Filters for purification of liquids or waters

Filters for purification of liquids

The filtering elements of deep type of mechanical cleaning

The filtering elements of deep type represent a multilayered cylindrical design from polypropylene fibers, with the changing porosity on filter-bed section.

The principle of a filtation is based on fractional department of particles at the expense of gradual increase in a subtlety of filtering on layers of the filtering element thanks to what high performance and efficiency of cleaning, long service life of the filtering elements is provided.

The filtering elements find broad application in food, chemical, electronic, printing, perfumery and other industries.

So wide scope is caused by high chemical resistance of polypropylene and its resistance to bacterial pollution.

We recommend filter elements for a rough filtration and thin cleaning:

drinking, technological and turnover water;
alcoholic and soft drinks, juice, beer;
chemical reactants, acids, alkalis, organic substances, galvanic solutions, removal of firm catalysts, etc.;
liquid varnishes and paints;
vegetable and mineral oils;
air and gases in case of normal and raised (to 80 °C) temperature;
and also for removal of opalescence and colloids in various liquids.

Distinctive features of our filtering elements:

the regulated change of porosity of a deep filter-bed allowing to make the filtering elements combining the finishing filter and the prefilter;
the multilayered porous structure providing the increased contaminant capacity;
lack of migration of fibers from a filter-bed;
high chemical resistance to a wide range of chemical reagents;
low content of the extracted substances binding absence, lubricants and surfactants in case of production;
broad range of working temperatures (to +80 °C);
low cost;
when filtering water solutions the preliminary gidrofilization isn't required;
broad range of the filtering elements with efficiency of keeping of particles from 0,5 microns to 100 microns;
the nomenclature of the filtering elements of various length for ensuring required performance of process of filtering.

Sanitary handling and sterilization is made in any manner on OST 42-21-2-85 (except air). The filtering elements can be partially regenerated, for example by washing with clear water with the return current. More complete regeneration is reached by dissolution of a deposit with the subsequent washing. Efficiency of regeneration increases with increase in temperature of the regenerating solution and its pressure.

Productivity on water for elements length 250 mm

Maximum pressure difference of the filtered liquid on an element depending on working temperature

Working temperature, С°	Maximum pressure difference, MPa
30	0.4
50	0.3
70	0.2
90	0.1

*Parameters are specified for liquids in which there is no softening, swelling or other impact on material of elements.

Structure of the filtering element

The filtering element for purification of liquids of mechanical impurity represents a multilayered cylindrical design from nonwoven polymeric fibrous fabric, with the changing size of a time on filter-bed section.

Structure of the filtering element is formed on the basis of the analysis of particle size distribution of firm particles in the filtered liquid and technological parameters of process of a filtration. Each structural element provides compliance of a certain parameter of the filtering element is set requirements. That which approach allows to adapt the filtering element to specific conditions of operation and to provide an optimality of his characteristics.

Modern processing equipment with high extent of automation allows to carry out quickly multiple parameter optimization of structure of the filtering element. In combination with continuous control of parameters of the filtering elements, it allows to receive high-quality products for the most various scopes.

The filtering FP.PO elements for cleaning of liquids without adapters

1	The filtering element from propylene
2	Without adapters
	0 - external Ø 61 mm
3	Working length
	1 - 250 mm 3 - 500 mm 5 - 750 mm 6 - 1000 mm
4	The size of the withheld particles, micron, not less

Type of the filtering element	Overall dimensions, mm			Working length, mm	Productivity on water (m3/hour) with an extreme pressure of 0,01 MPas for the filtering elements with the holding ability
Type of the filtering element	L	D	d	Working length, mm	0,5 micron	1,0 micron	5,0 micron	10,0 micron	20,0 micron	50,0 micron, 70,0 micron
ФП.П0-1	250	61	26	250	0,2	0,25	0,8	1,3	1,8	3,5
ФП.П0-2	300	61	26	300	0,24	0,3	0,96	1,8	2,2	3,5
ФП.П0-3	500	61	26	500	0,4	0,5	1,6	2,6	3,5	3,5
ФП.П0-4	560	61	26	560	0,44	0,56	1,75	3,4	3,5	3,5
ФП.П0-5	150	61	26	750	0,6	0,75	2,4	3,5	3,5	3,5
ФП.П0-6	1000	61	26	1000	0,8	1	3,2	3,5	3,5	3,5

In coordination with the customer production of the filtering elements of other types and the sizes is possible.

The filtering FP.PT elements for cleaning of liquids without adapters

1	The filtering element from propylene
2	Without adapters
	T - external Ø 66 mm
3	Working length
	1 - 250 mm 3 - 500 mm 5 - 750 mm 6 - 1000 mm
4	The size of the withheld particles, micron, not less

Type of the filtering element	Overall dimensions, mm			Working length, mm	Productivity on water (m3/hour) with an extreme pressure of 0,01 MPas for the filtering elements with the holding ability
Type of the filtering element	L	D	d	Working length, mm	0,5 micron	1,0 micron	5,0 micron	10,0 micron	20,0 micron	50,0 micron, 70,0 micron
ФП.ПТ-1	250	66	26	250	0,2	0,25	0,8	1,3	1,8	3,5
ФП.ПТ-2	300	66	26	300	0,24	0,3	0,96	1,8	2,2	3,5
ФП.ПТ-3	500	66	26	500	0,4	0,5	1,6	2,6	3,5	3,5
ФП.ПТ-4	560	66	26	560	0,44	0,56	1,75	3,4	3,5	3,5
ФП.ПТ-5	150	66	26	750	0,6	0,75	2,4	3,5	3,5	3,5
ФП.П0-6	1000	66	26	1000	0,8	1	3,2	3,5	3,5	3,5

In coordination with the customer production of the filtering elements of other types and the sizes is possible.

The filtering FP.VV elements for cases BIG BLUE

1	The element filtering for cases BIG BLUE
2	Length, inches
3	The size of the withheld particles, micron, not less

Type of the filtering element	Overall dimensions, mm			Working length, mm	Productivity on water (m3/hour) with an extreme pressure of 0,01 MPas for the filtering elements with the holding ability
Type of the filtering element	L	D	d	Working length, mm	0,5 micron	1,0 micron	5,0 micron	10,0 micron	20,0 micron	50,0 micron, 70,0 micron
ФП.ВВ-10"	254	114	26	254	0,2	0,25	0,8	1,3	1,8	3,5
ФП.ВВ-20"	508	114	26	508	0,4	0,5	1,6	2,6	3,5	3,5

The filtering FP.VV elements are intended for installation in BIG BLUE cases.
The filtering elements are issued with the holding ability of 1,5,10,25,50,75,100 micron
In coordination with the customer production of the filtering elements of other types and the sizes is possible.

The filtering FP.KO elements for purification of liquids

The adapter with a mating ring of Ø 44 mm since one end and chanceless - since other end

1	The filtering element from propylene
2	The adapter with a mating ring of Ø 44 mm since one end and chanceless - since other end
3	Working length
	1 - 250 mm 2 - 300 mm 3 - 350 mm 4 - 560 mm 5 - 750 mm 6 - 1000 mm
4	The size of the withheld particles, micron, not less

Type of the filtering element	Overall dimensions, mm			Working length, mm	Productivity on water (m3/hour) with an extreme pressure of 0,01 MPas for the filtering elements with the holding ability
Type of the filtering element	L	D	d	Working length, mm	0,5 micron	1,0 micron	5,0 micron	10,0 micron	20,0 micron	50,0 micron, 70,0 micron
ФП.КО-1	283	66	44	250	0,2	0,25	0,8	1,3	1,8	3,5
ФП.КО-2	333	66	44	300	0,24	0,3	0,96	1,8	2,2	3,5
ФП.КО-3	533	66	44	500	0,4	0,5	1,6	2,6	3,5	3,5
ФП.КО-4	593	66	44	560	0,44	0,56	1,75	3,4	3,5	3,5
ФП.КО-5	783	66	44	750	0,6	0,75	2,4	3,5	3,5	3,5
ФП.КО-6	1033	66	44	1000	0,8	1	3,2	3,5	3,5	3,5

In coordination with the customer production of the filtering elements of other types and the sizes is possible.

The filtering FP.KN elements for purification of liquids

The adapter with a mating ring of Ø 44 mm since one end and chanceless - since other end

1	The filtering element from propylene
2	The adapter with a mating ring of Ø 44 mm since one end and chanceless - since other end
3	Working length
	1 - 250 mm 2 - 300 mm 3 - 500 mm 4 - 560 mm 5 - 750 mm 6 - 1000 mm
4	The size of the withheld particles, micron, not less

Type of the filtering element	Overall dimensions, mm			Working length, mm	Productivity on water (m3/hour) with an extreme pressure of 0,01 MPas for the filtering elements with the holding ability
Type of the filtering element	L	D	d	Working length, mm	0,5 micron	1,0 micron	5,0 micron	10,0 micron	20,0 micron	50,0 micron, 70,0 micron
ФП.КН-1	271	70	44	250	0,2	0,25	0,8	1,3	1,8	3,5
ФП.КН-2	321	70	44	300	0,24	0,3	0,96	1,8	2,2	3,5
ФП.КН-3	521	70	44	500	0,4	0,5	1,6	2,6	3,5	3,5
ФП.КН-4	581	70	44	560	0,44	0,56	1,75	3,4	3,5	3,5
ФП.КН-5	771	70	44	750	0,6	0,75	2,4	3,5	3,5	3,5
ФП.КН-6	1021	70	44	1000	0,8	1	3,2	3,5	3,5	3,5

In coordination with the customer production of the filtering elements of other types and the sizes is possible.

The filtering FP.K elements for purification of liquids

The adapter with an outside thread since one end and chanceless - since other end

1	The filtering element from propylene
2	The adapter with an outside thread since one end and chanceless - since other end
3	Carving type
4	Working length
	1 - 250 mm 2 - 300 mm 3 - 500 mm 4 - 560 mm 5 - 750 mm 6 - 1000 mm
5	The size of the withheld particles, micron, not less

Type of the filtering element	Overall dimensions, mm				Working length, mm	Productivity on water (m3/hour) with an extreme pressure of 0,01 MPas for the filtering elements with the holding ability
Type of the filtering element	L	D	d	M	Working length, mm	0,5 micron	1,0 micron	5,0 micron	10,0 micron	20,0 micron	50,0 micron, 70,0 micron
ФП.К1"(1/2")-1	285	70	23(14)	1"(1/2")	250	0,2	0,25	0,8	1,3	1,8	3,5
ФП.К1"(1/2")-2	335	70	23(14)	1"(1/2")	300	0,24	0,3	0,96	1,8	2,2	3,5
ФП.К1"(1/2")-3	535	70	23(14)	1"(1/2")	500	0,4	0,5	1,6	2,6	3,5	3,5
ФП.К1"(1/2")-4	595	70	23(14)	1"(1/2")	560	0,44	0,56	1,75	3,4	3,5	3,5
ФП.К1"(1/2")-5	785	70	23(14)	1"(1/2")	750	0,6	0,75	2,4	3,5	3,5	3,5
ФП.К1"(1/2")-6	1035	70	23(14)	1"(1/2")	1000	0,8	1	3,2	3,5	3,5	3,5

In coordination with the customer production of the filtering elements of other types and the sizes is possible.
The filtering elements are issued with an outside taper thread 1/2" and 1" on the adapter.

The filtering FP.KB elements for purification of liquids

The adapter with a mating ring of Ø 56 mm since one end and chanceless - since other end

1	The filtering element from propylene
2	The adapter with a mating ring of Ø 56 mm since one end and chanceless - since other end
3	Working length
	1 - 250 mm 3 - 500 mm 5 - 750 mm 6 - 1000 mm
4	The size of the withheld particles, micron, not less

Type of the filtering element	Overall dimensions, mm			Working length, mm	Productivity on water (m3/hour) with an extreme pressure of 0,01 MPas for the filtering elements with the holding ability
Type of the filtering element	L	D	d	Working length, mm	0,5 micron	1,0 micron	5,0 micron	10,0 micron	20,0 micron	50,0 micron, 70,0 micron
ФП.КБ-1	320	70	56,5	250	0,2	0,25	0,8	1,3	1,8	3,5
ФП.КБ-2	370	70	56,5	300	0,24	0,3	0,96	1,8	2,2	3,5
ФП.КБ-3	570	70	56,5	500	0,4	0,5	1,6	2,6	3,5	3,5
ФП.КБ-4	630	70	56,5	560	0,44	0,56	1,75	3,4	3,5	3,5
ФП.КБ-5	820	70	56,5	750	0,6	0,75	2,4	3,5	3,5	3,5
ФП.КБ-6	1070	70	56,5	1000	0,8	1	3,2	3,5	3,5	3,5

In coordination with the customer production of the filtering elements of other types and the sizes is possible.

The filtering FP.P elements, ФП.Пп, FP.ппр for purification of liquids

1	The filtering element from propylene
2	П - the checkpoint adapter since one end and chanceless from another Ппр - checkpoint with adapters Пп - checkpoint without adapters
3	The size of the withheld particles, micron, not less
4	Working length, mm

Type of the filtering element	Overall dimensions, mm			Working length, mm	Productivity on water (m3/hour) with an extreme pressure of 0,01 MPas for the filtering elements with the holding ability
Type of the filtering element	L	D	d	Working length, mm	0,2 micron	0,5 micron	1,0 micron	5,0 micron	10,0 micron	20,0 micron	50,0 micron, 70,0 micron
ФП.П-Х-250	260	53	26,2	250	0,1	0,2	0,25	0,8	1,3	1,8	3,5
ФП.П-Х-480	490	53	26,2	480	0,2	0,4	0,5	1,6	2,6	3,5	3,5
ФП.Ппр-Х-250	266	53	26	250	0,1	0,2	0,25	0,8	1,3	1,8	3,5
ФП.Ппр-Х-480	496	53	26	480	0,2	0,4	0,5	1,6	2,6	3,5	3,5
ФП.Пп-х-250	250	53	26,2	250	0,1	0,2	0,25	0,8	1,3	1,8	3,5
ФП.Пп-Х-480	480	53	26,2	480	0,2	0,4	0,5	1,6	2,6	3,5	3,5

The filtering FP.L elements for purification of liquids of paints and varnishes

1	The filtering element from propylene
2	For purification of liquid paints and varnishes
3	The size of the withheld particles, micron, not less
4	Working length, mm

Type of the filtering element	Overall dimensions, mm			Working length, mm
Type of the filtering element	L	D	d	Working length, mm
ФП.Л	250	66	26	250
ФП.Л	500	66	26	500
ФП.Л	750	66	26	750

The filtering elements are issued with the holding ability of 1,5,10,25,50,75,100 micron
и and are intended for a filtration of liquid paints and varnishes.
Maximum pressure difference of the filtered liquid on an element depending on working temperature.

Working temperature до 60° С

Working temperature	Maximum pressure difference, MPa
30	0,4
60	0,2

In coordination with the customer production of the filtering elements of other types and the sizes is possible.

The filtering elements without framework FP.BK of the increased productivity

1	The filtering element from propylene
2	Inside diameter, mm
3	Outer diameter, mm
4	Length, mm
5	The size of the withheld particles, micron, not less

Type of the filtering element	Overall dimensions, mm			Productivity on water (m3/hour) with an extreme pressure of 0,01 MPas for the filtering elements with the holding ability
Type of the filtering element	L	D	d	0,5 micron	1,0 micron	5,0 micron	10,0 micron	20,0 micron	50,0 micron, 70,0 micron
ФП.БК-32-80-250-Х	250	80	32	0,18	0,23	0,75	1,18	1,64	3,20
ФП.БК-35-65-250-Х	250	65	35	0,21	0,26	0,84	1,36	1,88	3,66
ФП.БК-38-80-250-Х	250	80	38	0,24	0,30	0,95	1,55	2,14	4,17
ФП.БК-50-90-250-Х	250	90	50	0,37	0,46	1,49	2,42	3,35	6,50
ФП.БК-58-90-250-Х	250	90	58	0,48	0,60	1,90	3,10	4,30	8,30
ФП.БК-63-180-250-Х	250	180	63	0,55	0,70	2,20	3,50	4,90	9,60
ФП.БК-69-108-250-Х	250	108	69	0,64	0,80	2,58	4,10	5,80	11,28
ФП.БК-70-110-250-Х	250	110	70	0,66	0,82	2,64	4,30	5,90	11,50
ФП.БК-86-130-250-Х	250	130	86	0,95	1,20	3,80	6,10	8,50	16,50
ФП.БК-105-150-250-Х	250	150	105	1,37	1,70	5,40	8,80	12,30	23,00
ФП.БК-122-176-250-Х	250	176	122	1,80	2,25	7,20	11,70	16,20	30,50
ФП.БК-122-185-250-Х	250	185	122	1,80	2,25	7,20	11,70	16,20	30,50
ФП.БК-130-170-250-Х	250	170	130	2,00	2,50	8,10	13,10	18,20	35,00
ФП.БК-130-200-250-Х	250	200	130	2,00	2,50	8,10	13,10	18,20	35,00
ФП.БК-157-200-250-Х	250	200	157	2,88	3,60	11,50	18,50	25,00	50,00
ФП.БК-172-212-250-Х	250	212	172	3,40	4,20	13,50	22,20	30,50	58,00
ФП.БК-172-222-250-Х	250	222	172	3,40	4,20	13,50	22,20	30,50	58,00

The deferrizing filtering elements

The deferrizing filtering elements are intended for water purification from mechanical particles and release it from soluble compounds of iron in various systems of water treatment (filters, water purifiers, etc.)

The element represents a product of the cylindrical form from the filtering polypropylene material with filling by the deferrizing catalytic agent applied on the punched frame with end connecting details (adapters).

Process of cleaning is carried out by a filtration of mechanical particles and colloids the gradient porous structure formed by layers of polypropylene fibers, oxidation of soluble compounds of iron in an external layer of the element containing the catalyst and further deduction of educated insoluble particles element volume.

1	The filtering element from propylene
2	Adapter type
3	Working length
	1 - 250 mm 2 - 300 mm 3 - 500 mm 4 - 560 mm 5 - 750 mm 6 - 1000 mm
4	Deferrization

Technical characteristics

Outer diameter, mm	66
Working length, mm	250, 500, 750, 1000
The size of the withheld particles, micron	1,0
Productivity for an element length 250 mm, l/h	250
Resource of an element long 250 mm (at the content of the general iron in initial water of 1,0-1,5 mg/l), not less, m3	12

In coordination with the customer production of the filtering elements of other types and the sizes is possible.
Elements can be adapted to any type of the holder.

The coal filtering elements

The coal filtering elements are intended for improvement of taste and a smell of water, removal of chlorine, harmful organic compounds and pesticides.

The element represents a product of the cylindrical form from the filtering polypropylene material with filling of pore space fine particles of the absorbent carbon applied on the punched frame with end connecting details (adapters). Elements contain a prefilter with a subtlety of cleaning of 10-20 micron and the finishing filter firmness of cleaning of 1 or 5 micron.

The main advantages of the bactericidal filtering elements:

use of fine particles of absorbent carbon (0,05-0,4 mm);
combination in one element of a filtration and sorption;
mechanical deduction of particles of absorbent carbon material fibers (lack of binding) that increases a resource and overall performance of an element.

1	The filtering element from propylene
2	Adapter type
3	Working length
	1 - 250 mm 2 - 300 mm 3 - 500 mm 4 - 560 mm 5 - 750 mm 6 - 1000 mm
4	Coal

Technical characteristics

Outer diameter, mm	66,114
Working length, mm	250, 500, 750, 1000
The size of the withheld particles, micron	1-5

The recommended productivity for an element length 250 mm

Outer diameter 66 mm, l/h	150-200
Outer diameter 114 mm, l/h	400-500

Content of coal for an element length 250 mm

Outer diameter 66 mm, l/h	225-250
Outer diameter 114 mm, l/h	700-740

In coordination with the customer production of the filtering elements of other types and the sizes is possible.
Elements can be adapted to any type of the holder.

The sheet filtering material(ГУ1301-34-95)

The sheet filtering material represents the nonwoven chemically resistant filtering fabric from the fibers of polyethylene or polypropylene located chaotically and welded among themselves in places of intersection.

Materials with various thickness of fibers and density of their stacking, resistant in acid and alkaline environments, having limited solubility in the aromatic and chlorinated hydrocarbons and water repellency allow to have opportunities of the production technology.

1	The filtering material polypropylene
2	Thickness
3	The size of the withheld particles

Scope:

for filtering sewage and industrial drains;
in systems of water treatment and water purification;
in paint and varnish industry;
in chemical industry;
in mining and metallurgical processes;
in systems of aircleaning;
in food and pharmaceutical industry;

Application allows:

to save cotton and synthetic fabrics;
to replace expensive grids from brass, stainless steel and other metal materials;
to carry out a filtration of acids, alkalis and neutral environments, and also the air and gases containing corrosion and aggressive components;
to carry out thin purification of solutions in medical and electronic industry, etc.

Technical characteristics

Diameter of fiber, micron	3-00
Thickness, mm	1-15
Density, г/см3	0,1-0,5
Tensile strength, MPa	0,97-1,13
Relative lengthening at a gap, %	85-120
Productivity on water at Р=0.5 kg/cm2, m3/m2h	12,5-39,5
Resistance to an air stream at a speed 1 cm/s, Pa	10-200

The size of the particles withheld at a filtration, micron

Water	20-200
Air	10-500
Varnish	10-200

Filters are frame and disk
(КДФ-120-0,8 ТУ 95.1496-92, КДФ-120-0,8 BH ТУ 95-2375-90)

Фiltra from polymeric materials represent a set of the disks collected on the polyethylene punched framework and form cross ring cracks of conic section. Filters can be as with an internal filter-bed — filtroplast(KDF-120-0.8VN), and without him (KDF-120-0,8).

1	Frame and disk filter
2	Outer diameter, mm
3	Crack width, mm
4	Existence of an inside layer from a filtroplast

Scope:

in technological wells for filtering solutions in case of their fence or forcing in the productive horizons provided by sands from fine-grained and dusty to average and coarse-grained;
in systems of water drainage and melioration;
in the water wells constructed with use of casing pipes for drinking and economic water supply;
at preliminary cleaning natural and sewage;
at the device of a drainage of sandy filters.

Use of filters allows to use them in neutral, acidic and alkaline environments and provides:

mechanical durability;
high stability in hostile environment and to a hydra and to pneumatic blows;
possibility of regeneration (mechanical and chemical) the filter in the well;
durability in comparison with metal analogs.

Technical characteristics

Outer diameter, mm	120
Inside diameter, mm	70
Outer diameter framework, mm	90
Length sections, mm	1000-2000
Crack width, mm	0.8
Porosity, %	14.3-20
Working internal pressure, MPa	1.0-1.25
The axial stretching loading, t	not less 1.5
Наружное сменяющее давление, kgс/см2	до 12
Material	polyethylene, polypropylene, polystyrene

Use of filters with an internal filter-bed gives the chance to use them in various soil conditions without additional protection against instruction and a kolmatation and ensures steady functioning in the water-bearing horizons presented thinly and fine-grained sands. Stuffs applied to production of filters are allowed by the Ministry of Health for use in economic water supply. Pressure head pipes are made of polyethylen(ГОСТ18599-83).

Filters of a beam drainage(ТУ 2291-049-22902507-08)

The filter of a beam drainage represents the punched polyethylene framework (pipe) with the protective filtering covering from a polyethylene grid on which the method of pneumoextrusion applies a filter-bed from polyethylene of high pressure or polypropylene, depending on a gransostav of the water containing breeds. Diameter of the filter provides a certain volume of drainage waters, and in case of need — the admission of pipes for washing of the filter.

1	Фильтр полимерный лучевого дренажа
2	Outer diameter, mm

Scope:

At underground building in the flooded soil (doesn't constrain construction and provides the advancing decrease in levels at any depth);
in vertical and horizontal drainages in systems of water drainage and melioration;
in the water wells constructed with use of casing pipes for drinking and economic water supply;
at preliminary cleaning natural and sewage;
at the device of a drainage of sandy filters;
for protection of surface and underground water against pollution and exhaustion;
strengthening of soil and foundations of the under construction and operating buildings and constructions;
ensuring stability of landslide massifs and excavations.

Features:

use in various soil conditions without additional protection against a silting and a kolmatation;
use in neutral, acidic and alkaline environments with a high mineralization of ground waters;
steady work in the water-bearing horizons presented thinly;
high mechanical durability;
convenience of installation;
simplicity of a design;
wide scale of types of designs and options of execution;
the increased contaminant capacity of the filter;
low hydraulic resistance;
long service life.

Technical characteristics

Outer diameter, mm	105
Inside diameter, mm	70
Length, mm	1040, 2040
The carving is cylindrical metric по ГОСТ 11709-81	М84х4
Porosity of the punched framework, %	20
Retentivity, micron	20...200
Mass of an element, kg	2.62, 5.24
Productivity on clear water, mЗ/h/m	2.0-2.5
Diameter of fiber фильтрующего слоя, mm	0.05-0.20
The axial stretching loading, t	not less 1.5
The axial squeezing loading, t	not less 6.0
Material	polyethylene, polypropylene

Stuffs applied to production of filters are allowed by the Ministry of Health for use in economic water supply. Pressure head pipes are made of polyethylene (ГОСТ 18599-83).