Quick connect coupling Semicon SCT Cupla SCT-8S-NPT, PTFE - Nitto Kohki 349804705

In semiconductor production a coupling in the chemical line must not release metal ions into the medium. The Nitto Kohki Semicon Cupla SCT type has a PTFE body, works up to 0.2 MPa and is cleaned, assembled, inspected and packed in a clean room.

• Polytetrafluoroethylene (PTFE) body with high resistance to chemicals
• No metal ions dissolve from the wetted parts, so the purity of high purity chemicals is preserved
• Shut-off valves in both socket and plug close on disconnection, so no medium escapes
• All components are cleaned, assembled, inspected and packed in a clean room
• Optional keyway coding in 10 patterns prevents connecting the wrong lines
• Working pressure up to 0.2 MPa (2 bar) for water, air, gases and high purity chemicals from +5 °C to +50 °C

Technical data from the manufacturer catalogue

Dimensions

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

Legend: L = overall length; D = socket outside diameter; T = thread or barb size

Models in this series SEMICON CUPLA SCT Type

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

Operating principle

• SCT Type: Polytetrafluoroethylene (PTFE) is utilised for the body.
• SCT Type: Polytetrafluoroethylene (PTFE ) body gives excellent resistance to chemicals.
• SCT Type: Both socket and plug have built-in automatic shut-off valves that prevent fluid from outflowing when disconnected.
• SCT Type: No dissolution of metal ions from part in contact with liquid ensures excellent reliability.
• SCT Type: All components are cleaned, assembled, inspected and then packed in a clean room.
• SCT Type: Appropriate model can be selected form a wide variety of sizes to suit your application/fluid.
• SCT Type: Optional keyway lock to prevent incorrect connection. 10 keyway patterns are available.
• SCY Type: Fluorine contained resin packing seal and perfluoroelastomer packing seal are used to reduce required connection load and to achieve tight sealing.

Series comparison

Choose SEMICON CUPLA SCT Type where the parts in contact with the liquid must not release metal ions: the body is PTFE, the valve is PFA and the O-ring is FEP-covered fluoro rubber, at the same 0.2 MPa {2 kgf/cm2} and two-way shut-off as SEMICON CUPLA SP Type. SCT Type covers 1/4 inch to 1 inch with female ISO Rc and female NPT threads and offers an optional keyway lock with 10 keyway patterns against incorrect connection. Where a spill reduction version is required, SEMICON CUPLA SP Type provides it with its SCAL Type.

Body and seal materials

Applications

• Chemical lines on semiconductor manufacturing equipment
• Wet processes with high purity chemicals where dissolved metal ions are a problem
• Water and gas lines on process equipment up to 0.2 MPa
• Changeover points with several similar lines, where the keyway coding secures the assignment
• Connections in five sizes from 1/4 inch to 1 inch with a minimum cross-sectional area of 12 mm² to 225 mm²

Compatibility

Different sizes cannot be connected to each other. Versions with a female Rc thread carry a V-groove on the body for identification, versions with a female NPT thread have no such groove on either socket or plug.

Standards and compliance

End connections are female Rc 1/4 to Rc 1 threads or NPT threads from 1/4-18NPT to 1-11.5NPT, the socket O-ring is FEP-covered fluoro rubber and the valve is made of fluoropolymer resin.

Safety and application notes

• SCT Type: Whichever method, overtightening may damage the thread and cause leakage, so take extra care.
• 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 145. The complete catalogue is available for download on this page.