Removable connection added below check valves allowing you to remove pump without draining the BioFalls filter. You need a check valve assembly to hook up your pump to your plumbing.  Prevents water from draining out of your Biofalls filter. Simplifies pump removal In 2018, Aquascape re-designed their standard Check Valve. 

Dual Union Check Valve 2.0 #48026 will fit and replace ALL Aquascape 2″ Check Valves for all their newer pumps, skimmers and vaults.

The AquascapePRO Dual Union Check Valve 2.0 provides a professional pump and plumbing connection inside skimmer filter systems, as well as Pondless® Water Vaults. The heavy-duty, swing-style check valve flapper maximizes water flow through the valve when open, while preventing the backflow of water when the pump is shut off or during a power outage. Union connections on both sides of the valve make pump and filter maintenance quick and easy without the use of tools. A set of innovative reversible fittings take the guesswork out of finding the right pump or filter fitting and allows the extension of valve height for taller filter applications, making this a truly universal check valve designed for water features. Fittings Included:

• 2 – Reversible 2″ MPT x 2″ Slip
• 1 – Reversible 1.5″ FPT x 2″ Slip
• 1 – 2″ Check Valve Elbow

July 2018: Aquascape  discontinued and is completely out-of-stock forever for the #29703 Elbows for replacing the old Check Valves. Aquascape’s Dual Union Check Valve 2.0 #48026 introduced in 2017 seamlessly replaces the original Aquascape Check Valves in the Signature Series Skimmers (the ones with the big black plastic half-moon shaped debris baskets) by simply removing all the plumbing parts from the old Check Valve and using all the parts that come with the new Check Valve.