What type of control valve is suitable for measuring asphalt?
Thread Content
May I ask the experts which control valve is suitable for regulating the asphalt flow rate, given a pressure of 4 MPa and a temperature above 300 degrees?
You can use an angular control valve. Temperature and pressure are not an issue.
You can try a two-seat pneumatic diaphragm control valve; just choose one designed for high temperatures. Of course, there are many other control valves that are also very useful. The only reason I recommend it to you here is that it’s inexpensive and easy to maintain – all you need to do is remove the soot buildup each time production stops. Moreover, everyone is very familiar with this type of control valve.
Use a high-temperature resistant pneumatic single-seat control valve.
Why not consider using an inverter to control the pump’s speed? Although the initial investment is higher, it **extends the service life of the pump’s seals**. It also saves time and money on the maintenance of control valves.
I suggest using a corner valve; preventing clogs is the most important thing!
It depends on the size of your pipeline. If the pipe diameter is not too large, it’s better to use a corner valve!
Angle valves work, and eccentric rotary valves can also be considered. The flow path is simple, and temperature, pressure, and viscosity can be overcome; however, the flow rate characteristics are not good enough.
Could you introduce corner valves? What are the disadvantages of using a single-seat valve? Thank you!
What does \"not very big\" mean? 8\" Is that big?
A pneumatic angle control valve can be used! It has good anti-blocking performance! Alternatively, a ball valve (high-temperature type) can also be used
An eccentric ball valve is the best choice, one with a self-cleaning function; angle valves are also an option
Why not consider butterfly valves? They have low resistance, and it seems that the requirements regarding flow characteristics for asphalt aren’t very strict; butterfly valves will be sufficient for this purpose.
The internal structure should be as simple as possible; it’s also best to have a thermal insulation jacket. The valve stem should be extended and equipped with cooling features
The viscosity at the outlet is high and the temperature is high. I believe it is better to use V-type ball valves in equal proportions