原理 通過柱塞的往復運動直接將工作介質（黃色）吸入和排出。由于柱塞和密封都接觸介質的情況下，選擇合適的柱塞材質和密封形式可保證泵在運轉過程中具有理想的性能。
柱塞泵頭結構簡單、經濟、計量精度高，需要選擇和維護好密封。柱塞和密封之間橫向自動對中確保二者之間磨損小。 柱塞材質有不銹鋼、氧化陶瓷，氧化陶瓷具有耐腐蝕和硬度高耐磨的特點。 主要性能參數 單頭zui大流量：50000升/小時
zui高排出壓力：50MPa
穩態精度±1%
介質粘度：0-800mm2/s
輸送介質溫度可達450oC以上
SJ2型柱塞計量泵性能參數 | 型號
Type | 流量
L/h | zui高排壓MPa | 入出管聯接 | 電機
0.37kW | 電機
0.55kW | 電機
0.75kW | SJ2-1.2/20 | 1.2 |
| 20 |
| Φ14(外徑)x3管 | SJ2-2/20 | 2 |
| 20 |
| Φ14(外徑)x3管 | SJ2-3.2/20 | 3.2 |
| 20 |
| Φ14(外徑)x3管 | SJ2-5/16 | 5 | 16 | 16 |
| Φ14(外徑)x3管 | SJ2-6.3/40(16) | 6.3 | 16 | 40 |
| Φ14(外徑)x3管 | SJ2-8/32(12.5) | 8 | 12.5 |
| 32 | Φ14(外徑)x3管 | SJ2-9/10 | 9 | 10 |
|
| Φ14(外徑)x3管 | SJ2-10/25(10) | 10 | 10 | 25 |
| Φ14(外徑)x3管 | SJ2-13/20(8) | 13 | 8 |
| 20 | Φ14(外徑)x3管 | SJ2-15/6.3 | 15 | 6.3 |
|
| Φ14(外徑)x3管 | SJ2-18/16(6.3) | 16 | 6.3 | 16 |
| Φ14(外徑)x3管 | SJ2-22/12.5(5) | 12.5 | 5 |
| 12.5 | Φ14(外徑)x3管 | SJ2-32/10(4) | 32 | 4 | 10 |
| Φ14(外徑)x3管 | SJ2-40/8(3.2) | 40 | 3.2 |
| 8 | Φ14(外徑)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型柱塞計量泵安裝圖 
SJ2型柱塞計量泵安裝尺寸 | 型號 | A | B | C | SJ2-1.2/20 | 118 | 74 | 12(外徑)x3管 | SJ2-2/20 | 124 | 74 | 12(外徑)x3管 | SJ2-3.2/20 | 124 | 93 | 12(外徑)x3管 | SJ2-5/16 | 165 | 81 | 12(外徑)x3管 | SJ2-6.3/40(16) | 124 | 74 | 12(外徑)x3管 | SJ2-8/32(12.5) | 124 | 74 | 12(外徑)x3管 | SJ2-9/10 | 124 | 93 | 12(外徑)x3管 | SJ2-10/25(10) | 124 | 93 | 12(外徑)x3管 | SJ2-13/20(8) | 124 | 93 | 12(外徑)x3管 | SJ2-15/6.3 | 124 | 93 | 14(外徑)x3管 | SJ2-18/16(6.3) | 165 | 81 | 14(外徑)x3管 | SJ2-22/12.5(5) | 165 | 81 | 14(外徑)x3管 | SJ2-32/10(4) | 165 | 81 | 14(外徑)x3管 | SJ2-40/8(3.2) | 165 | 81 | 14(外徑)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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