The difference between different pneumatic valves

the difference between the different pneumatic valve? Such as: stop pneumatic pneumatic valve and check valve, as the difference between the difference between pneumatic valve, pneumatic valve and the ball as the difference between the pneumatic valve and brake valve, brake pneumatic valve and butterfly valve, pneumatic ball valve, and the difference between a butterfly pneumatic valve, pneumatic ball valve, and the difference between brake the difference between the pneumatic valve, etc. Let below small make up to introduce the difference between different pneumatic valve!
stop pneumatic pneumatic valve and check valve
the difference between a physical difference: as of pneumatic valve has a handle or handwheel control mechanism, such as check pneumatic valves didn't handle and control mechanism.
the difference on the application: by the pneumatic valve is widely used in chemical industry device, sealed performance is good, can also be used to regulate the flow when used in the pump outlet and regulating pneumatic valves bypass flow upstream and need to adjust flow. Check the pneumatic valve is to prevent the reverse flow pneumatic valve, fluid sealing performance is poor, the phrase to prevent pollution because of fluid backflow, temperature or mechanical damage, mixed material is prohibited.
as the difference between the pneumatic valve and ball valve
the difference on the application, by the pneumatic valve is a widely used chemical plant type pneumatic valve, pneumatic valve sealing performance and reliable, and suitable for regulating flow, more commonly installed in the pump discharge and regulating pneumatic valves bypass flow upstream and need to adjust flow. Main characteristics of pneumatic ball valve is compact structure, easy to operation, maintenance, suitable for medium such as water, solvent, acid and gas, also can apply to the working conditions of media, such as ethylene, oxygen, methane, hydrogen peroxide, etc.
stop pneumatic pneumatic valve and gate valve working principle of the
the difference between a difference: stop pneumatic valve pneumatic valve lever is rising, the handwheel with the pneumatic valve stem rotation and upward movement. Brake is pneumatic valve hand wheel rotation, pneumatic valve lever upward movement. Pneumatic flow, gate valve fully open, by the pneumatic valve is not. Brake pneumatic valve without direction of import and export requirements, by the pneumatic valve has a regulation to import and export!
shape difference: brake pneumatic valve is shorter than the pneumatic valve and high, especially the height of the pneumatic valve stem need higher space.
sealing surface difference: stop pneumatic valve sealing surface, touch each other only when fully closed, closed pneumatic valve core and the sealing surface of the relative slip is very small, and sealing surface wear is small; Pneumatic valve sealing surface of the wear and tear, mostly because of the pneumatic valve core and the sealing surface before have sundry, or is due to the closed position is not tight, cause of high speed scouring caused by.
brake pneumatic valve and butterfly valve
the difference between the way of action: the difference between the brake pneumatic valve, pneumatic valve belong to straight travel or pneumatic valve rod drives the pneumatic valve plate do vertical movement up and down, complete brake pneumatic valve opening and closing so brake pneumatic valve of flow resistance is small, but because of its open height is higher, so the opening and closing speed slower. Pneumatic valve belongs to quarter-turn pneumatic butterfly valve, the control of pneumatic valve pneumatic valve plate around the pneumatic valve do ° rotation axis, complete control of pneumatic valve opening and closing action.
function, USES the difference: brake pneumatic valve small flow resistance, good seal performance, brake is pneumatic valve pneumatic valve flow direction of medium plate and the vertical Angle, if pneumatic valve in the pneumatic brake valve plate switch does not reach the designated position, the erosion of the pneumatic valve plate by the medium pneumatic valve plate vibration, easy to brake in pneumatic valve seal is damaged. So much for seal strict and does not require frequent opening and closing deadline with the pipe, and is not suitable for the role of adjusting the parameters of the pipeline medium. Because of the opening and closing speed is slow, also is not applicable to the emergency cut off. Brake using a wide range of conditions, the pneumatic valve at high temperature, low temperature, high pressure, low pressure, etc, can be used in place of as long service life.
the difference between pneumatic ball valves and butterfly pneumatic valve
the difference on the selection and application, usually small, Generally refers to the DN thread pneumatic ball valve is used in the following more economic, above DN pneumatic ball valve flange connection, the commonly used, because of the processing technology and material of large diameter ball pneumatic valve are relatively expensive, but because the ball flow character of the pneumatic valve sealing and widely used in some industries, such as papermaking industry, gas industry, and high pressure area and so on. Butterfly pneumatic valve is generally used in large diameter ( Usually refers to the DN above, structure is simple, the price is relatively cheap, general pressure under the PN ( Eccentric butterfly pneumatic valve general pressure under the PN, compared with the pneumatic ball valve adjustment of pneumatic valve sealing performance is poor.
pneumatic pneumatic ball valve and gate valve
the difference between the sealing surface difference: pneumatic ball valve sealing surface is spherical; Brake pneumatic valve sealing surface is flat.
movements: the difference between the pneumatic ball valve pneumatic valve core is around its axis of rotation; Pneumatic valve pneumatic brake valve plate is along the axis of a lifting movement.
the difference of function: brake pneumatic valve can adjust the flow rate through the opening; Pneumatic ball valve is not easy to do this.