Does the Vent plug AKO1 – filterless version prevent contaminants while opening at 0.15–0.3 bar during oil turbulence?

Yes. The Vent plug AKO1 – filterless version is designed to prevent external contaminants from entering while opening at 0.15–0.3 bar during oil turbulence. Its integrated check valve and O‑ring seal close against ingress during normal operation and suction, and the precisely calibrated opening pressure (0.15–0.3 bar) ensures it opens only when internal pressure rises due to oil turbulence. Constructed from durable aluminum with a steel cover and guarnital fiber washer and rated for -20°C to +100°C, it provides reliable protection and stable operation for the hydraulic circuit.

How does the Vent plug AKO1 – filterless version maintain pressure relief at 0.15–0.3 bar while preventing ingress of contaminants during oil suction?

The Vent plug AKO1 – filterless version maintains pressure relief at 0.15–0.3 bar while preventing contaminant ingress by combining a precisely calibrated check valve with an integrated O-ring and one-way sealing design. When internal tank pressure rises (e.g., from oil turbulence), the check valve opens at the set 0.15–0.3 bar to vent excess pressure; when pressure falls during oil suction, the valve closes immediately to prevent backflow. The O-ring and guarnital fiber washer provide tight sealing against the tank opening, and the one-way valve geometry stops external particles from entering while allowing air exchange only in the intended direction. Built from durable aluminum with a steel cover, the component retains dimensional stability and sealing integrity across -20°C to +100°C, ensuring consistent opening pressure and contamination protection under varying operational conditions.

Vent plug AKO1 – filterless version

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Additional information

Material	AL – aluminum

The air vent plug with integrated check valve and O-ring is designed for reliable installation at the top of the tank, ensuring optimal system protection and performance. Its function is to automatically open when pressure inside the tank rises due to oil turbulence, while effectively preventing external contaminants from entering during hydraulic oil suction. With a precisely calibrated check valve opening pressure of 0.15 ÷ 0.3 bar, it guarantees stable operation and safeguards the hydraulic circuit. Manufactured from high-quality materials—durable aluminum body, robust steel cover, and guarnital fiber washer—it combines strength with long-lasting resistance to demanding working conditions. The component is engineered to operate efficiently within a wide temperature range from -20°C to +100°C, making it suitable for diverse industrial applications. This solution not only enhances system reliability but also extends the service life of hydraulic equipment by maintaining clean and controlled operating conditions.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
AH-AKO1-02G	Vent plug without filter, GZ 1/8" BSP	-	-	In stock	Enquiry
AH-AKO1-04G	Vent plug without filter, GZ 1/4" BSP	-	-	In stock	Enquiry
AH-AKO1-06G	Vent plug without filter, GZ 3/8" BSP	-	-	In stock	Enquiry
AH-AKO1-08G	Vent plug without filter, GZ 1/2" BSP	-	-	In stock	Enquiry
AH-AKO1-12G	Vent plug without filter, GZ 3/4" BSP	-	-	In stock	Enquiry
AH-AKO1-16G	Vent plug without filter, GZ 1" BSP	-	-	In stock	Enquiry

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The air vent plug with integrated check valve and O-ring is designed for reliable installation at the top of the tank, ensuring optimal system protection and performance. Its function is to automatically open when pressure inside the tank rises due to oil turbulence, while effectively preventing external contaminants from entering during hydraulic oil suction. With a precisely calibrated check valve opening pressure of 0.15 ÷ 0.3 bar, it guarantees stable operation and safeguards the hydraulic circuit. Manufactured from high-quality materials—durable aluminum body, robust steel cover, and guarnital fiber washer—it combines strength with long-lasting resistance to demanding working conditions. The component is engineered to operate efficiently within a wide temperature range from -20°C to +100°C, making it suitable for diverse industrial applications. This solution not only enhances system reliability but also extends the service life of hydraulic equipment by maintaining clean and controlled operating conditions.