Fischer Mechanical Installs and repairs gas pipes of all sizes and for all types of customers. The gas pipe is installed by qualified and licensed Pipefitters who have participated in an apprenticeship program. You can feel safe and comfortable knowing that a qualified and skilled Pipefitter trained in the appropriate field is install your gas pipes.
Items that require Gas Piping
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- Clothing Dryers (Residential & Commercial)
- Gas Fire Places
- Gas Log Starters
- Generators
- Hydronic boilers
- Industrial Equipment & Machinery
- Kitchen Appliances (Residential & Commercial)
- Pool Heaters
- Refrigerators
- Unit Heaters
- Warm Air Furnaces
What is Gas Pipe: Gas pipe is used to transport natural gas safely to the appliance and equipment that requires natural gas to power them. Gas piping can be made up of many different types of pipes.
Pressure Testing: Before any gas piping system is put into service and considered satisfactory, the piping shall be tested at a minimum pressure of 10 psig, and shall hold this pressure for a minimum of 1 hour. (Depending on the duration of the project Fischer Mechanical prefers to keep a pressure test on overnight.) Pipe carrying gas pressures greater than 2 psig, shall be tested at 1 ½ times the proposed working pressure. All equipment and appliances are isolated to keep a pressure test from possible causing damage to any equipment or appliances.
Types of Gas Pipe:
Galvanized or Black Schedule 40: These types of gas pipes should be installed inside and above ground. A lot of the time they will be painted yellow and labeled natural gas.
Copper Pipe or Tubing: Is used for many natural gas applications. Copper should not be used on gases that have hydrogen sulfide content. (Some of the gas utility companies in the West use this type of gas. Utility companies in the Midwest do not use natural gas that contains hydrogen sulfide contents.)
Plastic Piping: Plastic polyethylene pipe is to be used underground. It is permitted to be buried under patios, walkways, and driveways provide a minimum burial depth which is determined by the city or county code which has jurisdiction of the installation. Plastic pipe shall not be installed under any building or slab. A minimum number 18 insulated yellow copper tracer wire shall be installed and terminated above grade at each end of the pipe.
Corrugated Stainless Steel Tubing: Is used for gas applications provided it is part of a system where tubing and fittings have been tested and listed for gas piping systems.
Types of Gas Pipe Connections:
Thread Joints: All threaded joints and fittings shall not be larger than 4.”
Flanged Joints: All flanges shall comply with all gas codes and regulations. The pressure ratings shall be equal or exceed the requirements of the application.
Flared Joints: Shall be used only in systems constructed from nonferrous pipe or tubing. Applied where tests have demonstrated that the joint is suitable for the conditions.
Brazing Joints: Used where nonferrous pipe is required and the pipe has a melting point in excess of 1,000 degrees Fahrenheit.
Compression Mechanical Joints: All compression fittings shall comply with all gas codes and regulations. The pressure ratings shall be equal or exceed the requirements of the application.
Heat-Fusion Joints: Used on joining plastic pipe and fittings. Should be made in accordance with qualified procedures.
