Quick connect coupling S210 Cupla S210-2P, R 1/4, stainless steel - Nitto Kohki 590520221

Sea water, salt air and changing media wear out a hydraulic coupling faster than pressure alone. The S210 Cupla is made of SUS304 stainless steel and still reaches 20.6 MPa working pressure thanks to its inner seal mechanism, the same level as special steel bodied couplings.

• Working pressure of 20.6 MPa in port sizes 1/4 inch to 1 inch, achieved by the inner seal mechanism despite the stainless steel body.
• SUS304 stainless steel body with high corrosion resistance, made for tough conditions such as ocean development.
• Safety lock against accidental disconnection, engaged by pushing the sleeve stopper and turning it 90 degrees, which holds the connection under vibration and impact.
• Automatic shut-off valves in both socket and plug prevent fluid outflow on disconnection.
• Minimum cross-sectional area from 24 mm2 on S210-2SP up to 233 mm2 on S210-8SP, and once coupled the fluid may flow in either direction.
• Fluoro rubber FKM as the standard seal for -20 °C to +180 °C, nitrile rubber NBR for -20 °C to +80 °C as a made-to-order item, released for water, air, hydraulic oil and gas.
• A dust cap is supplied with the product and keeps the connecting face clean between uses.

Technical data from the manufacturer catalogue

Dimensions

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

Legend: L = overall length; H = width across flats or outside dimension; D = socket outside diameter; C = sleeve dimension; T = thread or barb size

Models in this series S210 CUPLA

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

Operating principle

• Body material is excellent corrosion resistant stainless steel (SUS304). Suited for use in tough conditions such as ocean development.
• Although it is made of stainless steel, the unique inner seal mechanism enables the working pressure of 20.6 MPa {210 kgf/cm2}, the same as special steel's.
• Separation prevention mechanism (safety lock) ensures tight and secured connection under vibration or impacts.
• Both socket and plug have built-in automatic shut-off valves that prevent fluid outflow on disconnection.
• The products come with dustproof caps.
• Various end configurations.

Series comparison

Choose S210 CUPLA when a line at 20.6 MPa {210 kgf/cm2} runs in a corrosive environment such as ocean development; 210 CUPLA and HYPER HSP CUPLA are rated at the same pressure and HSP CUPLA covers 14.0 to 20.6 MPa, and the argument for S210 CUPLA within that group is its SUS304 body together with the safety lock against vibration and impact. If the line calls for more pressure, the choice moves on to HSU CUPLA at 21.0 MPa, 280 CUPLA at 27.5 to 31.5 MPa, 350 CUPLA at 34.5 MPa, 450B CUPLA at 44.1 MPa or 700R CUPLA at 68.6 MPa, all of them two-way shut-off as well. For water, hydraulic oil or gas at 20.6 MPa the series covers 1/4 inch to 1 inch with FKM or NBR seals.

Body and seal materials

Applications

• Ocean development and offshore installations with a high corrosion load
• Hydraulic circuits up to 20.6 MPa in environments where plain steel corrodes too quickly
• Water and gas lines within the permitted media range
• Equipment exposed to vibration and impact, where the safety lock rules out disconnection
• Vacuum service down to 1.3 Pa, released for the coupled pair only and not for socket or plug on its own

Compatibility

Different sizes are not interchangeable, so a coupling always consists of a socket and a plug of the same size.

Standards and compliance

The body is made of SUS304 stainless steel, with fluoro rubber FKM and nitrile rubber NBR as the specified seal materials.

Safety and application notes

• Before use, please be sure to read the Safety Guide described at the end of this book and the 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 101. The complete catalogue is available for download on this page.