SIX7 PLUMBING
SIX7 Plumbing Backflow Preventer Installation Colombo
Compliance-driven and rare — nobody checks, nobody cares, until the notice arrives. We specify the device class by risk, fit it, test it, tag it with the date, and hand you the record.
The market truth: backflow demand in Colombo is low because enforcement is low. The engineering truth doesn't change with enforcement — a cross-connection between your line and anything non-potable (irrigation, fire lines, process water) can push contamination back into drinking water, and a plain check valve is not protection against it. Device class is decided by risk: RPZ, DC or PVB — we specify which and explain why in writing.
Every installed device is tested and tagged with the date, and the record goes in your compliance file. Annual retests slot into maintenance contracts so a missed date never becomes a failed inspection. If you're fitting because a notice arrived, we can usually schedule inside the notice window — call with the deadline.
60-Min ETA
We arrive fast. Most emergency calls are on-site within 60 minutes across Colombo and Western Province.
6-Month Shield
Every repair comes with a 6-month workmanship warranty. If our work fails, we come back at no cost.
Transparent Pricing
LKR 18,000 + 3,500/hr, + visit LKR 2,500. Rates published before dispatch. Pay only after approval.
T&Cs apply — /pricing/ & /disclaimer/
Common Backflow Preventer Installation Issues We Fix
Compliance notice received
If you've received a compliance notice, you need a rated backflow device installed and tested immediately.
New commercial fit-out
New commercial buildings need backflow protection by code. We specify the right device for your risk class.
Irrigation cross-connection
Irrigation lines crossing potable water require backflow protection. We install and test RPZ, DC, or PVB devices.
Fire line requirement
Fire suppression systems need backflow prevention. We install and certify the required device class.
How We Fix It
Diagnosis
We survey every cross-connection and test the device under line pressure before certifying anything.
Quote
A written quote names the device class, the test certificate and the labour - approved before we cut in.
Repair
Installation and certification together: new valves fitted, old devices removed, assembly set to code.
Verify
We pressure-test the assembly and hand you the test report the approval officer will ask for.
"Backflow work ends with testing and tagging on the same visit — a device that is installed but not certified has not been installed at all."
— SIX7 Plumbing, Mount Lavinia
Everything You Need To Know
Get answers to the most common questions about our Backflow Preventer Installation service.
Risk class decides — RPZ, DC or PVB; we specify and explain in writing.
Because a backflow event is your drinking water, and notices do arrive.
Available under maintenance contracts; tagged date tracks it for you.
Get A Quick Estimate
Tell us about your Backflow Preventer Installation issue for a fast, no-obligation quote.
Extend the Life of Your System
Prevention
- •If you have irrigation or a fire line, a backflow preventer is required by code. Don't skip it.
- •Annual retesting is required by law. We can put you on a maintenance contract so you never miss a date.
When To Call Us
- •A backflow incident can contaminate your entire water supply. Don't risk it - compliance is cheaper than liability.
- •Installed an RPZ in a commercial building in Colombo last month - the inspector signed off same day.