Backflow Study guides, Class notes & Summaries

A double check valve assembly is installed 12 above the floor for? - Answer-Maintenance A low hazard Backflow preventer is a? - Answer-Double Check valve assembly A field test report for a double check will include the manufacturer name, model, size and ?? - Answer-Serial number Double check valve assembly components are?? - Answer-Independently acting A double check valve assembly hydraulic use is?? - Answer-Continuous A detector assembly contains a device of equal? - Answer-Prot...

When testing that air inlet in a pressure vacuum breaker, the bleed valve assembly for shut off valve leakage is installed on: - Answer-(B) The number 1test cock. When testing the air inlet and a pressure vacuum breaker, if the high side believe needle valve must be open more than a quarter turn, to indicates: - Answer-(C) A leaking number 1 shut off valve. When testing the air inlet and in a pressure vacuum breaker, if the high side bleed needle valve is open 1/4 turn and gage drops to ze...

Double Check Valve Assembly - Answer-A testable mechanical device consisting of two independently operating, spring-loaded check valves, four test cocks, and two full port shut off valves the purpose of an ASSE 1018 trap primer is to - Answer-maintain a trap seal a laboratory faucet vacuum breaker must contain - Answer-two independently acting check valves ASSE 1060 - Answer-outdoor enclosures standard, freeze protective enclosures must provide protection to a remedies of -30 f devic...

1) Backflow is the undesirable reversal of flow of water or other substances through a cross connection into the public water system or consumer's: - Answer-C. Public water system or consumer's portable water system 2) An approved airgap (AG) is a physical separation between the free-flowing end of a: - Answer-D. Potable water supply pipe line in the overflow rim of an open or non-pressurized receiving vessel 3) And indirect cross-connection is one that is subject to what type of backflo...

What is the pressure at the base of a 100 foot high standpipe filled with water? - Answer-43.3 psi A column of water exerts pressure at the bottom of a column due to - Answer-Weight of the water What is the primary consideration when deciding whether to install a reduced pressure or a double valve assembly? - Answer-Degree of hazard A cross-connection is an actual or potential connection that could allow backflow to occur between a potable water system and a piping system that contains ...

While field testing the check valve of a pressure vacuum breaker, water continues to flow from the # 2 test cock . How do you proceed ? - Answer-Open the bleed off valve until the flow slows to a slight drip. Well field testing the first check valve of a double check valve assembly, water continues to flow from the site tube. How do you proceed? - Answer-Observe reading on gauge (first step). Open high side of bleed valve (second step). While field testing the check valve of a spill resist...

Backflow exam review questions and rationale answers 2024

BACKFLOW TEST EXAM 2024 WITH 100% CORRECT ANSWERS If an RPBA contiunually drips or drains under full flow conditions - correct answer The #2 check valve is fouled When a residential property has a backflow-prevention device/assembly installed on the service line the best means to control thermal expansion is with a - correct answer Thermal expansion tank According to the Nebraska regulations what is the minimum acceptable air gap for a 2" pipe located 1" from the wall - correct answ...

BACKFLOW PRACTICE EXAM 2024 1) Backflow is the undesirable reversal of flow of water or other substances through a cross connection into the public water system or consumer's: - correct answer C. Public water system or consumer's portable water system 2) An approved airgap (AG) is a physical separation between the free-flowing end of a: - correct answer D. Potable water supply pipe line in the overflow rim of an open or non-pressurized receiving vessel 3) And indirect cross-connecti...

BACKFLOW EXAM STUDY GUIDE