Hebei Huahui Valve Co., Ltd

  As a   Flange Check Valve Manufacturer , share with you. There are some taboos when installing valves. You must not violate them. Today, the butterfly valve manufacturer will tell you what are the taboos. 1 Water pressure test under negative temperature for winter construction. Consequence: The tube freezes due to the rapid freezing in the tube during the hydraulic test. Measures: Try to carry out a water pressure test before the winter application, and purge the water after the pressure test, especially the water in the valve must be cleaned, otherwise the valve will be rusty at light, and freeze and crack if it is heavy. Multi-function Check Valve When the water pressure test is carried out in the winter, the project must be carried out at a positive indoor temperature, and the water must be blown off after the pressure test. 2 The piping system was not flushed carefully before completion, and the flow rate and speed did not meet the requirements for piping flushing. It ev...

  As a   Butterfly Valve Leading Manufacturer , share with you. 1. The main control parameters of the butterfly valve are specifications. 2. The butterfly valve is a single-plate air valve with simple structure, convenient processing, low cost, simple operation, but poor adjustment accuracy. It is only suitable for switching or rough adjustment in the ventilation and air conditioning system. 3. It can be operated manually, electrically or by zipper, and can be fixed at any angle within 90°. 4. Due to the single-axis single valve plate, the bearing capacity is limited, and the service life of the valve is short under the conditions of large pressure difference and large flow rate. The valve is divided into closed type and ordinary type, heat preservation and non-heat preservation. 5. The electric butterfly valve has only two-position control, and the electric actuator is the same as the multi-leaf valve. Flange Butterfly Valve Installation matters The butterfly valve is simple ...

  As a   Butterfly Valve Leading Manufacturer , share with you. If the flanged butterfly valve is required to be used for flow control, the first thing is to correctly select the size and type of the butterfly valve. The structural principle of butterfly valve is especially suitable for manufacturing large-diameter valves. Butterfly valves are not only widely used in general industries such as petroleum, gas, chemical, and water treatment, but also used in cooling water systems in thermal power stations. Commonly used butterfly valves include wafer butterfly valves and flange butterfly valves. Wafer type butterfly valve uses double-head bolts to connect the valve between two pipeline flanges. Flanged butterfly valve has flanges on the valve, and the two flanges of the valve are connected to the pipeline flanges with bolts. DIN F5 Gate Valve When in the fully open position, the thickness of the butterfly plate is the only resistance when the medium flows through the valve body,...