![Just setup an in-line sprinkler manifold/controller but getting a water hammer when I turn one of the controllers on. Any thoughts? Any reason I shouldn't have installed this vertically instead of flat Just setup an in-line sprinkler manifold/controller but getting a water hammer when I turn one of the controllers on. Any thoughts? Any reason I shouldn't have installed this vertically instead of flat](https://preview.redd.it/fo8frmm8gaj61.jpg?auto=webp&s=4f1f87df374e4b8959e938a397a4af5f821c25fc)
Just setup an in-line sprinkler manifold/controller but getting a water hammer when I turn one of the controllers on. Any thoughts? Any reason I shouldn't have installed this vertically instead of flat
![Amazon.com : Rain Bird PESB In-Line Valve with Scrubber and Flow Control 1-1/2 in. FPT | 150-PESB : Patio, Lawn & Garden Amazon.com : Rain Bird PESB In-Line Valve with Scrubber and Flow Control 1-1/2 in. FPT | 150-PESB : Patio, Lawn & Garden](https://m.media-amazon.com/images/I/51qHARMkLFL._AC_UF894,1000_QL80_.jpg)
Amazon.com : Rain Bird PESB In-Line Valve with Scrubber and Flow Control 1-1/2 in. FPT | 150-PESB : Patio, Lawn & Garden
![EFIELD MH-S-241 Angle Stainless Steel Water Hammer Arrestors, 3/4 Inch Swivel FHT x 3/4 Inch MHT (1) - Amazon.com EFIELD MH-S-241 Angle Stainless Steel Water Hammer Arrestors, 3/4 Inch Swivel FHT x 3/4 Inch MHT (1) - Amazon.com](https://m.media-amazon.com/images/I/41x9QrIoDLL.jpg)