Professional-Grade Backflow Prevention for Safe Drinking Water.
The Wilkins Brass Double Check Valve is a heavy-duty, commercial-grade backflow preventer engineered to provide absolute protection for your potable water supply. Whether you are installing a large agricultural mainline or a residential landscape system, this valve prevents contaminated irrigation water, fertilizers, and soil runoff from being drawn backward into the clean drinking water lines through backsiphonage or backpressure.
Manufactured from high-quality, lead-free brass to meet strict California requirements and national safety codes, this assembly features two independent, upward-facing check valves. This dual fail-safe design guarantees that if one valve ever becomes fouled by debris, the second check remains securely sealed. Its compact, accessible design is intended to be paired with PVC fittings and easily fits inside a standard municipal valve box, making routine maintenance and inspection simple.
- Dual Independent Checks: Features two fail-safe check valves working in sequence to provide maximum security against both backsiphonage and backflow.
- Lead-Free Brass Construction: Cast from heavy-duty, lead-free brass to ensure compliance with strict environmental regulations and guarantee safe potable water.
- Easy Maintenance: Both check valves face upwards beneath secure covers, allowing for quick internal access and cleaning without removing the entire valve body from the line.
- Compact Footprint: Designed to fit perfectly inside standard municipal and residential irrigation valve boxes.
Ensure compatibility with your current plumbing setup.
| Specification | Details |
|---|---|
| Product Type | Double Check Valve Assembly (Backflow Preventer) |
| Material | Lead-Free Heavy Duty Brass |
| Inlet / Outlet Connection | Female Pipe Thread (FPT) |
| Maximum Operating Pressure | 175 PSI |
| Brand | Wilkins (Zurn) |
Proper installation is crucial for the safety of your water supply. Always consult local municipal codes before installing backflow preventers.
Step 1: Apply Thread Sealant
Wrap thread sealant tape 3 to 4 times around the Male Pipe Threads (MPT) of the fittings or pipes you will be connecting to the valve’s inlet and outlet ports.
Step 2: Note the Flow Direction
Identify the flow direction arrow cast into the side of the brass valve body. The valve must be oriented so the arrow points downstream, toward your irrigation system and away from the municipal water source.
Step 3: Secure the Connections
Carefully thread the valve onto your prepared male fittings. Use a wrench on the hex ends of the valve body to tighten—do not use the check valve covers for leverage.
Step 4: House and Protect
Ensure the installed valve is housed inside an appropriately sized municipal valve box. This protects the brass body from the elements while leaving the top-facing check valves accessible for future maintenance.
