Which characteristic is an advantage of a butterfly valve as compared to a gate valve?
A
Precise control over cargo flow
B
Quick operation
C
No resistance to cargo flow when open
D
Less maintenance required
E
İlgili Sorular
Small oil spills on deck can be kept from going overboard by ________.The COASTAL DRILLER is loaded as shown in the Sample Load Form #1 (Rig Move). What is the new Longit...The revolving drum of a winch used to haul lines is called a __________.The sprocket teeth on a wildcat are known as the __________.The person in charge of a mobile offshore drilling unit must insure that _________________________.