Product Description

Fluoroplastic-Lined Anti-Corrosion Cut-off Ball Valve 304/316 pneumatic stainless steel valve salf-control ball valve(ZPR700 series)

The ZPR710F Fluoroplastic-lined O-shape Cut-off Ball Valve features a valve body and inner parts that come into contact with the fluid, which are lined with fluoroplastic through a high-temperature molding process. Additionally, the inner cavity of the metal valve body undergoes gear machining to ensure complete bonding between the lining material and metal, thereby enhancing both service life and performance. This valve effectively isolates corrosive mediums from contacting the valve body while preventing any corrosion of metallic materials within it. With excellent sealing performance, sensitive action, precise flow characteristics, it finds extensive applications in environments involving strong corrosive media such as acids, alkalis, salts as well as volatile and penetrative gas or liquid media.

1. Corrosion-resistant: It can withstand the corrosion of various media, including concentrated nitric acid and aqua regia.
2. High flow capacity with unrestricted medium flow direction.
3. Excellent sealing performance: Utilizes a combination structure of imported and domestic V-shaped packing gland to ensure zero external leakage.
4. Minimal leakage due to the soft sealing with fluoroplastic of the valve core and seat.

Installation Notes

1. Before installation, carefully inspect the valve (Tag No., type, diameter, pressure, material, etc.) to ensure compliance with the required specifications. If the product is labeled with a flow direction indicator on the valve's body that equipped with the pipeline flow direction.If without indicator, no further consideration of flow direction is necessary. 
2. The valves should be vertically installed on horizontal pipelines, with the actuator positioned at the top. It is advisable to avoid installing them at an angle.
3. When connecting pipes and sealing faces are made of metal materials, it is essential to use a fluoroplastic sealing gasket; otherwise, premature damage and leakage may occur on the valve's sealing face. To ensure uninterrupted production during maintenance or failure situations, consider setting up a bypass.
4. The product has been meticulously designed and manufactured according to relevant parameters specified in technical specifications. In case there are changes in usage parameters, please promptly contact our company (special requirements should be communicated prior to placing an order). The product undergoes thorough testing and adjustment before leaving our factory; if possible before installation, conducting additional tests on sealing and external leakage is recommended. Product accessories have already been adjusted to their optimal positions and should not be arbitrarily altered.
5. During system or pipeline flushing and testing procedures, ensure that the valve remains fully open.

Maintenance

1,All fluoroplastic-lined control valves are used in highly corrosive media, and it is essential to wear appropriate protective equipment and strictly adhere to operational procedures during maintenance and repair activities. This will help prevent accidents during disassembly and ensure safety.
2,During maintenance and repair tasks, the operator should position themselves on the side of the product rather than operating from the front. Additionally, for toxic, flammable, explosive media, it is necessary to maintain a safe distance.
3,In case of seal leakage, shut off the signal source to allow automatic valve closure. If there is no further leakage after adjusting the signal drift, it indicates that signal adjustment is required. If leakage persists even after adjustment, shut down the pipeline and inspect for any damage to the seal face. Clean impurities if no damage is found; otherwise replace the valve instead of using it.
4,If packing leakage occurs, tightening the cover nut (3-5 turns) usually resolves this issue. However, if tightening by 5 turns or more still results in leakage, work must be immediately stopped. Close off the pipeline and inspect whether there are cracks or corrosion in the valve body. It is strictly prohibited to replace packing under pressure for fluorine-lined control valves installed on pipelines carrying toxic substances or those prone to flammability/explosiveness/strong corrosion.
5,For working conditions where crystallization of soft materials may occur frequently, special attention should be given to checking for blockages caused by crystallization in order to prevent flow reduction and pressure decrease.

Materials for main parts: