling equipment with suction cups working down to -0.98 bar.
• Plant areas where nickel-plated brass is not enough and stainless steel 1.4404 is specified.

Threads comply with DIN EN ISO 228-1 and the stated medium is compressed air. Production takes place in Italy and Germany, and the group holds 46 articles.