Cleanroom technology

Semicon SP Cupla

The Nitto Kohki Semicon SP Cupla is a clean-room-rated quick-release coupling in stainless steel SUS304 with FKM or EPDM seals for semiconductor manufacturing and related high-purity processes. The extensive range of 72 types covers plugs (P-types) and sockets (S-types) in nominal sizes 1, 2, 3, 4, 6, and 8, each with G thread (F-suffix), NPT thread (NPT-suffix), and UNS thread (UNS-suffix). FKM seals (F-suffix) and EPDM seals (E-suffix) allow selection based on media compatibility.

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  1. Quick connect coupling Semicon SP Cupla 4S-304-KL, stainless steel - Nitto Kohki 349819524
    €882.69
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Buying guide

How to choose Semicon SP Cupla

What matters when choosing: properties, comparison and typical applications.

Technical features

⚙ SUS304 stainless steel - Corrosion resistant, suitable for ultrapure water (UPW), process gases, and humid clean-room environments
⬡ FKM and EPDM seals - FKM for fluorochemicals and synthetic media, EPDM for steam and polar solvents
↕ Nominal sizes 1-8 - Six size steps, compatible with G, NPT, and UNS threads per size
✓ Pressure-free disconnection - Coupling and uncoupling without residual pressure prevents particle contamination in clean rooms

Seal and thread overview

SealThreadType (plug)Type (socket)Nominal sizes
FKMG1P-304-F to 8P-304-F1S-304-F to 8S-304-F1, 2, 3, 4, 6, 8
FKMNPT1P-304-NPT-F to 4P-304-NPT-F1S-304-NPT-F to 4S-304-NPT-F1, 2, 3, 4
FKMUNS1P-304-UNS-F / 2P-304-UNS-F-1, 2
EPDMG1P-304-E to 8P-304-E1S-304-E to 8S-304-E1, 2, 3, 4, 6, 8
EPDMNPT1P-304-NPT-E / 2P-304-NPT-E1S-304-NPT-E / 2S-304-NPT-E1, 2

Typical applications

Typical applications: Process gas supply in wafer processing equipment (CMP, ALD, etch chambers), ultrapure water distribution (UPW) in fab environments, process gas panels in chip manufacturing, photolithography purge systems, analytical and high-purity laboratories, and pharmaceutical bioprocess equipment where stainless steel media contact and low-particle connections are required.