REF #1070
Type 21 Range
PCL Mini Couplings for robotics, medical & automation. Suitable for light engineering and instrumentation and automation industries.
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REF #1069
Mini Couplings
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£17.20 INC VAT
£14.33 EXC VAT
Type 21 Mini couplings are PCL's smallest standard, sized for light engineering, instrumentation and automation applications rather than general workshop air tools. They're common in robotics and medical equipment, where a compact connection matters more than high flow capacity.
The range covers mini adaptors and mini couplings in brass and plated steel. Brass suits applications needing better corrosion resistance or a cleaner environment; plated steel is the more common choice for general light engineering use.
If your application needs higher airflow than a mini coupling can deliver, check our Type 17, 19 or 25 ranges instead; mini couplings are sized for precision and low flow, not volume.
Orders over £200 to England and Wales qualify for free delivery.
Frequently Asked Questions
What applications use Type 21 Mini couplings?
They're typically used in robotics, medical equipment, instrumentation and light engineering, where a compact, low-flow connection is more important than high air volume.
Should I choose brass or plated steel?
Brass suits applications needing better corrosion resistance or a cleaner environment. Plated steel is the standard choice for general light engineering use.
Can I use Type 21 for standard workshop air tools?
Not usually recommended. Type 21 is sized for low-flow precision applications. For general workshop air tools, our Type 17, 19 or 25 ranges will suit better.
Do you deliver Type 21 couplings and adaptors near me?
The Hosemaster delivers to all UK mainland addresses. Orders over £200 to England and Wales qualify for free delivery, with 1–2 day delivery and same-day dispatch on most in-stock lines.