Gas line work belongs in a narrow category of plumbing tasks where there is no acceptable shortcut. A fitting that isn't fully threaded, a connector that was bent during installation, or a repair that skips the post-work manometer pressure test can produce a leak that's invisible and odorless until conditions for ignition are met. Masters Plumbing Service's certified gas plumbers in Delavan, WI use combustible gas detectors at every connection point after every repair โ and every job ends with a documented manometer pressure test before gas is restored to any line we've worked on.
๐ Call +1-855-718-1500 โ Certified Gas Plumbers
If a contractor quotes gas line work without mentioning manometer pressure testing or combustible gas detection at completion, that's a gap in their safety protocol that you should ask about before agreeing to any work.
Gas plumbing in WI requires specific certifications beyond a standard plumbing license. Every technician we dispatch for gas work holds an active state certification for gas line installation and repair. We can provide license numbers and certification documentation before any work begins โ and we encourage you to verify them with the WI licensing board.
After any gas line repair, installation, or reconnection, we pass a calibrated combustible gas detector โ sensitive to natural gas and propane at concentrations far below the lower explosive limit โ over every fitting, joint, and appliance connection we worked on. A clean detector pass at every point is required before the job is closed out.
A manometer measures gas line pressure precisely over a timed hold period. After any repair or new installation, we isolate the segment, pressurize to test pressure, connect the manometer, and hold for the required duration. Zero pressure drop confirms a leak-free installation. We document the test result โ pressure, hold time, and pass/fail โ and provide you with a copy.
A permit isn't just a bureaucratic step โ it's an independent safety check. The inspector confirms our work meets the applicable code. That second set of eyes protects you, and we welcome it.
Every job follows the same detection and pressure-testing standard regardless of scope.
Once the utility has confirmed the street supply is shut and the structure has ventilated, we locate the leak, make the repair, detector-test every connection, perform the manometer pressure test, and coordinate with the utility for gas restoration.
Moving a gas range, installing a new gas dryer, connecting a gas fireplace insert, or hooking up a tankless water heater โ each requires a code-compliant appliance connector (rated flexible connector or rigid pipe), correct shutoff valve accessible without moving the appliance, and a post-connection leak test and pressure test on the affected segment.
Adding a gas barbecue outlet, running gas to a new range or cooktop, extending gas to an outdoor kitchen or pool heater, or adding a gas stub for a whole-house generator โ all require a new gas line run sized correctly for the BTU demand of the connected appliances and the existing line's supply pressure.
We pressure-test the full distribution system or individual branches per client request, provide a written test result, and report any pressure drop with our best assessment of where the loss is occurring.
Corrugated stainless steel tubing (CSST) is the flexible gas piping used in most newer Delavan homes โ it's faster to install than rigid black iron and routes easily through framing. However, CSST requires specific installation requirements: proper fittings, correct bonding to the electrical grounding system, and protection at penetration points to prevent abrasion damage.
{Propane systems used in areas of Delavan, WI without natural gas service have specific considerations compared to natural gas: different line pressures at the regulator (propane distribution pressure varies by system design), different BTU content per cubic foot, and propane's behavior of settling low (it's heavier than air, so propane accumulates at floor level rather than rising to ceilings).|We service propane supply lines from the tank to the structure, appliance connections, regulator function checks, and leak detection using detectors calibrated for propane's lower explosive limit.}
Every step exists because gas work without it is unsafe, regardless of how minor the job appears.
Active gas smell: stay out of the building, call your utility to shut street supply, then call us. Non-emergency gas work (new runs, appliance connections, pressure testing): call to schedule โ we confirm certification documentation and permit requirements for your specific job scope before arrival.
For new installation work, we assess the existing supply line pressure, measure the BTU demand of the new appliances, and calculate the required pipe diameter for the new run before quoting.
For leak repairs, the gas remains off on the affected line until the repair is complete, the detector passes every joint, and the manometer test confirms a leak-free system.
The permit inspection follows, and we provide you with the signed inspection record. The job is not complete until that documentation is in your hands.

Faint gas smell near the furnace room โ not strong, but unmistakable. Called Masters Plumbing Service after the utility came out and said the issue was on the customer side of the meter. Their tech arrived with a detector calibrated for natural gas, walked the full accessible distribution system, and pinpointed the leak to a union fitting on the furnace supply line โ a fitting that had been vibrating loose from years of furnace cycling. Repaired the union, re-tested with detector and manometer, gas restored. Written documentation of the test result for my records.
I bought an older home in Delavan that had a gas dryer stub but I'm switching to a gas range. Masters Plumbing Service traced the existing gas distribution, confirmed the supply capacity was adequate, extended the run to the kitchen with correctly sized pipe, capped the dryer stub, and provided a full manometer test on the entire modified system. Very thorough work โ documentation exactly as described upfront.
Commercial kitchen remodel required moving two gas lines and adding a new connection for a salamander broiler. Masters Plumbing Service sized the header and branch lines for the total connected BTU load, pulled the required commercial permit, executed the work, and provided a full system pressure test documentation for the health department inspection file. Clean work, inspected and passed first visit.

Our gas plumbers hold active WI certifications for natural gas and propane, and we carry combustible gas detectors and digital manometers on every gas-call vehicle.

Active gas emergency: leave the building, call your utility, then call +1-855-718-1500.
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