原理 通过柱塞的往复运动直接将工作介质（黄色）吸入和排出。由于柱塞和密封都接触介质的情况下，选择合适的柱塞材质和密封形式可保证泵在运转过程中具有理想的性能。
柱塞泵头结构简单、经济、计量精度高，需要选择和维护好密封。柱塞和密封之间横向自动对中确保二者之间磨损小。 柱塞材质有不锈钢、氧化陶瓷，氧化陶瓷具有耐腐蚀和硬度高耐磨的特点。 主要性能参数 单头zui大流量：50000升/小时
zui高排出压力：50MPa
稳态精度±1%
介质粘度：0-800mm2/s
输送介质温度可达450oC以上
SJ2型柱塞计量泵性能参数 | 型号
Type | 流量
L/h | zui高排压MPa | 入出管联接 | 电机
0.37kW | 电机
0.55kW | 电机
0.75kW | SJ2-1.2/20 | 1.2 |
| 20 |
| Φ14(外径)x3管 | SJ2-2/20 | 2 |
| 20 |
| Φ14(外径)x3管 | SJ2-3.2/20 | 3.2 |
| 20 |
| Φ14(外径)x3管 | SJ2-5/16 | 5 | 16 | 16 |
| Φ14(外径)x3管 | SJ2-6.3/40(16) | 6.3 | 16 | 40 |
| Φ14(外径)x3管 | SJ2-8/32(12.5) | 8 | 12.5 |
| 32 | Φ14(外径)x3管 | SJ2-9/10 | 9 | 10 |
|
| Φ14(外径)x3管 | SJ2-10/25(10) | 10 | 10 | 25 |
| Φ14(外径)x3管 | SJ2-13/20(8) | 13 | 8 |
| 20 | Φ14(外径)x3管 | SJ2-15/6.3 | 15 | 6.3 |
|
| Φ14(外径)x3管 | SJ2-18/16(6.3) | 16 | 6.3 | 16 |
| Φ14(外径)x3管 | SJ2-22/12.5(5) | 12.5 | 5 |
| 12.5 | Φ14(外径)x3管 | SJ2-32/10(4) | 32 | 4 | 10 |
| Φ14(外径)x3管 | SJ2-40/8(3.2) | 40 | 3.2 |
| 8 | Φ14(外径)x3管 | SJ2-50/6.3(2.5) | 50 | 2.5 | 6.3 |
| GB/T9114 DN15PN50RF(NPT) | SJ2-63/5(2) | 63 | 2 |
| 5 | GB/T9114 DN15PN50RF(NPT) | SJ2-80/4(1.6) | 80 | 1.6 | 4 |
| GB/T9114 DN15PN50RF(NPT) | SJ2-100/3.2(1.25) | 100 | 1.25 |
| 3.2 | GB/T9114 DN15PN50RF(NPT) | SJ2-125/2.5(1) | 125 | 1 | 2.5 |
| GB/T9114 DN15PN50RF(NPT) | SJ2-160/2(0.8) | 160 | 0.8 |
| 2 | GB/T9114 DN15PN50RF(NPT) | SJ2-200/1.6(0.63) | 200 | 0.63 | 1.6 |
| GB/T9114 DN15PN50RF(NPT) | SJ2-250/1.3 | 250 |
|
| 1.3 | GB/T9114 DN15PN50RF(NPT) | SJ2-320/1 | 320 |
| 1 |
| GB/T9114 DN20PN40RF(Rp) | SJ2-400/0.8 | 400 |
| 0.8 |
| GB/T9114 DN20PN40RF(Rp) | SJ2-500/0.63 | 500 |
| 0.63 |
| GB/T9114 DN20PN40RF(Rp) | SJ2-630/0.5 | 630 |
|
|
| GB/T9114 DN20PN40RF(Rp) | SJ2-800/0.4 | 800 |
|
| 0.5 | GB/T9114 DN20PN40RF(Rp) | SJ2-1000/0.4 | 1000 |
| 0.32 | 0.4 | GB/T9114 DN20PN40RF(Rp) |
SJ2型柱塞计量泵安装图 
SJ2型柱塞计量泵安装尺寸 | 型号 | A | B | C | SJ2-1.2/20 | 118 | 74 | 12(外径)x3管 | SJ2-2/20 | 124 | 74 | 12(外径)x3管 | SJ2-3.2/20 | 124 | 93 | 12(外径)x3管 | SJ2-5/16 | 165 | 81 | 12(外径)x3管 | SJ2-6.3/40(16) | 124 | 74 | 12(外径)x3管 | SJ2-8/32(12.5) | 124 | 74 | 12(外径)x3管 | SJ2-9/10 | 124 | 93 | 12(外径)x3管 | SJ2-10/25(10) | 124 | 93 | 12(外径)x3管 | SJ2-13/20(8) | 124 | 93 | 12(外径)x3管 | SJ2-15/6.3 | 124 | 93 | 14(外径)x3管 | SJ2-18/16(6.3) | 165 | 81 | 14(外径)x3管 | SJ2-22/12.5(5) | 165 | 81 | 14(外径)x3管 | SJ2-32/10(4) | 165 | 81 | 14(外径)x3管 | SJ2-40/8(3.2) | 165 | 81 | 14(外径)x3管 | SJ2-50/6.3(2.5) | 149 | 87 | DN15PN50RF(NPT) | SJ2-63/5(2) | 149 | 87 | DN15PN50RF(NPT) | SJ2-80/4(1.6) | 123 | 84 | DN15PN40RF(Rp) | SJ2-100/3.2(1.25) | 123 | 84 | DN15PN40RF(Rp) | SJ2-125/2.5(1) | 137 | 82 | DN15PN40RF(Rp) | SJ2-160/2(0.8) | 137 | 82 | DN15PN40RF(Rp) | SJ2-200/1.6(0.63) | 144 | 86 | DN15PN40RF(Rp) | SJ2-250/1.3 | 144 | 86 | DN15PN40RF(Rp) | SJ2-320/1 | 161 | 103 | DN20PN40RF(Rp) | SJ2-400/0.8 | 161 | 103 | DN20PN40RF(Rp) | SJ2-500/0.63 | 186 | 103 | DN25PN40RF(Rp) | SJ2-630/0.5 | 186 | 103 | DN25PN40RF(Rp) | SJ2-800/0.4 | 207 | 110 | DN25PN40RF(Rp) | SJ2-1000/0.4 | 207 | 110 | DN25PN40RF(Rp) |
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