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Description
• COMPREHENSIVE – One of a comprehensive range of high-quality components for the John Guest® Air Supply Ring Main System.
• QUICK – Install your own workshop compressed air ring main quickly, easily, and competitively with the CAS system of fast fit compressed air fittings.
• VERSATILE – Can also be used for water movement not meant for human consumption.
• CONNECTIVITY – Converts pipe end to male thread.
• DURABLE – Brass Straight Adaptor Ø28mm x 1″BSPT.
![John Guest® Brass Straight Adaptor 28mm x 1"BSPT [CAS28BSA]](https://www.toolpointsolutions.com/wp-content/uploads/2026/09/CAS28BSA__71297.1720557522-324x324.webp)