GD5-2 Duplex Filter Housing
5" · Duplex · 1/2" - 1" metal (brass) thread · Clear bowl
Ready-made duplex set of two 5" filter housings joined on a common bracket. It takes standard 5" × 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 × 5" · 2.5" dia.
- Connection
- 1/2" - 1" metal (brass) thread
- Operating pressure
- 0.5 - 8.6 bar
- Operating temperature
- 4 - 45 °C
Stock codes5-FK-GD-5-D205-FK-GD-5-D255-FK-GD-5-D32
Overview
It consists of a blue head and a clear bowl, which lets the cartridge condition be checked from outside. The metal (brass) threaded ports in the head are available in 1/2", 3/4" and 1" sizes.
Features
- Clear bowl shows the cartridge condition
- Metal (brass) threaded ports
- Fits standard 5" 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-GD-5-D20 | GD5-2 Duplex Filter Housing 1/2" | 1/2" | 12 - 18 | 2 × 5" | 235 × 115 × 210 |
| 5-FK-GD-5-D25 | GD5-2 Duplex Filter Housing 3/4" | 3/4" | 20 - 25 | 2 × 5" | 235 × 115 × 210 |
| 5-FK-GD-5-D32 | GD5-2 Duplex Filter Housing 1" | 1" | 35 - 40 | 2 × 5" | 235 × 115 × 210 |
Port threads are BSPP. * Recommended flow range by connection size. The single box size is the outer size of the product package.
Spare parts: 5" bowl 5-FK-GD-YED-04 · Gasket 5-FK-GD-YED-09 · Silicone grease 5-FK-GA-YED-10 · Wrench 5-FK-GD-YED-02.
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
- 5" standard, 2.5" dia., DOE
- Use
- Cold water line
Materials and Construction
- Head
- Reinforced polypropylene (PP), blue
- Bowl
- Clear SAN
- Port thread
- Metal (brass)
- 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 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-GD-5-D20 | 645 × 475 × 360 | 14 |
| 5-FK-GD-5-D25 | 645 × 475 × 360 | 14 |
| 5-FK-GD-5-D32 | 645 × 475 × 360 | 14 |
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.
