Steel flange stop valve

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Steel flange stop valve

Standard

Design and production	Length of structure	Flange size	Pressure-Temperature	Experiment-test
GB12235	GB12221	GB9113 JB79	GB9131	JB/T9092

Pressure test

Nominal pressure	1.6	2.5	4.0	6.4	10.0	16.0
Strength test	2.4	3.8	6.0	9.6	15.0	24.0
Seal test	1.8	2.8	4.4	7.04	11.0	18.0
Upper Seal Test	1.8	2.8	4.4	7.04	11.0	18.0
Gas seal test	0.4-0.7

Materials and performance

Body	valve handle	sealing surface	spacer (ring)	packing	Operating temperature ℃	Medium
WCB	1Cr13	13Cr STL body material PTFE Nylon	Reinforced Flexible Graphite 1Cr13/ Flexible Graphite 08 soft steel 0Cr18Ni9Ti 0Cr18Ni12Mo2Ti XS550F(T) PTFE	Flexible Graphite Reinforced Flexible Graphite SFB/260 SFP/260 PTFE	≤425	water Steam oil
WC1					≤450
WC6	38CrMoAl				≤540
WC9	25Cr2MoV				≤570
ZGCr5Mo					≤540
ZG1Cr18Ni9Ti	1Cr18Ni9Ti				≤200	Nitric acid
ZG1Cr18Ni12Mo2Ti	1C18Ni12Mo2Ti				≤200	acetic acid

Steel flange stop valve

Size and connection size

1.6MPa	DN	L	D	D1	D2	b	N-φd	H	D0
J41H J41Y J41W J41F J41N 16C 16P 16R 161	10	130	90	60	40	14	4-φ14	198	120
	15	130	95	65	45	14	4-φ14	218	120
	20	150	105	75	55	14	4-φ14	258	140
	25	160	115	85	65	14	4-φ14	275	140
	32	180	135	100	78	16	4-φ18	280	160
	40	200	145	110	85	16	4-φ18	330	180
	50	230	160	125	100	16	4-φ18	350	200
	65	290	180	145	120	18	4-φ18	370	280
	80	310	195	160	135	20	8-φ18	400	280
	100	350	215	180	155	20	8-φ18	415	320
	125	400	245	210	185	22	8-φ18	460	360
	150	480	280	240	210	24	8-φ23	510	450
	200	600	335	295	265	26	12-φ23	710	500
	250	650	405	355	320	30	12-φ25	786	550
	300	750	460	410	375	30	12-φ25	925	600

Steel flange stop valve

Size and connection size

2.5MPa	DN	L	D	D1	D2	b	N-φd	H	D0
J41H J41Y J41W J41F J41N 25 25P 25R 251	10	130	90	60	40	16	4-φ14	198	120
	15	130	95	65	45	16	4-φ14	218	120
	20	150	105	75	55	16	4-φ14	258	140
	25	160	115	85	65	16	4-φ14	275	140
	32	180	135	100	78	18	4-φ18	280	160
	40	200	145	110	85	18	4-φ18	330	180
	50	230	160	125	100	20	4-φ18	350	200
	65	290	180	145	120	22	8-φ18	400	280
	80	310	195	160	135	22	8-φ18	355	280
	100	350	230	190	160	24	8-φ23	415	320
	125	400	270	220	188	28	8-φ25	460	360
	150	480	300	250	218	30	8-φ25	510	450
	200	600	360	310	278	34	12-φ25	710	500
	250	650	425	370	332	36	12-φ30	786	550
	300	750	485	430	390	40	16-φ30	925	600

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