Register
The only blackflow prevention device approved for all application is the? a. Double check valve b. Triple check valve c. Reduced pressure zone device d. Pressure vacuum breaker
101k views
0 votes
The only blackflow prevention device approved for all application is the?

a. Double check valve
b. Triple check valve
c. Reduced pressure zone device
d. Pressure vacuum breaker

User Fabfas
by
7.5k points

1 Answer

4 votes

Answer:

c

Step-by-step explanation:

because abd are not the ansersers

User Jabclab
by
8.1k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.1m answers

Other Questions

A piston-cylinder device fitted with stops in the cylinder walls contains 2.1 kg of water initially at 150 kPa and 30 °C. Heat is transferred to the system until the final temperature reaches 250 °C. The
4. Which of the following is the first thing you should do when attempting to park? A. Securing the parking spot by standing in it B. Turning on your hazard lights C. Confirming the space can fit your
The bulk modulus of a fluid if it undergoes a 1% change in volume when subjected to a pressure change of 10,000 psi is (a) 0.01 psi (b) 0.001 psi (c) 0.00001 psi (d) 0.000001 psi (e) none of these
In solid motors, HTPB and PBAN are two common types of plasticizers. a) True b) False
Adding moisture is the ONLY way to obtain saturated air from unsaturated air. a)-True b) False
Link Copied!