Trusted by Australian industries for over 40 years, we deliver dependable SMH Negative Pressure Units (NPU'S), and safety solutions with certified products, fast shipping, and expert support.
These accessories are commonly selected alongside NPUs to support safe asbestos removal, air pressure monitoring, pre-filters and flexible ducting.
Real-time pressure monitoring with Wi-Fi and data logging for compliance and safety assurance.
Trusted for accurate NPU pressure logging
Compatible pre-filter designed to capture large debris and prolong HEPA filter lifespan.
Helps maintain optimal airflow & filter life
Heavy-duty ducting for NPU air discharge or attaching to roving head, suitable for standard asbestos setup configurations.
Durable and easy to connect to NPU outlets
The AMS and SMH Negative Pressure Units are manufactured in the UK by SMH Products. Allens Industrial is the exclusive distribution partner for SMH products in Australia.
A Negative Pressure Unit (NPU) is designed to create negative pressure inside an enclosure to prevent the escape of airborne particles. Air is drawn into the unit by a powerful motor and through a series of filters, each with increasing efficiency.
This will depend on the size of the enclosure and many other job-specific factors. Please feel free to contact us with your requirements.
DOP stands for Dispersed Oil Particulate. The test ensures there are no leaks in your HEPA filter or the internal seals of the unit, maintaining the required 99.995% filtration efficiency.
Yes, all Negative Pressure Units sold through Allens Industrial Products are individually DOP tested and come with a certificate from the date of purchase.
We recommend the Omniguard Differential Pressure Monitor for real-time monitoring and easy data transfer.
Yes, we carry the full range of Negative Pressure Units in stock across Brisbane, Sydney, and Melbourne. Please contact us with your requirements.
Discover our expert blog on NPU systems for asbestos removal and dust control.
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