‘’Y’’ Type Strainer
All “Y“ type strainer valves offered by SAINT-GOBAIN PAM are designed:
- To protect all downstream installed valves by retaining all debris which could be conveyed by the fluid inside the water distribution pipeline.
- To get the best hydraulic working conditions and also an efficient protection in the water distribution system due to its ‘’Y’’ body shape and the filtering cartridge position.
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Range
- From DN350 to DN700.
- Designed for a pressure rating of 16 bars.
- Flanges drilling connection in accordance with ( to be stated when ordering ):
ISO 7005 – 2 table 9 ISO PN 16 = BS 4504 section 3.2 table 11 - C2 PN16 = DIN 2501 PN16
ISO 7005 – 2 table 8 ISO PN 10 = BS 4504 section 3.2 table 10 - C2 PN10 = DIN 2501 PN10
Technical design
| 350 | 10 | 980 | 505 | 590 | 1060 | 203 | RCB35QABHL |
| 350 | 16 | 980 | 520 | 590 | 1060 | 234 | RCB35QAAHL |
| 400 | 10 | 1100 | 565 | 670 | 1195 | 275 | RCB40QABHL |
| 400 | 16 | 1100 | 580 | 670 | 1195 | 313 | RCB40QAAHL |
| 450 | 10 | 1200 | 615 | 740 | 1320 | 341 | RCB45QABHL |
| 450 | 16 | 1200 | 640 | 740 | 1320 | 393 | RCB45QAAHL |
| 500 | 10 | 1250 | 670 | 800 | 1425 | 400 | RCB50QABHL |
| 500 | 16 | 1250 | 715 | 800 | 1425 | 475 | RCB50QAAHL |
| 600 | 10 | 1450 | 780 | 935 | 1665 | 541 | RCB60QABHL |
| 600 | 16 | 1450 | 840 | 935 | 1665 | 711 | RCB60QAAHL |
| 700 | 10 | 1650 | 895 | 1080 | 1920 | 774 | RCB70QABHL |
| 700 | 16 | 1650 | 910 | 1080 | 1920 | 912 | RCB70QAAHL |
Features
Filtering Cartridge material
The filtering element is a meshed screen of size 2 mm, supported inside of a 1mm thickness cylindrical metal sheet of with square aperture area of section 10mmx10mm.
| DN | E | F |
|---|---|---|
| mm | mm | mm |
| 350 | 306 | 592 |
| 400 | 341 | 672 |
| 450 | 386 | 742 |
| 500 | 431 | 802 |
| 600 | 525 | 952 |
| 700 | 620 | 1092 |
Material and coating
| Item | Description | Material | Coating |
|---|---|---|---|
| 1 | Body | Steel EN 10025 S235JR | Epoxy 250 microns |
| 2 | Filtering element | Steel type Z6 CN 18-9 | |
| 3 | Lid fitted with a drain plug of size ½ inch | Steel EN 10025 S235JR | Epoxy 250 microns |
| 4 | Screws and bolts | Steel EN 10025 Grade 6/8 | Zinc coated |
Hydraulic characteristics
Headloss calculation
With ‘’Kv‘’ flow coefficient it is possible to determinate the headloss inside the filter by application of the hereunder stated formula:
with ΔP = headloss in bar, Q = flow rate in m³/hour, Kv = flow coefficient in m³/hour
Headloss with new filter
| DN | 350 | 400 | 450 | 500 | 600 | 700 |
|---|---|---|---|---|---|---|
| Kv | 1790 | 2341 | 2961 | 3661 | 5275 | 7184 |
Installation
The double flanged ‘’Y‘’ type strainer valve must be installed on the upstream side of the valve to be protected.
When valve installing instructions :
- On valve body an arrow indicating the water way circulation inside the filtering cartridge.
- The filtering cartridge must be placed at the bottom position for cleaning and drainage
Typical installation of "Y" type strainer valve
Attention: Before the “Y“ type strainer valve installation in valve chamber, take care to get enough space in order to take off the filtering cartridge for maintenance
Maintenance
The filtering cartridge must be regularly inspected and cleaned.
After each damage on the main, systematically it must be inspected and cleaned out of all debris. Take care when pipeline washing operation does not damage the filter cartridge.
After the filtering cartridge removal and in order to get a perfectly compression of the sealing gasket between the valve body and the lid, it is recommended to screw on bolting one to one opposite side .
The filtering cartridge and its sealing gasket are such as spare parts
