The air supply is immediately shut off by the HoseGuard, should the volume of air exceeds a set value.
This value is factory preset and is set to allow normal air consumption when using air tools.

Should the air consumption exceeds the set value, e.g. the air line is severed, then the internal piston instantly shuts off the main flow.

An integral bleed hole allows some air to flow through.
This enables the line pressure to automatically rest the HoseGuard one the main break is repaired.

Available in Aluminium  with female/female parallel BSP threads.

Max flow data shown @ 8 bar.

Flow measurement according to DIN EN 60534.

Max Inlet Pressure	18 bar
Temperature Range	1/8” - 1/2” BSPP	-20 °C to 80°C
	3/4” - 1” BSPP	-20 °C to 120°C
Materials
Housing	Aluminium
Other Parts	Nitrile,
	Rubber,
	Plastic,
	Stainless Steel

Protect Air	Thread	Flow Type	Max Flow	Dimensions
Ref	Connection		@ 8 bar	A	C	AF
281ZL0211	1/4” BSPP	Low Flow	0.86 l/s	49.0mm	-	22.0mm
281A0211	1/4” BSPP	Standard	12.6 l/s	49.0mm	-	22.0mm
281A0311	3/8 BSPP	Standard	18.0 l/s	58.0mm	-	27.0mm
281A0411	1/2” BSPP	Standard	50.3 l/s	65.0mm	-	30.0mm
281A0511	3/4” BSPP	Standard	67.8 l/s	76.0mm	36.0mm	30.0mm
281A0611	1” BSPP	Standard	87.0 l/s	100.0mm	50.0mm	41.0mm
281ZH0211	1/4” BSPP	High Flow	16.5 l/s	49.0mm	-	22.0mm
281Z0211-7-900	1/4” BSPP	High Flow	15.0 l/s	49.0mm	-	22.0mm
281ZH0511	3/4” BSPP	High Flow	87.5 l/s	76.0mm	36.0mm	30.0mm
281Z0511-7-5000	3/4” BSPP	High Flow	83.3 l/s	76.0mm	36.0mm	30.0mm