Kockney Koi's Anti syphon non return valves are for 4mm airline.
Printed arrows on the valve insure the item is correctly installed to stop any water returning up the pipe and into the pump.
Arrow head is to be pointed towards the airstone and away from the pump.
Supplied to the trade in packs of 25.
Anti Syphon Non Return Valves
- Brand: Kockney Koi
- Product Code: 0
- Availability: In Stock