Media, micron, ring and quantity set the rate — and volume moves it sharply. Tell us the spec and the annual usage and we will quote per bag, per box and as a standing order.
Over the life of the installation, almost always. A housing is bought once. Bags are bought every week for a decade — which is why the number worth negotiating is the per-bag rate and the change interval, not the vessel.
Media, micron rating, ring material and quantity. Mesh costs more than felt but can be reused. High-efficiency costs more per bag and usually less per year, because it lasts roughly twice as long in the same duty.
Bag pricing drops sharply with quantity. If you know your annual usage, tell us — a standing order against a forecast is priced very differently from a box at a time.
A site standardised on Size 2 holds one line item, buys at a better rate, and never runs out of the size it needs. See the ten media →
If you are buying bags from someone else, send us the spec and the price. Bags are a commodity in the sense that the specification is transferable — we can quote like for like, and tell you honestly if we cannot beat it.
Fit gauges and change at 0.05–0.1 MPa. Most sites changing on a schedule are throwing away a third of the bag life they paid for.
A 1 micron bag on a 25 micron duty blinds in a fraction of the time and costs more per bag. Start coarse and work down.
Graded-density media holds roughly double the dirt in the same housing. Costs more per bag, usually less per year. See it →
Free oil blinds felt fast. A weir or skimmer ahead of the filter can transform bag life for a fraction of the annual consumable saving.