40-Inch Cartridge Filter Housing | Watermart Indonesia
40-inch cartridge filter housing for water filtration
A 40-inch cartridge filter housing must match the element diameter, end style, cartridge count, seal, material, pressure, temperature, flow, and connections. PT Watermart Perkasa matches housings for RO prefiltration, polishing, process water, and commercial installations; nominal 40-inch length alone does not establish compatibility.
Updated 4 August 2026: 40-inch cartridge compatibility, element count, service clearance, and cartridge replacement paths were clarified.
What must match on a 40-inch cartridge filter housing?
Verify a 40-inch housing as a complete assembly rather than selecting it by element length alone. Match the housing and cartridge drawings, then check body grade, internals, O-rings, ports, clamp or closure, fluid compatibility, and the vertical or horizontal clearance needed to withdraw each element during service.
| Buyer check | Minimum information |
|---|---|
| 40-inch element | Product code, actual length, diameter, end style, seal, and flow direction |
| Cartridge count | Elements per housing and the internal retention or sealing arrangement |
| Material and rating | Wetted-parts grade, seals, normal/maximum pressure and temperature, and pressure surge |
| Connections and service | Port size/type, vent, drain, closure clearance, and cartridge-withdrawal space |
| Quotation scope | Housing, initial cartridges, gauges, valves, legs, spare seals, delivery, and commissioning |
When should a 40-inch single- or multi-cartridge housing be used?
Choose a single- or multi-cartridge arrangement from peak flow, element pressure-drop curves, the differential-pressure limit, redundancy needs, and available service time. More elements can provide more filtration area, but they also change body size, cartridge-withdrawal clearance, service weight, seal count, and access to vents and drains.
| Project condition | Arrangement to evaluate | Check before purchasing |
|---|---|---|
| Lower flow and a short shutdown is acceptable | One cartridge or several small housings | Clean/dirty pressure drop, isolation access, and cartridge stock |
| Higher flow through one train | Multi-cartridge housing | Combined curve at design flow, flow distribution, port size, and space to withdraw every element |
| Flow cannot stop during change-out | Two trains or duty/standby | Isolation valves, footprint, instruments, and the changeover procedure |
| Solids loading changes sharply | More filtration area or additional pretreatment | Differential-pressure history, change frequency, and upstream-stage capacity |
Require the supplier to state elements per housing and design flow per train. Price comparisons are incomplete when a larger body excludes initial cartridges, isolation valves, differential-pressure gauges, or the service space needed to maintain it.
How is the number of 40-inch cartridge elements determined?
The number of 40-inch elements is determined from peak flow and the cartridge pressure-drop curve for the project fluid, not a fixed flow allowance per element. Use the curve for the installed model and micron rating, then check the clean condition, approved change-out differential pressure, and standby-train requirement.
| Sizing input | Effect on element count |
|---|---|
| Normal and peak flow | Sets the total flow divided across all elements and trains |
| Model pressure-drop curve | Shows pressure loss at the selected size, micron rating, and flow |
| Temperature and fluid properties | Viscosity, solids, or chemicals can change pressure drop and suitable materials |
| Differential-pressure limit | Sets the margin from clean condition to the approved change-out point |
| Operating pattern | Duty/standby service, change-out without shutdown, and future capacity affect the housing count |
Require the sizing record to state cartridge model, elements per housing, housings per train, flow per train, and pressure-drop assumptions. Recheck these details against the housing datasheet, closure rating, ports, and operating procedure before the purchase order.
What determines cartridge filter housing price?
Do not compare 10-, 20-, 30-, or 40-inch housings by length alone. Confirm that each quotation includes the same cartridge count, closure type, seal material, pressure rating, connections, drain or vent, and installation accessories.
| Quotation factor | Option to confirm | Why it matters |
|---|---|---|
| Cartridge format | Standard diameter, Big Blue, or high-flow; 10–40-inch length | Sets element compatibility and housing dimensions |
| Housing material | Plastic, stainless steel, or FRP depending on product range | Must suit fluid quality, pressure, and temperature |
| Capacity | Single, multi-cartridge, or high-flow | Sets filtration area, pressure drop, and service space |
| Seals and connections | O-ring material, port size, vent, and drain | Affects compatibility and installation |
| Supply scope | Housing only, initial cartridges, gauges, valves, and spare seals | Makes quotations commercially comparable |
How to verify a replacement stainless steel cartridge housing
Match a replacement housing from the nameplate and actual dimensions, not only the cartridge length. A change in element count, closure type, port position, or leg height can require piping and service-clearance changes even when both housings are described as 40-inch units.
- Photograph the nameplate, body, closure, vent, drain, legs, and inlet/outlet direction.
- Measure overall height, body diameter, port spacing, connection size, and clearance needed to open the housing.
- Record the installed cartridge count, length, diameter, end configuration, and seal.
- Record normal/maximum pressure and temperature, peak flow, fluid type, and differential pressure with clean and change-out cartridges.
- Separate reusable components from new requirements such as gauges, valves, legs, initial cartridges, and spare O-rings.
These details distinguish a like-for-like replacement, a capacity upgrade, and a material change. Before installation, recheck the rating, seal compatibility, flow direction, supports, and depressurization procedure in the selected model documentation.
Cartridge housing selection checklist
| Parameter | Information to check | Selection impact |
|---|---|---|
| Operating flow | Normal and peak L/min or m³/h | Sets housing size and cartridge count |
| Pressure and temperature | Normal and maximum values | Sets material, pressure rating, and operating margin |
| Feedwater condition | Sediment, iron, organics, and upstream treatment | Informs cartridge media and micron rating |
| Application | RO prefilter, polishing, process water, or commercial service | Informs materials, seals, and maintenance access |
| Change-out plan | Allowable differential pressure and service interval | Informs redundancy and shutdown planning |
For an industrial RO train, match the housing with an industrial filter cartridge, RO membranes, and a Codeline pressure vessel. The selected equipment does not by itself make the product water ready to drink; commissioning, sanitation, sampling, and laboratory verification remain necessary where drinking water is intended.
When should standard, high-flow, or Pentek 40-inch cartridges be used?
A 40-inch length only defines element space; the cartridge format determines filtration area, pressure drop, sealing, and replacement stock. For a retrofit, follow the old element code when performance is acceptable. For a new skid, compare standard-diameter, high-flow, AquaLine, or Pentair Pentek elements from design flow and consumable availability.
| Cartridge option | Suitable use | Data to lock down |
|---|---|---|
| Standard-diameter 40-inch | Polishing and prefiltration at lower to medium flow per housing | Diameter, end style, micron rating, seal, and element count |
| High-flow 40-inch | Higher flow with fewer elements | Pressure-drop curve, flow direction, adapter, and cartridge-withdrawal space |
| Pentair AquaLine | RO prefiltration and process filtration in the 1-20 micron range | Cartridge model, 80CF housing if used, flow, and particle target |
| Pentair Pentek cartridges | Sediment, chlorine taste/odour, and selected point-of-use duties | Cartridge media, matching housing, quality target, and change interval |
Ask quotations to separate housing price from the initial cartridges. Buyers can then compare upfront cost, consumable cost, change-out downtime, and replacement stock without treating every 40-inch cartridge as the same product.
Cartridge housing FAQ
What data is needed for a cartridge housing quotation?
Send normal and peak flow, pressure, temperature, fluid type, target micron rating, cartridge dimensions, element count, preferred material, connection size, and installation location. For a replacement, include nameplate photos and measured dimensions, then submit the package through the Watermart contact form.
Do all 40-inch cartridges fit a 40-inch stainless steel housing?
No. Nominal length does not establish a matching diameter, end configuration, seal, retention arrangement, element count, or internal tolerance. Match the cartridge code to the housing drawing and check installation clearance and sealing procedure before purchasing.