German insert deal valves insert deal models insert deal prices

insert deal valves are used to prevent backflow of the medium. They open automatically using the kinetic energy of the fluid itself and close automatically during reverse flow. They are commonly installed at the outlet of water pumps, the outlet of steam traps, and other locations where reverse fluid flow is not permitted. Check valves are classified into three types: swing check, lift check, and wafer check. For swing check valves, the fluid can only flow from left to right; they close automatically during reverse flow. For lift check valves, when the fluid flows from left to right, the valve core lifts to form a passage; during reverse flow, the valve core is pressed tightly against the valve seat to close. For wafer check valves, when the fluid flows from left to right, the valve core opens to form a passage; during reverse flow, the valve core is pressed tightly against the valve seat to close. Wafer check valves allow for multi-position installation, have small volume, light weight, and compact structure.

insert deal valve industry applications

Ball valves are widely used in industries such as petroleum refining, long-distance pipelines, chemical engineering, papermaking, pharmaceuticals, water conservancy, electric power, municipal engineering, and steel, playing a pivotal role in the national economy. They feature a 90-degree rotational action, with a spherical plug body having a circular through-hole or channel along its axis. Ball valves are mainly used in pipelines for shut-off, distribution, and changing the flow direction of the medium. They can achieve tight shut-off with just a 90-degree rotation and minimal torque. Ball valves are most suitable for use as on/off and shut-off valves, V type ball valves. In addition to pipeline parameters, special attention should be paid to the environmental conditions for electric valves, as the electric actuator in an electric valve is an electromechanical device whose operating status is significantly affected by the environment. Typically, special care is required when using electric ball valves and butterfly valves in the following environments. [1]

insert deal valve performance testing precautions

1) When valves of a specific specification are manufactured in batches, an official agency should be commissioned to perform the following performance tests: (1) opening and closing torque of the valve under working pressure conditions; (2) detection of the flow resistance coefficient of the valve under pipeline water transmission conditions. 2) The following tests should be performed on valves before factory release: (1) with the valve in the open position, the valve body shall withstand an internal pressure test at twice the valve's working pressure; (2) with the valve in the closed position, both sides shall separately withstand 11 times the valve's working pressure without leakage; however, for metal-sealed butterfly valves, the leakage value shall not exceed the relevant requirements.

insert deal valve installation instructions

Butterfly valves have a simple structure, small volume, and light weight, with relatively few components; a butterfly valve is constituted by just a few key parts. Operation is very convenient; simply rotate the switch to ninety degrees. Butterfly valves provide excellent control over fluids, allowing flow rate to be increased or decreased at any time. All valves exhibit certain resistance when transporting any fluid, and the resistance of a butterfly valve mainly comes from its own structure, such as the thickness of the butterfly valve body. To reduce fluid resistance, one only needs to reduce its thickness. Elastic seals have the disadvantage of being limited by temperature. The application range of butterfly valves is also quite broad. If used for flow control, different types and valve body sizes must be selected, as butterfly valves are inherently suitable for larger nominal diameters during design. Butterfly valves are not only widely used in general industries such as petroleum, gas, chemical engineering, and water treatment, but are also applied in cooling water systems of thermal power stations.

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