New in 2004 - Jandy NeverLube Backwash Valve. We used our revolutionary NeverLube technology to create a Backwash Valve. The straight-through port design maximizes flow. The valve is so versatile you can use it on both sand and DE filters. And, when you use our Versa-coupler, it can adapt to most brands of filters. NeverLube technology means no service required and a lifetime guarantee on the diverter seal. Available in two models, 8034 and 8034J (with pre-plumbed kit). The 8034 model can be used on Jandy DEL Series filters and can be adapted to most brands of filters with the use of the Jandy Versa-Couplers. The 8034J is pre-plumbed for use on Jandy DEL48 and DEL60 filters.