‘’Y’’ Type Strainer

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

‘’Y’’ Type Strainer

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CHECK VALVES and STRAINERS
CHECK VALVES and STRAINERS
PRODUCT FAMILY
PIPELINE PROTECTION
PIPELINE PROTECTION
Main features

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.

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

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

mmmmmm

350

306

592

400

341

672

450

386

742

500

431

802

600

525

952

700

620

1092

Material and coating

Items

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:

ΔP = Q² Kv²

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