Installing an Underground Sprinkler System. If you have spent thousands of dollars on landscaping, and live in an area of uncertain rainfall, you might consider installing an underground sprinkler system. Although not a job for the casual do it yourselfer, the job can be accomplished if the plan is well thought out and you take the time to investigate the needed steps.After you plan your underground lawn irrigation system and purchase all your materials and equipment, you’re ready to start installation. If necessary you can rent a trenching machine for the job. Plan to have these tools on hand: Trenching shovel or a trenching machine hacksaw for cutting the PVC pipe Pipe wrench Pick Tape measure [.]Installing an in-ground irrigation system in your yard lets you program when your yard gets water and makes watering plants less time-consuming. A key component of setting up a system is properly.underground cables and pipelines on your property, such as: Gas Power Other _____ Phone TV & Internet cables Planning & Design Sprinkler System Layout & Installation Guide 3 Main Sprinkler Line 1" anti-siphon device sprinkler timer Sprinkler Wire Header Line 1" P Lateral Sprinkler Line 3/4" Valve Manifold SIt's not a project for inexperienced do-it-yourselfers, but installing a sprinkler system is something a handy homeowner can do to keep the lawn looking its best.Homeowners should budget about 3 to 5 days for their irrigation system to be installed. While an irrigation system install shouldn't disrupt daily.The cost to Install a Lawn Irrigation System starts at $1.55 – $2.45 per square foot, but can vary significantly with site conditions and options. Get fair costs for your SPECIFIC project requirements.Orbit WaterMaster contains a complete line of easy-to-use underground irrigation products, including sprinkler timers, valves, accessories, tools, and a wide variety of sprinkler head options. It is the #1 choice by homeowners for underground systems. watermaster products are innovative, easy-to-use, and engineered for durability and performance.Valves: connected to the controller is a system of valves, set in underground, easy-to-access boxes, that open/close to release/stop water flowing through underground pipes to the sprinklers. piping: pvc pipes buried 1-2 feet below the lawn’s surface carry water to the sprinklers heads.How To: Install an Underground Sprinkler System Lawn care, a continual but rarely enjoyed responsibility of homeownership, becomes much less of a day-to-day hassle for those who install an.