Material: Brass shell, the check valve is made of high quality brass and stainless steel spring, which has the highest durability, corrosion resistance and airtightness, and can withstand high temperatures and high pressures. Features: The check valve group is used on the water suction line or water pump to prevent water from flowing back into the well after the stopping the water pump, thus avoiding unnecessary backflow. Design: The water shut-off valve has an internal thread in the direction of flow. The valve has a stable brass poppet guided by a brass guide pin that ensures a good seal and minimal guide pin wear. EASY TO USE: Just a few turns and screw on our leak-proof check valve. > Application: For water pumps, fountains, washing machines, gardens, rain barrels, buckets. For suction on the pump to prevent backflow. Product Whether on the washing machine at home or outside in the garden, the possibilities of There are many applications: pumps, rain barrels, fountains, hoses, garden hoses, irrigation systems, heat pumps or garden pumps or barrels. Our check valves are also widely used in industry and horticulture. Specification: Material: Brass. Internal thread: 1" . Color: Gold. Operating temperature: -20100. Dimensions: approx. 49 x 39 mm (L x OD) / 1.93" x 1.54" Features: 1. Made of high quality brass, sturdy and durable for long time use. 2.Good corrosion resistance and oxidation resistance. 3.Good sealing, no leakage. instruct: 1.The check valve should be installed on the horizontal pipeline.The vertical check valve should be installed on the vertical pipeline, and the fluid will flow from the bottom to the top. 2. The installation position of the angled check valve is not limited. It is usually installed on horizontal pipes, and can also be installed on vertical pipes and inclined pipes. 3. Lo rs installation, pay attention that the direction of fluid flow is consistent with the direction of the arrow indicated on the valve body. Scope of delivery: 1 x Spring Thread Straight Check Valve