PVDF Pneumatic Flanged Ball Valve
The Huiya PVDF pneumatic flanged ball valve brings PVDF’s extreme chemical resistance to larger-diameter, higher-pressure and high-vibration lines. Moulded from 100% virgin PVDF and rated to 120°C, it resists 98% and fuming sulfuric acid, hydrofluoric acid, aqua regia, halogens and aggressive solvents. Its one-piece flanged body bolts directly to ANSI, DIN or JIS pipework — and to metal, FRP or PTFE-lined equipment that PVDF cannot be fused to.
At a Glance
- Body & ball: 100% virgin PVDF (Arkema Kynar® / Solvay or domestic)
- Size range: DN25–DN200 (1″–8″)
- Pressure rating: PN10
- Max temperature: up to 120°C
- Flange standards: ANSI / DIN / JIS
- Construction: integral one-piece flanged body (no end-connector O-rings)
- Seat: PTFE — Seals: FKM or EPDM (media-matched)
- Actuation: pneumatic (double-acting / spring-return) or manual
Available in imported virgin Arkema/Solvay PVDF for critical, high-purity duty, or quality domestic virgin PVDF for cost-sensitive projects — never recycled. (See why virgin resin matters in our PVDF Chemical Resistance Guide.)
Key Features
- One-piece (integral) flanged body — flange and valve moulded as a single solid PVDF piece, eliminating end-connector O-rings for a static, root-leak-proof barrier
- Flange drilling to ANSI, DIN and JIS — bolts straight onto existing pipework and onto metal / FRP / lined equipment
- 100% virgin PVDF; resists 98% and fuming sulfuric, 70% nitric, 40–55% HF, aqua regia, halogens and solvents
- Full-port bore for unrestricted flow
- Pneumatic actuator (double-acting or spring-return); manual version available
- PTFE seat; FKM or EPDM seals matched to your media
- Sizes DN25–DN200, PN10
Technical Specifications
- Body / ball: virgin PVDF (Arkema / Solvay or domestic)
- Seat: PTFE | Seals: FKM or EPDM (media-matched)
- Size: DN25–DN200 (1″–8″)
- Pressure: PN10 (de-rates with temperature)
- Temperature: up to 120°C
- Flange standards: ANSI / DIN / JIS
- Actuation: pneumatic; manual option
Unlike standard manual valves, our one-piece flanged ball valve features a built-in ISO 5211 mounting pad and a reinforced square stem. This allows you to easily install your own pneumatic or electric actuators without needing extra brackets or couplings.
| DN | D1 | D — Flange OD | L | b | ||
|---|---|---|---|---|---|---|
| DIN | JIS | ANSI | ||||
| 15 | 95 | 65 | 70 | 60 | 100 | 15 |
| 20 | 105 | 75 | 75 | 70 | 120 | 17 |
| 25 | 115 | 85 | 90 | 79 | 140 | 17 |
| 32 | 135 | 100 | 100 | 89 | 160 | 18 |
| 40 | 145 | 110 | 105 | 98 | 165 | 18 |
| 50 | 160 | 125 | 120 | 121 | 180 | 20 |
| 65 | 180 | 145 | 140 | 140 | 220 | 22 |
| 80 | 195 | 160 | 150 | 152 | 250 | 22 |
| 100 | 215 | 180 | 175 | 190 | 280 | 25 |
| 125 | 245 | 210 | 210 | 216 | 325 | 30 |
| 150 | 280 | 240 | 240 | 241 | 355 | 30 |
| 200 | 335 | 295 | 290 | 298 | 405 | 35 |
All dimensions in mm. D1 = flange thickness diameter reference, D = flange outer diameter (varies by standard), L = end-to-end length, b = flange thickness. Bolt count and bolt-hole diameter vary by standard and size; full drilling templates for ANSI Class 150, DIN PN10, and JIS 10K available on request.
Actuator Torque Requirements
| Size | DN15 | DN20 | DN25 | DN32 | DN40 | DN50 | DN65 | DN80 | DN100 |
|---|---|---|---|---|---|---|---|---|---|
| Torque (N·m) | 6 | 8 | 10 | 12 | 15 | 20 | 40 | 45 | 65 |
Break torque values for actuator sizing. Add a safety factor when selecting the actuator; our engineering team can recommend the correct actuator for your operating pressure.
When to Specify a Flanged PVDF Ball Valve
A true union valve is ideal for small-bore lines you service often. Step up to a flanged valve when your project hits any of these four conditions.
1. High vibration or water hammer. Near large pump discharges, or where pneumatic actuators cycle fast and hard, constant mechanical stress can slowly back off the threaded union nuts of a true union valve — risking micro-leaks of dangerous acid. A flanged joint, secured by high-tensile bolts and an FKM/PTFE gasket, gives absolute mechanical rigidity that will never vibrate loose.
2. Large diameter (DN50 / 2″ and up). As bore increases, so does the size and weight of the actuator. A true union body carries that heavy top-load on plastic threads. A one-piece flanged valve transfers the actuator’s weight and torque straight into the rigid pipe flanges — preventing pipeline sag and thread fatigue.
3. Connecting to metal, FRP or lined equipment. You cannot heat-fuse PVDF to a titanium reactor, an FRP tank or a PTFE-lined steel pipe. Flanged valves are the universal cross-material interface (ANSI 150, DIN PN10/16, JIS 10K): bolt the PVDF valve straight to the equipment flange with a full-face gasket for a perfect, stress-free transition.
4. Zero-tolerance hazardous media. True union ends rely on a sliding O-ring — a dynamic seal. Our integral flanged body moulds the flange and valve as one solid piece of virgin PVDF, eliminating the end-connector O-rings entirely: a static, root-leak-proof barrier. For fuming sulfuric, concentrated HF or highly toxic solvents, fewer seal points means maximum safety.
Need to remove the valve for frequent service on a smaller line instead? See our PVDF true union ball valve.
Chemical Resistance
Virgin PVDF resists 98% and fuming sulfuric acid, 70% nitric, 40–55% hydrofluoric acid, aqua regia, chlorine, bromine and aromatic/chlorinated solvents up to 120°C. It is not suitable for ketones (acetone), THF, ethers or strong amines. See our PVDF Chemical Resistance Guide for the full media-by-media table and seal recommendations.
Applications
Large-bore acid and oxidiser transfer; pump isolation on aggressive lines; reactor feed and discharge interfacing with metal, FRP or lined equipment; chlor-alkali and chemical distribution; electroplating and semiconductor chemical supply.
Working in less extreme conditions? This flanged ball valve also comes in PVC, CPVC and PPH. For smaller lines you service often, thePVDF true union ball valve removes without cutting and re-fusing the pipe; for large-bore isolation at lower weight and cost, the PVDF butterfly valve. Confirm compatibility in our PVDF Chemical Resistance Guide, or use the free Material Selection Service. View all PVDF valves.
Frequently Asked Questions
Flanged or true union — which do I need?
Flanged for large bores, high vibration/water hammer, connecting to metal/FRP/lined equipment, or zero-tolerance media. True union for smaller lines you service often.
Which flange standards can you supply?
ANSI, DIN and JIS — the valve bolts straight onto your existing pipework.
Why a one-piece flanged body?
It moulds flange and valve as one solid PVDF piece, removing the end-connector O-rings and the leak points that go with them.
Imported or domestic PVDF?
Imported Arkema/Solvay for high-purity and zero-tolerance duty; domestic virgin PVDF for cost-sensitive service. Both 100% virgin.
Why Buy from Huiya
Two virgin-PVDF grades (never recycled) · MTR on request · custom seal configuration · complete PVDF system from one factory · ANSI/DIN/JIS · factory-direct pricing.