Boilers classified as low-pressure steam boilers have a maximum operating pressure of _____.
a. 5 psi
b. 15 psi
c. 50 psi
d. 100 psi
Question 2
A device that can protect steam heating coils from internal collapse due to a sudden drop in pressure is the
_____.
a. condensate tank
b. control valve
c. pressuretrol
d. vacuum breaker