greate vacuum valve for Cyclone Separator & Dust Extraction bucket, plastic barrel and steel - protects against damage caused by contraction

PREVENTS DAMAGE caused by contraction - The vacuum relief valve opens automatically if the vacuum becomes too strong, preventing plastic drums, steel drums, buckets or extraction containers from deforming or contracting INDIVIDUALLY ADJUSTABLE - The trigger point can be adjusted using the lock nut - Greater spring preload results in a later opening, whilst lower preload results in an earlier trigger PRESSURE REGULATION - In the event of a blocked hose, a clogged filter or reduced air flow, the valve automatically allows air to flow in, helping to equalise the negative pressure inside the container IDEAL FOR - Perfectly suited for cyclone separators, DIY dust extraction systems, workshop vacuum cleaners and plastic drums in woodworking workshops, garages and hobby rooms EASY INSTALLATION - A 30 mm drill hole is required for installation - Thanks to the accessories, the valve can be quickly fitted to plastic buckets, extraction lids or cyclone separators