To quickly clean the strainer from accumulated dirt, you can use the drain plug located on the filter cover. For the convenience of servicing the filter without shutting down the system, a drain valve can be installed instead of a plug. In the absence of such a valve, the plug can only be opened when the system is off. Depending on the quality of the working environment and the requirements for the operating conditions of the protected equipment, the flanged filter must be serviced, as a rule, at least once a year. When installing a mesh filter with a mesh mesh smaller than a standard size, the filter should be serviced at least twice a year. When contaminated, the pressure drop across the filter mesh of any manufacturer increases dramatically. It is usually considered that the filter is too clogged if the pressure drop across the filter has increased by 30-50% of the calculated one or exceeded 1 mWC. = 0.1 bar = 0.01 MPa = 10 kPa = 75 mm Hg To completely clean the filter, remove the cover and remove the mesh. Then the mesh must be rinsed under running water to remove foreign particles, inspect for damage, and replace if necessary. When re-installing the cover, it is recommended to use a new gasket.

#	Part name	Material	Material grade according to norms
			RF	EN
1	Corpus	Cast iron	-	DIN GG25
2	Grid	Cast iron	-	DIN GGG40
3	Cover gasket	Stainless steel	-	AISI304
4	Cover cap	Cast iron	-	DIN GG25
5	Lid Drain Plug	Carbon Steel	St 20	GB A3
6	Drain plug gasket	Rubber	Rubber	EPDM
7	Bolts, fixing covers	Carbon Steel	St 20	GB A3
8	Washer for fastening bolts	Carbon Steel	St 20	GB A3

Coarse filters. Dimensions in mm
Article	L	H	H1	Z	f	b
FF.310.04	130	72	115	14	2	14
FF.310.05	150	80	133	14	2	16
FF.310.06	160	90	148	14	2	18
FF.310.07	180	105	175	18	2	18
FF.310.08	200	112	187	18	3	18
FF.310.09	230	135	218	18	3	20
FF.310.10	290	165	258	18	3	20
FF.310.11	310	195	195	18	3	22
FF.310.12	350	230	340	18	3	24
FF.310.13	400	280	405	18	3	26
FF.310.14	480	330	473	23	3	26
FF.310.15	600	390	560	23	3	30
FF.310.16	730	450	653	27	3	32
FF.310.17	850	562	792	27	4	32
FF.310.18	980	640	990	30	4	36
FF.310.19	1100	700	990	30	4	38