All-Stainless Steel Material
Product Overview
Spirax Sarco AV13 steam system air vent valve is a repairable pressure balanced thermostatic air vent valve with angle connection design. The product strictly complies with the European Pressure Equipment Directive 97/23/EC standard, can provide professional test reports, ensuring stable and reliable air venting in steam systems for efficient operation.
Core Technical Parameters
Operating Range Limits
- Maximum Allowable Temperature (TMA): 250℃ (at 7 bar g)
- Minimum Allowable Temperature: -20℃
- Minimum Working Temperature: 0℃
- Design Maximum Cold Water Test Pressure: 24 bar g
- Specific Operating Parameters: 13 bar g @ 220℃; 250℃ @ 7 bar g
- Note: The product has specific prohibited zones and must follow saturated steam curve limitations (see technical charts for details)
Dimensions and Weight
| Port Size | Dimension A (mm) | Dimension B (mm) | Dimension C (mm) | Dimension D (mm) | Disassembly Distance E (mm) | Weight (kg) |
|---|---|---|---|---|---|---|
| 3/8" | 18 | 32 | 49 | 25 | 55 | 0.40 |
| ½" | 20 | 38 | 53 | 25 | 55 | 0.40 |
| ¾" | 27 | 40 | 62 | 25 | 55 | 0.45 |
Component Material Details
| Part No. | Component Name | Material | Standard |
|---|---|---|---|
| 1 | Body | Brass | BS EN 12165 CW 617N |
| 2 | Cap | Brass | BS EN 12165 CW 617N |
| 3 | O-Ring | Synthetic Rubber Fluorocarbon | - |
| 4 | Capsule | Stainless Steel | - |
| 5 | Spring | Stainless Steel | BS 2056 302 S26 |
| 6 | Baffle | Stainless Steel | BS 1449 304 S16 |
| 7 | Valve Seat | Stainless Steel | BS 970 431 S29 |
| 8 | Valve Seat Gasket | Stainless Steel | BS 1449 304 S11 |
Installation and Safety Information
Installation Requirements
- The air vent valve should be installed at the highest point of the pipeline or equipment, where air accumulates.
- The air vent valve must be equipped with an outlet pipe, connected to a safe area before discharge.
- For detailed installation steps, please refer to the Installation and Maintenance Guide (No.: IMP010-07) provided with the product.
Safety and Environmental
- The product is recyclable and will not cause environmental pollution when properly disposed of.
- During recycling, if the temperature approaches 315℃, attention should be paid to the decomposition products of fluorinated rubber to avoid safety hazards.
- For safety operation details, please refer to the Installation and Maintenance Guide (IMP010-07).
Recommended Tightening Torque
| Component/Part No. | Torque Specification (Nm) | Corresponding Size (A/F mm) |
|---|---|---|
| 2 (Gasket) | 90 - 100 | 50 |
| O-Ring | 50 - 60 | 50 |
| Valve Seat | 35 - 40 | 17 |
Ordering Instructions
Product Ordering Example
1-Spirax Sarco ½" AV13 Air Vent Valve, BSP threaded connection
Spare Parts Related
Available Spare Parts List
| Spare Part Name | Corresponding Part No. | Notes |
|---|---|---|
| Capsule and Valve Seat Assembly | 3, 4, 5, 6, 7, 8 | Core maintenance spare parts combination |
| Cap Gasket (Early Models) | 3 | 3 pieces/set, suitable for traditional model sealing |
| O-Ring (Current Models) | 3 | 3 pieces/set, 2 types, adapted to body type, for cap sealing |
Spare Parts Ordering Example
1-Capsule and Valve Seat Assembly for ½" AV13 Air Vent Valve
Ordering Notes
- When ordering spare parts, clearly specify the air vent valve model, port size, and spare part name.
- Early models use traditional cap gasket sealing, while current models have been upgraded to O-ring sealing. The production batch should be distinguished when ordering.
