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High-Strength Flanged Gate Valve Covers from China Suppliers - Factory Direct for Industrial and Commercial Use
Installation Video
Product Reference
1. Example: AF03
A ---- Company brand
F ---- flange gate valve fitting Covers
20 ---- Mold number
2. Customization Info
Special models need to send an email to contact the manufacturer to customize.
3. Colour:
Product Specifications
| Number | D(mm) | Inch | B(mm) | C(mm) | D(mm) |
| AF20 | 219 | 8 5/8 | 290 | 210 | 185 |
| AF21 | 244 | 9 5/8 | 340 | 190 | 215 |
| AF22 | 244 | 9 5/8 | 340 | 190 | 215 |
| AF23 | 273 | 10 3/4 | 380 | 170 | 240 |
| AF24 | 273 | 10 3/4 | 380 | 230 | 240 |
| AF25 | 323 | 12 3/4 | 405 | 230 | 265 |
| AF26 | 323 | 12 3/4 | 405 | 255 | 265 |
| AF27 | 355 | 14 | 355 | 275 | 300 |
| AF28 | 323 | 12 3/4 | 405 | 290 | 265 |
| AF29 | 355 | 14 | 430 | 310 | 300 |
| AF30 | 381 | 15 | 460 | 310 | 310 |
| AF31 | 457 | 18 | 490 | 405 | 345 |
| AF32 | 508 | 20 | 520 | 430 | 345 |
| AF33 | 508 | 20 | 520 | 430 | 345 |
| AF34 | 584 | 23 | 560 | 530 | 405 |
| AF35 | 635 | 25 | 610 | 635 | 430 |
| AF36 | 762 | 30 | 635 | 710 | 485 |
Technical Support
Aohuan provides insulation and external protection not only with high-quality composite PVC external protection system material products, but also with its rich experience in the market of installation and application of insulation external protection and advanced application programs.
- Choose the most suitable thermal insulation and external protection system based on the specific working conditions
- Technical Reform of Existing Thermal Insulation and External Protection
- A brand-new tailored heat preservation and exterior protection product with special-shaped structure
- Product Maintenance Training
Physical Property
| Performance | Basis of testing | Testing result |
| Flame | ASTM E84 | ≤25 |
| Smog | ASTM E84 | ≤50 |
| Specific gravity | ASTM 792 | 1.46 |
| Anti-swelling strength | ASTM D638 | 7 .000(@yield lb∕㏑²) |
| Tensile capacity | ASTM D638 | 400.000(PSI) |
| Pendulum impact | ASTM D256 | 15.0(ft.1b.in) |
| Aging property | ASTM E96 | 0.03(@0.30") |
| Conductivity | ASTM D257 | Nil |
| Anaerobic index | GB /T2406.2-2009 | 33.1% |
| Service life | Actual life of use | ＞ 10 years |
Area of Application
Aohuan composite PVC-based material forming and exterior protection materials can be widely applied in commercial, industrial and civil both indoor and outdoor; The exterior protective material of composite PVC base material is suitable for various pipelines and equipment exterior protective systems with temperature ranging from – 37 ℃ to 260 ℃ , but the exterior surface temperature of insulation layer is lower than 66 ℃ (the national standard is lower than 50 ℃ ).
- Microelectronics, Photovoltaic, Food, Beverage, Light Industry
- Biopharmaceutical, Commercial, Civil Building, Oil Drilling Platform
- External Insulation of Petroleum, Chemical Industry, Newly Built and Reconstructed Industrial Workshops and Tanks
Frequently Asked Questions
What temperature range is suitable for Aohuan PVC protective materials?
The exterior protective material is designed for pipelines and equipment within a temperature range of -37℃ to 260℃. However, the outer surface temperature of the insulation layer must remain below 66℃ (or below 50℃ to meet national standards).
What is the estimated service life of these PVC-based forming materials?
Based on actual application and testing, the service life of Aohuan composite PVC-based exterior protection materials is greater than 10 years.
Can I request customized models for special structures?
Yes. For special models or custom shaped structures, you can send an email directly to the manufacturer to initiate the customization process.
What industries and areas can apply Aohuan composite PVC materials?
These materials are widely applied in commercial, civil, and industrial fields (indoor and outdoor), including microelectronics, photovoltaics, food and beverage, biopharmaceuticals, oil drilling platforms, petroleum, chemical industries, and industrial workshops.
How does the material perform in terms of fire and smoke safety?
According to ASTM E84 testing standards, the material achieves a flame spread rating of ≤25 and a smoke developed index of ≤50, ensuring high safety and compliance.
What kind of technical support does Aohuan provide?
Aohuan offers comprehensive support, including selecting the best insulation system for specific working conditions, technical reform of existing systems, custom product designs for special structures, and product maintenance training.