Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
NVENT HOFFMAN AVDR4NM H2Omit Vent Drains NM
nVent HOFFMAN AVDR4NM H2Omit Vent Drain, a non-metallic polyester enclosure accessory designed to remove accumulated water and provide pressure equalisation.
£81.00
Why Choose the nVent HOFFMAN AVDR4NM H2Omit Vent Drain?
The nVent HOFFMAN AVDR4NM H2Omit Vent Drain is a compact and reliable enclosure accessory designed to remove accumulated water from electrical enclosures while providing pressure equalisation to help protect sensitive electrical and electronic components. As part of the nVent HOFFMAN H2Omit Vent Drains series, it provides an effective solution for managing condensation in industrial enclosure applications.
This non-metallic vent drain uses gravity to allow collected liquids to escape from the bottom of an enclosure while a one-way mechanical shut-off helps prevent water and contaminants from entering when pressure is equalised. The corrosion-resistant polyester construction makes it suitable for installation in a wide range of enclosure materials.
With a compact design measuring 67 mm height and 32 mm diameter, the AVDR4NM is ideal for use in mild steel, aluminium, stainless steel and non-metallic enclosures where condensation management and environmental protection are required.
Key Advantages
- H2Omit Vent Drain designed for enclosure condensation management.
- Removes accumulated water from the bottom of electrical enclosures using gravity.
- Provides pressure equalisation to reduce the effects of temperature-induced vacuum conditions.
- Corrosion-resistant polyester construction suitable for industrial environments.
- Helps reduce corrosion that can shorten the service life of electrical and electronic components.
- Compatible with multiple enclosure materials including metal and non-metallic housings.
Key Features
- nVent HOFFMAN H2Omit Vent Drains series.
- Non-metallic vent drain design.
- Polyester construction with smooth matte finish.
- 67 mm height and 32 mm diameter.
- One-way mechanical shut-off prevents water and contaminants entering the enclosure after pressure equalisation.
- Installs in a 7/8-inch hole in the bottom of an enclosure with the supplied nut.
- Can also be installed in a 1/2-inch NPT/NPS threaded conduit hub.
- Maintains enclosure protection ratings when correctly installed.
Reliable Condensation Management for Electrical Enclosures
Condensation can create moisture-related risks inside electrical cabinets, potentially affecting sensitive components and reducing equipment reliability. The nVent HOFFMAN AVDR4NM H2Omit Vent Drain provides a practical method of removing collected liquids while helping balance internal and external enclosure pressure.
Designed for industrial enclosure applications, the H2Omit Vent Drain range supports reliable protection in automation, control and electrical installation environments where maintaining enclosure performance is essential.
Typical Applications
- Industrial electrical control cabinets.
- Automation and machine-building enclosures.
- Outdoor electrical enclosures requiring condensation management.
- Switchgear and control panel systems.
- Enclosures containing sensitive electronic equipment.
- Industrial equipment protection applications.
Technical Specifications
Tick the specs you need, then view products that match.
| Material | GRP / Polyester | |
|---|---|---|
| Country of Manufacture | United States | |
| Manufacturer | nVent HOFFMAN | |
| Series | H2Omit Vent Drains | |
| Model | AVDR4NM | |
| Product type | Non-metallic vent drain | |
| Finish | Smooth matte | |
| Colour | Grey | |
| Height | 67 mm | |
| Width | 32 mm | |
| Depth | 32 mm | |
| Diameter | 32 mm | |
| Protection rating | IEC 60529 IPx6 when correctly installed | |
| Standards | UL 508A Listed; UL/cUL Type 4, 4X; NEMA/EEMAC Type 4, 4X | |
| Installation location | Bottom of electrical enclosures |
Frequently Asked Questions
What is the nVent HOFFMAN AVDR4NM used for?
The AVDR4NM is used to drain accumulated water from electrical enclosures and help equalise internal enclosure pressure.
What material is the AVDR4NM made from?
The vent drain is manufactured from corrosion-resistant polyester material.
Where is the AVDR4NM installed?
The vent drain is installed in the bottom of electrical enclosures to allow collected liquids to drain away.
What enclosure types can use this vent drain?
The AVDR4NM can be installed in mild steel, aluminium, stainless steel and non-metallic enclosures when correctly fitted.
What standards does the AVDR4NM meet?
The AVDR4NM maintains UL/cUL Type 4 and Type 4X enclosure ratings when correctly installed and is UL 508A Listed.
Trusted by Industrial Enclosure Engineers Worldwide
nVent HOFFMAN H2Omit Vent Drains are trusted by engineers and manufacturers to provide dependable condensation control and improve the long-term protection of electrical and electronic enclosure systems.
