Valve Types

Question 1

The most common type of meter valve used on eversource gas facilities is a ______.

Answer 1

Plug Valve

Question 2

A valve with a cylindrical or tapered opening controlling gas flow is called what?

Answer 2

Plug Valve

Question 3

Plug valves are considered restricted port valves TRUE or FALSE ?

Answer 3

TRUE

Question 4

Plug valves require what to seal and move?

Answer 4

Lubrication, Grease

Question 5

Plug valves are usually require a ______ turn to open or close, however gear operated valves require multiple turns to achieve full travel.

Answer 5

Quarter

Question 6

A valve with a round plug controlling the flow of gas is called what?

Answer 6

Ball valve

Question 7

Ball valves are classified as ______ valves. However full port ones do exist.

Answer 7

Restricted port

Question 8

Ball valves are made of either ______ or _____.

Answer 8

Steel, Plastic

Question 9

Ball valves require a _____ turn to open or close.

Answer 9

Quarter

Question 10

A ______ valve has the best seating of all the valves, at the highest cost.

Answer 10

Ball

Question 11

STEEL ball valves require ____ not greasing for maintenance.

Answer 11

Flushing

Question 12

PLASTIC ball valves are neither flushed or greased for maintenance TRUE or FALSE?

Answer 12

TRUE

Question 13

A double block valve has multidirectional seals on both sides of the valve body TRUE or FALSE?

Answer 13

TRUE

Question 14

A Low cost ball valve that’s used in gas distribution and customer meter fits is called what?

Answer 14

Non-serviceable ball valve

Question 15

A valve designed for a long, leak-free life is called a what?

Answer 15

Non-serviceable ball valve

Question 16

A valve with a welded body and no service fittings is called what?

Answer 16

Non-serviceable ball valve

Question 17

A valve with a disk that turns 90 degrees inside the body to control the flow of gas is called what?

Answer 17

Butterfly valve

Question 18

Butterfly valves are always restricted port TRUE or FALSE?

Answer 18

TRUE

Question 19

Butterfly valves are ______ turn, typically requiring left or counterclockwise turns to open the valve.

Answer 19

Multi

Question 20

Butterfly valves contain service ports for grease or sealant TRUE or FALSE?

Answer 20

FALSE

Question 21

Butterfly Valves provide good and positive gas service shut-off TRUE or FALSE?

Answer 21

FALSE

Question 22

______ valves operate by raising and lowering a horizontal disc on and off a seat.

Answer 22

Globe

Question 23

In ____ valves gas flow changes direction as it passes through the valve.

Answer 23

Globe

Question 24

Globe valves are considered restrictive port valves TRUE or FALSE?

Answer 24

TRUE

Question 25

Are Globe valves multi or quarter turn valves?

Answer 25

Multi

Question 26

_____ valves operate by raising and lowering a vertical metal disc, across the opening of a pipe.

Answer 26

Gate

Question 27

_____ valves have seats on both sides, and glas flows straight through the valve.

Answer 27

Gate

Question 28

Gate valves are considered full port valves TRUE or FALSE?

Answer 28

TRUE

Question 29

Gate valves can be used for throttling, TRUE or FALSE?

Answer 29

FALSE

Question 30

Gate valves are have a service port for the seat and stem, TRUE or FALSE

Answer 30

FALSE

Question 31

Check valves are designed for ______.

Answer 31

Metering

Question 32

______ valves operate by allowing gas flow to swing the valve open, and if the gas flow reverses direction, the valve is forced closed.

Answer 32

Check

Question 33

Check valves include _____, _____, and _____ type designs.

Answer 33

- Swing - Lift - Ball

Question 34

_________ valves are designed to automatically restrict or stop glas flow when certain limits are reached, and provide leak protection for customer piping.

Answer 34

Excess Flow

Question 35

Injecting sealant into a valve, provides what 2 benefits?

Answer 35

- Bubble tight shut off - Lubrication of moving parts

Question 36

Who must be notified prior to any valve maintenance?

Answer 36

Gas Control

Question 37

A grease gun is the preferred method of of sealing and lubricating a valve, TRUE or FALSE ?

Answer 37

TRUE