一、A42Y弹簧全启封闭式安全阀概述
	A42Y-C型弹簧全启封闭式安全阀适用于工作温度≤300℃空气、石油气、液体等介质的设备和管路上。A42Y-P型弹簧全启封闭式安全阀及A42Y-R型弹簧全启封闭式安全阀适用于工作温度≤200℃有腐蚀性的介质的设备和管路上,作为超压保护装置。连接法兰标准按JB/T……-94系列1。≥6.4MPa按JB/T……-94系列2。
	二、A42Y弹簧全启封闭式安全阀结构简述
	1、弹簧全启式安全阀具有结构简单、密封性能好、开启压力准确、排放能力大、回座压差小、调整方便等特点。
2、喷嘴型阀座:阀座为位伐尔喷嘴型阀座,蒸汽流经阀座出口处时达到音速,排放系数大,阀座密封面堆焊钴铬钨硬质合金,耐磨抗冲蚀,寿命长。
3、热弹性阀瓣:阀瓣设计为热弹性结构,利用其在介质压力下微小的变形,提高密封能力,克服安全阀在介质压力下临近整定压力时的前泄现象。阀瓣密封面采用先进的激光淬火技术,提高了硬度、耐磨性、抗冲抗性。
4、调节螺母:通过调整调节螺母,调整弹簧压缩量,使阀门能够很方便、很迅速地获得准确的整定压力。
5、背压调整套:调整阀瓣背压的辅助机构,通过背压调整套调整,可获得合适的回座压差。上调时,使阀门背压降低。下调时,使阀门背压提高。
	三、A42Y弹簧全启封闭式安全阀安装说明
	1、安全阀必须垂直安装,并最好直接安装在容器或管道的接头上。接头内径应不小于安全阀的进口通径。
2、安全阀的出口必须装设适当的膨胀节,以防止排放管的热膨胀给安全阀带来不应有的热应力。排放管内径应比阀门出口直径大,长度尽可能短,避免拐弯。排放管及膨胀节重量不应作用在安全阀上,应固定在建筑上。排放管的中心线与阀体的中心线间距离尽可能的短。对每台安全阀都应单独装设排放管。
3、消声器的出口处要有足够的面积,防止产生背压影响阀门的排放能力。
	四、A42Y弹簧全启封闭式安全阀主要零部件材料
| 
					NO. | 
					零件名称 | 
					A42Y-C/KA42Y-C材料 | 
					A42Y-P/KA42Y-P材料 | 
					A42Y-R材料 | 
					DA42Y-P材料 | 
| 
					1 | 
					阀座 | 
					2Cr13/1Cr18Ni9Ti | 
					ZG1Cr18Ni9Ti | 
					ZG1Cr18Ni12Mo2Ti | 
					ZG1Cr18Ni9Ti | 
| 
					2 | 
					阀体 | 
					WCB | 
					ZG1Cr18Ni9Ti | 
					ZG1Cr18Ni12Mo2Ti | 
					LCB/ZG1Cr18Ni9Ti | 
| 
					3 | 
					调节圈 | 
					2Cr13/1Cr18Ni9Ti | 
					1Cr18Ni9Ti | 
					1Cr18Ni12Mo2Ti | 
					1Cr18Ni9Ti | 
| 
					4 | 
					反冲盘 | 
					2Cr13/1Cr18Ni9Ti | 
					1Cr18Ni9Ti | 
					1Cr18Ni12Mo2Ti | 
					1Cr18Ni9Ti | 
| 
					5 | 
					阀瓣 | 
					2Cr13/1Cr18Ni9Ti | 
					1Cr18Ni9Ti | 
					1Cr18Ni12Mo2Ti | 
					1Cr18Ni9Ti | 
| 
					6 | 
					导向套 | 
					2Cr13/1Cr18Ni9Ti | 
					1Cr18Ni9Ti | 
					1Cr18Ni12Mo2Ti | 
					1Cr18Ni9Ti | 
| 
					7 | 
					阀盖 | 
					ZG230-450 | 
					ZG230-450 | 
					ZG230-450 | 
					ZG1Cr18Ni9Ti | 
| 
					8 | 
					弹簧 | 
					50CrVA | 
					50CrVA包覆氟塑料 | 
					50CrVA包覆氟塑料 | 
					50CrVA | 
| 
					9 | 
					阀杆 | 
					2Cr13 | 
					1Cr18Ni9Ti/1Cr18Ni12Mo2Ti | 
					1Cr18Ni9Ti/1Cr18Ni12Mo2Ti | 
					1Cr18Ni9Ti | 
| 
					10 | 
					调整螺杆 | 
					45 | 
					2Cr13 | 
					2Cr13 | 
					2Cr13 | 
| 
					11 | 
					阀帽 | 
					ZG200-400 | 
					ZG200-400 | 
					ZG200-400 | 
					ZG230-450 | 
| 
					密封面材料 | 
					堆焊Co基硬质合金 | ||||
	五、A42Y弹簧全启封闭式安全阀外形尺寸和连接尺寸
| 
					型号 | 
					公称通径 | 
					do | 
					D | 
					K | 
					g | 
					g1 | 
					b | 
					f | 
					f1 | 
					Z-¢d | 
					DN' | 
					D1 | 
					K1 | 
					g3 | 
					g2 | 
					b1 | 
					f' | 
					f1' | 
					Z1-¢d1 | 
					L | 
					L1 | 
					≈H | 
| 
					A42Y-16C | 
					20 | 
					15 | 
					105 | 
					75 | 
					55 | 
					16 | 
					2 | 
					4-14 | 
					25 | 
					115 | 
					85 | 
					65 | 
					16 | 
					2 | 
					4-14 | 
					110 | 
					95 | 
					378 | ||||
| 
					25 | 
					16 | 
					115 | 
					85 | 
					65 | 
					16 | 
					2 | 
					4-14 | 
					32 | 
					140 | 
					100 | 
					78 | 
					18 | 
					2 | 
					4-18 | 
					110 | 
					95 | 
					378 | |||||
| 
					32 | 
					20 | 
					140 | 
					100 | 
					78 | 
					18 | 
					2 | 
					4-18 | 
					40 | 
					150 | 
					110 | 
					85 | 
					18 | 
					3 | 
					4-18 | 
					115 | 
					100 | 
					378 | |||||
| 
					40 | 
					25 | 
					150 | 
					110 | 
					85 | 
					18 | 
					3 | 
					4-18 | 
					50 | 
					165 | 
					125 | 
					100 | 
					20 | 
					3 | 
					4-18 | 
					120 | 
					110 | 
					406 | |||||
| 
					50 | 
					32 | 
					165 | 
					125 | 
					100 | 
					20 | 
					3 | 
					4-18 | 
					65 | 
					185 | 
					145 | 
					120 | 
					20 | 
					3 | 
					4-18 | 
					135 | 
					120 | 
					450 | |||||
| 
					65 | 
					40 | 
					185 | 
					145 | 
					120 | 
					20 | 
					3 | 
					4-18 | 
					80 | 
					200 | 
					160 | 
					135 | 
					20 | 
					3 | 
					8-18 | 
					160 | 
					140 | 
					520 | |||||
| 
					80 | 
					50 | 
					200 | 
					160 | 
					135 | 
					20 | 
					3 | 
					8-18 | 
					100 | 
					220 | 
					180 | 
					155 | 
					22 | 
					3 | 
					8-18 | 
					170 | 
					135 | 
					525 | |||||
| 
					100 | 
					65 | 
					220 | 
					180 | 
					155 | 
					22 | 
					3 | 
					8-18 | 
					125 | 
					250 | 
					210 | 
					185 | 
					22 | 
					3 | 
					8-18 | 
					195 | 
					175 | 
					690 | |||||
| 
					125 | 
					80 | 
					250 | 
					210 | 
					185 | 
					22 | 
					3 | 
					8-18 | 
					150 | 
					285 | 
					240 | 
					210 | 
					24 | 
					3 | 
					8-23 | 
					210 | 
					190 | 
					780 | |||||
| 
					150 | 
					100 | 
					285 | 
					240 | 
					210 | 
					24 | 
					3 | 
					8-23 | 
					175 | 
					310 | 
					270 | 
					240 | 
					26 | 
					3 | 
					8-23 | 
					255 | 
					230 | 
					838 | |||||
| 
					200 | 
					125 | 
					340 | 
					295 | 
					265 | 
					26 | 
					3 | 
					12-23 | 
					250 | 
					405 | 
					355 | 
					320 | 
					30 | 
					3 | 
					12-26 | 
					300 | 
					260 | 
					992 | |||||
| 
					250 | 
					150 | 
					405 | 
					355 | 
					320 | 
					30 | 
					3 | 
					12-26 | 
					300 | 
					460 | 
					410 | 
					375 | 
					30 | 
					4 | 
					12-26 | 
					350 | 
					320 | 
					1266 | |||||
| 
					300 | 
					220 | 
					460 | 
					410 | 
					375 | 
					30 | 
					4 | 
					12-26 | 
					400 | 
					580 | 
					525 | 
					485 | 
					36 | 
					4 | 
					16-30 | 
					370 | 
					350 | 
					1283 | |||||
| 
					350 | 
					250 | 
					520 | 
					470 | 
					435 | 
					34 | 
					4 | 
					16-26 | 
					500 | 
					715 | 
					650 | 
					608 | 
					44 | 
					4 | 
					20-34 | 
					500 | 
					450 | 
					1520 | |||||
| 
					400 | 
					280 | 
					580 | 
					525 | 
					485 | 
					36 | 
					4 | 
					16-30 | 
					500 | 
					715 | 
					650 | 
					608 | 
					44 | 
					4 | 
					20-34 | 
					500 | 
					450 | 
					1530 | |||||
| 
					A42Y-25C | 
					20 | 
					15 | 
					105 | 
					75 | 
					55 | 
					16 | 
					2 | 
					4-14 | 
					25 | 
					115 | 
					85 | 
					65 | 
					16 | 
					2 | 
					4-14 | 
					110 | 
					95 | 
					378 | ||||
| 
					25 | 
					16 | 
					115 | 
					85 | 
					65 | 
					16 | 
					2 | 
					4-14 | 
					32 | 
					140 | 
					100 | 
					78 | 
					18 | 
					2 | 
					4-18 | 
					110 | 
					95 | 
					378 | |||||
| 
					32 | 
					20 | 
					140 | 
					100 | 
					78 | 
					18 | 
					2 | 
					4-18 | 
					40 | 
					150 | 
					110 | 
					85 | 
					18 | 
					3 | 
					4-18 | 
					115 | 
					100 | 
					378 | |||||
| 
					40 | 
					25 | 
					150 | 
					110 | 
					85 | 
					18 | 
					3 | 
					4-18 | 
					50 | 
					165 | 
					125 | 
					100 | 
					20 | 
					3 | 
					4-18 | 
					120 | 
					110 | 
					406 | |||||
| 
					50 | 
					32 | 
					165 | 
					125 | 
					100 | 
					20 | 
					3 | 
					4-18 | 
					65 | 
					185 | 
					145 | 
					120 | 
					20 | 
					3 | 
					4-18 | 
					135 | 
					120 | 
					450 | |||||
| 
					65 | 
					40 | 
					185 | 
					145 | 
					120 | 
					22 | 
					3 | 
					8-18 | 
					80 | 
					200 | 
					160 | 
					135 | 
					20 | 
					3 | 
					8-18 | 
					160 | 
					140 | 
					520 | |||||
| 
					80 | 
					50 | 
					200 | 
					160 | 
					135 | 
					22 | 
					3 | 
					8-18 | 
					100 | 
					220 | 
					180 | 
					155 | 
					22 | 
					3 | 
					8-18 | 
					170 | 
					135 | 
					525 | |||||
| 
					100 | 
					65 | 
					230 | 
					190 | 
					160 | 
					24 | 
					3 | 
					8-23 | 
					125 | 
					250 | 
					210 | 
					185 | 
					22 | 
					3 | 
					8-18 | 
					195 | 
					175 | 
					690 | |||||
| 
					125 | 
					80 | 
					270 | 
					220 | 
					188 | 
					28 | 
					3 | 
					8-26 | 
					150 | 
					285 | 
					240 | 
					210 | 
					24 | 
					3 | 
					8-23 | 
					210 | 
					190 | 
					780 | |||||
| 
					150 | 
					100 | 
					300 | 
					250 | 
					218 | 
					30 | 
					3 | 
					8-26 | 
					175 | 
					310 | 
					270 | 
					240 | 
					26 | 
					3 | 
					8-23 | 
					255 | 
					230 | 
					838 | |||||
| 
					200 | 
					125 | 
					360 | 
					310 | 
					278 | 
					34 | 
					3 | 
					12-26 | 
					250 | 
					405 | 
					355 | 
					320 | 
					30 | 
					3 | 
					12-26 | 
					300 | 
					260 | 
					992 | |||||
| 
					250 | 
					150 | 
					425 | 
					370 | 
					332 | 
					36 | 
					3 | 
					12-30 | 
					300 | 
					460 | 
					410 | 
					375 | 
					30 | 
					4 | 
					12-26 | 
					350 | 
					320 | 
					1266 | |||||
| 
					300 | 
					220 | 
					485 | 
					430 | 
					390 | 
					40 | 
					4 | 
					16-30 | 
					400 | 
					580 | 
					525 | 
					485 | 
					36 | 
					4 | 
					16-30 | 
					370 | 
					350 | 
					1283 | |||||
| 
					A42Y-40C | 
					20 | 
					15 | 
					105 | 
					75 | 
					51 | 
					55 | 
					16 | 
					2 | 
					4 | 
					4-14 | 
					25 | 
					115 | 
					85 | 
					65 | 
					16 | 
					2 | 
					4-14 | 
					110 | 
					95 | 
					378 | ||
| 
					25 | 
					16 | 
					115 | 
					85 | 
					58 | 
					65 | 
					16 | 
					2 | 
					4 | 
					4-14 | 
					32 | 
					140 | 
					100 | 
					78 | 
					18 | 
					2 | 
					4-18 | 
					110 | 
					95 | 
					378 | |||
| 
					32 | 
					20 | 
					140 | 
					100 | 
					66 | 
					78 | 
					18 | 
					2 | 
					4 | 
					4-18 | 
					40 | 
					150 | 
					110 | 
					85 | 
					18 | 
					3 | 
					4-18 | 
					115 | 
					100 | 
					378 | |||
| 
					40 | 
					25 | 
					150 | 
					110 | 
					76 | 
					85 | 
					18 | 
					3 | 
					4 | 
					4-18 | 
					50 | 
					165 | 
					125 | 
					100 | 
					20 | 
					3 | 
					4-18 | 
					120 | 
					110 | 
					406 | |||
| 
					50 | 
					32 | 
					165 | 
					125 | 
					88 | 
					100 | 
					20 | 
					3 | 
					4 | 
					4-18 | 
					65 | 
					185 | 
					145 | 
					120 | 
					20 | 
					3 | 
					4-18 | 
					135 | 
					120 | 
					450 | |||
| 
					65 | 
					40 | 
					185 | 
					145 | 
					110 | 
					120 | 
					22 | 
					3 | 
					4 | 
					8-18 | 
					80 | 
					200 | 
					160 | 
					135 | 
					20 | 
					3 | 
					8-18 | 
					160 | 
					140 | 
					520 | |||
| 
					80 | 
					50 | 
					200 | 
					160 | 
					121 | 
					135 | 
					22 | 
					3 | 
					4 | 
					8-18 | 
					100 | 
					220 | 
					180 | 
					155 | 
					22 | 
					3 | 
					8-18 | 
					170 | 
					135 | 
					525 | |||
| 
					100 | 
					65 | 
					235 | 
					190 | 
					150 | 
					160 | 
					24 | 
					3 | 
					4.5 | 
					8-23 | 
					125 | 
					250 | 
					210 | 
					185 | 
					22 | 
					3 | 
					8-18 | 
					195 | 
					175 | 
					690 | |||
| 
					125 | 
					80 | 
					270 | 
					220 | 
					176 | 
					188 | 
					28 | 
					3 | 
					4.5 | 
					8-26 | 
					150 | 
					285 | 
					240 | 
					210 | 
					24 | 
					3 | 
					8-23 | 
					210 | 
					190 | 
					780 | |||
| 
					150 | 
					100 | 
					300 | 
					250 | 
					204 | 
					218 | 
					30 | 
					3 | 
					4.5 | 
					8-26 | 
					175 | 
					310 | 
					270 | 
					240 | 
					26 | 
					3 | 
					8-23 | 
					255 | 
					230 | 
					838 | |||
| 
					200 | 
					125 | 
					375 | 
					320 | 
					260 | 
					282 | 
					38 | 
					3 | 
					4.5 | 
					12-30 | 
					250 | 
					405 | 
					355 | 
					320 | 
					30 | 
					3 | 
					12-26 | 
					300 | 
					260 | 
					992 | |||
| 
					250 | 
					150 | 
					450 | 
					385 | 
					313 | 
					345 | 
					42 | 
					3 | 
					4.5 | 
					12-34 | 
					300 | 
					460 | 
					410 | 
					375 | 
					30 | 
					4 | 
					12-26 | 
					350 | 
					320 | 
					1266 | |||
| 
					A42Y-64  | 
					20 | 
					10 | 
					125 | 
					90 | 
					51 | 
					68 | 
					22 | 
					2 | 
					4 | 
					4-18 | 
					25 | 
					115 | 
					85 | 
					58 | 
					65 | 
					16 | 
					2 | 
					4 | 
					4-14 | 
					96 | 
					85 | 
					264 | 
| 
					25 | 
					16 | 
					140 | 
					100 | 
					58 | 
					78 | 
					22 | 
					2 | 
					4 | 
					4-18 | 
					32 | 
					140 | 
					100 | 
					66 | 
					78 | 
					18 | 
					2 | 
					4 | 
					4-18 | 
					110 | 
					100 | 
					277 | |
| 
					32 | 
					20 | 
					155 | 
					110 | 
					66 | 
					82 | 
					24 | 
					2 | 
					4 | 
					4-23 | 
					40 | 
					150 | 
					110 | 
					76 | 
					85 | 
					18 | 
					3 | 
					4 | 
					4-18 | 
					130 | 
					110 | 
					289 | |
| 
					40 | 
					25 | 
					170 | 
					125 | 
					76 | 
					95 | 
					24 | 
					3 | 
					4 | 
					4-23 | 
					50 | 
					165 | 
					125 | 
					88 | 
					100 | 
					20 | 
					3 | 
					4 | 
					4-18 | 
					130 | 
					120 | 
					319 | |
| 
					50 | 
					32 | 
					180 | 
					135 | 
					88 | 
					105 | 
					26 | 
					3 | 
					4 | 
					4-23 | 
					65 | 
					185 | 
					145 | 
					110 | 
					120 | 
					222 | 
					3 | 
					4 | 
					8-18 | 
					135 | 
					130 | 
					389 | |
| 
					65 | 
					40 | 
					205 | 
					160 | 
					110 | 
					130 | 
					28 | 
					3 | 
					4 | 
					8-23 | 
					80 | 
					200 | 
					160 | 
					121 | 
					135 | 
					22 | 
					3 | 
					4 | 
					8-18 | 
					175 | 
					160 | 
					493 | |
| 
					80 | 
					50 | 
					215 | 
					170 | 
					121 | 
					140 | 
					30 | 
					3 | 
					4 | 
					8-23 | 
					100 | 
					235 | 
					190 | 
					150 | 
					160 | 
					24 | 
					3 | 
					4.5 | 
					8-23 | 
					175 | 
					160 | 
					483 | |
| 
					100 | 
					65 | 
					250 | 
					200 | 
					150 | 
					168 | 
					32 | 
					3 | 
					4.5 | 
					8-26 | 
					125 | 
					270 | 
					220 | 
					176 | 
					188 | 
					28 | 
					3 | 
					4.5 | 
					8-25 | 
					195 | 
					195 | 
					613 | |
| 
					150 | 
					100 | 
					345 | 
					280 | 
					204 | 
					240 | 
					38 | 
					3 | 
					4.5 | 
					8-34 | 
					200 | 
					375 | 
					320 | 
					260 | 
					282 | 
					38 | 
					3 | 
					4.5 | 
					12-30 | 
					280 | 
					265 | 
					894 | |
| 
					A42Y-100 | 
					20 | 
					10 | 
					125 | 
					90 | 
					51 | 
					68 | 
					22 | 
					2 | 
					4 | 
					4-18 | 
					25 | 
					115 | 
					85 | 
					58 | 
					65 | 
					16 | 
					2 | 
					4 | 
					4-14 | 
					96 | 
					85 | 
					264 | 
| 
					25 | 
					16 | 
					140 | 
					100 | 
					58 | 
					78 | 
					24 | 
					2 | 
					4 | 
					4-18 | 
					32 | 
					140 | 
					100 | 
					66 | 
					78 | 
					18 | 
					2 | 
					4 | 
					4-18 | 
					110 | 
					100 | 
					277 | |
| 
					32 | 
					20 | 
					155 | 
					110 | 
					66 | 
					82 | 
					24 | 
					2 | 
					4 | 
					4-23 | 
					40 | 
					150 | 
					110 | 
					76 | 
					85 | 
					18 | 
					3 | 
					4 | 
					4-18 | 
					130 | 
					110 | 
					289 | |
| 
					40 | 
					25 | 
					170 | 
					125 | 
					76 | 
					95 | 
					26 | 
					3 | 
					4 | 
					4-23 | 
					50 | 
					165 | 
					125 | 
					8 | 
					100 | 
					20 | 
					3 | 
					4 | 
					4-18 | 
					130 | 
					120 | 
					319 | |
| 
					50 | 
					32 | 
					195 | 
					145 | 
					88 | 
					112 | 
					28 | 
					3 | 
					4 | 
					4-26 | 
					65 | 
					185 | 
					145 | 
					110 | 
					120 | 
					22 | 
					3 | 
					4 | 
					8-18 | 
					135 | 
					130 | 
					389 | |
| 
					65 | 
					32 | 
					220 | 
					170 | 
					110 | 
					138 | 
					32 | 
					3 | 
					4 | 
					8-26 | 
					80 | 
					200 | 
					160 | 
					121 | 
					135 | 
					22 | 
					3 | 
					4 | 
					8-18 | 
					175 | 
					160 | 
					493 | |
| 
					80 | 
					40 | 
					230 | 
					180 | 
					121 | 
					148 | 
					34 | 
					3 | 
					4 | 
					8-26 | 
					100 | 
					235 | 
					190 | 
					150 | 
					160 | 
					24 | 
					3 | 
					4.5 | 
					8-23 | 
					175 | 
					160 | 
					483 | |
| 
					100 | 
					50 | 
					265 | 
					210 | 
					150 | 
					172 | 
					38 | 
					3 | 
					4.5 | 
					8-30 | 
					125 | 
					270 | 
					220 | 
					176 | 
					188 | 
					28 | 
					3 | 
					4.5 | 
					8-25 | 
					195 | 
					195 | 
					613 | |
| 
					150 | 
					80 | 
					355 | 
					290 | 
					204 | 
					250 | 
					46 | 
					3 | 
					4.5 | 
					12-34 | 
					200 | 
					375 | 
					320 | 
					260 | 
					282 | 
					38 | 
					3 | 
					4.5 | 
					12-30 | 
					280 | 
					265 | 
					894 | 
	六、A42Y弹簧全启封闭式安全阀系列型号
| 
					A42Y-16C | 
					A42Y-16P | 
					A42Y-16R | 
| 
					KA42Y-16 | 
					DA42Y-16C/P | 
					A42Y-25 | 
| 
					A42Y-25P | 
					A42Y-25R | 
					KA42Y-25(P) | 
| 
					DA42Y-25P | 
					A42Y-40 | 
					A42Y-40P | 
| 
					A42Y-40R | 
					KA42Y-40 | 
					DA42Y-40P | 
| 
					A42Y-64 | 
					A42Y-64P | 
					A42Y-64R | 
| 
					KA42Y-64 | 
					DA42Y-64P | 
					A42Y-100 | 
| 
					A42Y-100 | 
					PA42Y-100R | 
					KA42Y-100 | 
| 
					DA42Y-100P | 
					 | 
![[slidelist:title] [slidelist:title]](/Templates/3kwx/images/top.jpg)

 
 
   