Water check valve
Introduction to D363H-16C Butt Welding Metal Seal Butterfly Valve: The D363H-16C butt welded metal sealing butterfly valve adopts a precise J-shaped elastic sealing ring and a three-layer metal hard sealing structure with three eccentrics. It is widely used in industrial pipelines such as metallurgy, power, petrochemical, water supply and drainage, and municipal construction where the medium ...
Introduction to straight through diaphragm valve: A straight through diaphragm valve is a special form of block valve, whose opening and closing parts are a diaphragm made of soft material, which separates the valve body cavity from the valve cover cavity and driving components. The valve has an elastic and disturbable diaphragm connected to the compressed part by bolts. The compressed part is ope...
Valves are control components in fluid conveying systems that have functions such as cutoff, regulation, diversion, prevention of reverse flow, pressure stabilization, diversion, or overflow pressure relief. According to different classification standards, there are various types of valves, and each valve has its own unique features. 1. By valve type Block valve: Block valve, also known as closed ...
1. Replace the sealing ring After long-term use in sewage media, the gap between the impeller and the sealing ring may increase and need to be replaced in a timely manner. 2. Place in a ventilated and dry place When not in use, the water pump should be promptly lifted away from the water source and the accumulated water inside the pump should be drained, especially in cold winter. 3. Regularly ins...
(1) Wedge type single gate valve ① The structure is simpler than that of an elastic gate valve; ② At higher temperatures, the sealing performance is not as good as elastic gate valves or double gate valves; ③ Suitable for high-temperature media prone to coking. (2) Elastic gate valve It is a special form of wedge type single gate. Compared with wedge gate valves, they have good sealing performance...
Prohibit 1 Hydraulic test shall be carried out under Negative temperature during winter construction. Consequence: Due to the rapid freezing inside the pipe during the hydraulic test, the pipe freezes out. Measures: Try to conduct a water pressure test before winter construction, and after the test, blow the water clean, especially the water inside the valve must be removed completely, otherwise t...
Centrifugal pump is one of the most commonly used pumps in water transportation. The elevation of the floor in the pump room depends on the installation height of the water pump. Correctly calculating the maximum allowable installation height of the water pump is of great significance to ensure safe water supply and save civil construction costs. In order to avoid the occurrence of cavitation, the...
The purpose of using a check valve is to prevent reverse flow of the medium, and a check valve is generally installed at the outlet of the pump. In addition, a check valve should also be installed at the outlet of the compressor. In short, in order to prevent reverse flow of the medium, check valves should be installed on equipment, devices, or pipelines. Generally, vertical lift check valves are ...
The fifth China Valve City Longwan International Valve Exhibition, which lasted for three days, was successfully concluded at the Wenzhou Olympic Convention and Exhibition Center on the afternoon of May 29th. More than 400 companies showcased their costumes at this exhibition, attracting 103 national merchants from Fujian, Tianjin, Shanghai, Jiangsu, Henan, Hebei, Beijing, Guangzhou, and internati...
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