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Flashcards in regulator types and proformance Deck (19)
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1

what's the proper location for the service regulator

on the service line before the meter

2

what's the proper location for the line pressure regulator

between the service and the applinace regulator

3

what's the proper location for the appliance regulator

at the appliance

4

what is the setpoint

the set or required outlet pressure

5

what does lockup mean

the pressure above the setpoint set to close the valve tight

6

what is meant by droop

the difference in pressure between the setpoint and the actual delievery pressure to the regulator full open pressure

7

cycling, higher lockup and bathtub stopper effect are oll symptoms caused by

an over sized orifice

8

how does a pilot tube improve the accuracy of the regulator

it senses when velocity is highest and therefore the pressure is lowest causing the diaghragm to open the valve more than is needed, boosting the pressure for a split second

9

what is the benifit associated with lever-type-direct-operated regulators

it has a greater mechanicle advantage and therefore a higher shut off force

10

define the term direct operated when describing regulators

the regulator opens and closes in direct response to down stream pressure

11

spring rate, diaphragm area, orifice size and pressure drop are all factors that effect

droop

12

the restricting elemeant of a regulator is

valve disc

13

increasing the spring force in an appliance regulator will

increase the manifold pressure

14

a pressure regulator is said to be the equalibrium when the

the opening force of the spring is equal to the closing force of the downstream pressure

15

the loading force in most regulators is provided by the

spring

16

droop pressure is

the outlet pressure which is lower than the setpoint pressure during flow conditions

17

if you put a regulator on backwards what is most likelt to happen

the regulator will close completely

18

when selecting the components of a service regulator, the required downstream pressure will be selected by

loading element

19

the purpose of the pilot tube in a regulator is

to keep downstream pressure closer to setpoint during flow conditions