2" Febco 850 Double Check Assembly Low Flow Fire Protection

The 2" Febco 850 Double Check Assembly installs in low-flow fire protection lines to prevent contaminated water from flowing back into the municipal potable water supply. This backflow prevention device functions via two independently operating, spring-loaded check valves in series, which provide redundant protection against backpressure and backsiphonage in non-health hazard applications like wet-pipe fire lines without chemical additives.

Property owners and facility managers rely on this equipment to maintain compliance with safety standards and local codes, preventing costly regulatory violations. Integrated top-mounted test cocks allow for efficient field testing, while quarter-turn ball valves with blue handles provide reliable system isolation during routine maintenance and in-line servicing.

Key Features & Construction

• Durable Bronze Construction: Crafted from high-quality bronze to resist corrosion and withstand harsh operating environments in commercial and industrial fire suppression systems.
• Double Check Valve Technology: Features two independent, spring-loaded check valves in series that protect your drinking water supply from stagnant water and chemical contamination.
• Low-Flow Fire Protection Optimization: Specifically engineered to deliver consistent and secure water flow control for commercial and industrial fire safety setups.
• Modular Inline Design: Offers straightforward installation using NPT end connections and simplifies routine inspections through a single access cover.
• Integrated Test Cocks: Equipped with four top-mounted test cocks that facilitate accurate field testing and code compliance checks.
• Quarter-Turn Shutoffs: Includes quarter-turn ball valves featuring blue handles for positive shut-off and reliable isolation during maintenance.

Technical Specifications & Compliance Table

Verify all local Authority Having Jurisdiction (AHJ) mandates and consult the manufacturer technical specifications before beginning installation. Documentation: Download Manufacturer Technical Data & Cut Sheet (PDF)