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First, the BQ41F insulation jacket ball valve features
BQ41F shrinkage insulation ball valve with insulation, cold insulation properties. According to GB design and manufacture of flange connection by 79-94 standard for the manufacture of petroleum, chemical, metallurgical, pharmaceutical industry.
BQ41F shrinking ball valve insulation as a result of steam jacket insulation. So even if the outside temperature drops below zero, the valve is still flexible operation to ensure that the pipeline can be disconnected, the advantage of the general control valve does not have. It is the ideal control valve for heavy oil pipelines.
According to user needs jacket injection steam, thermal oil, cooling water, air conditioning and so on. Use the entire valve temperature or temperature to reach the desired temperature. To prevent the media crystallization. BQ41F shrinking insulation ball valve products have good insulation cold and cold characteristics, with the pain of the valve diameter and diameter of the same, but can effectively reduce the pipeline heat loss of medium. Mainly used in petroleum, chemical, metallurgy, pharmaceuticals, food and other systems to transport medium viscosity will be solidified at room temperature.

Second, BQ41F insulation jacket ball valve main connection size (mm)

DN		Flange specifications	Size (mm)							Weight (Kg)
DN		Flange specifications	d	L	H	W	E	Q.	P	Weight (Kg)
inch	DN	150,300 Lb; 10K, 20K
1/2	15	15 * 40	15	110	101	130	58.5	147	NPT3 / 4	5
3/4	20	20 * 40	19	117	101	160	58.5	147	NPT3 / 4	6
1	25	25 * 50	25	127	106	160	63.5	156	NPT3 / 4	9
1 1/2	40	40 * 65	38	165	125	230	62.5	181	NPT3 / 4	15
2	50	50 * 80	51	178	135	230	68	218	NPT3 / 4	21
3	80	80 * 150	76	229	193	400	82	275	NPT3 / 4	38
4	100	100 * 200	102	254	265	700	83	300	NPT3 / 4	70
6	150	150 * 250	152	292	355	1100	95	403	NPT1	101
8	200	200 * 350	203	330	410	1100	100	492	NPT1	140

Third, the thermal insulation jacket ball valve parts list

Serial number	Part Name	Material
Serial number	Part Name	GB	ASTM
1	Jacket	25	105
2	Seat	WCB	A216-WCB
3	Body	25	A105
4	Sealing ring	PTFE, para-polystyrene
5	Sphere
6	Valve stem	1Cr13	A247-410
7	filler	Flexible graphite
8	Packing gland	WCB	A216-WCB

Note: the main components of the thermal jacket ball valve and the sealing surface of the material can be designed according to the actual conditions or user requirements.

Fourth, BQ41F shrinking ball valve type I main connection size

DN	L	D	D1	D2	B	F	Z-Φd	2-G
15	130	95	65	45	14	2	4-Φ14	3/8
20	150	105	75	55	14	2	4-Φ14	3/8
25	160	115	85	65	14	2	4-Φ14	3/8
32	165	135	100	78	16	2	4-Φ18	1/2
40	180	145	110	85	16	3	4-Φ18	1/2
50	200	160	125	100	16	3	4-Φ18	1/2
65	220	180	145	120	18	3	4-Φ18	1/2
80	250	195	160	135	20	3	4-Φ18	1/2
100	280	215	180	155	20	3	4-Φ18	1/2
125	320	280	240	210		3	4-Φ23	1/2
150	360	335	295	265	26	3	4-Φ23	1/2

Fifth, BQ41F diameter ball valve insulation type II main connection size

DN	L	D	D1	D2	B	F	Z-Φd	2-G
15	130	95	65	45	14	2	4-Φ14	3/8
20	150	105	75	55	14	2	4-Φ14	3/8
25	160	115	85	65	14	2	4-Φ14	3/8
32	165	135	100	78	16	2	4-Φ18	1/2
40	180	145	110	85	16	3	4-Φ18	1/2
50	200	160	125	100	16	3	4-Φ18	1/2
65	220	180	145	120	18	3	4-Φ18	1/2
80	250	195	160	135	20	3	4-Φ18	1/2
100	280	215	180	155	20	3	4-Φ18	1/2
125	320	280	240	210		3	4-Φ23	1/2
150	360	335	295	265	26	3	4-Φ23	1/2

The next：High temperature ball valve

The previous：Floating ball valve

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