Backflow Prevention and Cross Connection Control Questions and Answers | Latest Update | 2024/2025 | Graded A+

Backflow Prevention and Cross Connection Control Questions and Answers | Latest Update | 2024/2025 | Graded A+ During DC Test for either check valve, the Check valve is reading below 1.0 psid. What does this indicate? 1. Dirty or damaged check disc 2. Dirty or damaged check seat 3. Damaged spring During DC Test for either check valve, the Check valve reading above 5.0 psid psid. What does this indicate? 1. Incorrect CV spring, possible RP spring. During PVB Air Inlet Test, Air inlet valve does not open, and reading on field test kit will not drop. What does this indicate? 1. Leaky No. 1 shutoff valve 2. Parallel installation with leaky No. 2 shutoff valve During PVB Air Inlet Test, Air inlet valve does not open, as field test kit drops to 0.0 psid. What does this indicate? 1. Air inlet disc stuck to seat 2. Broken or missing air inlet spring 3."O|d style" pressure vacuum breaker (non- loaded air inlet valve) 4. It is an SVB (See Book 9.5) During PVB Air Inlet Test, Air inlet valve opens below 1.0 psid, and reading on field test kit will not drop. What does this indicate? 1. Dirty or damaged air inlet valve disc 2. Scale buildup on seat 3. Damaged spring During PVB Check Valve Closing Point Test (Test No. 2), water runs continuously from test cock No. 2. What does this indicate? 1. Leaky No. 1 shutoff valve During PVB Check Valve Test, Check valve reading below 1.0 psid. What does this indicate? 1. Dirty or damaged check valve disc 2. Dirty or damaged seat 3. Damaged spring During RP Test 1 or 3, Check Valve No. 1 check reading too low (less than 5.0). What does this indicate? 1. Dirty or damaged disc 2. Dirty or damaged seat 3. Guide members hanging up 4. Damaged spring