Watts RK757/757DCDA-CK2 21/2-4 - Part of the RK-757 Series SITEDRAIN The herbicide used is called

The herbicide used is called Trifluralin and it does not cause any damage to the tree or to tree root growth in the areas not next to the nodules

ZB101-16NL

ZC104-20-3IP

*Sold in multiples of 4 rolls only*

Watts RK757/757DCDA-CK2 21/2-4 - Part of the RK-757 Series SITEDRAIN The herbicide used is calledThis second check repair kit provides all the parts necessary to repair or replace the second check on a 2 1 2 to 4 inch double check valve assembly backflow preventer, model 757, and double check detector assembly backflow preventer, model 757DCDA. This kit consist of a first check module, check module O ring, and red silicone disc elastomer. Features Factory replacement kit No special tools required for servicing All parts are made of high quality