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37 Cards in this Set
- Front
- Back
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Sch 40 pipe my be used for pressure not exceeding |
125 psi |
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Every hose and hose fitting shall have a minimum pressure rating of? |
350 psi |
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Type L and G |
Outdoor underground service |
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A sleeve must be provided for piping or tubing passes through pavement in order to? |
Permit the free movement of the piping Allow venting of gasses to escape from underground leaks |
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Type L and G copper tubing may be used underground when? |
When Coates by extruded PVC or polyethylene resin |
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Rule of thumb How is the size of vent connector serving a single appliance determined |
It’s always the same size as the draft-hood outlet |
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Rule of thumb How is the size of a vent connector manifold serving more than one appliance determined? |
It is the combined area of all the outlets |
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Rule of thumb What is the minimum size of a chimney serving a single appliance |
One size smaller than the vent connector |
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Where should an air supply duct terminate |
Next to the burner of the largest input appliance |
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What is the maximum developed length of an air supply duct without increasing the size |
20’ or 6m |
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What is the minimum size of an opening used for fresh air supply |
4” |
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What is the minimum height of an air supply inlet above grade level? |
12” |
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If an appliance were connected to an approved chimney instead of a type B vent what size diameter would the chimney be |
6” |
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Can a defective section of gas piping or tubing be repaired by a qualified gasfitter |
No |
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What part of a propane tank may be field-welded |
Saddle plates or brackets |
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What must be attached to a pressure relief valve installed in a propane tank |
A lose-fitting rain cap to prevent rain and snow from entering the valve |
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What is the purpose of the internal safety control valve |
To shut off the flow of propane liquid in case of fire |
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When must a pressure gauge be installed on a propane tank |
Propane tanks with a capacity over 2000 USWG (7500L) |
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What may not be used to be determine the filling capacity of a propane tank |
A float gauge |
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What is the maximum size of opening in a spit valve not requiring an excess flow valve |
#54 orifice drill |
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What is the maximum filling density of a propane tank by volume |
80% of the water capacity |
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What is the maximum size of a container that can use a spit valve to assist in the filling process |
5 pounds (2.2 kg) propane capacity |
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What is the minimum distance between a pressure relief valve discharge and building opening below the discharge |
3’ (1m) |
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What is the minimum distance between a 1500 gallon (5800L) propane tank and a property line |
10’ (3m) |
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When can a hose be used to connect an unvented appliance? |
If it’s mobile or requires isolation from vibration |
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What is the minimum distance between 1000 gallon (3800L) propane tank and wood-farmed building |
10’ (3m) |
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What is the maximum number of supports on a propane tank |
2 pads or piers |
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What is the minimum required height above grade for a propane tank pad |
At least 3” (75mm) |
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When using the lifting lugs to move a propane tank, what is the permitted filling density |
5% water capacity |
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When should a corrugated metal connector not exceed 2’ (600mm) in length |
When connecting a suspended appliance or a decorative appliance |
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A 3” NPS horizontal gas line must be supported every |
15’ (4.6m) |
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A swing joint may not be installed where? |
A concealed location |
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When a piping system is purged outdoors, the purge point must not terminate closer than _____ from the building or air intake? |
10’ (3m) |
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The maximum range of a test gauge shall exceed the test pressure by ____ but not more than |
15% 300% |
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What is the main difference between a propane tank and a propane cylinder? |
The standards and approval agency responsible for certification |
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What is the minimum rated working pressure for a propane tank |
250 psi (1725 kPa) |
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How far must weeds and long dry grass or flammable materials be kept clear of a propane tank |
10’ (3m) |
