Strainer AT 4028B

Gray iron strainer with flanges, PN 16. Stainless steel strainer insert with mesh width 0,6 mm. For warm water, hot water and cooling water.

Dimension range	DN 15 to DN 400
PN	16
Temperature range	-10 °C to +350 °C
Material	Gray iron

Variations
Product information

Variations

Article number	Amount
AT 4028B15 5062900
AT 4028B20 5062901
AT 4028B25 5062902
AT 4028B32 5062903
AT 4028B40 5062904
AT 4028B50 5062905
AT 4028B65 5062906
AT 4028B80 5062907
AT 4028B100 5062908
AT 4028B125 5062909
AT 4028B150 5062910
AT 4028B200 5062911
AT 4028B250 5062912
AT 4028B300 5062913

Product information

Main facts

Dimension range	PN	Temperature range	Material
DN 15 - 400	16	-10°C to +300°C	Gray iron

Range of application

Strainer for mechanical cleaning of warm water, hot water, cooling water, petroleum products, neutral fluids and steam.

Quality assurance

CE-marking
The strainers meets the requirements in PED 2014/68/EU, pressure equipment directive, according to Category I. fluid group 2.

Material specification

Pos	Component	AT 4028B
1	Body	Gray iron EN-GJL-250
2	Strainer insert	Stainless steel 1.4301
3	Cover	Gray iron EN-GJL-250
4	Cover gasket	Graphite CrNiSt
5	Cleaning plug /	Steel C35E
	Diff.pressure plug

Dimensions and weight DN15-80

DN	15	20	25	32	40	50	65	80
A	130	150	160	180	200	230	290	310
B	90	100	115	135	150	155	175	205
C	135	150	180	215	240	250	285	330
D AT 4028B	95	105	115	140	150	165	185	200
D AT 4029B	95	105	115	140	150	165	185	200
Size cleaning plug	G3/8	G3/8	G3/4	G3/4	G1	G1	G1	G1
Diff. pressure plug	G1/4	G1/4	G1/4	G1/4	G3/8	G3/8	G3/8	G3/8
Height strainer insert	56	68	82	98	114	119	134	149
Diam. strainer insert	23	28	36	42	50	61,5	78,5	89,5
Cover gasket, Dy	46	46	56	68	79	87	102	122
Cover gasket, Di	36	36	46	56	68	75	90	110
Weight AT 4028B	2,6	3,0	4,3	6,8	8,8	11,0	14,6	18,6
Weight AT 4029B	2,6	3,0	4,3	6,8	9,0	11,0	14,6	18,6
Dimension in mm, weight in kg

Dimensions and weight DN100-400

DN	100	125	150	200	250	300	350	400
A	350	400	480	600	730	850	980	1100
B	275	325	397	535	670	680	755	835
C	365	425	480	610	915	1110	1200	1320
D AT 4028B	220	250	285	340	405	460	520	580
D AT 4029B	220	250	285	340	405	**	**	**
Size cleaning plug	G11/2	G11/2	G11/2	G11/2	G11/2	G11/2	G11/2	G11/2
Diff. pressure plug	G3/8	G3/8	G3/8	G3/8	G3/8	G3/8	G3/8	G3/8
Height strainer insert	169	199	224	284	434	555	640	695
Diam. strainer insert	109,5	137,5	160	210	258	308	365	415
Cover gasket, Dy	135	170	195	270	300	375	425	475
Cover gasket, Di	120	151	175	245	275	350	390	440
Weight AT 4028B	27,0	38,5	54,5	110	165	285	373	461
Weight AT 4029B	27,0	38,5	54,5	102,7	165	285	**	**
Dimensions in mm, weight in kg

Function and design

Effectively catches the solid particles which are bigger than the strainer insert mesh when the meda is passing through the cylindrical insert.

Kvs

DN	15	20	25	32	40	50	65	80	100	125	150	200	250	300	350	400
K_VS	6,2	9,6	14,2	23,1	36,6	53,7	95,1	137,1	206,4	268,8	401	706	1229	1902	2611	3438

Pressure and temperature

Min/Max working temperature.	Max working temperature.
Pressure and temperature Acc. to DIN EN 1092-2:1997
°C	bar
-10	16
120	16
150	14,4
180	13,4
200	12,8
230	11,8
250	11,2
300	9,6

Accessories and options

The standard insert mesh width is 0,6 mm. On request, the strainer can be provided with alternative mesh sizes, such as:
0.1, 0.25, 0.5, 1.0, 1,5, 2.0, 3.0, 5,0 and 8.0 mm.

Internal and external powder-coated epoxi is used for installations with hygiene requirements for water intended for human consumption or where there is a requirement for internal corrosion protection: AT 4028BE.

For differential pressure measurement across the filter, strainer DN 15-32 has connections G 1/4. DN 40 and larger have connections G 3/8. See AT 1812.

For installation in cooling systems, the filters are available with external rust-preventing, according to system AT 1012.

Installation

In a horizontal pipe the strainer should be mounted with the cover downwards. Note that the flow has to be according to the flow arrow. The strainer can be vertically mounted with a downward flow.

A blow-off valve, e.g. AT 3535A, can be mounted instead of the cleaning plug for easier cleaning of the strainer insert.

Flanges

Fig. no.		Flanges acc.to
AT 4028B		SS EN1092-PN 16

Maintenance and spare parts

Highly increased pressure drop across the filter indicates that the strainer insert should be cleaned.
Strainer inserts AT 4028AF and cover gaskets AT 4028AL and AT 4028BL are available as spare parts.

Marking

Manufacturer, DN, PN, material and flow arrow.

How to order

DN	AT-no	RSK-no
Example: AT 4028B50
15	4028B15	506 29 00
20	4028B20	506 29 01
25	4028B25	506 29 02
32	4028B32	506 29 03
40	4028B40	506 29 04
50	4028B50	506 29 05
65	4028B65	506 29 06
80	4028B80	506 29 07
100	4028B100	506 29 08
125	4028B125	506 29 09
150	4028B150	506 29 10
200	4028B200	506 29 11
250	4028B250	506 29 12
300	4028B300	506 29 13

How to order

DN	AT-no	RSK-no
Example: AT 4028B50
15	4028B15	506 29 00
20	4028B20	506 29 01
25	4028B25	506 29 02
32	4028B32	506 29 03
40	4028B40	506 29 04
50	4028B50	506 29 05
65	4028B65	506 29 06
80	4028B80	506 29 07
100	4028B100	506 29 08
125	4028B125	506 29 09
150	4028B150	506 29 10
200	4028B200	506 29 11
250	4028B250	506 29 12
300	4028B300	506 29 13

Strainer AT 4028B

Variations

Product information

Main facts

Range of application

Quality assurance

Material specification

Dimensions and weight DN15-80

Dimensions and weight DN100-400

Function and design

Kvs

Pressure and temperature

Accessories and options

Installation

Flanges

Maintenance and spare parts

Marking

How to order

How to order

Visiting address

Contact