The highlight is that the diaphragm separates the lower valve body cavity from the upper valve cover cavity, so that the parts such as the valve stem and valve disc above the diaphragm are not corroded by the medium, eliminating the need for packing seal structure, and will not produce medium leakage. The diaphragm made of rubber or plastic soft seal has good sealing performance. Since the diaphragm is a vulnerable part, it should be replaced regularly according to the characteristics of the medium. Due to the limitation of diaphragm materials, diaphragm valves are suitable for occasions with low pressure and relatively low temperature. PVDF diaphragm valves can be divided into six types according to the structural form: house type, straight-through type, stop type, straight-through type, gate type, and right-angle type; the connection form is usually flange connection; according to the driving mode, it can be divided into manual, electric, and pneumatic. There are three types of drives, among which the pneumatic drive is divided into normally open, normally closed, and reciprocating. Generally, it is not suitable for use in pipelines with temperatures higher than 60 degrees and transporting organic solvents and strong oxidizing media, nor is it suitable for use in pipelines with relatively high pressures.
G41F-10FPVDF diaphragm valve detailed description
Scope of use and structural features: Suitable for conveying and intercepting corrosive media, and adjusting flow rate. According to different materials, the temperature range is -14°C to 100°C, and -40°C to 140°C. The overcurrent components are assembled from PVDF injection molded parts, with excellent corrosion resistance, convenient operation, light weight, and can replace stainless steel valves. The sealing film is made of F46 or PFA, with a folding resistance of ≥1200 times, and corrosion resistance is comparable to F4. Adopt screw lifting structure, large opening and closing torque, and good stability.
Installation and use of PVDF diaphragm valve: When connecting the two end flanges with the pipeline, tighten the bolts evenly to prevent flange deformation and leakage. Rotate the handle clockwise to close, and counterclockwise to open. The opening degree can be judged based on the position of the indicator.
Plastic raw material names and applicable temperatures:
UPVC Hard Polyvinyl Chloride Temperature -10°C ~ 70°C
CPVC Chlorinated Polyvinyl Chloride Temperature -40°C ~ 95°C
RPP Reinforced Polypropylene Temperature -20°C ~ 90°C
PVDF Polyvinylidene Fluoride Temperature 40°C ~ 140°C
Shanghai Huanqi Plastic Pipeline Co., Ltd.
Name: Li Yaoqing
Company phone: 021-57562878
Company fax: 021-57562676
Mobile: 15900400720
Email: twhq29@163.com
Company website: http://www.hqpvc.com
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