The air line hose pipe is a quality PVC tubing with a 4mm internal diameter which will fit most fish pond and aquarium air pump such as the Pond One O2, Superfish air pumps, Hozelock, Evolution Aquaand many more
This air line is FDA approved and manufactured to ISO 9001-2008 standards. It is also flexible and suitable for food contact applications.
The Algarde starter valve help control the flow of air to a given air powered item such as an aquarium ornament or air stone. This starter valve from Algarde will connect to a standard 4mm air line pipe and is made from a durable plastic.