CHECK VALVES AND STRAINERS

"Y" Type strainer DN40-300

Application

Sewerage Network protection

Network Protection

Product family

Pipeline protection

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

Valves range

From DN40 to DN300.
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 PN16 = BS 4504 section 3.2 table 11 – C2 PN16 = DIN 2501 PN16

** ISO 7005 – 2 table 8 ISO PN10 = BS 4504 section 3.2 table 10- C2 PN10 = DIN 2501 PN10

Technical design


40	16	200	150	110	170	6.5	RCA40QACHL
50	16	230	165	120	190	8.5	RCA50QACHL
65	16	290	185	140	220	12	RCA65QACHL
80	16	310	200	165	265	17	RCA80QACHL
100	16	350	220	220	340	25	RCB10QACHL
125	16	400	250	260	410	39	RCB12QACHL
150	16	480	285	300	475	61	RCB15QACHL
200	10	600	340	360	580	106	RCB20QABHL
200	16	600	340	360	580	109	RCB20QAAHL
250	10	730	395	470	680	137	RCB25QABHL
250	16	730	405	470	680	125	RCB25QAAHL
300	10	850	445	560	820	187	RCB30QABHL
300	16	850	460	560	820	171	RCB30QAAHL

Features

Filtering Cartridge material

The filtering element is a meshed screen of size 2 mm, supported inside of a 1 mm thickness cylindrical metal sheet of with square aperture area of section 10mm10mm.

DN	E	F
mm	mm	mm
40	47	91
50	57	105
65	73	123
80	88	144
100	108	184
125	135	221
150	160	260
200	208	335
250	231	360
300	281	390

Material and coatings

Item	Description	Material	Coating
1	Body	Cast iron FGL 250	Epoxy 250 microns
2	Filtering element	Inox 1-4301
3	Lid fitted with a drain plug of size ½ inch	Cast iron FGL 250	Epoxy 250 microns
4	Screws and bolts		Inox A2

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 a new filter
DN	40	45	65	80	100	125	150	200	250	300
Kv	44	56	89	127	200	332	494	675	1260	1735

Installation, maintenance

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 : prévoir le dégagement de la cartouche filtrante

Maintenance

The filtering Cartridge must be regularly inspected and cleaned.

After each repairable 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 supply.