Valves

Question 1

What is the term for a seal which metal parts do not move in relation to each other and are normally sealed by bolt heads, rivets, cover plate or plug etc…?

Answer 1

Static seal

Question 2

What type of coupling dampen torsion from the MDE preventing their propagation through to the reduction gear?

Answer 2

Torsion damping couplings

Question 3

How do you add lube to a lubricated plug valve?

Answer 3

Remove the lubricant set screw from the stem, insert stick of lube, replace set screw and force lube into stem

Question 4

What type of valve is used to control the flow of gas or liquid?

Answer 4

Solenoid valve

Question 5

How do you mount a swing pivot valve

Answer 5

Horizontal

Question 6

What type of fitting normally has 4 parts?

Answer 6

union

Question 7

What type of material is used to make pipe tubing grades 304 and 316

Answer 7

Stainless steel

Question 8

Which material is widely used as a sealing device?

Answer 8

Copper

Question 9

What type of connection should be used on copper water supply piping for shore units?

Answer 9

Solder

Question 10

What type of bourdon tube gauge is used to measure pressure above atmospheric pressure?

Answer 10

Duplex

Question 11

Before tightening bolts on a bonnet valve what position should the valve be in?

Answer 11

partially open

Question 12

How much can you adjust a thermal Expansion valve?

Answer 12

Never or as little as possible

Question 13

When packing a valve how should the gaps in the packing be arranged?

Answer 13

staggered

Question 14

A pipe’s actual inside diameter will vary depending on?

Answer 14

Wall thickness

Question 15

What direction is the stem on a valve installed?

Answer 15

up

Question 16

Swing pivot check valves are installed in what position?

Answer 16

horizontal

Question 17

The most common type of stop valves are?

Answer 17

Globe, gate, needle, AND PLUG COCKS

Question 18

Which valve is used when a straight line flow of fluid with minimal flow restrictions is required?

Answer 18

Gate valve

Question 19

Which valve is a quick acting and can be used for both positive shut off and some throttling

Answer 19

Butterfly

Question 20

What are two types of gate valves?

Answer 20

Rising stem and non rising stem

Question 21

A simple type of directional control valve is known as what type of valve?

Answer 21

Check valve

Question 22

Most common type of pressure control valve is a?

Answer 22

Relief valve