Inline spring check valve for unidirectional water flow that prevents backflow and helps your piping system operate with consistent pressure and peak efficiency. Key benefits Prevents backflow while maintaining steady system pressure for reliable operation of pumps, filters, and fixtures. Robust brass construction with red forging technology provides pressure tolerance, durability, and erosion resistance. Reliable, leak sealing through a vertical softseal structure with silicone rubber, preserving flow rates across multiple installation positions. Flexible installation with threaded connections for horizontal or vertical pipelines, compatible with DN15, DN20, and DN25 plumbing systems, and designed for easy integration without special tools. Specifications and features Type: Inline spring check valve Function: Unidirectional water flow, backflow prevention Material: Brass ( brass via red forging technology) Sealing: Vertical softseal with silicone rubber Installation: Threaded, suitable for horizontal or vertical orientations Size compatibility: DN15, DN20, DN25 What makes it stand out Combines precise flow control with durable brass construction to withstand demanding pressure environments. Consistent performance across installation orientations thanks to a reliable softseal design. Simple, tool integration into existing piping layouts with standard threaded connections. Applications and use scenarios Domestic water supply systems with circulating pumps to prevent backflow and maintain steady pressure. Irrigation and horticulture setups where backflow could contaminate the supply or affect pressure stability. Industrial or commercial process lines, boiler feed, or HVAC piping where backflow protection and reliable sealing are essential. This valve remains consistent with its original specifications and functionality, delivering dependable backflow prevention, durable construction, and versatile installation options without compromising system performance.