SeparatorAccessories / Spares

Foam filters are sized and shaped to suit specific separator models and chamber diameters, so always check your unit's make and model before ordering. If you're unsure, measure the existing filter or the housing it sits in, as even small differences in thickness or pore density affect oil-droplet capture. Getting the wrong grade can reduce separation efficiency, so match like-for-like wherever possible.

Most separator foam filters need replacing every six to twelve months, though this depends on how much oil and grit passes through your system and how frequently it's serviced. Filters that look compressed, discoloured or clogged with sediment should be swapped regardless of schedule. Keeping spares on site means routine maintenance visits don't get delayed waiting for parts.

Separator alarms typically monitor liquid level, oil layer thickness, and pump operation, alerting you before the unit becomes overfull or a pump fails. Early warning prevents oil or effluent discharging into the drainage system, which can trigger environmental breaches. Most units run on mains power with a battery backup, so they'll still alert during a power cut.

Not usually — bearing sizes, seal types and fixing thread patterns vary between manufacturers and even between model generations from the same maker. Fitting an incompatible part can cause premature wear or leaks around the housing. It's always worth quoting the model number and, ideally, the part reference from your original documentation when ordering.

Riser extensions are chosen based on how deep your separator is buried and the diameter of the existing access neck, so measure the depth from the tank collar to finished ground level first. Extending access to ground level makes inspections and desludging far easier and safer, particularly for units installed under paving or landscaping. Always pair the riser with a suitably rated lid to maintain load-bearing capacity if it's in a trafficked area.

Standard pedestrian-rated lids can generally be fitted by a competent installer or confident DIYer, provided the riser and seating are clean and undamaged. However, if the separator sits under a driveway or any trafficked area, you'll need a load-rated cover installed correctly to bear vehicle weight, and this is worth having checked by a professional. Poorly seated or incorrectly rated lids are a common cause of cracking and water ingress.