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28 Cards in this Set

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WHAT TYPES OF VALVES ARE REQUIRED ON BACK-FLOW DEVICES?

RESILIENT - able to return to an original shape after being pulled, stretched, pressed, bent, etc

CONTRACTORS NEED WHAT KIND OF CERTIFICATE?

GENERAL BUILDING , LIMITED

WHAT TYPE OF CROSS-CONNECTION IS A HOSE IN A POOL?

INDIRECT

YOU CAN YOU BUILD YOUR OWN BACK-FLOW ASSEMBLY?

FALSE

NOMINAL PIPE SIZE MEANS WHAT?

AVERAGE, ROUNDED TO THE NEAREST SIZE

WHAT CAUSES BACK SIPHONAGE?

ATMOSPHERIC PRESSURE

DIFFERENCE BETWEEN CONTAMINATED WATER AND POLLUTED WATER?

CONTAMINATED IS HAZARDOUS


POLLUTED IS SAFE BUT DIRTY

WHAT CAUSES BACK PRESSURE?

HEAD PRESSURE, STEAM PRESSURE,

USED WATER DEFINITION

WATER IN SERVICE

CONTAMINATED WATER

DISEASE CAUSING


SEWAGE, IRRIGATION,

AIR GAP MUST BE AT LEAST HOW HIGH ABOVE WATER LEVEL?

6"

ANTI-SIPHON VALVE CAN OPERATE HOW MANY STATIONS?

1

FLUSH-O-METER SHOULD BE AT LEAST HOW MANY INCHES ABOVE WATER LEVEL?


HOW MANY ABOVE CRITICAL LEVEL/

6"


1"

FAUCET WITH HOSE THREADS NEEDS WHICH DEVICES?

AVB

A CHEMICAL DISPENSER CAN PLACED ON WHICH SIDE OF A AVB?

AFTER/ DOWNSTREAM

DOUBLE CHECK PROTECTS AGAINST WHAT?


WHAT ARE BOTH THE SPRING RATINGS

BACK PRESSURE AND POLLUTANT ONLY


1 &1

WHEN DOES A DEVICE NEED TO BE TESTED?

AFTER INSTALLATION AND ONCE A YEAR

WHAT DOES THE PVB PROTECT AGAINST?

BACK SIPHONAGE AND POLLUTANTS

WHAT CHARACTERISTICS DOES A PVB HAVE THAT A AVB DOESN'T.

TWO TEST COCKS AND A SHUT OFF VALVE DOWN STREAM

SVB CHARACTERISTICS

1 TEST COCK , 1 VENT VALVE , PROTECTS AGAINST BACK SIPHONAGE ONLY FOR POLLUTION AND contamination.

WHAT ARE THE SPRING RATINGS FOR ALL THE RP'S SPRINGS INCLUDING THE RELIEF VALVE

1ST) 5


2ND) 1


RELIEF) 2

pressure vacuum breaker (PVB)


Back siphonage against pollution and contamination

DOUBLE CHECK
Back siphonage and pressure against pollution
only


Requires 12" clearance at bottom

Atmospheric Vacuum Breaker


Back siphonage against both pollutants and contaminants


No valve down stream

RP - 2 independently acting loaded check valves


Protects against everything


Types of protection chart

Colors on a potable water service/ distribution pipe?

Green with white lettering

Colors on a non potable service / distribution pipe?

Yellow with black lettering