Negotiable
The date of payment from buyers deliver within days
Beijing
Long-term effective
2021-10-12 12:23
499
Company Profile
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Contact：aimiliuti(Mr.)
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Area：Beijing
Address：Beijing
Website：http://www.zzvalvecn.com/ http://aimiliuti.nhdikang.com/
Pneumatic GG25 Diaphragm Valve relies on a soft rubber film or plastic film to control fluid movement. For example, the commonly used diaphragm valve materials are divided into cast iron diaphragm valves, cast steel diaphragm valves, stainless steel diaphragm valves, and plastic diaphragm valves. According to the lining material, it is divided into imported rubber-lined diaphragm valve and imported fluorine-lined diaphragm valve. According to the operation mode, it is divided into imported manual diaphragm valve and imported pneumatic diaphragm valve.
Specifications
Connection type: Flange |
Pressure of work: 1.0Mpa |
Dimension standard: GB, BS, ANSI, JIS |
Working temperature: ≤80℃, ≤100℃, ≤120℃, ≤150℃ |
Valve Body Material: Cast Iron, Ductile Iron |
Diaphragm Material: FEP(F46)/PFA |
Size available: DN15-DN125 |
Actuator Material: Aluminium Alloy |
Actuator type: double acting, single acting(spring return) |
Actuator accessories: Solenoid valve, limit switch box, air regulator, positioner, quick exhaust valve, manual override |
Advantages
① The control mechanism is separated from the medium passage, which not only ensures the purity of the working medium, but also prevents the possibility of the medium in the pipeline from impacting the working parts of the control mechanism. There is no need to use any form of separate seal at the valve stem, unless it is controlling harmful media used in this safety facility;
② Since the working medium is only in contact with the diaphragm and the valve body, both of which can use a variety of different materials, the valve can ideally control a variety of working media, especially suitable for media with chemical corrosion or suspended particles. For example, the chemical corrosion or suspended particles of the media use diaphragm valves.
How to maintain valves
Leakage at the joint of the sealing ring
Reason:
1. The sealing ring is not tightly rolled
2. The sealing ring is welded to the body, and the surfacing quality is poor;
3. The sealing ring connection thread, screw and pressing ring are loose;
4. The sealing ring is connected and corroded.
Maintenance method:
1. The leakage of the seal rolling should be filled with adhesive and then rolled and fixed;
2. The sealing ring should be repaired according to the welding specification. The original surfacing and processing should be removed when the surfacing welding cannot be repaired;
3. Remove the screws and pressure ring to clean, replace the damaged parts, grind the sealing surface of the seal and the connecting seat, and reassemble. For parts with large corrosion damage, welding, bonding and other methods can be used to repair;
4. The connecting surface of the sealing ring is corroded, it can be repaired by grinding, bonding and other methods. If it cannot be repaired, the sealing ring should be replaced.
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