Small Cupla

Niederdruck bis 19 bar

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Nitto Kohki Small Cupla quick-release couplings are designed for low-pressure pneumatic circuits up to 19 bar and deliver a flat-face, spill-free connection that eliminates air leakage on disconnect. The compact body series - available in bore sizes from 2.5 mm to 10 mm - achieves a Cv flow coefficient of up to 1.4, keeping pressure drop below 0.1 bar at nominal flow. One-touch push-to-connect and pull-to-release operation requires no tools and reduces changeover time to under 3 seconds per coupling, even under residual line pressure.

As an authorized distributor for Nitto Kohki pneumatic products, esd.equipment stocks 21 Small Cupla variants - including stainless steel, brass, and NBR/FKM seal options - covering thread standards NPT, Rc (BSPT), and G (BSPP) in accordance with ISO 6150 class B and JIS B 8312. All couplings are tested for leak-tightness at 1.5x rated pressure before shipment.

Key technical advantages - Small Cupla at a glance
Max. 19 bar working pressure - rated for full low-pressure pneumatic circuits, tested at 1.5x
Bore sizes 2.5-10 mm - scalable flow capacity, Cv up to 1.4 across the range
🛠 Tool-free coupling in <3 s - one-touch push-connect / pull-release, hot-swap under residual pressure
Flat-face spill-free design - zero fluid loss on disconnect, ISO 6150 class B compliant
🛡 NBR / FKM seal options - chemical resistance for oils, solvents, and compressed air applications
Stainless steel & brass body - corrosion-resistant variants, threads to NPT / Rc / G (BSPP / BSPT)

Nitto Kohki Small Cupla - Product overview

Series / Type Max. Pressure Bore Size Body Material Seal / Thread
Small Cupla 20S 19 bar 2.5 mm Brass NBR / Rc 1/8
Small Cupla 30S 19 bar 4.5 mm Brass NBR / Rc 1/4
Small Cupla 40S 19 bar 7.5 mm Brass / Stainless NBR / FKM / Rc 3/8
Small Cupla 50S 19 bar 10 mm Brass / Stainless NBR / FKM / Rc 1/2

Typical application areas: Electronics manufacturing and SMT assembly (IPC-A-610, IEC 61340-5-1), semiconductor fab tooling (SEMI S2), medical device production (ISO 13485), automotive body-shop pneumatics (IATF 16949), laboratory automation, robotic end-of-arm tooling, clean-room compressed-air distribution, and general precision pneumatic instrumentation circuits up to 19 bar.

Authorized Nitto Kohki Distributor 21 Small Cupla variants in stock - all series, all seal materials
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Ready to Ship Stock items dispatched same or next business day from EU warehouse
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ISO 6150 / JIS B 8312 Compliant Leak-tested at 1.5x rated pressure - flat-face spill-free design