Unitary Pneumatic High Temperature Ball Valve
manufacturer: Shanghai MeiYan Yi Pump & Valve Co., Ltd.
Eml: sales@1bengfa.com
Tel: +86 (21) 5640 2009
Mob: +86 138 1691 3072（WeChat Same Account）
product drawing
Q641 pneumatic unitary high temperature ball valves
Structural features and active principle
The ball and the sealing ring of this type ball valve, use special processing technology and the latest sealing material, to make the ball surface roughness and roundness achieve the standard requirement. Thereby enhancing the sealing performance and service life, high temperature resistance capability. Clockwise moving the handle to promote stem-driven ball rotation, so that the media passs smoothly.
Structure
Q641 pneumatic unitary high temperature ball valve structural diagram
| model | specification | dimensions | ||||||
| L | D | D 1 | D 2 | z-φd | H | b | ||
| QQ641PPL -16 | 15 | 115 | 95 | 65 | 45 | 4-14 | 85 | 14 |
| 20 | 130 | 105 | 75 | 55 | 4-14 | 95 | 16 | |
| 25 | 140 | 115 | 85 | 65 | 4-14 | 103 | 16 | |
| 32 | 165 | 135 | 100 | 78 | 4-18 | 105 | 18 | |
| 40 | 180 | 145 | 110 | 85 | 4-18 | 120 | 18 | |
| 50 | 200 | 160 | 125 | 100 | 4-18 | 195 | 20 | |
| 65 | 220 | 180 | 145 | 120 | 4-18 | 195 | 20 | |
| 80 | 250 | 195 | 160 | 135 | 8-18 | 215 | 22 | |
| 100 | 280 | 215 | 180 | 155 | 8-18 | 255 | 24 | |
Technical parameter
| model | nominal pressure(MPa) | intensity test pressure (MPa) | sealing test pressure (MPa) | suitable temperature (℃) | applicable medium |
| QQ641M/F -16C | 1.6 | 2.4 | 1.8 | -28～+300 (M/F) | Heat-conducting oil, water, steam, gas, oil, nitric acid corrosive medium, acetic acid corrosive media |
| QQ641M/F -25C | 2.5 | 4.0 | 2.8 | -28～+350 (PPN) |
The materials of main parts
| No. | part name | material |
| 1 | body | ductile iron, carbon steel, cast stainless steel |
| 2 | sealing ring | (M/F) high strength waer-resistant carbon graphite≤300℃ (PPN) PPL, temperature≤350℃ |
| 3 | ball | stainless steel |
| 4 | packing | PTFE |
| 5 | packing gland | QT450－10 ductile cast iron |
| 6 | stem | carbon steel, Cr stainless steel |
| 7 | handle | carbon steel |
