SPIRAX SARCO · AIR VENTS
Spirax Sarco AE14 SG Iron Automatic Air Vent for Liquid Systems
Spirax Sarco AE14 automatic air vent in SG iron for liquid systems. Float-type, PN16 rated, ideal for process plants. Buy from PC Engineering India.
Overview
The Spirax Sarco AE14 is a float-type automatic air vent designed for liquid systems in industrial applications. Manufactured with an SG iron body and cover, this air vent provides reliable, continuous air removal from pipelines, ensuring efficient system operation and preventing air-locking issues that can reduce heat transfer efficiency and cause operational disruptions.
The AE14 series operates automatically using a float mechanism that opens the vent when air accumulates and closes when liquid reaches the valve. The unit is fully maintainable in-line, reducing downtime during servicing. Multiple variants are available to suit different media compatibility requirements—including Viton, EPDM, and stainless steel valve head options.
Models with an integrated stop valve (AE14SV, AE14ESV) allow isolation without removing the unit from the system, simplifying maintenance procedures in critical process lines.
Key Features
- Float-type automatic air venting for liquid systems
- SG iron construction (EN-GJS-400-15) for durability and corrosion resistance
- Multiple valve head materials: Viton (standard), EPDM, or stainless steel
- Available with inbuilt stop valve (AE14SV/AE14ESV variants)
- Fully maintainable in-line with available spare kits
- Compliant with EU Pressure Equipment Directive / UK Pressure Equipment Regulations
- Material certification available to EN 10204 2.2 on request
- Suitable for liquids with specific gravity as low as 0.6
Specifications
| Parameter | Value |
|---|---|
| Body Material | SG Iron EN-GJS-400-15 |
| Pressure Rating | PN16 |
| Max. Allowable Pressure (PMA) | 16 bar g @ 110°C (232 psi g @ 230°F) |
| Max. Allowable Temperature (TMA) | 250°C @ 13.6 bar g (482°F @ 197.3 psi g) |
| Min. Operating Temperature | 0°C (32°F) |
| Max. Operating Temp – AE14/AE14SV | 200°C @ 14.5 bar g |
| Max. Operating Temp – AE14E/AE14ESV | 127°C @ 15.5 bar g |
| Max. Operating Temp – AE14S | 250°C @ 13.6 bar g |
| Max. Differential Pressure | 14 bar g (203 psi g) |
| Max. Cold Hydraulic Test Pressure | 24 bar g (348 psi g) |
| Min. Liquid Specific Gravity | 0.6 |
| Connection Sizes | ½", ¾" (Screwed BSP) |
| Weight (AE14/AE14E/AE14S) | 2.5 kg |
| Weight (AE14SV/AE14ESV) | 2.7 kg |
Applications
The Spirax Sarco AE14 automatic air vent is suited for a wide range of industrial liquid systems, including:
- Heating and cooling water circuits - Process liquid pipelines in chemical and pharmaceutical plants - HVAC systems in commercial and industrial buildings - Closed-loop water systems in power generation - Food and beverage processing lines (with appropriate material selection) - Any pressurized liquid system requiring automatic air elimination
Frequently Asked Questions
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