SPIRAX SARCO · AIR VENTS
Spirax Sarco AE36 Automatic Air Eliminator / Air Vent for Liquid Systems
Spirax Sarco AE36 automatic air vent for hot & cold water systems. SS316L body, PN10 rated. Buy from PC Engineering India.
Overview
The Spirax Sarco AE36 is an automatic air eliminator designed for venting air from hot and cold water installations in industrial and commercial applications. It automatically releases accumulated air from liquid pipelines, preventing air locks that reduce system efficiency, cause noise, and accelerate corrosion.
Constructed entirely from austenitic stainless steel type 316L (body and cap), the AE36 offers excellent corrosion resistance suitable for demanding plant environments. The unit is available in two variants: the standard AE36 air vent and the AE36A, which includes an integral check valve to prevent backflow when the system is depressurised.
The AE36 series fully complies with the Pressure Equipment Directive (PED) and is rated for PN10 service, making it suitable for a wide range of water-based heating, cooling, and process systems.
Key Features
- All stainless steel construction — Body and cap in SS 316L (ASTM A351 CF3M) for corrosion resistance
- Automatic air release — Float-operated mechanism vents air without manual intervention
- Check valve option (AE36A) — Prevents backflow during system shutdown or pressure drop
- Compact design — Minimal footprint for easy installation in tight spaces
- Wide temperature range — Operates from -10°C to 150°C
- PED compliant — Meets European Pressure Equipment Directive requirements
- Low maintenance — Field-serviceable with available maintenance kits
Specifications
| Parameter | Value |
|---|---|
| Inlet Connection | ½" female BSP or NPT |
| Outlet Connection | ¼" male BSP or NPT |
| Body Design Pressure | PN10 |
| Maximum Allowable Pressure (PMA) | 10 bar g @ 150°C |
| Maximum Allowable Temperature (TMA) | 150°C @ 10 bar g |
| Maximum Operating Pressure (PMO) | 10 bar g @ 110°C |
| Maximum Differential Pressure (ΔPMX) | 8 bar g |
| Minimum Operating Temperature | -10°C |
| Cold Hydraulic Test Pressure | 15 bar g |
| Minimum Liquid Specific Gravity | 0.926 |
| Body & Cap Material | SS 316L (ASTM A351 CF3M) |
| Float Material | Acetal co-polymer / Stainless steel |
| Valve Head | EPDM |
| Dimensions (A × B × C) | 56 × 105 × 10 mm |
| Weight | 0.7 kg |
Applications
The AE36 automatic air eliminator is used across industries where air accumulation in liquid systems causes operational problems:
- HVAC systems — Chilled water and hot water circuits in commercial buildings and factories - Process cooling loops — Maintaining flow efficiency in industrial cooling systems - Boiler feed and condensate systems — Preventing air pockets in water treatment plants - Pharmaceutical and food processing — Hygienic liquid handling where SS316L is required - District heating networks — Large-scale water distribution systems
Install vertically with the inlet at the bottom. Pipe the discharge outlet to a suitable drain point.
Frequently Asked Questions
Get a Quote
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