AHU Drain Check Valves:

Small Duckbills 18-90mm

The Measurit AHU valve is designed to allow the flow of blowdown water and condensate to drain.

The EPDM valve is non reinforced allowing a flexible size range.

The valve is normally sealed shut and prevents the ingress of pollen and insects. There is a slit in the curved bill that allows water to drain.

Model Code	Pipe Size mm	W	H	L	Bill
AHU-20	15-20mm	50	25	73	SB
AHU-30	25-34mm	64	38	117	SB
AHU-40	35-40mm	66	30	96	CB
AHU-50	41-50mm	80	35	105	CB
AHU-60	51-60mm	97	35	115	CB
AHU-50-Max	40-50mm	91	40	150	SB
AHU-60-Max	51-63mm	115	40	175	SB

Smoke is deployed in floor gully while AHU is active.

Smoke ingress without valve fitted. This means that pollen and insects would be drawn into the COLO.

No smoke ingress, valves allow the flow of water to drain but prevent smoke (dust, pollen and insects) from entering the pipes.

We have decades of extensive experience with rubber check valve application in demanding Atlantic coastal sites.

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