Description
? Product overview and uses
The french aerodynamic tripod valves can be divided into types l and t. The l-type triton valve, which is used to switch the flow of the medium, allows for vertical connections between the two channels, typically with a two-valve structure, or with a four-valve structure as required by the user. The quadrilateral sealed triton valves have a stymied and well-structured structure that not only achieves a transition in the flow of media but also connects the three corridors, but also closes one channel, connects the other two and has the flexibility to control the convergence or diversion of the intermediate pipe。
♪ characteristics and standards
Solid ball core, full. Equivalent product is heavier than peer。
Fire-resistant, static electrical treatment, valve blast-proofing devices to ensure system safety。
High-platform design meets iso 5211 standards and allows direct connection to iso 5211 standard implementers. It's a good swap
Silicon-solved casting valves, closely structured and of high size. Nice look。
? Main performance parameters
Aerodynamic executor
Double, single-role constant closed, single-role common
Options for annexes
Switch to electromagnetic valves, limit switches, air filter pressure-relief valves, electrical locators, hand-wheelers
Voltage
Ac220v, ac110v, ac380v, dc12v, dc24v, dc110v
Common passage
Dn15-400mm
Public pressure
1. 6 mpa-6. 4mpa
Applicable temperature
-30°c ~450°c
Connection
French, screwdriver, welding, carving
Valve structure
Three l, three t
Valve material
Wcb, 304, 316, 316 l, etc
Valve plate material
Wcb, 304, 316, 316 l, etc
The valve liner
Ptfe, ppl, hard seal, etc
Apply media
Steam, water, gas, etc
♪ three-way valves flow to the map
♪ french air-activated three-way ball ♪?
The selection of the electromagnetic valve
I: applicability
[. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 。
[? The temperature of the fluid shall be less than the rated temperature of the selected electromagnetic valve。
[? Electromagnetic valves generally allow liquid viscosity below 20cst and greater than 20cst should be specified。
[? `work pressure differentials ' , with the maximum pipe pressure differentials less than 0. 04 mpa, should be selected in a direct and step-by-step motion pattern such as zs, 2w, zqdf, zcm series; `minimum working pressure differentials greater than 0. 04 mpa ' , with the option to use a lead (pressure range) electromagnetic valve; `maximum working pressure margin ' , with a maximum working pressure less than the maximum rated pressure of the electromagnetic valve; `general electromagnetic valves' are all one-way jobs, so care is taken whether there is any inverse pressure differentials, if any。
[ ~ ~ when fluid is not sufficiently clean, filters should be installed in front of the electromagnetic valve
Worms require a cleanliness to the medium。
[? Pay attention to flow apertures and take-over calibres; electromagnetic valves are generally controlled only by two switches; conditions allow for the installation of bypass tubes to facilitate maintenance; the opening of electromagnetic valves is customised in the event of a water hammer。
[? Pay attention to the effect of ambient temperature on electromagnetic valves. ]
[? Power currents and consumption should be selected on the basis of output capacity, power voltage generally allows around ±10, and va values are higher when communication starts。
Reliability
[? Electromagnetic valves are divided into two types of constant closed and open; they are generally closed, open and shut down; however, they are selected for opener at a short time when they are off at a very long time。
[? Life trials, plants are generally model pilot projects, and indeed there are no professional standards for electromagnetic valves in our country, so be careful in choosing the electromagnetic valves。
[? Quick series are generally selected when action time is short and high。
Iii. Security
[? Electromagnetic valves are waterproof, and if conditions do not permit, choose the waterproof type, which the plant can make。
[? Electromagnetic valves must have a maximum nominal pressure above the maximum pressure in the tube, otherwise their useful life will be reduced or other contingencies will occur。
[? For corrosive liquids, a total stainless steel type should be chosen and a strong corrosive fluid should be preferred to a plastic king (slf) electromagnetic valve。
[? The explosive environment must choose the corresponding blast-proof product。
Iv. Economic
[? There are many electromagnetic valves that can be used, but the most economical products should be selected on the basis of meeting the above three points。
Structure of the electromagnetic valve
Direct step-by-step indirect lead
I: direct electromagnetic valves
[? There are two types of permanent closed and open. The constant blackout is in a state of shut-down, generating electromagnetic power when the loops go through, allowing the kinetic cores to overcome the spring power and the static core to open the valve directly, and the medium to open the path; the electromagnetic power disappears when the wire is out, the kinetic core is repositioned under the spring power, the valves are shut down directly and the medium is not working. It's simple, it's reliable, it works in a zero-pressure and micro vacuum. It's the opposite. If an electromagnetic valve is less than the zero six flow diameter. (chart i is typical of structure)
Ii. Step straight electromagnetic valves
[? The valve is connected with a single and secondary valve, and the main valve and the conductor valve step by step to open the main valve directly by electromagnetic force and pressure differentials. When the coil is wired, the electromagnetic force is created to inhale the kinetic core and the static core, the conductor valve is opened and the conductor valve is located on the main valve and the kinetic core is attached to the main valve core, when the pressure on the upper cavity of the main valve is discharged through the conductor valve, moving the main valve core upwards at the same time as the pressure and electromagnetic force, opening the flow of the main valve medium. When the electromagnetic power disappears when the kinetic core closes the conductor valve under self-heaviness and spring force, when the medium enters the upper cavity of the main valve in the balance hole, raising the upper cavity pressure, and when the main valve is shut down with spring re-entry and pressure. It is well structured, reliable and reliable at zero pressure. For example: zqdf, zs, 2w, etc. (chart ii is typical of the structure)
Iii. Indirect lead electromagnetic valves
[? This series of electromagnetic valves is formed by a combination of the lead valve and the main valve core in connection with the channel; the constant closed form is closed when electricity is not available. When the coil is powered, the magnetic forces that are generated combine the kinetic and static cores, the conductor valves open and the medium flows to the export, at a time when the upper cavity pressure of the main valve core is reduced below the pressure on the side of the import, and the pressure is formed to overcome the resistance of the spring and then move upwards towards the purpose of opening the main valve, and the medium flows. When the wire is out of power, the magnetic force disappears and the kinetic core closes the lead entrance with the re-entry of the spring, at which point the medium flows from the flat hole, increases the upper cavity pressure of the main valve core and moves downwards under the spring force, closing the main valve. The principle of frequentity is the opposite. For example: sla, df (over 15 calibre), zcz, etc. (chart iii is typical of the structure)
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