Compressed-air-driven quarter-turn shutoff on a PVC, CPVC, PP, or PVDF ball valve body — fast, repeatable automation for process and utility lines with air supply available.
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 Pneumatic Actuated Plastic Ball Valves Manufacturers and Custom Pneumatic Actuated Plastic 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
Pneumatic actuated plastic ball valves combine a corrosion-resistant PVC, CPVC, PP, or PVDF ball valve body with a double-acting or spring-return pneumatic actuator mounted on a standard ISO 5211 pad. Compressed air drives the actuator's piston or rack-and-pinion mechanism to rotate the ball a full 90 degrees, giving fast, repeatable open/close cycling that a manual lever cannot match on lines that are automated, remotely controlled, or cycled frequently throughout the day.
Because the valve body keeps the same chemical-resistant construction as its manually operated counterpart, pneumatic actuation can be added to PVC, CPVC, PP, or PVDF valves without changing the wetted materials. Solenoid valves, limit switch boxes, and positioners can be fitted to the actuator for remote signaling, position feedback, or throttling control, making this configuration the standard choice for PLC- or DCS-controlled batching, dosing, and process isolation systems.
Compressed air is already available in most process plants, making pneumatic actuation the fastest and most cost-effective way to automate chemical-resistant shutoff.
The valve body material is selected for chemical service, while the actuator housing is chosen for the ambient environment.
| Component | Material Options | Selection Basis | Notes |
| Valve Body | PVC-U, CPVC, PP, PVDF | Matched to the process fluid and temperature | Wetted parts unchanged from manual valve |
| Actuator Housing | Anodized aluminum or glass-reinforced nylon (PA66) | Ambient environment, indoor/outdoor duty | Powder-coated aluminum for corrosive atmospheres |
| Actuator Type | Double-acting or spring-return (fail-safe) | Whether fail-safe closing is required on air loss | Spring-return closes or opens on air failure |
| Mounting Bracket | Stainless steel or coated steel | Connects actuator to valve ISO 5211 pad | Sized to the valve's mounting pattern |
| Item | Description |
| Valve Type | Pneumatically actuated two-way plastic ball valve |
| Body Material | PVC-U, CPVC, PP, or PVDF |
| Seat / Seal Material | PTFE seats; EPDM or FPM seals |
| Size Range | DN15 – DN100 (1/2 inch – 4 inch) |
| End Connection | Socket, threaded, or flanged |
| Working Pressure (valve) | Up to 230 psi (16 bar) at 20°C, material dependent |
| Working Temperature | -10°C to 99°C, material dependent |
| Actuator Type | Double-acting or spring-return |
| Air Supply | Clean, dry compressed air, typically 40–90 psi (3–6 bar) |
| Cycle Time | Typically 0.5–3 seconds depending on size and actuator |
| Mounting Standard | ISO 5211 direct mount |
| Optional Accessories | Solenoid valve, limit switch box, positioner, air filter/regulator |
Both automate the same valve body; the choice usually comes down to what utility is already available and how fast the cycle needs to be.
| Factor | Pneumatic Actuated Valve | Electric Actuated Valve |
| Power Source | Compressed air | Electrical supply (AC or DC) |
| Cycle Speed | Very fast, typically under a few seconds | Generally slower, smoother travel |
| Fail-Safe Option | Spring-return closes or opens automatically on air loss | Requires battery backup for fail-safe behavior |
| Hazardous Areas | Naturally suited, no electrical components at the valve | Requires explosion-proof rated actuator |
| Infrastructure Needed | Compressed air distribution to each valve | Electrical wiring and control cabling |
| Position Feedback | Available via limit switch box accessory | Often integrated with modulating control options |
A pneumatic actuator bolts onto the valve's ISO 5211 pad, with the drive coupling engaging the stem to rotate the ball.
Inspection covers both the valve body and the actuator's air-driven cycling before the two are shipped as a matched assembly.
Actuator torque must exceed the valve's break-to-open and running torque at the available air pressure, with a safety margin for aging seats.
| Valve Size | Typical Actuator Size | Notes |
| DN15 – DN25 | Compact double-acting or spring-return | Fits small dosing and instrumentation lines |
| DN32 – DN50 | Mid-size double-acting or spring-return | Common on process and utility isolation points |
| DN65 – DN100 | Larger actuator with higher output torque | Sized with a safety factor above measured seat torque |
Payment: T/T (bank transfer), L/C, and PayPal are accepted, with flexible terms for repeat orders. A deposit is typically required to confirm production of matched valve-actuator assemblies.
Shipping: Sea freight (FCL/LCL) for bulk orders, air freight for time-sensitive automation projects, and courier for samples. Assemblies ship pre-mounted and tested in wooden crates.
Delivery: Shipment from the nearest available port or airport, with door-to-door, FOB, CIF, or EXW terms on request.
Each assembly is covered under a standard warranty against manufacturing defects in material and workmanship, generally valid for 12 months from the shipment date, covering both valve and actuator.
Overview A free-moving ball that seals the line
Overview Compressed-air operation for automated
Overview Motor-driven shutoff for remote, wired
Overview A reinforced body engineered for the up
Overview Built for corrosive and high-purity flu
Overview A slim wafer body that clamps between s
Overview A raised-seat body geometry that reduce
Overview Automatic backflow prevention in corros
Overview A single-piece flanged body for direct
Share your valve material, size, air supply pressure, and fail-safe requirements, and get an actuator sizing recommendation.
Start your cooperation journey with Baodi
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
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