GB floating ball valve
A valve is a mechanical device that controls the flow rate, flow direction, pressure, temperature, etc. of a flowing fluid medium. Valves are the basic components in piping systems. Valve fittings, like pumps in technology, are often discussed as a separate category.
Key words:
Classification:
Stainless steel valve series
Description
A valve is a mechanical device that controls the flow rate, flow direction, pressure, temperature, etc. of a flowing fluid medium. Valves are the basic components in piping systems. Valve fittings, like pumps in technology, are often discussed as a separate category. The valve may be operated manually or with a hand wheel, handle or pedal, and may also be controlled to vary the pressure, temperature and flow rate of the fluid medium. The valve can perform continuous or repeated operations on these changes, such as safety valves installed in hot water systems or steam boilers. In more complex control systems, automatic control valves are used as required by external inputs (I. e., to adjust the changing set point of the flow through the pipeline). The automatic control valve does not need to be manually operated according to its input and setting, so that the valve can accurately control the various requirements of the fluid medium. Valves can also be divided into cast iron valves, cast steel valves, stainless steel valves, chromium molybdenum steel valves, chromium molybdenum vanadium steel valves, dual phase steel valves, plastic valves, non-standard customized valve materials, etc.
◆ Product use
The national standard floating ball valve is mainly used to cut off or connect the medium in the pipeline, and can also be used for the regulation and control of the fluid, which can no longer be used for the use of the cut-off valve after adjustment. Choose different materials, can be applied to water, steam, oil, liquefied gas, natural gas, coal gas, nitric acid, acetic acid, urea and other media, but also suitable for poor working conditions such as oxygen, hydrogen peroxide, methane and ethylene. According to the working conditions, can be equipped with electric actuator Q941 electric ball valve and pneumatic actuator Q641 pneumatic ball valve.
◆Product features
1, the fluid resistance is small, the ball valve is a small fluid resistance in all valves, even if the ball valve, the fluid resistance is quite small.
2. The switch is quick and convenient. As long as the valve stem rotates 90 °, the ball valve completes the fully open or fully closed action, and it is easy to realize the rapid opening and closing.
3. Good sealing performance. Ball valve seat seals are generally made of elastic materials such as PTFE, which is easy to ensure sealing, and the sealing force of the ball valve increases with the increase of medium pressure.
4. The valve stem is sealed and reliable. Valve opening and closing of the valve stem only for rotation, so the valve stem packing seal is not easy to be destroyed, and the valve stem sealing force increases with the increase of medium pressure.
5. The ball valve channel is flat and smooth, not easy to deposit medium, and can pass the ball through the pipeline,
◆ Main performance specifications
| Performance Specification | Nominal pressure (MPa) | |||||
| 1.6 | 2.5 | 4.0 | 6.4 | 10.0 | ||
| Test pressure (MPa) |
Strength test | 2.4 | 3.75 | 6.0 | 9.6 | 15.0 |
| Sealing test | 1.76 | 2.75 | 4.4 | 7.04 | 11.0 | |
| Pneumatic test | 0.6 MPa | |||||
| Applicable temperature | -196 ℃ ~ 550 ℃ (Note: Different materials shall be selected for different working conditions) | |||||
| Applicable media | Ordinary type | Water, steam, petroleum, liquefied petroleum gas, natural gas, etc. | ||||
| Sulfur-resistant type | Natural gas, oil, etc. containing H₂ S, CO | |||||
◆ Executive standards
| Design Specification | GB/T 12237-2007 |
| Structure length | GB/T 12221-2005 |
| Connecting flange | JB/T 79-2015、GB/T 9113-2010 |
| TEST AND INSPECTION | GB/T 13927-2008 |
| Pressure-Temperature | GB/T 12224 |
◆ Material of main parts
| Part Name | Stainless Steel Series | Low temperature steel series | Sulfur resistant series |
| Stainless Steel Series | |||
| Valve body, bonnet | CF8、CF8M、CF3、CF3M | LCB、LCC | CF8M |
| Valve seat | PTFE, RPTFE, sintered carbon fiber, metal rubber components | ||
| Sphere | F304、F316、F304L、F316L | LF1、LF2、LF ENP | F316 |
| Spring | INCONEL 750 | ||
| Stud | A193 B8、B8M | A320L7 | A193 B8M |
| Gasket | Flexible graphite stainless steel | ||
| Nut | A1948M | A1944 | A1948M |
| Stem | A182F304、316、304L、316L | A182F6a | A182F316 |
| Bushing | Metal lined PTFE; Sintered carbon fiber | ||
| Packing pad | A182 F6a | ||
| Packing | Flexible graphite, PTFE | ||
| Packing gland | CF8、CF8M | CF8 | CF8M |
| Screw | A193 B8、B8M | A320L7 | A193 B8M |
| Positioning piece | GB/T 700 Q235A Zn(Cr) | ||
| Retaining ring | GB/T 1222 65Mn | ||
| Handle | A216 WCB | ||
◆ Main outline connection dimension
| Nominal pressure PN | Nominal diameter DN | Q41F-16/25C | |||||||
| L | D | D1 | D2 | b | Z-fd | H | W | ||
| PN1.6MPa | 15 | 130 | 95 | 65 | 45 | 14 | 4-F14 | 78 | 130 |
| 20 | 140/130 | 105 | 75 | 55 | 14 | 4-F14 | 84 | 130 | |
| 25 | 150/140 | 115 | 85 | 65 | 14 | 4-F14 | 95 | 160 | |
| 32 | 165 | 135/140 | 100 | 78 | 16 | 4-F18 | 150 | 160 | |
| 40 | 180/165 | 145/150 | 110 | 85 | 16 | 4-F18 | 150 | 180 | |
| 50 | 200/203 | 160/165 | 125 | 100 | 16 | 4-F18 | 170 | 200 | |
| 65 | 222/220 | 180/185 | 145 | 120 | 18 | 4-F18 | 195 | 240 | |
| 80 | 250/241 | 195/200 | 160 | 135 | 20 | 8-F18 | 215 | 240 | |
| 100 | 280/305 | 215/220 | 180 | 155 | 20 | 8-F18 | 250 | 280 | |
| 125 | 320/356 | 245/250 | 210 | 185 | 22 | 8-F18 | 265 | 300 | |
| 150 | 360/394 | 280/285 | 240 | 210 | 24 | 8-F23 | 270 | 300 | |
| 200 | 400/457 | 335/340 | 295 | 265 | 26 | 12-F23 | 330 | 350 | |
| PN2.5MPa | 15 | 130 | 95 | 65 | 45 | 16 | 4-F14 | 103 | 130 |
| 20 | 140/130 | 105 | 75 | 55 | 16 | 4-F14 | 112 | 130 | |
| 25 | 150/140 | 115 | 85 | 65 | 16 | 4-F14 | 123 | 160 | |
| 32 | 165 | 135/140 | 100 | 78 | 18 | 4-F18 | 150 | 160 | |
| 40 | 180/165 | 145/150 | 110 | 85 | 18 | 4-F18 | 156 | 180 | |
| 50 | 200/203 | 160/165 | 125 | 100 | 20 | 4-F18 | 172 | 200 | |
| 65 | 222/220 | 180/185 | 145 | 120 | 22 | 8-F18 | 197 | 240 | |
| 80 | 250/241 | 195/200 | 160 | 135 | 22 | 8-F18 | 222 | 240 | |
| 100 | 280/305 | 230/235 | 190 | 160 | 24 | 8-F23 | 253 | 280 | |
| 125 | 320/356 | 270 | 220 | 188 | 28 | 8-F25 | 275 | 300 | |
| 150 | 360/394 | 300 | 250 | 218 | 30 | 8-F25 | 286 | 300 | |
| 200 | 400/457 | 360 | 310 | 278 | 34 | 12-F25 | 360 | 350 | |
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