Description
XiCheng EP’s φ90mm (3.5 inch) polypropylene manual air valve is a high-performance airflow control component designed for industrial and laboratory ventilation systems. Injection molded from 100% virgin PP resin, this valve delivers excellent corrosion resistance, reliable sealing and precise airflow regulation in harsh chemical environments.
This 90mm manual butterfly valve is the standard size for small-scale ventilation branches, laboratory fume hoods and local exhaust systems. It is fully compatible with our φ90mm PP ventilation pipes and complete range of PP pipe fittings.
Core Advantages of XiCheng PP Manual Air Valves
- Superior Sealing Performance: Diamond-shaped double-blade design with soft overlap, achieving ≤5% air leakage rate
- Excellent Corrosion Resistance: 100% virgin PP construction, resistant to acids (pH 1), alkalis (pH 14) and most chemical fumes
- Precise Airflow Control: Smooth 0-90° rotation allows for accurate adjustment of airflow from 0% to 100%
- Lightweight & Durable: One-piece injection molded body, no rusting or degradation, 15+ year service life
- Easy Installation: Standard socket connection, fits directly into φ90mm PP ducts without additional adapters
- Cost-Effective: Factory direct pricing, large inventory for immediate shipment
Detailed Technical Specifications (φ90mm Model)
| Parameter | Specification | Customization Available |
|---|---|---|
| Nominal Diameter | 90mm (φ90mm) | – |
| Body Material | 100% Virgin Polypropylene (PP) | PVC, PP-FRP composite |
| Blade Design | Diamond-shaped double blade | Single blade |
| Connection Method | Socket connection | Flanged connection |
| Operating Angle | 0-90° (fully closed to fully open) | – |
| Air Leakage Rate | ≤5% at 500Pa | – |
| Operating Temperature | -10℃ to 60℃ | Special grades for up to 95℃ |
| Pressure Rating | 0.6MPa | Up to 1.0MPa |
| Airflow Range | 200-1,000 m³/h | – |
| Standard Color | Gray | Any RAL color |
| Certifications | CE, RoHS, ISO 9001 | – |
| Unit Price | $3.50 | Bulk discounts available |
| Delivery Time | 1-3 days (stock) | 7-10 days (custom) |
| MOQ | 1 piece | – |
Product Structure & Design Features
Our φ90mm PP manual air valve features a robust one-piece injection molded construction with three main components:
1. Valve Body Frame
- Precision injection molded from high-strength PP resin
- Integrated socket ends for direct connection to φ90mm PP ducts
- Smooth inner surface minimizes airflow resistance
- Reinforced edges for enhanced structural strength
2. Double-Blade Assembly
- Unique diamond-shaped double-blade design
- Soft overlapping edges ensure excellent sealing performance
- Balanced blade rotation for smooth operation
- Corrosion-resistant stainless steel shaft
3. Manual Control Handle
- Ergonomic design for easy operation
- Positive locking mechanism holds valve in any position
- Clearly marked open/closed indicators
- Removable handle for security in restricted areas
Step-by-Step Installation Guide
- Prepare the Duct End: Cut the φ90mm PP pipe to the required length and deburr the end
- Clean Surfaces: Wipe both the duct end and valve socket with isopropyl alcohol to remove dirt and grease
- Apply Solvent Cement: Apply a thin, uniform layer of PP solvent cement to both surfaces
- Insert the Valve: Push the valve fully onto the duct, twisting 1/4 turn to ensure even distribution of cement
- Hold in Place: Hold the joint firmly for 30 seconds to allow the cement to set
- Cure Time: Allow 24 hours for full curing before pressurizing the system
- Test Operation: Rotate the handle to verify smooth operation and proper sealing
Installation Tips: Install the valve with the handle accessible for easy adjustment. For horizontal installations, ensure the handle is positioned on the side or top of the duct.
Typical Application Scenarios
The φ90mm PP manual air valve is ideal for:
- Laboratory Fume Hoods: Individual airflow control for fume hood exhaust systems
- Small Industrial Workstations: Local exhaust for chemical benches, etching stations and plating tanks
- HVAC Systems: Airflow balancing in commercial and industrial ventilation systems
- Chemical Storage Rooms: Exhaust system airflow control for acid and alkali storage areas
- Pharmaceutical Clean Rooms: Precision airflow regulation in production and laboratory spaces
- Educational Institutions: School and university laboratory ventilation systems
Matching Components for φ90mm Ventilation Systems
Complete your system with our compatible standard-size products:
- φ90mm PP Ventilation Pipes
- φ90mm PP 45° & 90° Elbows
- φ90mm PP Tee Fittings
- PP Pipe Reducers (90mm to other sizes)
- Electric Motorized Dampers (for automatic control)
- φ90mm PP Flexible Connectors
Why Choose XiCheng EP for Your Air Valve Needs?
- 16 Years of Manufacturing Experience: Specialized in anti-corrosion plastic ventilation equipment
- Strict Quality Control: All valves undergo air leakage testing before shipment
- Large Inventory: Thousands of φ90mm manual valves in stock for immediate delivery
- Factory Direct Pricing: No middleman markup, ensuring the best value for your investment
- Comprehensive Warranty: 12-month warranty against manufacturing defects
- Global Technical Support: Our engineers provide installation guidance and after-sales service worldwide
- Customization Capabilities: We can manufacture custom sizes and configurations to meet your specific requirements
For bulk orders or custom requirements, contact our sales team today. You can also reach us via email at xicheng023@outlook.com or WhatsApp: +86 18927456906.
Frequently Asked Questions (FAQ)
Q: What is the difference between manual and electric air valves?
A: Manual valves are operated by hand and are ideal for applications where airflow adjustments are infrequent. Electric valves are motorized and can be controlled remotely or automatically, making them suitable for systems requiring frequent adjustments or integration with building management systems.
Q: Can this valve be used to control corrosive gases?
A: Yes, our PP manual air valves are specifically designed for use with corrosive gases including acids, alkalis and chemical fumes. They are widely used in chemical plants, electroplating workshops and laboratory ventilation systems.
Q: How do I adjust the airflow with this valve?
A: Simply rotate the handle to the desired position. The valve can be set anywhere between fully closed (0°) and fully open (90°) to achieve the exact airflow rate you need. The locking mechanism will hold the valve in position.
Q: Can this valve be installed outdoors?
A: Yes, our standard PP valves are UV-stabilized and can be used outdoors. For prolonged exposure to direct sunlight in harsh climates, we recommend adding a protective cover.
Q: What is the maximum pressure this valve can withstand?
A: The standard φ90mm PP manual air valve has a pressure rating of 0.6MPa, which is sufficient for most industrial and commercial ventilation applications.
Q: Do you offer other sizes of manual air valves?
A: Yes, we offer manual air valves in all standard sizes from φ50mm to φ500mm. We also offer custom sizes upon request.
