這種防護罩的結構是將兩根鐵條做成橋拱型,然后將鋼絲網焊接在上面,這種結構是全可見型,聯軸器運轉的情況盡收眼底,視野非常好,這種結構用得很多;封閉式純鐵皮型,這種防護罩做出來后,幾乎全部將聯軸器蓋住,看不到里面,由純鐵皮制造,沒有鐵條骨架支撐。因為是全封閉式的,所以查看聯軸器是不方便的,這種結構只適合用在微型的水泵上,他們的聯軸器跑偏的機率小,并且對聯軸器同心度要求沒有那么高;圓柱形獨立防護罩,這中防護罩安裝不是固定在基礎上,他是通過特殊的結構直接固定在聯軸器邊上;柴油機水泵防護罩,這種結構是圓形的,純鐵皮制造,是通過均布的螺栓固定在柴油機上,適用在用柴油機帶動的水泵,并且是直聯式的結構;
皮帶輪并聯式防護罩,當水泵與電機或柴油機的連接是通過皮帶輪連接時,做防護罩就需要根據皮帶的走向和距離定做,這種防護罩做功為復雜,耗材也多;鐵條加鐵皮可打開是防護罩,這種防護罩下面是四跟鐵條固定在底座上,上面是鐵皮橋拱型護罩,一邊用荷葉連接,
| 型號 參數 | 流量 Capacity | 揚程 Heed | 轉速 Speed | 軸功率 Shaft power | 配帶電動機 Motor | 效率 Eff. | 必須汽蝕余量 | 泵口徑 | 泵重 | |||
| Q | H | n | Pa | 功率 | 型號 Type | η | (NPSH)r | 進口 | 出口 | |||
| m3/h | L/s | m | r/min | kw | kw | % | m | mm | mm | kg | ||
| D.DF.DY.MD120-50*2 | 96 | 26.7 | 110 | 2950 | 39.44 | 55 | Y250M-2 | 73.00 | 3.2 | 125 | 125 | 312 |
| 120 | 33.3 | 100 | 44.54 | 73.30 | 5.1 | |||||||
| 140 | 38.9 | 84.6 | 48.80 | 67.50 | 6.7 | |||||||
| D.DF.DY.MD120-50*3 | 96 | 26.7 | 165 | 2950 | 59.09 | 90 | Y280M-2 | 73.00 | 3.2 | 125 | 125 | 377 |
| 120 | 33.3 | 150 | 66.88 | 73.30 | 5.1 | |||||||
| 140 | 38.9 | 126.9 | 71.68 | 67.50 | 6.7 | |||||||
| D.DF.DY.MD120-50*4 | 96 | 26.7 | 220 | 2950 | 78.79 | 110 | Y315S-2 | 73.00 | 3.2 | 125 | 125 | 442 |
| 120 | 33.3 | 200 | 89.17 | 73.30 | 5.1 | |||||||
| 140 | 38.9 | 169.2 | 95.57 | 67.50 | 6.7 | |||||||
| D.DF.DY.MD120-50*5 | 96 | 26.7 | 275 | 2950 | 98.49 | 132 | Y315M-2 | 73.00 | 3.2 | 125 | 125 | 507 |
| 120 | 33.3 | 250 | 111.46 | 73.30 | 5.1 | |||||||
| 140 | 38.9 | 211.5 | 119.46 | 67.50 | 6.7 | |||||||
| D.DF.DY.MD120-50*6 | 96 | 26.7 | 330 | 2950 | 118.18 | 160 | Y315L1-2 | 73.00 | 3.2 | 125 | 125 | 572 |
| 120 | 33.3 | 300 | 133.75 | 73.30 | 5.1 | |||||||
| 140 | 38.9 | 253.8 | 143.36 | 67.50 | 6.7 | |||||||
| D.DF.DY.MD120-50*7 | 96 | 26.7 | 385 | 2950 | 137.88 | 200 | Y315L2-2 | 73.00 | 3.2 | 125 | 125 | 637 |
| 120 | 33.3 | 350 | 156.04 | 73.30 | 5.1 | |||||||
| 140 | 38.9 | 296.1 | 167.25 | 67.50 | 6.7 | |||||||
| D.DF.DY.MD120-50*8 | 96 | 26.7 | 440 | 2950 | 157.58 | 200 | Y315L2-2 | 73.00 | 3.2 | 125 | 125 | 702 |
| 120 | 33.3 | 400 | 178.33 | 73.30 | 5.1 | |||||||
| 140 | 38.9 | 338.4 | 191.14 | 67.50 | 6.7 | |||||||
| D.DF.DY.MD120-50*9 | 96 | 26.7 | 495 | 2950 | 177.28 | 220 | Y355M1-2 | 73.00 | 3.2 | 125 | 125 | 767 |
| 120 | 33.3 | 450 | 200.63 | 73.30 | 5.1 | |||||||
| 140 | 38.9 | 380.7 | 215.03 | 67.50 | 6.7 | |||||||
| D.DF.DY.MD120-50*10 | 96 | 26.7 | 550 | 2950 | 196.97 | 280 | Y355L1-2 | 73.00 | 3.2 | 125 | 125 | 832 |
| 120 | 33.3 | 500 | 222.92 | 73.30 | 5.1 | |||||||
| 140 | 38.9 | 423 | 238.93 | 67.50 | 6.7 | |||||||
| D.DF.DY.MD120-50*11 | 96 | 26.7 | 605 | 2950 | 216.67 | 280 | Y355L1-2 | 73.00 | 3.2 | 125 | 125 | 897 |
| 120 | 33.3 | 550 | 245.21 | 73.30 | 5.1 | |||||||
| 140 | 38.9 | 465.3 | 262.82 | 67.50 | 6.7 | |||||||
| D.DF.DY.MD120-50*12 | 96 | 26.7 | 660 | 2950 | 236.37 | 280 | Y355L2-2 | 73.00 | 3.2 | 125 | 125 | 962 |
| 120 | 33.3 | 600 | 267.50 | 73.30 | 5.1 | |||||||
| 140 | 38.9 | 507.6 | 287.71 | 67.50 | 6.7 | |||||||