Supply ZXDA industrial pneumatic diaphragm valve, G641 pneumatic diaphragm straight stroke of the piston compartment ..

Industrial pneumatic diaphragm valve, G641 pneumatic diaphragm straight stroke of the piston diaphragm valves, pneumatic industrial pneumatic diaphragm valve diaphragm flange Product Overview Material: WCB structural forms: a direct-Media: weak acid medium standard: Flow direction: Bidirectional parts and accessories: hand wheel Uses: As type (channel position): Second formula Connection: Flange nominal diameter: 100 (mm) mm Operation: manual. Pressure environment: atmospheric. Working temperature: room temperature diaphragm G41F-16C, the conventional diaphragm valve structure and working principle is not the same, it is self-construction, wind power does not require an external supply, it is done through the process medium (air) to complete, compressed air into the chamber through the throttle aperture diaphragm, the stationary state, compressed air inlet pressure and the diaphragm is equal to the gas chamber pressure, diaphragm spring force in closing, not cleaning. Once charged vented, vent gas chamber through the gas vent, the pressure drops, the diaphragm valve is automatically opened, the compressed air enters the filter backflush. After emptying solenoid valve de-energized, the gas chamber to re-establish a balance, closed diaphragm valve. Diaphragm valve is the first one of adjustment, it has the following use characteristics: (1) soft rubber diaphragm valves can cut off media do not leak. (2) the rubber has some corrosion resistance, before the 1960s, there is no better corrosion resistance material, which usually has been deemed to promote the use of corrosion-resistant materials, and even until today. (3) flow path is simple, the "self-cleaning" effect, can be used for dirty media. (4) open feature, but as a corrosion-resistant valve when used, had to use the quick opening of the first part, the effective stroke is short, poor quality adjustment. (5) just like a fatigue test piece, forcing it to fold up and down, easy to destroy, because the diaphragm is an unreliable parts, resulting in shorter valve life, which is a fatal disadvantage. Because of this, the authors have emphasized in recent years: should be eliminated diaphragm valves, ball valves, full-featured ultra-light valve replaced. (6) is closed, the media force the diaphragm up top, unbalanced force larger, a larger actuator thrust, therefore, we must use particularly large, clunky, heavy actuator, the valve becomes weight very heavy, it is ball 2 times 3-4 times full-featured ultra-light valve. (7) In particular, needs to be emphasized is: more and more corrosion-resistant materials, especially in the late 1980s plastic lined process is resolved, Chen Fu ball come out. Since fluorine plastic than rubber corrosion, temperature, and the ball valve core and stainless steel diaphragm valve diaphragm stiffness than ten times stronger, it is proposed in the corrosive medium cut and adjusted occasion, try not to choose diaphragm valves, corrosion-resistant lined ball valve, butterfly valve and single-seat all-tetrafluoroethylene. It might give you an example: In the water treatment system, water desalination valve used on the device, 10 years ago, whether foreign or domestic unit, have chosen plastic lined diaphragm valves, its long service life is about one year, short as three to six months, therefore, constantly replacing the diaphragm. After the selection of ball valves for water treatment, where this issue is resolved well, the life of up to 7 to 8 years, generally used up to 3 to 5 years. Industrial pneumatic diaphragm valve Features: 1. elastic sealing of the shutter to ensure no leakage; 2. streamline the flow channel, so that the pressure loss is small; 3. No stuffing, so there is no leakage; 4. body and cover are separated by an intermediate membrane so that the membrane above the bonnet, stem and other parts from the media erosion; 5. membrane can be replaced, low maintenance costs; diversity 6. lining material, suitable for all kinds of media, and have strength high corrosion resistance and good.