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47 Cards in this Set
- Front
- Back
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What material is gas piping or tubing system be constructed of |
Steel copper or plastic |
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What needs to be done with piping tubing and fittings that are meant to be reused |
Cleaned inspected and ascertained to be equivalent to new material |
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A fitting used with steel pipe shall be |
Either malleable iron or Steel |
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Schedule 40 steel pipe is good for gas up to and including what pressure |
125 PSIG |
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What schedule pipe will be used with operating pressures exceeding 125 PSIG and for all liquid piping |
Schedule 80 |
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Types of copper tubing that can be used for gas systems |
Type g k or l |
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Copper tubing used for underground gas supply |
Type L or G externally coated or type K |
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Minimum working pressure for every hose or hose fitting |
350 PSIG |
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Can you use plastic pipe in a liquid propane system |
No |
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Where can plastic piping or tubing be used for gas lines |
Outdoors underground service |
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Plastic pipe shall not be used for the first how many feet of piping Downstream of a vaporizer in a propane application |
10 feet |
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Can csst tubing be used as a gas connector |
No |
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Maximum allowable pressure drop on a low-pressure natural gas line |
1 inch water column |
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Maximum allowable pressure drop on a high pressure gas system |
50% of the operating pressure |
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Minimum schedule pipe used four sizes less than NPS 1/2 inch |
Schedule 80 |
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Minimum size of gas piping that can be concealed |
1/2 inch |
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Maximum spacing of supports for gas piping half inch or less |
6 ft |
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Maximum spacing of supports for gas piping 3/4 inch to 1 inch in diameter |
8 feet |
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Maximum spacing of supports on gas piping 1 and 1/4 inch to 2 and 1/2 inch in diameter |
10 feet |
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Maximum spacing of supports for gas piping 3 to 4 in in diameter |
15 ft |
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What size of piping and larger shall be welded |
2 and a 1/2 in |
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How are joints in seamless Copper, Brass or stainless steel tubing be made by |
Flared Brazed Compression |
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How far past a finished ceiling or finished wall must an unthreaded portion of a piping Outlet extend |
1 in |
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How far through a floor must an unthreaded portion of a piping |
2 inch |
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How is a dirt pocket-sized |
Minimum 3 in deep or equal to the diameter of the pipe it serves whichever is greater and the diameter of the pocket she'll be either to in or equal to the diameter of the piping it serves whichever is less |
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Where should a drip pocket be installed |
At all points in a piping system where condensation can collect, such as points where piping is exposed to either wide ranges or sudden changes in temperature |
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Can you Nest bushings |
No |
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Can a union or swing joint be installed where piping is concealed |
No |
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Smallest size piping that can be used Underground |
Half inch |
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Minimum bury depth of gas line |
15 in |
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Minimum bury depth of a gas line under a commercial driveway or parking lot |
24 in |
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What needs to be installed with plastic piping Underground |
A tracing wire or other electronically detectable Tracing media |
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Tubing systems for residential building shall be identified in intervals that shall not exceed how many feet |
6 feet |
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What kind of manual shut-off valves are allowed to be installed on gas lines |
Plug ball or eccentric type |
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In either the drop or Riser as close as possible to the valve train of a commercial and industrial type Appliance |
A readily accessible manual shut-off valve for each Appliance shall be installed here |
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In either the drop or Riser of a residential Appliance |
A readily accessible manual shut-off valve for each Appliance shall be installed here |
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In the horizontal piping between the drop or Riser and the appliance valvetrain, it may be the same size as the appliance connection would located within two feet of the appliance |
A readily accessible manual shut-off valve for each Appliance shall be installed here |
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Within a maximum of 50 ft of the individual residential appliance that it serves and she'll be identified as to the appliance that serves by means of either a tag or clear legible sign displayed in a permanent manner adjacent to the valve |
A readily accessible manual shut-off valve for each Appliance shall be installed here |
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Piping or tubing that extends from one building to another show have shut-off valves located where |
At the exit point of the first and at the entry of the next |
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Can you use a gas hose connection to a vented Appliance |
No, except for an infrared tube heater |
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When can a gas hose be used with an unvented appliance |
When such an appliance is mobile during operation, is portable, or requires isolation from vibration |
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When using a gas hose For permanent installation, it shall not exceed how many feet in length and shall neither extend from one room to another or passed through any wall partition or floor |
10 ft |
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When using a gas hose For a portable Appliance, it shall not exceed how many feet unless otherwise stated in the appliance standard |
30 ft |
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When using a gas hose for can I clean a construction heater it shall be neither less than how many feet nor longer than how many feet in total |
Less than 15 or more than 75 feet |
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Max temperature rating for a gas hose |
125° Fahrenheit |
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May be used to connect an appliance in commercial, industrial, or process applications where vibration, expansion, contraction, or other circumstances of an appliance installation warrant its use |
Where can a metallic gas hose be used |
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Can you install a metallic gas hose in a concealed location |
No |
