Product Structure Features

Flat gate valve with diversion hole has two kinds of structures, soild gate and expandng split gate. On the gate there is a through hole which is the same size as body passage. When the valve is opened, the diversion hole on the gate constitutes a through conduit to the body bore, easy for medium to flow and pigs to clean,prevent medum depositing which affects conveying capacity of the pipelines.

Adopt standard

design specification	Structure length	Connecting flange	Test and Inspection	Pressure-temperature	Product Identification
JB/T5298	JB/T5298	JB/79	JB/T5298	GB9131	GB/T12220
API6D	API6D	ANSI-16.5	API6D	ANSI B16.34	MSS SP-25

Performance Specifications

Design grade		Test pressure at room temperature（MPa）				Proper temperature℃			Applicable media
		case	left seal	left seal	low pressure seal	Type“G”	Type "D"	normal type	"Sulfur Resistant" Type	"Basic"
PN（MPa）	1.6	2.4	1.76	1.76	0.6	-29～50	-45～21	-2～121	Media with total content of H2S and CO2 greater than 500mg/m2	Oil and gas, water, etc.
	2.5	3.75	2.75	2.75	0.6
	4.0	6.0	4.4	4.4	0.6
	6.4	9.6	7.04	7.04	0.6
Pound class Lb	150	3.0	2.2	2.2	0.6
	300	7.7	5.6	5.6	0.6

Material of main parts

Valve/bonnet	WCB	WC6	A352-LCB	A351-CF8M
Gate	2Cr13+ENP	20CrMoV+STL	ANSO410+ENP	ANSI316+ENP
Stem	2Cr13	2Cr13	A182-A6a	A182-A316S
Seat	25+PTFE	20CrMoV+STL	A105+PTFE	A182-F316+PTFE
Filler	NBR/FPM	Flexible graphite/Flexible Graphite		Teflon/PTFE+FPM

Gasket	-
Bolt	35	35CrMo	A193-B7M	A193-B8
Applicable media	Water, oil, steam	steam, oil	Propane, Ethylene	Nitric acid

Outline structure diagram

Outline structure diagram

1.6MPa	DN	L	D	D1	D2	Do	f	b	H	H1	n-Φd
RF	50	178	160	125	100	250	3	16	584	80	4-Φ18
	65	190	180	145	120	250	3	18	634	95	4-Φ18
	80	203	195	160	135	250	3	20	688	100	8-Φ18
	100	229	215	181	155	300	3	20	863	114	8-Φ18
	125	254	245	210	185	350	3	22	940	132	8-Φ18
	150	267	280	240	210	350	3	24	1030	150	8-Φ23
	200	292	335	295	265	350	3	26	1277	168	12-Φ23
	250	330	405	355	320	400	3	30	1491	203	12-Φ25
	300	356	460	410	375	450	4	30	1701	237	12-Φ25
	350	381	520	470	435	500	4	34	1875	265	16-Φ30
	400	406	580	525	485	305	4	36	2180	300	16-Φ30
	450	432	640	585	545	305	4	40	2440	325	20-Φ34
	500	457	705	650	608	305	4	44	2860	360	20-Φ41
	600	508	840	770	718	305	5	48	3450	425	20-Φ41
	700	610	910	840	788	305	5	50	3960	460	24-Φ41
	800	660	1020	950	898	305	5	52	4550	512	24-Φ41
	900	711	1120	1050	998	250	5	54	5250	565	28-Φ48
	1000	811	1250	1170	1110	250	5	56	5870	630	28-Φ18
2.5MPa	50	178	160	125	100	250	3	20	584	80	4-Φ18
RF	65	190	180	145	120	300	3	22	634	95	8-Φ18
	80	203	195	160	135	350	3	22,	388	100	8-Φ18
	100	229	230	190	160	350	3	24	863	114	8-Φ23
	125	254	270	220	188,	350	3	28	940	132	8-Φ25
	150	267	300	250	218	400	3	30	1030	150	8-Φ25
	200	292	360	310	278	450	3	34	1277	168	12-Φ25
	250	330	425	370	332	500	3	36	1491	203	12-Φ30
	300	356	485	430	390	305	4	40	1701	237	16-Φ30
	350	381	550	490	448	305	4	44	1875	265	16-Φ34
	400	406	610	550	505	305	4	48	2180	300	16-Φ34
	450	432	660	600	555	305	4	50	2440	325	20-Φ34
	500	457	730	660	610	305	4	52	2860	360	20-Φ41
	600	508	840	770	718	305	5	56	3450	425	20-Φ41
	700	610	955	875	815	305	5	60	3960	460	24-Φ48
	800	660	1070	990	930	305	5	64	4550	512	24-Φ48
	900	711	1180	1090	1025	-	5	66	5250	595	28-Φ54
	1000	811	1305	1210	1140	-	5	68	5870	660	28-Φ48