Bolt Mechanical Backflows
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A Backflows prevention device is installed to guard against possible cross-contamination of the public water system, it shall be listed for fire protection service.
Different devices at the connection between public water mains and private fire service mains are accepted by different backflow prevention laws.
Any or all of the following could be the device seen in the pit:
- Device for the reduced pressure zone (RPZ)
- Gravity check valve
- Vacuum breaker
- Detector check valve
- Double assembly check valve
The installation of these devices in a pit is prohibited by some backflow prevention rules.
The equipment or devices in the pit should always be authorized or indicated as required. The local or municipal water department’s requirements ought to be examined before the link is designed or installed.
Backflows protection devices installation should take pressure decrease into account.
All backflows assembly’s shall be USC Approved, in California. (See Tech Tip at end of page for link)
Services
The California Code of Regulations, Title 17, covers backflow prevention and cross-connection control.
This title regulates the Inspection, Testing and Maintenance of Backflows
In the event that a property is required by California Administrative Code, Title 17, to have backflow protection, the customer shall be responsible for:
(1) installing an approved backflow prevention assembly on the property;
and (2) making sure this assembly is routinely tested by a certified tester once a year.
Our Services:
- Testing at time of new installation
- Every year thereafter (Annually)
- After repairs due to a failed Test
*All backflow prevention assembly tested annually by a certified tester in accordance with State COR/Title 17 and the Local Authority Having Jurisdiction (Water Purveyor).
Repairs
Backflows repairs are crucial to prevent polluted water, that may include dangerous substances, including chemicals, pathogens, filth, and human waste, from mixing with pure water.
Common Repairs:
Broken check valves – There are two check valves in a backflow assembly, and both need to function properly. The first valve needs to open at a specific water pressure, and the second valve needs to prevent water from leaking past it.
Worn springs – Springs can wear out over time and need to be replaced.
Debris – Debris from repairs or installation can cause issues with the backflow assembly. For example, small pieces of pipe can get stuck between the checks or poppits, preventing the checks from sealing.
Incorrect relief valve opening point – If the opening point of the relief valve is too high or too low, the valve won’t work properly.
New Installations
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How Long Does A Backflow Last?
They usually last about 5-10 years.
Our Services:
- New Projects
- Expansions
- Upgrades
- Tenant Improvements
- Plan Design & Submittal
*Work performed per the NFPA 13 & 24 and the Local Authority Having Jurisdiction.
Document Control
Bolt Mechanical provides you with the required State Fire Marshal Certificates for your Fire and Life Safety systems.
If your Authority Having Jurisdiction (AHJ) contracts with The Compliance Engine, we send the required reports to them via our account.
Are you in a Los Angeles City Fire Chiefs Regulation 4 area? We submit those documents for you as well!
Access to your files on our cloud server at anytime, anywhere will keep your records straight and up-to-date whenever you need them.
Call Anytime!
Learn more about document Control
Backflow Prevention Tech Tip
The California Code of Regulations, Title 17
Backflows and Cross Connection
The California Code of Regulations, Title 17, covers backflow prevention and cross-connection control. This title includes regulations for:
Backflow prevention devices: Requires public water systems to use devices that have been field and laboratory tested by a recognized organization. The devices must also be installed in specific locations, such as at commercial, industrial, and multi-family facilities.
Backflow prevention assembly testing: Requires property owners to have their backflow prevention assembly tested annually by a certified tester.
Cross-connection control: Requires water purveyors to administer a program to prevent cross-connections, which are unprotected connections between a potable water system and a source of unapproved water.
Location of backflow preventers: Includes regulations for the location of backflow preventers.
Construction of backflow preventers: Includes regulations for the construction of backflow preventers
Authorized Assemblies for Preventing Backflows
Backflows prevention assemblies that have been authorized by the USC Foundation for Cross-Connection Control and Hydraulic Research are accepted by the water purveyor.
Backflow prevention assemblies that have been authorized are listed at http://fccchr.usc.edu/list.html.