Quick connect coupling Mini Cupla Super S33SF, brass - Nitto Kohki 331103500

Mini Cupla Super keeps the small Mini Cupla format and pairs it with steel plugs. Brass sockets with an NBR seal and steel plugs give a connection that tolerates frequent coupling.

• Steel plugs stand up better to wear from repeated connecting and disconnecting
• Brass sockets with NBR seal, so the plug needs no seal of its own
• Connect and disconnect by hand, with no tools
• Small format for devices and benches with limited installation space
• Model codes carry a leading S for the Super version, which keeps stock identification clear

Technical data from the manufacturer catalogue

Dimensions

Dimensions in millimetres. Values in brackets apply in the connected condition.

Legend: L = overall length; T = thread or barb size; B = bore

Models in this series MINI CUPLA SUPER

Every model of the series as printed in the manufacturer catalogue. The row of the article offered here is highlighted.

Operating principle

• From cylinders to torches, all piping connections associated with welding and cutting equipment are push-to-connect operations.
• Plated body for better corrosion resistance.
• Heat-treated plugs for better durability.
• Oxygen and fuel gas CUPLA have different configuration sizes with sleeves in different appearances, silver colored plating for oxygen and copper colored plating for fuel gas, to prevent accidental interconnection.
• Smaller diameter design enables wider range of applications.
• Various types of end configurations have been standardized to comply with a wide range of welding and cutting equipment applications. Sockets themselves or plugs themselves are interchangeable with MINI CUPLA's counterparts.
• Push-to-connect operation (built-in automatic shut-off valve in socket).
• Heat-treated steel plugs for increased durability.

Series comparison

Pick MINI CUPLA SUPER when the line carries oxygen or fuel gas on welding and cutting equipment and the two media must not be joined by accident, which the separate S22 and S33 sizes with their differently plated sleeves prevent. Its working pressure of 0.7 MPa {7 kgf/cm2} is below that of the one-way shut-off siblings HI CUPLA BL, NUT CUPLA, LOCK CUPLA 200, HI CUPLA Two Way Type, ROTARY LINE CUPLA, ROTARY FULL BLOW LINE CUPLA and ROTARY PLUG at 1.5 MPa {15 kgf/cm2} and of PURGE LINE CUPLA at 1.0 MPa {10 kgf/cm2}, so those remain the choice for higher line pressures. Where the concern is spill on disconnection rather than keeping two media apart, the two-way shut-off COMPACT ZEROSPILL CUPLA at 1.0 MPa {10 kgf/cm2} applies instead.

Body and seal materials

Applications

• Assembly benches with frequent tool changes
• Device connections that are broken regularly
• Test rigs with changing set-ups
• Servicing and maintenance on small equipment

Safety and application notes

• To prevent accidental connection, CUPLA for oxygen are not interchangeable with CUPLA for fuel gas.
• Fluid must run from socket to plug.
• Not suitable for vacuum application in either connected or disconnected condition.
• The operable temperature range depends on the operating conditions.
• Before use, please be sure to read 'Safety Guide' described at the end of this book and 'Instruction Sheet' that comes with the products.

All technical data on this page is taken from the Nitto Kohki general catalogue Quick Connect Couplings C01en-b, page 71. The complete catalogue is available for download on this page.