Plumbers in Mansfield, Texas

It shares your water service, which is the whole design

A residential sprinkler system is not a separate utility. In almost every house that has one, the sprinkler piping is fed from the same service line that feeds the fixtures, splitting after the meter at a riser assembly.

That is deliberate and it has consequences. Because the pipework is shared, water moves through at least part of it during ordinary use, which stops it going stagnant. It also means anything that reduces flow into the house, a partly closed valve, a failing regulator, a blocked service line, reduces what is available to the sprinklers.

The system was sized against a calculation. The designer worked out the flow and pressure needed for a small number of heads operating at once, using the water available at your street. Changes made later matter for that reason: a new irrigation tie-in, a filter, a softener or a pressure regulator installed in the wrong place can all eat into the margin that calculation relied on.

So tell whoever is working on the supply. When you book any work on the main line, the meter, a regulator or whole house treatment, say that the house has fire sprinklers. It changes where things can be fitted and it changes what must not be reduced.

Know where the riser is. It is usually in the garage or a utility space: a valve, a gauge and often a flow switch on the pipe. Find it once, in daylight, and note the normal reading on the gauge while everything is working.

The short list of things that go wrong

Residential sprinkler systems are undramatic. When they do cause trouble, it is nearly always one of these.

A head that has been painted, or hung from. Paint on a head can stop it operating, and so can a coat hanger, a plant hook or a bicycle looped over the pipe. Nothing hangs from sprinkler pipework, ever, and heads do not get decorated.

A head knocked during work. Ladders, furniture moves and loft work catch heads, and a sprinkler head that has been struck can leak or, occasionally, let go entirely. If one is bumped, treat it as damaged rather than hoping.

Freeze in the parts that run cold. The sprinkler pipework in a Texas house is usually in conditioned space for exactly this reason, but attic runs, garage sections and lines in exterior walls exist. Those are the sections to have checked before a hard freeze, and they are the sections that split.

A closed or partly closed control valve. The one failure with real consequences is a system that has been isolated and left that way, often after unrelated plumbing work. A closed valve is silent and looks like nothing at all.

A leaking or nuisance flow switch. Where a system is monitored, the flow switch can trip on a pressure surge and send an alarm with no fire and no leak. Irritating rather than serious, and worth diagnosing properly rather than disconnecting.

Cosmetic work is where heads get damaged. Ceiling painting, texture repair and new light fittings are the jobs that most often end with a compromised head, because the people doing them are careful about the ceiling rather than about the sprinkler. If a room is being redecorated, cover plates come off and go back on, and heads get masked rather than painted around.

Who is allowed to touch it, and who to call

This is where a lot of well meaning homeowners get into difficulty.

The sprinkler system is fire protection work. Modifying it, adding or moving heads, altering pipe runs or changing the riser assembly is the province of a licensed fire protection contractor, not general plumbing. We will say so plainly rather than improvise on a life safety system.

The water supply up to the system is plumbing. The service line, the meter side, the shutoff, a pressure regulator, a leak in the yard: that is our work, and it directly affects the sprinklers. Most of what we are called out for in a sprinklered house is on this side.

An active sprinkler leak is an emergency either way. Shut the system control valve if you can reach it and know which one it is, get the water stopped, and sort out the jurisdiction afterwards. Then have the system returned to service and verified by whoever is entitled to do it.

Do not leave a system isolated. If a valve had to be closed to stop a leak, put it in writing somewhere and make sure it gets reopened once the repair is done. A house with fire sprinklers that are switched off is worse than a house that never had them, because everyone assumes they work.

How a call plays out

Someone answers at any hour. Tell us whether the water is coming from a sprinkler head or from ordinary plumbing, whether an alarm has sounded, and whether you have found the control valve. If you are not sure which it is, describe where the water is and we will work it out on the phone.

Mansfield and southern Tarrant County are on our daily route, with overnight dispatch. We deal with the supply side, we do not modify fire protection pipework, and we will tell you exactly which contractor you need when that is the honest answer.