1. In the double-seat sealing design, the 3-way ball valve enjoys compact structure,goodly configuration and favorable sealing performance. The valve could make a realization the switching of flow direction of the medium inside the pipeline, furthermore, it also could connect or shut-down the two orthogonal passages.(As shown in Flow Graph A)
2.In the 4-seat sealing design, the 3-way ball valve enjoys reasonable, compact structure and goodly configuration. The valve could not only make a realization the switching of flow direction of the medium inside the pipeline, but also connect the 3 passages on another. Meanwhile, the valve also features the capacity of shutting-down one of the 3 passages while connecting the other 2 ones for the flexible control of the convergent flow or shunting of the medium in pipelines.(As shown in Flow Graph B)
主要零件材质Main Patrs and Materials
|材 质 Material |
||SS 304 |
Dual-head double-screw bolt
Double-seat configuration design is generally utilized for 3-way ball valve as shown in the 2 operating conditions in Flow Graph A which apply the L-Shaped construction with double-seat(Type Q44).With regard to the 2 conditions of ① and ④ in Flow Graph B, the T-shaped construction with double-seat could also be applied(Type Q45).In the ② and ③ conditions in this graph, the choice of the construction must be limited to T-shaped ones with 4-seat(Type Q45). For other kinds of operating conditions, the construction with 4-seat
could also be applied, however, the construction of the relevant valve seats should be referred in advance in the contract for future delivery. For other requirements please refer to the sample of Organizing Method for Types of Ball Valves and fill in corresponding code numbers as required.
主要性能规范 Main Performance Spcification
|试验压力 Test pressure |
High-pressure liquid sealing
Low-pressure hermetic sealing
Non-corrosion medium such as water, oil products,
and gas, etc,and nitric acid corrosion medium.
|JB79-59、GB9113、HG20592-97、ANSI B16.5 |
Test and inspection
|GB9/T 9092-99、API 598 |
Other manufacturing standard is according to the standard of our factory.
主要外型与连接尺寸表Form of Main Types and Connecting Dimension
|公称压力或压力级 Nominal pressure
||主要尺寸 Main dimension
|其余的法兰尺寸请参阅样本 <主要外型及连接尺寸表> |