Feed check valve is used in steam boilers to

1.	Feed check valve is used in steam boilers to
A.	check the water level in the boiler.
B.	check the feed water flow rate.
C.	feed high pressure water to boiler and guard against its backflow through it.
D.	none of these.
Answer» D. none of these.

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Feed check valve is used in steam boilers to

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