18mm Neta garden hose sucking flat.

[CharlieBear62]

Has anyone had this problem before, I'm trying to transfer rain water between 2 poly tanks and where the water exits one tank and goes into the Davey 2 tap pump the Neta 18mm garden hose sucks flat.

Is there an easy solution to this without buying a new pump of new hose.

With the ongoing high costs of living I want to continue using the 18mm Neta fittings.18mm Neta hose and Neta fittingsDavey SJ35-04PC 2 tap pump

[Noyade]

Afternoon @CharlieBear62 

I have been caught out with tap/hose fittings that have a one-way valve.

Could this be the problem?

Just a thought.

Cheers. 

[MitchellMc]

Hi @CharlieBear62,

I would presume the pump is creating a vacuum in the pipe during transfer, which is crushing the soft walls of the garden hose. A garden hose could be used on the pressurised side to transfer water elsewhere, but its walls are not strong enough to be on the suction side. You would need to use a reinforced hose that can withstand the suction forces. Potentially something like this Kinetic 19mm x 2m Food Contact Multi-Purpose Reinforced Pressure Hose could work with your 18mm fittings.

Please let me know if you have any questions.

Mitchell

[AlanM52]

Hi @CharlieBear62,

A garden hose is designed for positive pressure and when used on the inlet side of a water pump is subjected to negative pressure - and will collapse.

@MitchellMc's suggestion to use reinforced hose is spot on!

Cheers