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Dual Stage Venting Solutions - Dual Stage Jet

The Dual Stage Jet from Donaldson is a dual-stage battery venting solution engineered to provide pressure equalization and ingress protection during normal operating conditions, while enabling rapid degassing during abnormal pressure events.

During standard operation, the vent maintains stable internal battery pack pressure through controlled airflow. I

f internal pack pressure exceeds the typical opening pressure of 115 mbar, the cap and poppet jettison, enabling rapid degassing of approximately 100 liters/second at 100 mbar. This rapid venting capability helps mitigate risks associated with thermal runaway and protects battery pack integrity.

The vent incorporates Tetratex® ePTFE membrane technology with hydrophobic and oleophobic properties to protect against water, dust, and contaminants while maintaining airflow.

The design also features multiple sealing and mounting elements, including a threaded ISO-6149 interface and O-ring sealing, to ensure reliable integration into battery pack housings.

Key features

Proven gravel-impact durability for harsh-duty environments, validated to ISO 20567-1:2017

Tetratex® ePTFE membrane with hydrophobic and oleophobic properties for protection against water, dirt, and contaminants

Pressure equalization with minimum airflow of 97 L/hour at 10 mbar during normal operation

Burst vent function providing rapid pressure relief of 25 L/s at 300 mbar to maintain battery pack integrity

Protective cap design that shields the membrane from spray and jettisons during thermal runaway

Poppet mechanism securing the membrane and protecting it from spray, also designed to jettison during thermal runaway

Custom sealing system that prevents dust and water ingress into the battery pack

Robust body design enabling adjustable release pressure and reliable operation

ISO-6149 threaded interface with optional bayonet mounting for flexible integration

Integrated O-ring sealing for reliable sealing against the battery pack wall

Technical specifications

Minimum Airflow During Normal Operation: 97 liters/hour @ 10 mbar

Opening Pressure (Typical): 115 mbar

Degassing Airflow (Typical): 100 liters/sec @ 100 mbar

Ingress Protection (IP) Grade: IP67, IP68, IP69K

Membrane: Hydrophobic & Oleophobic Tetratex® ePTFE

Interface Options:

Bayonet: ¼ turn – 3 mm
Screw-Fit: M42 x 2 Thread

Temperature Range: -40°C to 125°C

Size: 58 mm Diameter, 12.5 mm Height (above enclosure)

Leak Check Capability: Yes

Dual Stage Jet Vent - Donaldson

Dual Stage Venting Solutions - Dual Stage Jet

Key features

Technical specifications

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