4mm In-Line (non-return) Air Hose Connector

The 4mm In-Line non-return valve is designed to only allow the flow of air in a single direction which is important to ensure water is unable to back-siphon down the air hose and into the air pump.

• 4mm Air Hose Connection
• 1-Way Air Flow Design

Suitable for use with our range of Pond Air Pumps and our 4mm Black Air Hose:

Black Air Hose (4mm internal bore) 5 Metres

Black Air Hose (4mm internal bore) 15 Metres

Black Air Hose (4mm internal bore) 30 Metres

Black Air Hose (4mm internal bore) 60 Metres