Best Grades | Must Pass | Latest Update | Correct Answers | 2024/ 2025
Backflow Prevention and Cross Connection
Control Questions and Correct Answers |
Latest Update
Relief valve discharges continuously. Problem May be caused by what 5 faults?
1. Faulty No. 1 check valve (F1CV)
2. Faulty No. 2 check valve with backpressure (F2CVwB)
3. Faulty relief valve (FRV)
4. Relief valve plugged sensing |ine(s) (RVPSL)
5. Relief Valve leaking diaphragm (RVLD)
Relief valve discharges intermittently. Problem May be caused by what 4 faults?
1. Properly working assembly with large pressure flu ctuations
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 RP Test 1, Relief Valve discharges after No. 2 shutoff valve is closed. What does this
indicate?
1. Normally indicates faulty No. 1 check valve
• Dirty or damaged disc
~ 1 ~ for inquiry mail me @ supergrades12@gmail.com
, Best Grades | Must Pass | Latest Update | Correct Answers | 2024/ 2025
• Dirty or damaged seat: or,
2. Leak through relief valve diaphragm
During RP Test 1, Relief valve would not open; differential on the field test kit would not drop.
What does this indicate?
1. Leaky No. 2 shutoff valve with flow through the assembly (L2SVwF)
During RP Test 1, Relief valve would not open, differential drops to zero. What does this
indicate?
1. Relief valve stuck closed due to corrosion or scale (RVSC).
2. Relief valve sensing line(s) plugged.
During RP Test 1, Relief valve opens too high (with sufficiently high No. 1 check reading).
What does this indicate?
1. Faulty relief valve
• Dirty or damaged disc
• Dirty or damaged seat
During RP Test 1 or 3, Check Valve No. 1 check reading too low (less than 5.0). What does
this indicate?
~ 1 ~ for inquiry mail me @ supergrades12@gmail.com
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Examify. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.49. You're not tied to anything after your purchase.
