Enhance the efficiency and hygiene of your ventilation system with this high-quality Check Valve, designed for wide compatibility and reliable performance. Crafted from durable ABS, stainless steel, and silicone materials, this valve is engineered to fit most range hoods with pipe diameters approximately 150 to 180mm (5.9 to 7.1 inches), making it a versatile and practical replacement part. Key Features: · Wide Compatibility: Equipped with a special reducing circle, this check valve is compatible with most range hoods, ensuring a perfect fit for various ventilation setups. · Automatic Operation: The valve opens automatically to allow smoke exhaust through the airflow and closes securely using gravity and a robust stainless steel spring, effectively blocking outdoor odors and preventing mosquito entry. · No Smoke Leakage: Featuring a strong stainless steel spring and a seamless silicone sealing ring, this valve provides a tight, leak-proof seal that prevents smoke and odors from escaping back into your space. · Easy Installation: Designed for convenience, the main body and fixed seats can be disassembled for faster and simpler installation or replacement, saving you time and effort. · Ideal Replacement Part: With excellent sealing performance and straightforward installation, this check valve serves as an ideal replacement for worn or damaged components, restoring your ventilation system’s efficiency. Specifications: · Item Type: Check Valve · Material: ABS, Stainless Steel, Silicone · Suitable Pipe Diameter: Approx. 150 to 180mm (5.9 to 7.1 inches) Package Includes: · 1 x Check Valve This durable and easy-to-install check valve ensures optimal airflow control while preventing unwanted odors and pests from entering your home. Its reliable sealing and automatic operation make it an essential upgrade or replacement for your range hood ventilation system.