Choose V VQ647 USES pneumatic valve, use conditions and control mode

choose V pneumatic valve of the use of VQ,
working conditions of use and the control mode, V pneumatic valve selection description: V pneumatic valve selection step
( ） Clear of the use of V type pneumatic valve in the pipeline system, V pneumatic valve operation conditions were determined: suitable medium, working pressure, working temperature
( ） Determine and V pneumatic valve connection of the nominal pipe size and connection mode: flange, Applicable flange standard) , screw, clamp, welding
( ） Determine V pneumatic valve operation mode: manual, electric, pneumatic, hydraulic,
( ） According to the dielectric properties ( Physical: pressure, temperature; Chemical properties) Determine the selected V pneumatic valve shell material and trim material
( ） According to the types of pneumatic valve control requirements to V: cutting, adjustment, to cut off the adjustment, safety of pneumatic valves
( ） According to the 'V' type pneumatic valve and flow characteristic, determining the characteristics of medium V pneumatic valve structure: brake pneumatic valve, pneumatic valve, globe pneumatic valve, pneumatic ball valve, throttle check pneumatic valve, safety valve, pressure pneumatic valve, etc.
( ） V pneumatic valve parameters: to control the pneumatic valve is determined according to different needs to allow flow resistance, discharge capacity, back pressure, to determine the size, pneumatic valve seat diameter
( ） Determine the geometric parameters of the selected V pneumatic valve: the structure and size, length, the flange connection pneumatic valve size height direction after opening and closing, connecting bolt size and quantity, the shapes of the pneumatic valve size, etc.
( ） Choose according to the above steps, using pneumatic valve product selection sample
select the appropriate products, pneumatic valve type selection based on
( ） Chooses a v-shaped USES pneumatic valve, use the
working condition and control methods ( ） The nature of the working medium: physical properties ( Pressure, temperature, state) And chemical properties, Corrosive, inflammable, explosive)
( ） The requirement: the characteristics of the pneumatic valve fluid flow resistance, discharge capacity, flow characteristics, sealing level
( ） Installation size and shape size requirements: nominal diameter, means and the connection size, shape and size and weight limit (
） Pneumatic valve product reliability, service life and electric explosion-proof performance such as additional requirements