Pneumatic high-temperature ventilation butterfly valve

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Regarding our company's RUNFLOWPneumatic high-temperature ventilation butterfly valveThe characteristics of the products are listed as follows:
1、 Purpose:
Pneumatic high-temperature butterfly valves are widely used in industrial production processes such as environmental protection, metallurgy, mining, and power for automatic or remote control of flow in pipelines.
IIStructural characteristics
The pneumatic high-temperature butterfly valve consists of a high-temperature butterfly valve body component, a pneumatic actuator, a pneumatic locator, and a triple piece. To avoid dust particles in the pipeline affecting valve sealing, wear or jamming of the valve plate, a blowing pipe is installed at the bottom of the valve body to blow the valve body and ensure the sealing of the valve. The valve plate should be set with an eccentricity to prevent butterfly valve jamming caused by thermal expansion.
(1) Valve body components: composed of valve body, shaft, valve plate, sliding bearing, packing, etc
(2) Pneumatic actuator: It consists of a cylinder, transmission housing, swing arm, solenoid valve, air filter pressure reducer, connecting frame, locator, etc.
3、 Working principle
This series of butterfly valves can achieve automatic adjustment function.
(1) Automatic control:
When automatic operation is required, the solenoid valve is powered on, and the valve core of the solenoid valve switches between intake and exhaust, allowing the air source to pass through the air filter and pressure reducer to the solenoid valve controlled cylinder for up and down movement, thereby driving the crank and valve stem, causing the valve plate to rotate 90 ° inside the valve body, thus achieving the purpose of cutting off.

4、 Main performance and parameters:

nominal pressure	0.1MPa
Temperature	800 ° C Maximum allowable temperature 950 ° C
Applicable Medium	Dust containing gas, electric furnace gas, etc
leakage	≤1%
Mpa	0.4-0.6MPa
input/output signal	4～20mA
Instrument section	Adopting intelligent electrical valve positioner
Medium flow rate	≤25m/s

five、Material for main parts

Part name	valve body	Disc	valve stem	filler	lining
material	Q235B	2520	2520	graphite	High temperature resistant castables

six、Installation and maintenance
1. During installation, the gas pipeline should be blown clean with compressed air and the joints should be checked for tightness and reliability.
2. Connect the input standard signal to check the deviation between the starting and ending points of the butterfly valve angle, basic error, dead zone, and mode of action.
3. The ambient temperature for use is -25~60⁰C、 Relative humidity ≤ 95%.
4. The air source pressure used for butterfly valves should be stable at 0.5+Within the range of 0.01MPa and 10%, the gas source should undergo purification treatment such as dust removal, dehydration, and oil removal.
5. Positioners generally do not require repair, simply unscrew the constant current hole component inside the locator and clean it.
6. When installing the valve into the pipeline, it should be ensured that the valve seat is coaxial with the pipeline, and corresponding gaskets should be inserted between the flanges at both ends and the valve body flange. The flange planes on both sides of the pipeline connected to the valve must be ensured to be parallel.

7、 Selection Notice
1. Product name, model, nominal diameter, nominal pressure, working temperature, mode of operation, input signal, power supply voltage, gas source pressure, cut-off time, leakage rate, valve material.
2. Special requirements: Explosion proof, Oil free, Corrosion resistant.
3. If attachments are needed: valve positioner, feedback device, constant point travel switch, solenoid valve, etc
4. For other special requirements, please contact our technical department and we can design and manufacture according to user requirements.
8、 Provide the external dimension drawing when ordering.