Product

Megavent SS304/316

Air Purging Valve

High-capacity stainless-steel air vent with a conical body for hydronic systems.

A high-efficiency air purger for hydronic systems. Trapped air causes corrosion and cuts heat-transfer efficiency — the Megavent’s conical body and larger orifice remove it quickly and reliably.

Size: 25 mm
Pressure: PN16
Temperature: −10–90 °C
Body: CF8 / CF8M

Key features

Conical body for faster, more efficient venting
Larger 3 mm orifice for high air-release capacity
Adjustable screw to control venting
All-metal internals, including a stainless float
20 mm hose nozzle for a piped drain
Easy to open for cleaning and maintenance
Rated PN16, −10 °C to 90 °C; body tested to 33 bar

Principle of working

How it works

1
Normal running

Water fills the body and lifts the float, holding the vent valve shut.
2
Air collects

Trapped air rises to the top of the body, pushing the water level and float down.
3
Air is released

The falling float pulls the valve off its seat and the air discharges.
4
Valve recloses

Water refills the body, lifts the float and reseals the valve automatically.

Design & construction

Built simple, built to last

What goes into the Megavent SS304/316.

Conical body design increases venting efficiency
Body cast in ASTM A351 CF8 / CF8M stainless steel
SS304 / SS316 float and venting mechanism — all-metal internals
EPDM O-ring and seating
Adjustable SS304 / SS316 vent control screw
20 mm hose nozzle to pipe away discharge
Simple to open for cleaning and maintenance

Applications

Where it's used

Typical installations where the Megavent SS304/316 delivers reliable performance.

Hydronic heating and cooling systems Plant-room headers and main risers Boiler and chiller circuits Large-volume water and brine systems Process and industrial pipework

Specifications