Northern California's Trusted Source for Backflow Prevention Parts & Equipment
Authorized dealer for Watts, Febco, Wilkins, Apollo, Ames & Deringer — plus Sub Zero Covers freeze bags. Fast shipping from Rocklin, CA.
Why Contractors Trust The Backflow Depot
Backflow Parts & Equipment
From repair kits and individual components to freeze bags and test equipment — we stock everything backflow professionals need.
Freeze Bags
Authorized dealer for Sub Zero Covers freeze bags — made in the USA with premium materials. Standard sizes in stock, custom sizes available to order.
Shop OnlineRepair Kits
Complete backflow repair kits for all major manufacturers. Watts, Febco, Wilkins, Apollo, Ames, and Deringer.
Shop OnlineParts & Components
Individual checks, seats, springs, o-rings, and gaskets. Everything you need to rebuild any backflow assembly.
Shop OnlineTest Equipment
Backflow test kits, gauges, and accessories from trusted manufacturers. Keep your certifications current.
Shop OnlineRelief Valves
Pressure relief valves and components for reduced pressure zone assemblies and related applications.
Shop OnlineCheck Valves & Seats
Replacement check valves, rubber kits, and seat assemblies for double check and RPZ backflow preventers.
Shop OnlineAccessories & Tools
Specialty tools, lubricants, fittings, and accessories for backflow installation, testing, and repair.
Shop OnlineCages & Enclosures
Protective enclosures, security cages, and covers that shield backflow assemblies from vandalism, weather, and freezing.
Shop Online
Freeze Bags — Made in the USA
We're an authorized dealer for Sub Zero Covers — premium, USA-made freeze bags built to withstand the rigors of professional backflow work. Standard sizes are stocked and ready to ship, with custom sizes available to order.
- Standard sizes for every backflow assembly
- Custom sizes available to order
- Made in the USA with premium materials
- Heavy-duty construction for repeated use
- Fast shipping on in-stock sizes
Not Sure What Size Freeze Bag You Need?
Snap a photo of your backflow device tag and we'll match you to the exact freeze bag — no measuring, no guesswork.
1. Snap Your Tag
Take a photo of the metal tag on your backflow device
2. We Read It
We identify the manufacturer, model, and size from your photo
3. Get Matched
We send you straight to the right freeze bag — ready to buy
Free to use. Takes 30 seconds. No account needed.
Backflow Device Rentals
Assembly out for repair or stuck on backorder? Rent a working backflow preventer from us and keep your water service compliant and running — one of the only rental programs of its kind in Northern California.
- 2″ to 12″ devices in stock
- Hard-to-find sizes, available to rent
- Local pickup in Rocklin, CA
- No long-term contracts
Parts, Sales & Rentals
Based in Rocklin, CA, The Backflow Depot supplies backflow professionals across 16 counties in Northern California — parts, freeze bags, and rental devices, backed by people who work in the field every day.
Authorized Dealer for Leading Brands
Ready to get the parts you need? Shop freeze bags, repair parts, and more.