PVC Ball Valve
Raw Materials: PVC
Standard: ISO 4427/ EN12201/ AS/NZS 4130/ SANS 4427/ ASTM F714/ ASTM D 3035
Size: 20mm-110mm (Can Be Customized)
Pressure: SDR11-PN16 Bar, SDR13.6-PN12.5 Bar, SDR17-PN10 Bar, SDR21-PN8 Bar, SDR26-PN6 Bar
Certificate: ISO 14001, ISO 9001, OHSAS 18001, CE BS EN 12001 Certification
Contact Us
- +86 15093100892
- inquiry@phtopindustry.com
- No.86 Jingsan Rd, Jinshui District, Zhengzhou City 45000, china
product category
Product Overview
PVC Ball Valve is a fluid control valve made of high-strength polyvinyl chloride (PVC) material, which can achieve fast opening and closing and flow regulation by rotating the ball. With its excellent corrosion resistance and lightweight characteristics, PVC Ball Valve is widely used in chemical industry, water treatment, irrigation system, building water supply and drainage, etc., and is particularly suitable for conveying corrosive media such as acid, alkali, and salt.
PVC Ball Valve Features
Excellent corrosion resistance: Made of high-quality PVC/UPVC/CPVC materials, it can withstand corrosion from a variety of chemical media
Low fluid resistance: The full-bore design allows almost no pressure loss when the fluid passes through
Easy operation: 90° rotation can achieve fast opening and closing, and the operating torque is small
Good sealing performance: PTFE or EPDM sealing ring is used to ensure zero leakage
Lightweight design: The weight is only 1/5 of that of metal valves, and installation and maintenance are more convenient
Long service life: wear-resistant and anti-aging, normal use can reach more than 10 years
Technical parameters
| Item | Parameter Description |
| Nominal Diameter | DN20–DN110 |
| Nominal Pressure | PN1.0–PN1.6MPa |
| Connection Type | Threaded, Flanged, Union |
| Applicable Temperature | -10℃ to +60℃ (up to 90℃ with special materials) |
| Applicable Medium | Water, air, acid-alkali solutions, oils, etc. |
| Actuation Method | Manual (handle), electric, pneumatic |
Main types
Full-bore ball valve: the flow channel diameter is consistent with the inner diameter of the pipe, and the pressure loss is minimal
Reduced-bore ball valve: the flow channel diameter is smaller than the inner diameter of the pipe, suitable for low-pressure systems
Three-way ball valve: can achieve medium diversion or confluence
Electric/pneumatic ball valve: suitable for automatic control systems
PVC Ball Valve Application areas
Water treatment system: pure water, sewage, seawater treatment
Chemical industry: acid and alkali transportation, chemical reagent pipelines
Irrigation system: agricultural drip irrigation, sprinkler irrigation network
Building water supply and drainage: tap water, reclaimed water system
Food and medicine: sanitary fluid transportation
Selection guide
Corrosive media: choose UPVC or CPVC material
High temperature medium: choose CPVC or special temperature resistant type
High pressure system: choose thickened valve body design
Automation control: with electric or pneumatic actuator
Our advantages
Use imported raw materials, products passed ISO9001 certification
Strict quality inspection, each valve is pressure tested
Complete specifications, support non-standard customization
Provide professional technical support and after-sales service
Installation precautions
Clean the pipeline before installation to avoid impurities damaging the sealing surface
Do not use tools to forcefully turn the handle
Pay attention to the medium flow direction indication during installation
Check the sealing performance regularly
Specification
| Product name | PVC Ball valve |
| Size available | DN20mm, 25mm, 32mm, 40mm, 110mm |
| Pressure Rating | SDR11，SDR13.6，SDR17，SDR21，SDR26 |
| Material | PVC |
| Color available | White or Grey, or as per request |
| Sample available | Available |
| Joint method | Solvent Cement |
What are PVC ball valves used for?
1. Fluid on-off control
Quickly cut off the medium: The pipeline can be fully opened or closed by rotating the handle 90°, which is simple and quick to operate.
Emergency cut-off: The fluid can be quickly cut off when the pipeline leaks or the system is maintained.
2. Flow regulation
Partial opening to adjust the flow: By controlling the rotation angle of the ball (non-fully open/fully closed state), the medium flow can be accurately adjusted (Note: long-term half-open state may affect the life of the seal).
3. Medium distribution and switching
Three-way ball valve: used for diversion, confluence or switching flow direction (such as T-type three-way valve can achieve three-way control).
Do PVC ball valves leak?
PVC ball valves can achieve zero leakage under normal use (sealing level can reach ANSI VI level), but its sealing performance depends on factors such as material quality, installation method, and use environment. The following is a detailed analysis:
1. Possible causes of leakage
| Leakage Cause | Description | Solution |
| Seal Aging | EPDM/PTFE seals harden or crack after prolonged exposure to chemicals or heat | Regularly inspect and replace seals every 3–5 years (shorter cycle in chemical environments) |
| Ball Surface Damage | Weld slag or particles in the pipeline cause ball surface abrasion | Thoroughly clean the pipeline before installation; install a filter for media with particles |
| Improper Installation | Misaligned or overtightened threaded/flanged connections deform the valve body | Tighten bolts evenly in a crisscross pattern using a torque wrench (follow manufacturer specs) |
| Pressure/Temperature Exceeded | Exceeding PN1.6MPa or 60℃ (for PVC) increases seal failure risk | Use CPVC/PVDF for high pressure; switch to metal seats in high-temperature environments |
| Harsh Operation | Rapid switching or excessive force on the handle damages sealing surfaces | Rotate handle slowly; reduce actuation speed for electric/pneumatic valves |
2. How to detect leaks?
Bubble test: Close one end of the valve, inject water and pressurize it to observe whether there are bubbles seeping out from the other side.
Pressure gauge monitoring: Keep the valve closed, and if the system pressure continues to drop, there may be a leak.
Visual inspection: There are crystallization and wet marks on the valve stem or connecting flange.
3. Measures to prevent leaks
Selection stage:
For corrosive media, use PTFE valve seats (acid and alkali resistance is better than EPDM).
For frequent switching occasions, choose metal hard-sealed ball valves (but the cost is higher).
Installation stage:
Ensure the coaxiality of the pipeline and the valve to avoid stress distortion.
Wrap raw tape around the threaded connection or apply PVC special glue.
Use and maintenance:
Lubricate the valve stem regularly (food-grade silicone grease).
Empty the pipeline when it is not used in cold areas to prevent frost heave from damaging the valve body.
4. Emergency treatment for leaks
Minor leakage: Try to tighten the flange bolts or threaded connectors.
Valve seat leakage: After closing the upstream and downstream pressures, replace the sealing ring (some ball valves can be repaired online).
Valve body rupture: stop using immediately and replace the entire valve (PVC valves cannot be repaired by welding).
What is the pressure rating of a PVC ball valve?
1. Standard pressure rating
UPVC ball valve: usually PN1.0~PN1.6MPa (10~16bar).
CPVC ball valve: Due to higher temperature resistance, some models can reach PN1.6MPa, but the pressure resistance will be reduced at high temperature.
PVDF/PPH ball valve: Stronger pressure resistance, some industrial-grade products can reach PN1.6MPa or even higher.
2. Effect of temperature on pressure resistance
UPVC: It can withstand 100% of the nominal pressure at 23℃, but the pressure resistance may drop to 22% when the temperature rises to 60℃.
CPVC: The pressure resistance level may drop to 20% at 93℃ (200℉).
PVDF: It can still maintain high pressure resistance at 120℃.
3. Special application restrictions
Modified PVC ball valve: Some manufacturers stipulate that the working pressure does not exceed 1.0MPa and the temperature is ≤45℃.
Large-diameter ball valves (such as DN200 and above): Be cautious when using them under long-term high pressure. It is recommended to choose a thickened design.
4. International standard adaptation
Complies with ANSI, DIN, JIS and other standards. Some products support PN10/PN16 grades
