Aquascape Dual Union Check Valve 2.0 for Pond， Waterfall and Water Feature Pumps | 48026<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>The innovative AquascapePRO Dual Union Check Valve 2.0 provides a professional pump and plumbing connection inside skimmer filter systems， as well as Pondless Water Vaults.</li><li>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.</li><li>Union connections on both both sides of the valve make pump and filter maintenance quick and easy without the use of tools.</li><li>Height extendable for larger filters and pumps</li><li>(2) - 2" MPT x 2" Slip Fitting， (1) - 1.5" FPT x 2" Slip Fitting</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41frRkV8P2L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/313ekT2mfLL.jpg" noproxy>