Model GPG filter can be used for industrial cooling with low-quality water and also for the other technological processes requiring filtering. It features by the function to get rid of foreign matters by way of rinse reversely and is generally mounted before a heat exchanger or other executive mechanism for the periodic rinse and foreign matters' removal.

1. Model GPG-L filter can work normally under the full flow, which means to keep a high-speed flow to lower the pressure, preventing of the surface dirt due to low flow-rate.
2. It is mounted directly in the pipe network system, no need of any support structure.
3. Saving space.
4. Rinsing and draining sludge automatically, installing a by-pass.

In the normal conditions, the steering valve opens and the water flow is drained out from the exit after being filtered through the filter barrel. When the sludge valve opens, the total flow of the liquid passed through the filter increases and the flow-rate enlarges to have the foreign matters adhered on the pipe wall of the filter. It is impacted and then drained out from the sludge exit. When the steering valve closes and the sludge valve is opened, the water flow is forced to go into the outside of the filter barrel from the screen holes on the inlet section of the barrel, most of which flows out of the exit and the residual portion goes into the filter barrel via the screen holes. And the foreign matters collected section from outside of the barrel to form the reversed rinse onto the filter barrel to get the effect to rinse the foreign matters attached on the screen holes from outside of the filer barrel, the foreign matters are still drained out through the sludge exit.

PN (MPa)	1.0	1.6	2.5
Test pressure (MPa)	1.5	2.4	3.75
Body material	WCB 1Cr18Ni9Ti
material of accessories	0Cr18Ni9Ti
Suitable temperature	≥225oC

DN mm	PN1.0			PN1.6			PN2.5			GPGL				GPGI
	D	D1	Z-φd	D	D1	Z-φd	D	D1	Z-φd	A	B	L	Dg	A	L	Dg
100	220	180	8-18	220	180	8-18	235	190	8-22	265	160	365	32	350	260	32
125	250	210	8-18	250	210	8-18	270	220	8-26	315	190	440	40	438	326	40
150	285	240	8-22	285	240	8-22	300	250	8-26	375	220	520	50	525	390	50
200	345	295	8-22	340	295	12-22	360	310	12-26	500	260	670	65	700	520	65
250	395	350	12-22	405	355	12-26	425	370	12-30	625	310	830	80	875	650	80
300	445	400	12-22	460	410	12-26	485	430	16-30	750	350	1000	100	1050	780	100
350	500	460	16-22	520	470	16-26	555	490	16-33	875	410	1180	125	1200	885	125
400	565	515	16-26	580	525	16-30	620	550	16-36	1000	470	1350	150	1400	1040	150
450	615	565	20-26	640	585	20-30	670	600	20-36	1150	510	1500	150	1500	1145	150
500	670	620	20-26	715	650	20-33	730	660	20-36	1250	550	1680	150	1700	1250	150
600	780	725	20-30	840	770	20-41	840	770	20-41	1500	650	2000	200	2000	1460	200