German herose valves herose models herose prices

The closing element (ball) of a herose valve is driven by the valve stem and rotates around the axis of the ball valve. It can also be used for fluid regulation and control. The hard-sealed V type ball valve has strong shear force between its V type ball core and the metal valve seat overlaid with hard alloy, making it particularly suitable for media containing fibers, small solid particles, etc. Multi-way ball valves in pipelines can not only flexibly control the confluence, diversion, and switching of flow direction of the medium, but also close any one channel to connect the other two channels. This type of valve should generally be installed horizontally in pipelines. Ball valves are classified by actuation method into: pneumatic ball valves, electric ball valves, manual ball valves.

herose 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 administration, and steel, playing a significant role in the national economy. It has a rotating action of 90 degrees, with the plug body being a sphere with a circular through-hole or passage along its axis. Ball valves are mainly used in pipelines for cutting off, distributing, and changing the flow direction of the medium. They only require a rotation of 90 degrees and very little torque to achieve tight closure. Ball valves are most suitable for use as on-off and cut-off valves, V type ball valves. In addition to paying attention to pipeline parameters, special attention should be paid to the environmental conditions for electric valves, as the electric device in electric valves is an electromechanical device whose operating status is greatly affected by the environment. Under normal conditions, special attention should be paid when using electric ball valves and butterfly valves in the following environments. [1]

herose valve sealing requirements

The sealing performance of a valve refers to the ability of each sealing part of the valve to prevent medium leakage, which is the most important technical performance indicator of the valve. There are three sealing parts in a valve: the contact area between the closing member and the two sealing surfaces of the valve seat; the fit between the packing and the valve stem and packing box; and the connection between the valve body and the valve cover. Leakage at the first location is called internal leakage, commonly known as incomplete closure, which affects the valve's ability to cut off the medium. For shut-off valves, internal leakage is not allowed. Leakage at the latter two locations is called external leakage, i.e., medium leaking from inside the valve to the outside. External leakage causes material loss, pollutes the environment, and may even cause accidents in severe cases. For flammable, explosive, toxic, or radioactive media, external leakage is strictly prohibited, so valves must have reliable sealing performance.

herose valve structure

Good sealing performance, but the load of the working medium on the ball is entirely transferred to the outlet sealing ring, so it is necessary to consider whether the sealing ring material can withstand the working load of the ball medium. Under high pressure impact, the ball may shift. This structure is generally used for medium and low-pressure ball valves. Fixed ball valve Fixed ball valve The ball of the fixed ball valve is fixed and does not move under pressure. Fixed ball valves are equipped with floating valve seats, which move under medium pressure, pressing the sealing ring tightly against the ball to ensure sealing. Bearings are usually installed on the upper and lower shafts of the ball, resulting in low operating torque, making them suitable for high-pressure and large-diameter valves. To reduce the operating torque of ball valves and increase sealing reliability, oil-sealed ball valves have emerged. Special lubricating oil is injected between the sealing surfaces to form an oil film, enhancing sealing performance and reducing operating torque, making them more suitable for high-pressure, large-diameter ball valves.

Weidou Intelligent Technology specializes in selling German herose valves, herose safety valves, herose globe valves, herose control valves, herose solenoid valves, herose ball valves, herose proportional valves, herose diaphragm valves, herose butterfly valves, herose hydraulic transmission valves, herose check valves, herose pressure reducing valves, herose relief valves, herose sequence valves, herose balance valves, herose throttle valves, herose directional control valves, all original imports from Germany. Welcome customers to inquire and order.