Healthcare

Applications

Healthcare

Hospitals, clinics, care settings and specialist clinical water systems. HTM 04-01 and Category 5 washdown dominate specification.

Healthcare water system risks

Clinical washdown, bed-pan washers and plant-room filling points under HTM 04-01.

Risk reference

Connection type	BS EN 1717 category	Protection method	Notes
Clinical washdown	5	Type A air gap / AUK3	Mechanical devices not permitted
Hose union tap	3–5	RPZ or air gap	HTM 04-01 assumes Category 5 if the hose can reach a drain
Filling loop	4	RPZ (BA)	AIM-tested annually

Hospitals, clinics, care settings and specialist clinical water systems. HTM 04-01 and Category 5 washdown dominate specification.

Connection types, BS EN 1717 category and the minimum protection method.

Connection type	BS EN 1717 category	Protection method	Notes
Clinical washdown	5	Type A air gap / AUK3	Mechanical devices not permitted
Hose union tap	3–5	RPZ or air gap	HTM 04-01 assumes Category 5 if the hose can reach a drain
Filling loop	4	RPZ (BA)	AIM-tested annually

Regulation guide

Tools & calculators

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.

Insight

Missing test cocks, inverted relief valves, and isolation that makes annual AIM testing impossible.

Insight

Closed heating and chilled circuits are Category 4. A double check on the filling point is not enough.

Insight

When a mechanical device cannot replace a Type A air gap — and how to dimension the weir.