GS20-2 Duplex Filter Housing
20" · Duplex · 1/2" - 1" interchangeable threaded nipple · Clear bowl
Ready-made duplex set of two 20" filter housings joined on a common bracket. It takes standard 20" × 2.5" double open end (DOE) cartridges, so that sediment and carbon cartridges, for example, can be used one after the other on the same line.
- Cartridge length
- 2 × 20" · 2.5" dia.
- Connection
- 1/2" - 1" interchangeable threaded nipple
- Operating pressure
- 0.5 - 8.6 bar
- Operating temperature
- 4 - 45 °C
Stock codes5-FK-GS-20-D205-FK-GS-20-D255-FK-GS-20-D32
Overview
In the GS series the connection is made with interchangeable threaded nipples held in the head by socket clips (1/2", 3/4", 1"). Housings are joined side by side with the intermediate nipple, and the wall hanger with its clip makes installation easy. The clear bowl lets the cartridge condition be checked from outside.
Features
- Clear bowl shows the cartridge condition
- Flexible connection with clip-in interchangeable nipples
- Fits standard 20" cartridges
- One-piece installation on a common bracket
Applications
- Pre-filtration of mains water at building inlets
- Sediment and carbon filtration ahead of water purifiers
- Protection of boilers, water heaters and appliances
- Filtration of well and tank water
Models and Stock Codes
| Stock Code | Model | Connection | Flow* (L/min) | Cartridge | Single Box (mm) |
|---|---|---|---|---|---|
| 5-FK-GS-20-D20 | GS20-2 Duplex Filter Housing 1/2" | 1/2" | 12 - 18 | 2 × 20" | 235 × 115 × 590 |
| 5-FK-GS-20-D25 | GS20-2 Duplex Filter Housing 3/4" | 3/4" | 20 - 25 | 2 × 20" | 235 × 115 × 590 |
| 5-FK-GS-20-D32 | GS20-2 Duplex Filter Housing 1" | 1" | 35 - 40 | 2 × 20" | 235 × 115 × 590 |
Port threads are BSPP. * Recommended flow range by connection size. The single box size is the outer size of the product package.
Spare parts: 20" bowl 5-FK-GD-YED-06 · Head 5-FK-GS-YED-8 · Gasket 5-FK-GD-YED-09 · Silicone grease 5-FK-GA-YED-10 · Threaded nipple 5-FK-GS-YED-12/13/14 · Socket clip 5-FK-GS-YED-15.
Technical Specifications
Operating Conditions
- Max. operating pressure
- 8.6 bar (125 psi)
- Min. operating pressure
- 0.5 bar (7.25 psi)
- Operating temperature
- 4 - 45 °C (39.2 - 113 °F)
- Water pH
- 6.5 - 9.5
- Suitable cartridge
- 20" standard, 2.5" dia., DOE
- Use
- Cold water line
Materials and Construction
- Head
- Reinforced polypropylene (PP), blue
- Bowl
- Clear SAN
- Port thread
- Threaded nipple (interchangeable)
- Gasket
- Elastomer (O-ring), pre-greased with silicone
- Box contents
- Wrench, bracket, screws, silicone grease
Operating Limits and Use Outside Them
| Parameter | Limit | Below | Above |
|---|---|---|---|
| Operating pressure | 0.5 - 8.6 bar | Flow drops; the gasket may not seat fully | Cracking and leaks at bowl and head; fit a pressure reducer |
| Water temperature | 4 - 45 °C | Freezing cracks the bowl; plastic becomes brittle | The bowl softens and deforms; sealing fails |
| Water pH | 6.5 - 9.5 | Acidic water wears gaskets and threads | Scale build-up and early gasket ageing |
Filter Change and Maintenance
- Shut off the mains water.
- Loosen the air vent (metal screw) to relieve the pressure in the system.
- Remove the hanger; open the bowl with the original wrench, clean it and insert the new filter.
- Check or renew the gasket and grease it with the silicone grease supplied in the box (5-FK-GA-YED-10).
- Fit the bowl to the head and tighten with the wrench; open the water and repeat the air venting.
Gaskets are supplied pre-greased; re-grease them at filter changes. Use PTFE tape only (no hemp or liquid sealant). Check for leaks for the first 48 hours; replace the housing at least every 5 years.
Packaging
| Stock Code | Box Size (mm) | Pcs / Box |
|---|---|---|
| 5-FK-GS-20-D20 | 645 × 475 × 360 | 4 |
| 5-FK-GS-20-D25 | 645 × 475 × 360 | 4 |
| 5-FK-GS-20-D32 | 645 × 475 × 360 | 4 |
The housing wrench, bracket, mounting screws and silicone grease (5-FK-GA-YED-10) are included in the box.
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.
