the boiler. A non-lifting injector must be placed below the level of the
water in the tank so the water will flow to it by gravity.

51. Q. Will an injector work with a leak between the injector and tank?
Why? Will it prime?

A. A lifting injector will not work if the leak is bad. It will not
prime because the air admitted through the leak destroys the vacuum
necessary to raise the water to the injector level. A non-lifting
injector will work, as the water will escape from the pipe instead of
air being drawn into it as with the lifting injector.

52. Q. If it primes well, but breaks when the steam is turned on wide,
where would you look for the trouble?

A. Insufficient water supply due to tank valve partly closed, strainer
stopped up or tank hose kinked, injector tubes out of line, limed up, or
delivery tube cut, or wet steam from the throttle.

53. Q. If it would not prime, where would you expect to find the
trouble?

A. Insufficient water supply, priming valve out of order, or with the
lifting injector the trouble might be caused by a leak between the
injector and tank.

54. Q. Will an injector prime if the boiler check leaks badly or if it
is stuck up? If the injector throttle leaks badly?

A. No.