Quarter-turn shutoff built from PVC, CPVC, PP, and PVDF for corrosive, high-purity, and general industrial fluid lines — corrosion-free, lightweight, and ready for manual or automated operation.
Ningbo Baodi Plastic Valve Co., Ltd. traces its origins back to 1979, with its predecessors being Zhenhai Chemical Valve Factory and Beilun Plastic Valve Factory. The company is one of the earliest Industrial Thermoplastic Ball Valves Manufacturers and Custom Industrial Thermoplastic Ball Valves Factory in China to design and produce industrial plastic valves and receive acceptance from the Ministry of Chemical Industry. In 1979, the company manufactured its first plastic diaphragm valve, which passed the technical appraisal of the Ministry of Chemical Industry in 1983. In 1992, the company invented the one-piece flange ball valve, a structural design that has since become the most widely used plastic valve product in chemical-related industries. The development history of the company and its predecessors also represents an important chapter in the application of plastic valves in China's industrial production.
In 2006, the company expanded its product line to cover industrial plastic pipes and fittings, becoming one of the first domestic enterprises to apply CPVC material in the production of industrial-grade piping valves. Over more than 40 years since its establishment, the company has designed and manufactured various plastic valves for the most demanding industries. It has served tens of thousands of enterprises both domestically and internationally, exporting to more than 60 countries, and has consistently remained a leading manufacturer of industrial thermoplastic valves and piping systems. Our professional service and stable quality have always been well received and recognized by customers.
Baodi ranks among the global leaders in the number of product categories, capable of fully covering industrial plastic pipe and valve requirements. The company has obtained ISO 9001, ISO 14001, and ISO 45001 system certifications, as well as the national special equipment pressure piping component manufacturing license. It is recognized as a National High-Tech Enterprise and a Ningbo City Specialized and Sophisticated Enterprise. Baodi is a principal drafter of the national standard for plastic diaphragm valves and the chemical industry standards for plastic diaphragm valves, plastic ball valves, and plastic check valves.
Design Idea
2D Drawing
3D Modeling
Mold Fabrication
Prototype Testing
Full-scale production
Industrial thermoplastic ball valves are precision flow-control components engineered for corrosive, high-purity, and general fluid-handling systems where conventional metal valves fall short. Molded from advanced engineering plastics such as PVC, CPVC, Polypropylene (PP), and PVDF, these valves combine outstanding chemical resistance with a lightweight, cost-effective construction that has made them a standard choice across chemical processing, water and wastewater treatment, semiconductor manufacturing, electroplating, and general industrial piping networks.
Unlike metallic ball valves that often require protective linings or costly alloys to withstand aggressive media, thermoplastic ball valves are inherently resistant to a broad range of acids, alkalis, salts, and solvents without any coating. Most models use a true union body design, allowing the valve to be fully removed from the pipeline for cleaning, inspection, or replacement without disturbing the surrounding pipework — reducing maintenance downtime and labor cost. The floating ball design, paired with PTFE or reinforced PTFE seats, provides a tight, bubble-tight shutoff even after thousands of open-close cycles, while requiring only a 90-degree quarter turn for full operation.
Each valve is built with a double-block seat arrangement and a self-adjusting stem seal, so sealing performance remains consistent as seats wear in over time. Depending on the material selected, these valves handle working pressures from roughly 150 psi up to 230 psi at ambient temperature, and operating temperatures ranging from sub-zero conditions up to 99°C for PVDF variants, covering the vast majority of industrial process requirements. Because the wetted parts contain no metal, there is no risk of galvanic corrosion, ion contamination, or scale build-up, which is especially important for ultrapure water lines and sensitive chemical dosing systems.
A standard ISO 5211 mounting pad on the valve top means manual lever operation can be converted into pneumatic or electric actuation at any time, making it straightforward to integrate the valve into automated process control systems or remote monitoring setups without changing the valve body itself. For plant engineers and procurement teams, the appeal goes beyond raw chemical compatibility: lighter weight lowers freight and installation cost, corrosion-free construction extends service life in harsh media, and simple quarter-turn operation reduces training time for maintenance staff — keeping total cost of ownership under control over a multi-year service period.
Broad chemical compatibility and corrosion-free construction make these valves suitable across a wide range of process industries and utility systems.
Body material is the most important decision when specifying a thermoplastic ball valve — it determines chemical compatibility, temperature range, and long-term service life.
| Material | Temperature Range | Typical Strengths | Common Use |
| PVC-U | 0°C to 60°C | Strong resistance to most acids and alkalis, economical, widely available | General water treatment, chemical transfer, utility piping |
| CPVC | 0°C to 95°C | Higher temperature tolerance than PVC-U with similar chemical resistance | Hot water lines, higher-temperature chemical processes |
| PP | 0°C to 90°C | Good resistance to solvents and a wide range of acids and bases, lightweight | Acid / alkali dosing, plating lines, general chemical processing |
| PVDF | -20°C to 99°C | Outstanding resistance to strong oxidizers, halogens, and most organic solvents | High-purity, aggressive chemical, and semiconductor applications |
Chemical compatibility, in short: PVC-U and CPVC handle most dilute acids, alkalis, and salts well; PP adds stronger resistance to organic solvents and higher-concentration alkalis; PVDF offers the broadest resistance, including to strong oxidizing agents such as chlorine and bromine, and is preferred for the most aggressive media. Because concentration and temperature both affect resistance, it is recommended to confirm the exact media and operating conditions before finalizing material selection.
| Item | Description |
| Valve Type | Two-way / three-way thermoplastic ball valve, true union body |
| Body Material | PVC-U, CPVC, PP, PVDF |
| Ball Material | PVC-U, CPVC, PP, PVDF (matching body material) |
| Seat Material | PTFE / reinforced PTFE |
| Seal Material | EPDM / FPM (Viton) |
| Size Range | DN15 – DN100 (1/2 inch – 4 inch) |
| End Connection | Socket (solvent weld), threaded (BSP / NPT), or flanged |
| Working Pressure | Up to 230 psi (16 bar) at 20°C, rating decreases with temperature |
| Working Temperature | -10°C to 99°C, depending on material selected |
| Sealing Performance | Bubble-tight (zero-leakage) shutoff |
| Operation | Manual lever, or pneumatic / electric actuator via ISO 5211 mounting pad |
| Port Type | Full port or standard port available |
| Design Reference | ISO, DIN, and ASTM dimensional standards |
For corrosive or high-purity fluid systems, thermoplastic ball valves offer several practical advantages over traditional metal ball valves.
| Factor | Thermoplastic Ball Valve | Metal Ball Valve |
| Corrosion Resistance | Naturally resistant to acids, alkalis, and salts | Requires special alloys or linings for corrosive media |
| Weight | Significantly lighter, easier to install and support | Heavier, may require additional pipe support |
| Ion Contamination | None — suitable for ultrapure and sensitive media | Possible ion leaching in aggressive or high-purity applications |
| Maintenance | Low; true union design allows quick in-line service | May require more frequent inspection in corrosive service |
| Initial Cost | Generally lower for equivalent corrosion resistance | Higher when alloy or lined construction is required |
| Pressure / Temperature Ceiling | Moderate, suited to most process conditions | Higher ceiling, better for extreme pressure or temperature |
Each numbered part below corresponds to the labeled cross-section, showing how the valve achieves reliable, low-maintenance shutoff.
A defined sequence of inspections and tests helps ensure consistent sealing performance and dimensional accuracy.
All valve bodies share the same ISO 5211 mounting pattern, so it is possible to start with manual operation and upgrade later without replacing the valve body.
| Operation Type | Best Suited For | Key Characteristics |
| Manual Lever | Local, infrequent on/off operation | Lowest cost, no power source required, simple operation |
| Pneumatic Actuator | Fast-cycling or hazardous-area applications | Quick response, suited to automated lines with compressed air available |
| Electric Actuator | Remote or precise on/off and modulating control | Runs on electrical power, integrates with control systems and remote monitoring |
Payment: T/T (bank transfer), L/C, and PayPal are accepted, with flexible arrangements for repeat orders. A deposit is typically required to confirm production, with the balance settled before shipment or against shipping documents.
Shipping: Sea freight (FCL/LCL) for large-volume orders, air freight for time-sensitive shipments, and express courier for samples or small parcels. Valves are packed in export cartons or wooden crates with anti-collision padding, palletized for container loading.
Delivery: Orders can ship from the nearest available port or airport, with door-to-door, FOB, CIF, or EXW terms available on request.
Each valve is covered under a standard warranty against manufacturing defects in material and workmanship, generally valid for 12 months from the shipment date, with extended terms available for qualified long-term orders.
Overview CPVC shutoff engineered for hot water a
Overview The full diaphragm valve range, from bo
Overview Automatic backflow prevention in corros
Overview A space-saving body for tight skids and
Overview Union connections on both ends for full
Overview A free-moving ball that seals the line
Overview Lift-type checks designed for upward fl
Overview PVC-U shutoff with a removable true uni
Overview Handwheel-operated diaphragm shutoff fo
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Contact
baodivalve@bdsjfm.com
+86-574-86817753
+86-574-86812190
After-Hours Hotline：
+86-18395898313
NO.42 Yongjiang Road, Beilun,Ningbo city, Zhejiang province,P.R.China
Custom Industrial Thermoplastic Ball Valves Manufacturers
