Hydronit oil tank plastic filler cap
With external thread.
Made of polyamide 66, which ensures high mechanical resistance at low and high temperatures (operating temperature -30°C to +100°C).
Supplied with a 70 Shore class oil resistant O-ring.
In versions with air filter (polyurethane foam or sintered bronze), it is located under the cover and can be easily removed for cleaning and subsequent assembly.
These plugs allow a high air circulation due to the ventilation holes at the bottom of the plug.
They are recommended for use in systems where the oil level varies frequently and for short periods of time,
where air inlet and outlet are necessary without causing undesirable overpressures.
In applications where the air vent is subject to heavy splashes, especially during start-up when the oil is not yet very fluid,
we recommend using a version with a sintered bronze air filter (filtration grade 30 microns).
This allows air flow, but slows down oil overflow as this type of filter is not absorbent.