微启式安全阀概述：
上海良城阀门机电有限公司是国内生产安全阀的主导厂，厂内建有远东*的安全阀测试中心，国产*台安全阀就是我厂诞生的。二十多年来，良城牌安全阀的品种已发展到百余个系列，千余个规格，产品广泛应用于锅炉、石化、电站以及国防工业。并为国内*座核电站秦山核电站研制成功了*批核级安全阀。良城牌安全阀主要产品系列分别荣获机械部信得过产品，上海市优质产品称号，国家银质奖。 良城牌安全阀是受压设备、容器或管路上的*超压保护装置。当设备压力升高达到预定值时，安全阀自动开启，继而全量排放，防止设备压力继续升高；当压力降低到规定值时，安全阀及时自动关闭。良城牌安全阀是选用者为保护工程设备安全运行的的，zui科学的明智选择。
主要连接尺寸：
| 型 号 | 公称 | 主要结构尺寸（mm） | 阀体
材料 | 简要性能 | 备注 |
| 通径
DN（mm） | 压力
PN（Mpa） | D | D1 | L | L1 | H | 适用温度℃ | 适用介质 |
| A41H-16C | 65 | 1.6 | | | | | | 铸钢 | ≤300 | 油品、空气、水 | |
| " | 80 | " | 195 | 195 | 160 | 135 | 385 | " | " | " | |
| " | 100 | " | 215 | 215 | 170 | 160 | 525 | " | " | " | |
| " | 150 | " | 285 | 285 | 250 | 210 | 720 | " | " | " | |
| " | 200 | " | 340 | 340 | 290 | 310 | 777 | " | " | " | |
| A41H-125 | 25 | 2.5 | | | | | | 铸钢 | ≤300 | 油品、空气、水 | |
| " | 32 | " | 135 | 135 | 115 | 100 | 266 | " | " | " | |
| " | 40 | " | 145 | 145 | 120 | 105 | 318 | " | " | " | |
| " | 50 | " | 160 | 160 | 130 | 115 | 350 | " | " | " | |
| " | 65 | " | | | | | | " | " | " | |
| " | 80 | " | 195 | 195 | 160 | 135 | 570 | " | " | " | |
| " | 100 | " | 230 | 215 | 170 | 160 | 580 | " | " | " | |
| A41H-25 | 150 | " | | | | | | " | " | " | |
| " | 200 | " | | | | | | " | " | " | |
| A41H-40 | 25 | 4.0 | | | | | | 铸钢 | ≤300 | 油品、空气、水 | |
| " | 32 | " | 135 | 135 | 115 | 100 | 266 | " | " | " | |
| " | 40 | " | 145 | 145 | 120 | 105 | 318 | " | " | " | |
| " | 50 | " | 160 | 160 | 130 | 115 | 350 | " | " | " | |
| " | 65 | " | | | | | | " | " | " | |
| " | 80 | " | 195 | 195 | 160 | 135 | 570 | " | " | " | |
| " | 100 | " | 235 | 220 | 170 | 160 | 585 | " | " | " | |
| " | 150 | " | | | | | | " | " | " | |
| " | 200 | " | | | | | | " | " | " | |
| SA41H-16C | 25 | 1.6 | 115 | 45 | 55 | 86 | 200 | 铸钢 | ≤300 | 空气、水等 | 出口：G1" |
| SA41H-25 | 25 | 2.5 | 115 | 45 | 55 | 86 | 200 | " | " | " | " |
| SA41H-40 | 25 | 4.0 | 115 | 45 | 55 | 86 | 200 | " | " | " | " |
| SA41H-64 | 25 | 6.4 | 115 | 45 | 55 | 86 | 200 | " | " | " | " |
| SA41Y-160 | 15 | 16.0 | 95 | 95 | 95 | 100 | 238 | 锻钢 | ≤200 | 油品、氮氢气 | |
| " | 20 | " | | | | | | " | " | " | |
| " | 25 | " | | | | | | " | " | " | |
| " | 32 | " | 110 | 165 | 130 | 135 | 310 | " | " | " | do12、14、16 |
| SA41Y-320 | 15 | 32.0 | 105 | 115 | 95 | 100 | 238 | " | " | " | |
| " | 20 | " | 110 | 115 | 95 | 100 | 238 | " | " | " | |
| " | 25 | " | | | | | | " | " | " | |
| " | 32 | " | 135 | 165 | 130 | 135 | 334 | " | " | " | do12、14、16 |
| SA41Y-500 | 15 | 50.0 | 105 | 115 | 95 | 100 | 222 | " | " | " | |
| " | 20 | " | | | | | | " | " | " | |
| " | 25 | " | | | | | | " | " | " | |
| 型 号 | 公称 | 主要结构尺寸（mm） | 阀体 材料 | 简要性能 | 备注 |
| 通径 DN（mm） | 压力PN（Mpa） | D | D1 | L | L1 | H | 适用温度℃ | 适用介质 |
| A47H-16C | 40 | 1.6 | 150 | 150 | 120 | 110 | 360 | 铸钢 | ≤350 | 蒸气、水、空气 | |
| " | 50 | " | 160 | 160 | 135 | 120 | 380 | " | " | " | |
| " | 65 | " | | | | | | " | " | " | |
| " | 80 | " | 200 | 200 | 170 | 135 | 405 | " | " | " | |
| " | 100 | " | 215 | 215 | 170 | 160 | 580 | " | " | " | |
| " | 150 | " | 285 | 285 | 250 | 210 | 729 | " | " | " | |
| " | 200 | " | 340 | 340 | 290 | 310 | 834 | " | " | " | |
| A47H-25 | 40 | 2.5 | 150 | 150 | 120 | 110 | 360 | " | " | " | |
| " | 50 | " | 160 | 160 | 130 | 115 | 380 | " | " | " | |
| " | 65 | " | | | | | | " | " | " | |
| | 80 | " | 195 | 195 | 160 | 135 | 620 | " | " | " | |
| | 100 | " | 230 | 215 | 170 | 160 | 582 | " | " | " | |
| A47H-40 | 40 | 4 | 150 | 150 | 120 | 110 | 360 | " | " | " | |
| | 50 | " | 160 | 160 | 130 | 115 | 370 | " | " | " | |
| | 65 | " | | | | | | " | " | " | |
| | 80 | " | 195 | 195 | 160 | 135 | 620 | " | " | " | |
| | 100 | " | 235 | 220 | 170 | 160 | 650 | " | " | " |
制造标准：中国GB、机械部JB、化工标准HG、美标API、ANSI、德标DIN、日本JIS、JPI、英标BS生产。阀体材质：铜、铸铁、铸钢、碳钢、WCB、WC6、WC9、20#、25#、锻钢、A105、F11、F22、不锈钢、304、304L、316、316L、铬钼钢、低温钢、钛合金钢等。工作压力1.0Mpa-50.0Mpa。工作温度：-196℃-650℃。连接方式：内螺纹、外螺纹、法兰、焊接、对焊、承插焊、卡套、卡箍。驱动方式：手动、气动、液动、电动。上海良城阀门机电有限公司拥有zui*的生产设备和技术工程师，有能力按照各国标准以及各种行业标准生产制造优质阀门。
