4.1 module 3

Do not adjust a regulator until you have been trained how to do so.

Do not attempt to change the setting of a regulator relief valve.

Effective , ____NFPA 58 prohibits the installation of single-stage regulators in residential central heating systems.

Which of the following is not a factor to consider when selecting a regulator?

Vapor meters are not affected by both the gas pressure inside the meter and the atmospheric pressure on the outside.

Natural gas has more btus per cubic foot than propane

Btu/hr demand of the appliances will not affect the piping layout, size and number of gas piping entry points required.

The delivery pressure of the first-stage regulators is set at the factory and is typically __________.

2nd stage regularos have a flow capacity to meet the total gas demand of all the appliances connected to the regulator.

When 2+are installed in the same location, NFPA 54 requires that each meter be tagged to indicate the specific customer.

Most propane appliances require an input pressure of around _____" w.c., or about ½ lb of pressure.

Most propane vapor meters are designed to operate with an inlet pressure of ________

For residential & small commercial propane applications, system delivery for appliance inlet pressure typically _____

Vapor meters have ______ formed by a ____ diaphragm.

When planning an installation, the meter must be plumb and level in all directions.

The regulator should be constructed of materials that are compatible with LP-gas service and the external environment.

what is a factor to consider when designing a second-stage regulator system?

To select the appropriate 2nd stage regulator, you will need to consider

___________ are pre-assembled units designed to connect gas meters to supply piping.

NFPA 58 States :The relief valve for a single-stage regulator may be the same as for a second-stage regulator.

To prevent regulator freeze-up due to vent blockage the regulator should be mounted so that the ___

Natural gas meters are more widely used than propane meters.

Regulator selection is based on _______________.

The inlet pressure for a first-stage regulator is determined by the

_____ show the capacity of a regulator at different delivery pressures given the factory setting for outlet pressure.

When sizing vapor meters for ½ lb systems, select the meter according to its capacity at 2" w.c. pressure drop.

When reading the dials of a circular index, start with