EPTFE Breathable Vent Plug High Flow For Agrochemical IBC Totes / Drums D17

The D17 ePTFE breathable vent plug is a high-flow pressure management device purpose-built for agrochemical IBC totes, large drums, and bulk shipping containers. Its 17mm mounting body houses an exceptionally breathable ePTFE membrane that can handle the extreme airflow demands of filling, discharging, and thermal ventilation in volumes up to 1250 liters. This plug delivers continuous, bidirectional pressure equalization while maintaining a 100% waterproof and dust-tight seal. Engineered for the rigorous UN and ADR transport requirements, it ensures that intermediate bulk containers carrying hazardous pesticides, liquid fertilizers, and fumigants arrive at their destination safely, without deformation, leakage, or dangerous pressure buildup.

IBC totes and large agrochemical drums present the most demanding ventilation challenges in the agricultural supply chain. An IBC being pumped out at 50 liters per minute requires a corresponding volume of air to enter, otherwise, the rigid cage will collapse the inner bottle. In tropical climates, solar heating can cause rapid vapor expansion, while sudden rainstorms can create an instant vacuum. Many IBC closures lack integrated high-flow vents, forcing operators to loosen caps during dispensing—a hazardous practice that allows VOC emissions and contamination risks. Standard low-flow vents are simply not adequate for the breathing rates these large containers demand.

The D17 high-flow vent plug is specifically designed to match the respiration rate of IBC totes and large drums. The expanded membrane area in its 17mm format allows for airflow exceeding 1500 ml/min, quickly neutralizing pressure differentials during high-speed filling and dispensing. Its HDPE body can be thermally welded into IBC lids, drum caps, or dedicated breather ports, creating a gas-tight, tamper-evident seal. The ePTFE membrane’s enhanced oleophobic treatment resists the low-surface-tension agrochemicals commonly stored in IBCs, preventing liquid seepage even when the vent is submerged during tank cleaning or heavy rain exposure.

• 1000L and 1250L IBC totes for liquid fertilizers and pesticides

• 200L export drums for agrochemical concentrates

• IBC dispensing system breather ports

• Large on-farm mixing and nurse tanks

• Fumigant bulk shipping containers

• Seed treatment and liquid inoculant totes

When the IBC is pumped out, a partial vacuum forms. Ambient air rushes through the ePTFE membrane’s interconnected pore network to fill the increasing headspace, maintaining near-ambient pressure and allowing smooth, continuous flow. When the container is heated, expanding gases escape through the same pathway. The membrane’s microstructure is engineered for low pressure drop even at high flow rates, meaning the pressure differential required to move air is minimal. This protects the IBC’s inner bottle from stress and prevents the outer cage from distorting.

1. Match vent airflow to your maximum pump-out or fill rate to ensure adequate makeup air.

2. Verify the chemical’s gas-generating potential: products releasing gases continuously may require even higher airflow capacity.

3. Test long-term compatibility: IBCs often have extended service lives; conduct a 6-month immersion test with your specific chemical to validate sustained performance.

4. Consider the vent’s placement: install at the highest point of the IBC lid to avoid liquid submersion during normal operation.

• Q: Can one D17 vent provide enough airflow for a 1000L IBC being emptied at 80 L/min?
  A: We recommend calculating the exact air replacement rate. In many cases, two D17 vents may be installed for high-flow applications to ensure zero vacuum lag.

• Q: Does this vent interfere with IBC stacking?
  A: The vent’s low-profile design sits flush or slightly recessed in the IBC lid, ensuring it does not bear the stacking load or interfere with adjacent containers.

• Q: Will pesticide vapors condense and clog the membrane?
  A: The oleophobic treatment minimizes liquid retention. However, for highly condensable vapors, we recommend a vent with a built-in condensation shield (available as a custom option).

• Q: Can this vent be used for returnable/refillable IBC programs?
  A: Yes, the HDPE body and ePTFE membrane are durable enough to withstand multiple cleaning cycles. We can provide testing data for lifecycle performance.

• Q: How do I prevent insect intrusion in outdoor IBC storage?
  A: The nanoporous membrane is an absolute barrier to insects. No additional screens are required.