The socket will convert a standard 110mm ID Bottom Drain Sump into a Sump that will receive 4" pressure pipe. Why An Aerated Bottom Drain?. - The benefit of having an Aerator on your Bottom Drain is the rising air bubbles make an uplift, this circulates the water towards the Bottom Drain making the Bottom Drain up to 30% more efficient at removing debris and waste from the pond.
eBay
The stand pipe & disc allow for a diffuser to attach to the top for which the airline can be attached - can also be made to suit any size outlet. The pipe shown in picture is just to show you how it fits.
eBay
Quality Bottom Drain Large Sump 4" 110MM ID Flanged Liner Connector With Stainless Steel Screws. Koi Pond Liner Connector. Carole & Ronnie Hewitt have been keeping koi for over twenty five years now and are very much involved in all aspects of koi keeping.
eBay
The design focuses on simplicity, reliability, and ease of construction whiles reducing the amount of “clutter” in and through your pond. Originating from a steeple design of bottom drain and aerator that has been on the market since the early 2000s.
eBay
KOCKNEY KOI YAMITSU TOMMY BOTTOM DRAIN. PMF Koi & Aquatics.
eBay
The stand pipe & disc allow for a diffuser to attach to the top for which the airline can be attached. These drains can also be supplied with a clamping ring at £19.99 extra to suit pond liners. The Pipe in photo is just to show as Example of how to fit pipe.
eBay
Large Sump Bottom Drain For installation at lowest point of pond. A must for gravity fed systems.
eBay
Perfect for Koi keepers who like to have a silt free pond with a minimum of pipework showing. Standard Bottom Drain. Standard bottom drain. Pisces Black Corrugated Hose. Key Features. Black look to blend in with liners.
eBay