Membrane Protection Filter
Siliphos (polyphosphate) filled ring · Fits inside 18x12 (1812) membrane housings
Plastic ring filled with siliphos (polyphosphate) crystals, fitted inside the 18x12 (1812) membrane housing of reverse osmosis (RO) units, between the inlet end of the membrane and the housing cap. Water flowing to the membrane passes through the slots of the ring and comes into contact with the crystals.
- Compatible housing
- 18x12 (1812)
- Fill
- Siliphos polyphosphate
- Operating temperature
- 4 - 45 °C
- Replacement interval
- Depending on usage
Stock code6-9-002
Overview
The siliphos crystals dissolve slowly in the water and reduce the adhesion and build-up of limescale (Ca and Mg ions) and carbonates on surfaces, helping to limit scale on the membrane surface. No extra fittings or filter housing are required.
Features
- Fits inside the membrane housing; no extra filter or fittings needed
- Siliphos crystals dissolve slowly and evenly in water
- Helps limit scale build-up on the membrane surface
- Compatible with standard 18x12 (1812) membrane housings
- Easily replaced at membrane change
Applications
- Residential reverse osmosis (RO) water purifiers
- RO systems fed with hard, scale-forming mains water
- Membrane protection in under-sink and compact RO units
- As a spare part at membrane replacement
- Service and maintenance work
Models and Stock Codes
| Stock Code | Model | Compatible Housing | Fill | Outer Dia.* (mm) | Height* (mm) |
|---|---|---|---|---|---|
| 6-9-002 | Membrane Protection Filter | 18x12 (1812) | Siliphos | ≈ 48 | ≈ 21 |
Fitted at the inlet end of the membrane, on the housing cap side; it stays inside the housing together with the membrane.
* Approximate values. The 2" / 2.5" inline Twin Soft TS100 filters (100% siliphos) are separate products used as a separate filter.
Technical Specifications
Operating Conditions
- Application
- Scale prevention for RO membrane
- Operating temperature
- 4 - 45 °C (39 - 113 °F)
- Operating pressure
- Per membrane housing rating
- Replacement interval
- Depending on usage
Materials and Construction
- Fill
- Siliphos (polyphosphate) crystals
- Body
- Slotted plastic ring
- Position
- Inside membrane housing, inlet end
- Use
- Disposable
Installation and Replacement
- Shut off the water supply to the unit and relieve the system pressure.
- Open the membrane housing cap with the wrench.
- Remove the used ring and seat the new one at the inlet end of the membrane.
- Check the cap seal, tighten the cap by hand and finish with the wrench.
- Slowly reopen the water supply and check for leaks.
Replace the ring depending on usage or at membrane change, and when the crystals are used up. The membrane protection filter does not replace the pre-filters (sediment and carbon).
Packaging
| Stock Code | Box Size (mm) | Pcs / Box |
|---|---|---|
| 6-9-002 | 280 × 280 × 270 | 32 × 10-pack (320 pcs) |
The product is sold in packs of 10. Pack of 10 size: 52 × 52 × 170 mm.
Wholesale and OEM
Request a quote and lead time for this product
We quote distributors, installers and project contractors by stock code. Ask us about OEM and private label production as well.
