弹簧微启式安全阀
一、概述:A27H型弹簧微启式安全阀适用于工作温度≤200℃的水、空气、蒸气等介质的设备或管路上。
A27Y-P、A27Y-R型弹簧微启式安全阀适用于工作温度≤200℃有腐蚀性介质的设备或管路上,作为超压保护装置。
二、主要零部件材料Materials for main parts
NO. | 零件名称 Name of part | A27H 材料Materials | A27W-P 材料 Materials | A27W-R 材料 Materials |
1 | 阀体Body | HT350 | ZG0Cr18Ni9 | ZG0Cr17Ni12Mo2 |
2 | 阀座Nozzle | 35 | ZG0Cr18Ni9 | ZG0Cr17Ni12Mo2 |
3 | 调节圈 Adjusting ring | 2Cr13 | 0Cr18Ni9 | 0Cr17Ni12Mo2 |
4 | 阀瓣Disc | 2Cr13 | 0Cr18Ni9 | 0Cr17Ni12Mo2 |
5 | 弹簧Spring | 50CrVA | 50CrVA包覆氟塑料 Coated Teflon | 50CrVA包覆氟塑料 Coated Teflon |
6 | 阀杆Stem | 2Cr13 | 2Cr13 | 0Cr17Ni12Mo2 |
7 | 调整螺杆 Adjusting bolt | 45 | 2Cr13 | 0Cr17Ni12Mo2 |
8 | 保护罩Cap | ZG200-400 | ZG200-400 | 0Cr17Ni12Mo2 |
| 密封面材料 Sealing surface of material | 堆焊D507 Depositing D507 | 堆焊Co基硬质合金Depositing stellite |
三、外形尺寸和连接尺寸Dimensions (mm)
公称通径DN | 尺寸 (mm) |
do | R | L | L1 | G | H |
15 | 10 | 1/2 " | 40 | 65 | 1/2" | 135 |
20 | 15 | 3/4 " | 45 | 65 | 3/4" | 140 |
25 | 20 | 1 " | 45 | 76 | 1" | 155 |
32 | 25 | 1 1/4" | 55 | 85 | 1 1/4" | 170 |
40 | 32 | 1 1/2" | 60 | 85 | 1 1/2" | 310 |
50 | 40 | 2 " | 67 | 105 | 2" | 322 |
65 | 50 | 2 1/2" | 76 | 128 | 2 1/2" | 344 |
80 | 65 | 3 " | 110 | 145 | 3" | 395 |