Membrane housings and housing spares for the element formats in this catalogue. The FlowShell HS4040-300 is a filament-wound epoxy/glass-fibre (FRP) end-port housing for a single 4040 element, with ABS end heads, 304 stainless-steel strap retention and EPDM seals, rated 20.7 bar (300 psi) at 1 to 49 °C. Each end carries a 1/2" BSPP centre port and a 3/4" BSPP offset port, and the housing is 1 135 mm long overall. White 1812 and 3012 housings take residential and light-commercial elements in point-of-use and small packaged systems. Spares cover 1812 housing O-ring sets, mounting clamps for 1812 housings and UV sterilisers, and an 1812 housing wrench.
We're still adding our full range and more datasheets. If a part isn't listed, send us the code: we stock and source more than this catalogue shows.
Select the housing by element format first: the element code (1812, 3012 or 4040) must match the housing bore and length. Rate the housing above the highest pressure the feed pump can produce, including dead-head, not the normal operating pressure. The HS4040-300 is limited to 20.7 bar and 49 °C and is not for corrosive liquids, so it suits brackish and municipal RO duty, not seawater. Ramp pressure up gradually at start-up to avoid shock-loading the shell. Replace housing O-rings whenever a housing is opened, because reused seals are a common cause of leaks, and use the matching wrench on 1812 housing caps.
Tick lines to compare them side by side or add them to your quote list together.
FlowShell HS4040-300 4040 end-port membrane housing, FRP, 20.7 bar
Membrane housing 1812, white
Membrane housing 3012, white
Double mounting clamp, large to large
Housing wrench for 1812 membrane housing
Mounting clamp set, large and small
Mounting clamp, large, for 1812 membrane housings and UV sterilisers
O-ring set for 1812 membrane housing (2 pcs)
Lead times are indicative estimates only, based on typical supply at time of publication, and are confirmed at order acceptance. They show our usual longest sourcing time. We can often supply sooner from our network of local suppliers. Actual times may vary with supplier stock, manufacturing, importation, customs and logistics. Only a written quotation or order confirmation commits DWT to a delivery time.
