Product Details import import butterfly valve butterfly buffer buffer buffer valve butterfly valve Overview imports rely on the media itself refers to flow automatically open and close the valve, the valve to prevent the media back, also known as the backstop valve, check valve, reflux valve, and back pressure valve. Check valves are an automatic valve, whose main role is to prevent the media back, to prevent the pump and drive motor reversal, and discharge the container medium. Pressure valve which can also be used to exceed the system pressure may rise auxiliary systems provide supply pipeline. Import butterfly valve works buffer in a predetermined direction when the medium flows, the role of the media by the force of the valve is open; when the upstream medium, because the weight of the valve and the valve by the media backward force, the valve flap and seat sealing surface adhesion and closed, to prevent the media countercurrent purposes. Import butterfly valve technical parameters Nominal buffer: 1.0 ~ 2.5MPa Nominal Diameter: 40 ~ 1400mm medium: water, oil, water, sewage Temperature: 0 ~ 80 ℃ (if necessary, up to 200 ℃) valve Material: stainless steel, carbon steel flanges standard: GB / T 17241.6 GB / T9113 test standards: GB / T 13927 AP1598 import Buffering Butterfly valve installation and maintenance: 1, the valve passages to be blocked at both ends, there is a dry and ventilated room. If long-term storage should always check the anti-rust. 2, the valve should be cleaned before installation, and eliminate defects caused during transport. 3, must be carefully checked when installing signs and nameplates on the valve meets the requirements. 4, vertical lift check valve should be installed in a vertical pipe. 5. The level of valve lift check valve should be installed in horizontal pipelines. 6. Do not check valve in the pipeline to withstand the weight of large non-return valve should be self-supporting, so that the impact of unmanaged system pressure. 7, check valve, flow direction should pay particular attention to the media, the media should be consistent with the direction of the normal flow direction indicated by the arrow on the valve body, otherwise it will cut off the normal flow of media. Bottom valve should be installed in the bottom of the pump suction piping. 8, the formula lift check valve should be installed in horizontal pipelines, vertical lift check valve and bottom valve is usually installed in a vertical pipeline and the medium flows from bottom to top. 9, when the check valve is closed, it will produce water hammer pressure in the pipeline, can cause serious damage to the valves, piping or equipment, especially for large mouth lines or high-pressure line, it should cause the check valve's choice close attention. Buffering Butterfly Check Valve import orders:? Please indicate the following when ordering: 1, ① product name and model ② ③ nominal diameter nominal rated flow coefficient KV④ working medium ⑤ ⑥ ⑦ connection ⑧ inlet pressure with an attachment so we can correct for your selection. 2. Please indicate any special requirements when ordering products. 3, if the unit has been selected by the design model, press model directly to our Sales Department Order. 4, when the occasion is very important or the environment is more complicated, you try to provide design drawings.