Nut Cupla

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Nitto Kohki Nut Cupla quick-release couplings deliver a one-handed, tool-free connection rated for working pressures up to 1.5 MPa (15 bar) and flow coefficients (Cv) from 0.4 to 4.5 depending on series, with internal valve designs that reduce pressure drop to <0.05 MPa at nominal flow. The socket features a captive hexagonal nut sleeve that locks onto male plugs with a single quarter-turn, achieving <1 s connect and disconnect times even under residual line pressure up to 0.3 MPa - a critical advantage in automated assembly environments where cycle times are measured in tenths of a second.

As an authorized distributor for Nitto Kohki pneumatic products, esd.equipment stocks 25 Nut Cupla variants covering body sizes 10A, 20A, 30A, and 40A in brass, stainless steel, and nickel-plated steel, fully conforming to ISO 4414 pneumatic system safety requirements and cross-compatible with JIS B 8630 coupling standards. All units are supplied with traceable lot documentation and are available for immediate dispatch from European warehouse stock.

Key technical advantages - Nut Cupla at a glance
Up to 1.5 MPa (15 bar) - max. working pressure across all Nut Cupla series
Sizes 10A - 40A - four body sizes covering pipe threads G1/8 to G1/2
🛠 <1 s connect / disconnect - quarter-turn nut sleeve, tool-free under residual pressure
Cv 0.4 - 4.5 - low pressure-drop internal valve, <0.05 MPa at nominal flow
🛡 ISO 4414 / JIS B 8630 - compliant design, cross-compatible with standard pneumatic systems
Brass, stainless steel, nickel-plated - three body materials for corrosive and food-grade environments

Nitto Kohki Nut Cupla - Product overview

Series / Size Body size Max. pressure Material Key feature
Nut Cupla 10A G1/8, 6 mm OD 1.5 MPa Brass / Nickel Compact, instrument air lines
Nut Cupla 20A G1/4, 8 mm OD 1.5 MPa Brass / Stainless General-purpose, Cv 1.2
Nut Cupla 30A G3/8, 10 mm OD 1.5 MPa Brass / Nickel Medium flow, Cv 2.5, auto assembly
Nut Cupla 40A G1/2, 12 mm OD 1.5 MPa Brass / Stainless High flow, Cv 4.5, heavy tooling

Typical application areas: Industrial automation and pneumatic tooling (ISO 4414, ISO 8573-1), semiconductor wafer handling and cleanroom assembly (SEMI S2), automotive body-in-white and paint-shop air circuits (IATF 16949, VDA 6.3), medical device manufacturing (ISO 13485), electronics assembly and SMT lines (IPC-A-610), machine tool quick-change fixtures and maintenance panels (DIN EN ISO 4414).

Authorized Nitto Kohki Distributor Genuine Nut Cupla couplings with full manufacturer traceability and lot documentation
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25 Variants in Stock Sizes 10A-40A in brass, stainless steel & nickel-plated - ready for same-day dispatch from EU warehouse
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ISO 4414 & JIS B 8630 Compliant Drop-in compatible with existing Nitto Kohki and JIS-standard pneumatic coupling systems