Chapter 12 Basic Fittings for Hot Water Boilers

Question 1

The scale on the dial of a pressure gauge shall have a maximum graduation of _____ times the maximum allowable working pressure.

a) 2
b) 3
c) 2.5
d) 1.5

Answer 1

b) 3

Question 2

Where should the pressure relief valve be installed in a hot water system?

Answer 2

Anywhere reasonably close to the tank

Question 3

The pressure relief valve on a hot water boiler should be installed:

a) On the return line
b) Horizontally for easier discharge
c) Close to the expansion tank
d) Vertically at the top of the boiler

Answer 3

d) Vertically at the top of the boiler

Question 4

The recommended type of valve to be used when the stop valve is over 51 mm in pipe size is a:

a) gate valve
b) outside screw and yoke valve
c) glove valve
d) ball valve

Answer 4

b) outside screw and yoke valve