Double Flanged Dual Plate Check Valve

The Double Flanged Dual Plate Check Valve is an advanced, high-integrity non-return valve designed for rigorous industrial environments. Unlike standard check valves, this design focuses on emission-free operation, fire safety, superior flow efficiency, and extended service life across a broad spectrum of media, including steam, water, oil, gas, and chemicals.

⚙️ Enhanced Design and Construction

Feature	Description	Material Options
Connection Type	Double Flanged (Drilled-Thru or Threaded Ends)	Provides a full, high-integrity bolted connection for critical pipelines.
Body Materials	Robustly constructed to handle extensive applications.	Cast Carbon Steel, Stainless Steel, or Alloy Steel.
Plate Mechanism	Dual Plate (Double Door)	Provides quick, silent, and low-inertia closure for minimal water hammer.
Sealing Surface	Uninterrupted gasket surface.	Ensures a perfect seal between the valve and the mating flange.
Design	Retainerless, Emission-Free	Eliminates potential external leak paths common in conventional check valves.

⭐ Key Performance Advantages

1. Safety and Environmental Integrity

Retainerless Emission-Free Design: The body has no holes through the body wall.² This eliminates potential leak paths, making leakage to the outside impossible, which is crucial for handling hazardous or fugitive emission-sensitive fluids.
Intrinsically Fire Safe: The design is inherently safe against fire hazards, offering reliable containment even under extreme conditions.

2. Flow Efficiency and Energy Savings

Maximized Flow Path: The design maximizes the flow path area through the valve, resulting in a lower pressure drop (DP) compared to traditional check valves, which leads to lower energy costs.
Hinge Design: The disc utilizes side hinges, which eliminates the effect of gravity when installed in a horizontal pipeline. This contributes to lower energy costs and minimizes premature wear.

3. Reliability and Service Life

Reduced Slamming: The reduced weight of the disc minimizes the force of slamming upon flow reversal, thus reducing the risk of water hammer and stress on the valve and piping system.
Fast-Acting Response: Springs provide a fast-acting response to flow reversal, minimizing stress on the system and maximizing the service life of the valve.
Extended Seat Life: The precise clearance between the disc hinge and hinge pin eliminates any dragging effect from the discs across the seat during opening and closing, significantly extending seat life.
Shock Bumpers: Incorporated shock bumpers extend the cycle life of internal components, ensuring minimal wear even in severe service applications.

🏭 Ideal Applications

This advanced double-flanged check valve is the superior choice for high-specification and demanding industrial applications where safety, efficiency, and longevity are prioritized: