The Clapper Assembly 2-1/2" Swing Check Valve is a specialized flow control component designed for reliable operation within fire protection sprinkler systems. It is essential for fire sprinkler contractors, maintenance professionals, and system engineers seeking to safeguard water flow integrity and prevent backflow in critical moments.

• Durable Construction: Made from ASTM A536 ductile iron, this valve body offers robust mechanical strength and excellent corrosion resistance to withstand harsh fire protection environments.
• Precision Clapper Mechanism: Engineered for consistent sealing, minimizing pressure loss while effectively preventing reverse water flow to maintain sprinkler system reliability.
• Corrosion-Resistant Hardware: Internal hinges, pins, and fasteners crafted from stainless steel resist water exposure and varying pressure conditions, ensuring long-term performance.
• Certified Compliance: UL Listed to UL 321, FM Approved, and NFPA 13 compliant, meeting essential fire safety codes and installation standards.
• Operational Capacity: Supports pressures up to 175 PSI (12.1 bar) and performs reliably across typical mechanical room and underground temperatures.
• Compatibility and Mounting: Designed for 2-1/2" nominal size piping, compatible with Viking grooved and flange ends, allowing versatile installation in horizontal or vertical positions with upward flow orientation.

This swing check valve helps maintain uninterrupted, unidirectional water flow within fire sprinkler mains, preventing contamination and costly system failures caused by backflow. Its durable ductile iron construction and stainless steel components ensure it endures mechanical stresses and environmental challenges common in fire protection settings. Compliance with rigorous standards provides peace of mind that it supports certified sprinkler systems reliably. The valve’s engineered clapper reduces pressure drops and water hammer effects, maximizing hydraulic efficiency. Easy integration with Viking piping systems simplifies installation and maintenance, reducing downtime. Suitable for mid-range sprinkler mains, this assembly supports a more secure, efficient fire protection infrastructure, making it a trusted choice for professionals focused on safety and system longevity.