Strainers DN 15-200

TerFom; TerFM - with magnetic inset

TerF; TerFo - with out magnetic inset

Strainers are used to strain dirt particles from water in pipe lines, heating stations, boilers. Strainers provides protection for pumps, meters, valves, heat exchangers, and other elements of installation. For additional water treatment strainers may work with local water network, fitted with rapid sand filters. Used in their technical solutions ensure effective water purification, simple installation and easy maintenance.

Special features:

• inertial strainig,
• sendimental straing,
• mechanical filtration,
• magnetic filtration,
• air separation,
• low pressure loss.

Construction of strainers:

Depending on the construction of strainers there are following types:
TerFOM - made of stailess steel with magnetic inset,
TerF - made of stailess steel,
TerFM - made of carbon steel hot galvanized with magnetic inset,
TerFO - made of carbon steel hot galvanized.

How strainers works:

In the strainers DN15-150 water flows trought inlet (2) to the barrier (8) and is directed to down of vessel to the zone of the magnetic field made by magnetic inset (9), which is mounted in connector (7) (for version TerFOM and TerFM). At the same time it comes to reducing the speed of water and separation solid impurities and air bubbles. A net filter (10) mounted at the top of the vessel is used for final purification of water then water flows by outlet (3). Separated air bubbles in the surface of the filter are discharged by the connector (5). Separated impurities are removed by the connector (6).
In the strainer DN200 water flows by inlet (2) and there is dividing for two streams which are directed downwards and top vessel. The flow occurs through the zone of the field magnetic inset (9) mounted in connectors (7) (for versions of FOM and FM). At the same time it comes to expansion and reduce water velocity, which is accompanied by separation solid contaminants and air bubbles. Then purified water is directed through the internal collector (11) to the outlet (3). Separated air bubbles on the surface filter are discharged by the connector (5). Separated pollutions are removed by the connector (6).
A characteristic feature of strainers are low pressure loss (see Figure hydraulic characteristics). The sequence of steps filter makes more than 95% of pollutants is retained before the net filter, by the magnetic inset. Final purification of water is done by the filter. Analysis of sediments from magnetic inset showed that about 30 ÷ 40% there are paramagnetics (indifferent to the magnetic force). This phenomenon paramagnetics is explained by the fact of their entrainment by the magnetically active particles and the creation of agglomerates.

Strainers with flanged connectors have the authorization to exempt you from having to report the device in the UDT, in order to receipt at the place of installation, approved by the technical COBRTI Instal, certified by PZH.

tachnical specifications:

Strainer type		TerFOM;TerFM; TerF; TerFO
Diameter		15	20	25	25	32	40	50	65	80	100	125	150	200
Flow factor KVs(Δp=1bar)		4,4	9,5	14	14	28,5	31	44	57	126	183	234	272	521
Magnetic inset type	galvanized steel	TerFM												FM
	stainless steel	TerFOM												FOM
With out magnetic inset type	galvanized steel	TerFO												FO
	stainless steel	TerF												F
Connectors		thread			flanged
Temperature		150°C
Pressure		standard-16 bar (special made 6 bar for DN80-200)
Net filter		standard -0,4x0,4mm (special made 0,05x0,05mm to 1,2x1,2mm)
Capacity dm³		1,1	1,1	1,1	4,6	4,6	4,6	5,4	6,3	34	34	34	64	225
Weight kg		2,6	2,6	2,6	9,0	9,5	10,2	13	16	40	45	50	80	164

Hydraulic characteristics:

Dimensions [mm]:

DN	D	H1	H	L	F*	M*
15	108	125	230	165	170	170	thread
20	108	125	230	165	170	170
25	108	125	230	165	170	170
25	159	208	350	295	120	150	flanged
32	159	208	350	295	120	150
40	159	208	350	295	120	150
50	159	250	405	295	160	180
65	159	250	470	295	160	180
80	324	360	665	464	220	240
100	324	360	665	464	220	240
125	324	360	665	464	220	240
150	356	435	820	500	410	330
200	457	775	1550	667	410	420

Selection of strainers