How should the AE50S be installed?

The AE50S must be installed vertically with the inlet connection at the bottom. The discharge should be piped to a safe, visible point or drain via an air break to allow visual confirmation of operation.

Can the AE50S be used on superheated water systems?

Yes. For superheated water applications, install 1–2 metres of ¾" vertical pipeline before the vent inlet. The outlet pipework must be sized to handle flash steam during discharge and directed to a safe location.

What spare parts are available for the AE50S?

The AE50S is a sealed, maintenance-free unit with no user-serviceable parts. No spare parts are available or required — the unit is designed for long-term, trouble-free operation.

What is the minimum liquid specific gravity the AE50S can handle?

The AE50S is designed for liquids with a minimum specific gravity of 0.65, making it suitable for most industrial liquids including light hydrocarbons.

Does the AE50S come with material certification?

Yes, EN 10204 3.1 material certification for the bowl, cover, and inlet connection is provided as standard with every unit.

SPIRAX SARCO · AIR VENTS

Spirax Sarco AE50S Automatic Air and Gas Vent for Liquid Systems

Name: Spirax Sarco AE50S Automatic Air and Gas Vent for Liquid Systems
Brand: Spirax Sarco

Spirax Sarco AE50S stainless steel automatic air vent for liquid systems. Ideal for removing air/gas in industrial piping. Available at PC Engineering

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Overview

The Spirax Sarco AE50S is an automatic air and gas vent engineered specifically for liquid systems in industrial applications. This float-operated vent automatically releases accumulated air and non-condensable gases from pipelines, maintaining system efficiency and preventing air-locking issues in process lines.

Constructed with a fully welded 304L austenitic stainless steel body, the AE50S offers excellent corrosion resistance suitable for demanding process environments. The unit is designed for maintenance-free operation with no user-serviceable parts, reducing downtime and maintenance costs. It complies with the European Pressure Equipment Directive 2014/68/EU and comes standard with EN 10204 3.1 material certification for the bowl, cover, and inlet connection.

The AE50S is suitable for high-pressure liquid systems up to 41.4 bar g and can handle operating temperatures ranging from -60°C to 427°C, making it appropriate for a wide range of industrial liquid handling applications including superheated water systems.

Key Features

Fully welded 304L austenitic stainless steel construction for corrosion resistance
Automatic float-operated venting mechanism — no manual intervention required
Maintenance-free, sealed design with no spare parts needed
High-pressure capability up to 41.4 bar g (600 psi g)
Wide temperature range: -60°C to 427°C
CE marked, compliant with PED 2014/68/EU
EN 10204 3.1 material certification included as standard
Suitable for liquids with minimum specific gravity of 0.65

Specifications

Parameter	Value
Inlet Connection	¾" female BSP Rp (ISO 7-1) or NPT
Outlet Connection	½" female BSP Rp (ISO 7-1) or NPT
Body Design Rating	ANSI 300
Maximum Allowable Pressure (PMA)	41.4 bar g @ 30°C (600 psi g @ 86°F)
Maximum Allowable Temperature (TMA)	427°C (801°F)
Minimum Allowable Temperature	-254°C (-425°F)
Maximum Operating Pressure (PMO)	41.4 bar g @ 30°C (600 psi g @ 86°F)
Maximum Operating Temperature (TMO)	427°C @ 23.6 bar g (801°F @ 342 psi g)
Minimum Operating Temperature	-60°C (-76°F)
Maximum Differential Pressure (PMX)	30 bar g (435 psi g)
Max Cold Hydraulic Test Pressure	63 bar g (914 psi g)
Minimum Specific Gravity	0.65
Body Material	Austenitic stainless steel ASTM A240 304L
Float Material	Austenitic stainless steel AISI 316L
Dimensions (A × B × C)	175 mm × 79 mm × 18.5 mm
Weight	1 kg (2.20 lbs)

Applications

The Spirax Sarco AE50S automatic air vent is used across various industrial sectors where air and gas removal from liquid systems is critical:

- Power plants — boiler feedwater systems, condensate lines - Chemical processing — process liquid pipelines, heat exchanger circuits - Pharmaceutical manufacturing — purified water and WFI systems - Food and beverage — CIP systems, process water lines - HVAC and building services — chilled water and hot water circuits - Oil and gas — liquid hydrocarbon transfer lines - Superheated water systems — with recommended inlet piping configuration

Frequently Asked Questions

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Contact PC Engineering for pricing, availability, and technical support for the Spirax Sarco AE50S Automatic Air and Gas Vent. Call us or fill in our inquiry form — our engineers will respond within 24 hours.

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