The swing check valve is mainly used for the one-way flow of the medium in the pipeline, which only allows the medium to flow in one direction to prevent the medium from backflow. Features: 1. Made of high quality stainless steel, sturdy and durable for long term use. 2. With good resistance to corrosion and high pressure. 3. Good sealing capability prevents the fluid from leaking. 4. 1inch standardized thread, suitable for most pipeline system. 5. Applicable for water, steam, oils, nitric acid, urea and more. 6. Mainly used in the pipelines of petroleum, chemical, pharmacy, fertilizer, electricity. Specification: Material : 304 Stainless Steel Thread: DN25 1" Flow Direction: One Way Color: Silver Size (L*H): 8*6.5cm / 3.15*2.56n Weight: Approx. 323g/11.4oz Package list: 1 * Swing Check Valve Note: 1. Due to the difference between monitors and light effect, the pictures may not reflect the actual color of the item. 2. Please allow slight error due to manual measurement. Thanks for your understanding. 1Made of high quality stainless steel, sturdy and durable for long term use. 2With good resistance to corrosion and high pressure. 3Good sealing capability prevents the fluid from leaking. 41inch standardized thread, suitable for most pipeline system. 5Applicable for water, steam, oils, nitric acid, urea and more.