Low temperature flange ball valve DQ41F

Cname：Gate Stop Valve Series
Date：2024-07-25 10:10:32

24-hour free hotline:15351513002

Detail

DQ41F low-temperature flange ball valve is divided into two types: low-temperature floating ball and low-temperature fixed ball. It is used to cut off or connect low-temperature media in pipelines, and the low temperature of the medium should not be lower than -196 degrees.
Low temperature ball valve execution standard

design and manufacturing	Structure length	Flange size	Pressure Temperature	Experiment Inspection
GB122237	GB12221	GB9113 JB79	GB9131	GB/T13927 JB/T9092

Low temperature ball valve pressure test

nominal pressure	1.6	2.5	4.0
strength test	2.4	3.8	6.0
Water seal test	1.8	2.8	4.4
Airtight seal test	0.4-0.7

Main component materials of low-temperature ball valve

valve body	WCB	ZG1Cr18Ni9Ti		CF8	CF3		ZG1Cr18Ni12Mo2Ti		CF8M	CF3M
Spherical valve stem	2Cr13	1Cr18Ni9Ti		304	304L		1Cr18Ni12Mo2Ti		316	316L
Valve seat	PTFE with slope fiber reinforced PTFE+Glass para polystyrene PPL
shim	PTFE stainless steel/flexible graphite toothed gasket
Valve stem seat	Polytetrafluoroethylene (PTFE) stainless steel/flexible graphite
filler	Polytetrafluoroethylene (PTFE) reinforced flexible graphite
Packing gland	WCB	1Cr18Ni9Ti		304	304L		1Cr18Ni12Mo2Ti		316	316L
temperature	-40～150
medium	Steam oil products		Nitric Acid			Strong oxidizing medium		Acetic acid		sulfonylureas

Low temperature flange ball valve manufacturer

Main external dimensions of low-temperature ball valve

1.6MPa	DN	L	D	D1	D2	b	n-φd	H	D0
凸面法兰RF DQ41 16C 16P 16R	15	130	95	65	45	14	4-14	78	140
	20	140	105	75	55	14	4-14	84	160
	25	150	115	85	65	14	4-14	95	180
	32	165	135	100	78	16	4-18	150	250
	40	180	145	110	85	16	4-18	150	300
	50	200	160	125	100	18	4-18	170	350
	65	220	180	145	120	20	4-18	195	350
	80	250	195	160	135	20	8-18	215	400
	100	280	215	180	155	20	8-18	250	500
	125	320	245	210	185	22	8-18	265	600
	150	360	280	240	210	24	8-23	270	800
	200	400	335	295	265	26	12-23	330	1200
2.5MPa	15	130	95	65	45	16	4-14	103	140
raised face flange RF DQ41 25 25P 25R	20	140	105	75	55	16	4-14	112	160
	25	150	115	85	65	16	4-14	123	180
	32	165	135	100	78	18	4-18	150	250
	40	180	145	110	85	18	4-18	156	300
	50	200	160	125	100	20	8-18	172	350
	65	220	180	145	120	22	8-18	197	350
	80	250	195	160	135	22	8-23	222	400
	100	280	230	190	160	24	8-23	253	500
	125	320	270	220	188	28	8-25	275	600
	150	360	300	250	218	30	8-25	286	800
	200	400	360	310	278	34	12-25	340	1200

4.0MPa	DN	L	D	D1	D2	D6	b	n-φd	H	D0
Concave convex flange MFM DQ41 40 40P 40R	15	130	95	65	45	40	16	4-14	103	140
	20	140	105	75	55	51	16	4-14	112	160
	25	150	115	85	65	58	16	4-14	123	160
	32	180	135	100	78	66	18	4-18	150	250
	40	200	145	110	85	76	18	4-18	156	250
	50	220	160	125	100	88	20	4-18	172	350
	65	250	180	145	120	110	22	8-18	197	350
	80	280	195	160	135	121	22	8-18	222	450
	100	320	230	190	160	150	24	8-23	253	450
	125	400	270	220	188	176	28	8-25	275	600
	150	400	300	250	218	204	30	8-25	286	800
	200	550	375	320	282	260	38	12-30	340	1200
6.4MPa	15	165	105	75	55	40	18	4-14	105	140
Concave convex flange MFM DQ41 64 64P 64R	20	190	125	90	68	51	20	4-18	125	160
	25	216	135	100	78	58	22	4-18	135	250
	32	229	150	110	82	66	24	4-23	150	350
	40	241	165	125	95	76	24	4-23	165	350
	50	292	175	135	105	88	26	4-23	175	450
	65	330	200	160	130	110	28	8-23	200	450
	80	356	210	170	140	121	30	8-23	210	600
	100	432	250	200	168	150	32	8-25	250	700
	125	508	295	240	202	176	36	8-30	295	1100
	150	559	340	280	240	204	38	8-34	340	1500

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Jiutong Group Co., Ltd

Low temperature flange ball valve DQ41F

Low temperature flange ball valve DQ41F

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