Backflow Prevention And Cross Connection Control Questions And Answers 100% Verified A+ Guaranteed

Relief valve discharges intermittently. Problem May be caused by what 4 faults? {Ans: 1. Properly working assembly with large pressure fluctuations 2. No.1 check valve reading is close to RV opening point, with small line pressure fluctuation. 3. Water hammer 4. No. 1 check valve leak with intermittent flow through assembly.}During DC Test for either check valve, the Check valve reading above 5.0 psid psid. What does this indicate? {Ans: 1. Incorrect CV spring, possible RP spring.}During RP Test 1, Relief valve opens too high (with sufficiently high No. 1 check reading). What does this indicate? {Ans: 1. Faulty relief valve • Dirty or damaged disc • Dirty or damaged seat}During PVB Air Inlet Test, Air inlet valve does not open, and reading on field test kit will not drop. What does this indicate? {Ans: 1. Leaky No. 1 shutoff valve 2. Parallel installation with leaky No. 2 shutoff valve}During RP Test 1, Relief Valve discharges after No. 2 shutoff valve is closed. What does this indicate? {Ans: 1. Normally indicates faulty No. 1 check valve • Dirty or damaged disc • Dirty or damaged seat: or, 2. Leak through relief valve diaphragm}During RP Test