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The breather hole of a meter regulator is provided:

• To allow the diaphragm to move up and down.

• To compensate for changes in atmospheric pressure.

• To allow a vent should 'lock up' occur.

• To allow a vent for when inlet pressure is too high.

Standing pressure is that pressure measured when:

(a)  

A gas escape from the breather hole of a regulator indicates:

• Faulty spring.

• Bent spindle.

• Split diaphragm.

• Worn valve seating.

To increase the outlet pressure of a meter regulator you must:

• Increase the pressure on the spring.

• Decrease the pressure on the spring

• Meter regulator is factory set.

• Acquire specialist tools from the manufacturer.

The working pressure at a meter regulator must be measured:

• With all appliances turned off.

• With appliances in operation.

• Prior to a tightness test.

• With only pilot lights in operation.

What is medium pressure gas?

• Above 2bar.

• Below 75mbar.

• The same as low pressure.

• Above 75mb but below 2 Bar.

Governor 'Lock up' will occur:

• When all appliance and pilots are turned off.

• When there is a gas escape on the supply.

• When the inlet pressure to the regulator is greater than 50mb.

• When the supply to the regulator has been turned off.

Domestic medium to low pressure meter installations need to be located outside of the property in what?

• A surface mounted meter box.

• A built in (flush mounted) meter box.

• A purpose built housing.

• All of the above.

The working pressure of a domestic meter regulator should be set at:

• 20mb ^+/_2mb

• 21mb ^+/_2mb

• 25mb ^+/_2mb

• Is dependent upon the number of appliances fitted.