This manifold provides an easy method to install multi-valve systems. 3 valves controls water flow for 3 sprinkler lines, installs in minutes, and hand tightens - no tools required. Commercial grade. This system works with both 3/4" and 1" systems. The manifold has a 1-1/4" MHT for all swivel (union) connections with a 1" I.D. ensuring maximum sealing surface area. Included are jar-top valves for easy valve maintenance. Easy wire system simplifies the wiring connection when attaching the valve to the timer. The manifold is made of high-impact materials and is UV-resistant.