Necking insulation ball valve 
 ? Product Name: necking insulation ball valve 
 ? Model: BQ41F 
 ? Nominal diameter: DN15-DN150 
 ? Medium: 
 ? Pressure range: 1.6mpa-4.0mpa 
 ? Temperature: 
 ? Body material: steel, stainless steel 
 Necking characteristics of thermal insulation ball valve 
 The series valves with heat, cold features. Designed and manufactured according to GB standard flange manufactured by 79-94 for the petroleum, chemical, metallurgy, pharmaceutical industry. 
 As a result of the steam valve insulation jacket. Therefore, even if the outside temperature is below freezing, the valve is still operational flexibility to ensure that the pipeline can be disconnected, the advantage of general control valve does not have. It is ideal for heavy oil pipeline control valves. 
 Jacketed steam injection according to user needs, oil, cooling water, air conditioning. Use warm or cool the entire valve length to achieve the desired temperature. Media to prevent crystallization. 
 Size of type I primary connection 
 Nominal diameter 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 22 3 4-Φ23 1 / 2 
 150 360 335 295 265 26 3 4-Φ23 1 / 2 
 Π-type main connection size 
 Nominal diameter 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 22 3 4-Φ23 1 / 2 
 150 360 335 295 265 26 3 4-Φ23 1 / 2 





 Necking insulation ball valve technical specifications: 
 Design standard ASME B 16.34 GB / T 12224 
 Structure length ASME B 16.10 GB / T 12221 
 Flange ASME B 16.34 JB / T 79 
 Drive manual, electric, pneumatic 
 Testing and inspection JB/T9092 API 598 
 Medium heavy oil, rubber etc. easily solidified media 
 No. Part Name Material 
 GB ASTM 
 1 Jacket 25105 
 2 seat WCB A216-WCB 
 3 valve 25 A105 
 4 ring PTFE, polystyrene alignment 
 5 ball 
 6 Stem 1Cr13 A247-410 
 7 Packing Flexible Graphite 
 8 Gland WCB A216-WCB 
 Note: necking insulation ball valve sealing surface of the main components and materials according to actual working conditions or the special requirements of the design selection