Emergency Plumber in Stone Mountain, GA for Urgent Plumbing Problems

A burst washer hose or a spraying supply line is an emergency plumbing problem on its own. When it comes after a run of smaller failures, such as a toilet that keeps hissing, a faucet that will not stop dripping and a relief valve weeping on the water heater, the pressure in the pipes deserves a closer look. In a Stone Mountain house where pressure runs too high, fixing the burst part without checking it can simply set up the next leak. Alpha Plumbing and Sewer answers calls about bursts like this 24/7, and the pressure question is worth raising once the water is off.

Signs the pressure may be too high

• Several hoses, supply lines or fill valves failing within months of each other.
• Faucets that blast when opened and splash out of the sink.
• Pipes that bang when a washer or dishwasher valve snaps shut.
• A toilet that refills by itself every so often with nobody using it.
• The relief valve on the water heater dripping, especially overnight.

What the pressure-reducing valve does

Many homes have a pressure-reducing valve, usually a bell-shaped brass fitting on the main line near where it enters the house, or sometimes in the yard near the meter. It lowers the pressure from the street to a steadier level. Its spring and diaphragm wear out over time, and a failing valve can let pressure creep up or pass street pressure straight through. Nothing looks different from outside, which is why the problem often goes unnoticed until something bursts.

Test it with a gauge

A water pressure gauge that threads onto a hose connection costs little at a hardware store. Use a suitably rated gauge at a safe, accessible cold-water connection downstream of the regulator, following its instructions. Do not disturb a stuck valve or leaking connection, and relieve pressure before removing the gauge. A gauge with a second, trailing needle records the highest pressure reached, so a longer observation can reveal a peak missed by a spot check, although a mechanical gauge may miss very fast surges. A steady reading well above about 80 psi, or a big overnight jump, points to a pressure problem; the regulator, incoming street pressure and thermal expansion are the usual things to check.

Thermal expansion and the expansion tank

Water expands as the water heater warms it. Where a pressure-reducing valve or check valve keeps that extra volume from pushing back toward the street, the pressure has nowhere to go but up. A small expansion tank near the water heater gives it room. When that tank's internal bladder fails and the tank fills with water, pressure spikes return and the heater's relief valve often starts to drip.

What to do during the leak

Close the main shutoff and open a low cold-water faucet to bleed off pressure; avoid running hot water, which draws down the heater. Replace nothing yet. Above all, never cap or plug a dripping relief valve on a water heater: it is a safety device, and its discharge is a symptom to diagnose, not a leak to stop. If the heater could lose water, follow its shutdown instructions before draining where safe. Operate an electric breaker only at a dry, safely reachable panel; a gas heater also needs its model-specific shutdown procedure.

Fixing the cause along with the leak

The plumber repairs or replaces the failed hose, line or valve, then measures the house pressure before calling the job done. A worn regulator can sometimes be adjusted but is often replaced, and a failed expansion tank is replaced and set to match the house pressure. Water pressure and PRV service covers that testing and replacement. Fill valves and faucet cartridges worn out by high pressure can be handled at the same time through faucet and valve repair, and if a gas heater's relief valve keeps weeping once the pressure is corrected, gas water heater service can check the valve and the tank.

Water pressure questions in Stone Mountain

What water pressure is normal for a house?

Many homes run comfortably somewhere around 50 to 70 psi. Household plumbing is generally kept at or below about 80 psi, because higher pressure wears out hoses, fill valves and faucet parts faster. Very low pressure is a different problem, often a partly closed valve, a clogged fixture or a leak, and it is worth checking too.

Can high pressure make a toilet run by itself?

It can. A fill valve under too much pressure may not shut off cleanly, so water can enter the overflow and produce continuous hissing. Periodic refilling usually means water is leaving the tank through a flush seal or another path. Worn flappers cause the same symptom, so check the flapper as well, but if new fill valves keep failing early, measure the house pressure.

Can I adjust the pressure-reducing valve myself?

Most regulators have an adjusting screw under a cap, and small turns with a gauge attached change the setting, but never raise the pressure above the lowest maximum printed on your appliances and fixtures. Old valves often do not respond or drift back, though, and turning a seized screw can damage the valve. If adjustment does not hold, investigate incoming pressure, thermal expansion and valve condition before choosing replacement.

Calling about another burst

A gauge reading, even a rough one, helps; share it when you call Alpha Plumbing and Sewer at (404) 409-4448 about another burst hose or supply line.