Commercial Sprinkler System Replacement at a Chase Bank in Mountain View

Commercial properties depend on their irrigation systems more than most owners realize. When an old system starts leaking, the signs show up as soggy planters, dry patches, water running onto the parking lot and a higher water bill. At this Chase Bank branch in Mountain View, the sprinkler system along the parking lot planters needed more than a patch. Our team replaced the valves and the PVC lines feeding them. Here is how the job went, step by step.

Why replace instead of repair

Patching one leak at a time makes sense when a system is in good shape. It stops making sense when the valves are worn, the PVC has become brittle and leaks keep showing up in new places. On a commercial site, every repeat visit also means more disruption for staff and customers. Replacing the valves and the main sections of pipe at once gives the property a reliable system and a clean starting point for maintenance.

If you are trying to decide whether a single valve can be saved, our guide to sprinkler valve repair explains the signs of a bad valve and the fixes worth trying first.

Step 1: Opening up the planters safely

The irrigation lines run inside narrow planter strips right next to the parking lot and the drive aisle. Before digging, the crew taped off each work area so customers and staff could move around safely, then opened a trench along the inside of the curb to expose the existing lines.

Step 2: New PVC lines and fittings

With the old lines exposed, the damaged sections were cut out and replaced with new PVC pipe, tees and couplings. Every joint was primed and solvent welded, which is the step that decides whether a repair lasts for years or starts weeping again in a few months.

Step 3: Valves reconnected

The irrigation valves were reconnected to the new lines with fresh PVC risers, and the valve wiring was checked so each zone would open and close from the controller.

Step 4: Pressure test, backfill and cleanup

Before anything was buried, the system was turned on and checked under pressure for leaks. Once everything held, the trenches were backfilled, the valve boxes were set back at grade so the valves stay easy to reach for future service, and the planters were cleaned up.

What property managers should take from this

• Watch for the early signs: water on the pavement, planters that never dry, a zone that runs nonstop, or a jump in the water bill.
• Leaks on the main line never stop. The pipe feeding the valves is always under pressure, so a leak there wastes water around the clock.
• Replacing in one visit often costs less than several separate repairs, and it means less disruption for the business.
• Keep valve boxes accessible. It makes every future repair faster and cheaper.

Indoor water pressure can be affected by outdoor leaks too. If your building also has weak pressure, see our guide on the common causes of low water pressure.

Frequently asked questions

When should a commercial sprinkler system be replaced instead of repaired?

When leaks keep coming back, several valves are failing, or the PVC lines are old and brittle, replacing the valves and main sections usually costs less over time than repeated repairs and wasted water.

Can a sprinkler system be replaced while the business stays open?

Yes. Work areas are taped off, trenches are kept narrow and close to the planters, and walkways and parking stay usable while the crew works.

Do you work outside San Francisco?

Yes. Our base is in San Francisco and we take commercial plumbing and irrigation work across the Bay Area, including the Peninsula and the South Bay.