a48y扳手弹簧全启式安全阀

产品概述：a48y半封闭带扳手弹簧全启式安  全阀适用于工作温度≤350℃的蒸汽、空气等介质的设备和管路上。a44y全封闭带扳手弹簧全启式安  全阀适用于工作温度≤300℃的空气、石油等介质的设备或管路上，作为超压保护装置。

连接法兰标准pn＜6.4mpa按jb/t-94系列1。pn≥6.4mpa按jb/t-94系列2标准。

结构简述

1、带扳手弹簧全启式安  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。

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运行参数：型号通径dodkgg1bff1z-øddn＇d1k1g3g2b1f＇f1＇z1-ød1ll1≈ha48y-16c a44y-16c a44y-16p a44y-16r201510575 55162 4-142511585 65162 4-1411095411251611585 65162 4-1432140100 78182 4-18110954113220140100 78182 4-1840150110 85183 4-181151004114025150110 85183 4-1850165125 100203 4-181201104725032165125 100203 4-1865185145 120203 4-181351205326540185145 120203 4-1880200160 135203 8-181601405568050200160 135203 8-18100220180 155223 8-1817013556110065220180 155203 8-18125250210 185223 8-1819517566712580250210 185223 8-18150285240 210243 8-23210190857150100285240 210243 8-23175310270 240263 8-23255230915200125340295 265263 12-23250405355 320303 12-263002601073250150405355 320303 12-26300460410 375304 12-263503201307300220460410 375304 12-26400580525 485364 16-303703501233350250520470 435344 16-26500715650 608444 20-345004501711400280580525 485364 16-30500715650 608444 20-345004501780a48y-25

a44y-25

a44y-25p a44y-25r201510575 55162 4-142511585 65162 4-1411095411251611585 65162 4-1432140100 78182 4-18110954113220140100 78182 4-1840150110 85183 4-181151004114025150110 85183 4-1850165125 100203 4-181201104725032165125 100203 4-1865185145 120203 4-181351205326540185145 120223 8-1880200160 135203 8-181601405568050200160 135223 8-18100220180 155223 8-1817013556110065230190 160243 8-23125250210 185223 8-1819517566712580270220 188283 8-26150285240 210243 8-23210190857150100300250 218303 8-26175310270 240263 8-23255230915200125360310 278343 12-26250405355 320303 12-263002601073250150425370 332363 12-30300460410 375304 12-263503201307300220485430 390404 16-30400580525 485364 16-303703501233350250555490 448444 16-34500715650 608444 20-345004501711400280620550 505484 16-36500715650 608444 20-345004501780a48y-40 a44y-40 a44y-40p a44y-40r201510575515516244-142511585 65162 4-1411095411251611585586516244-1432140100 78182 4-18110954113220140100667818244-1840150110 85183 4-181151004114025150110768518344-1850165125 100203 4-1812011047250321651258810020344-1865185145 120203 4-18135120532654018514511012022348-1880200160 135203 8-18160140556805020016012113522348-18100220180 155223 8-18170135561100652351901501602434.58-23125250210 185223 8-18195175697125802702201761882834.58-26150285240 210243 8-232101908571501003002502042183034.58-26175310270 240263 8-232552309152001253753202602823834.512-30250405355 320303 12-2630026010732501504503853133454234.512-34300460410 375304 12-2635032013073002205154503644084644.516-34400580525 485364 16-303703501233350250580510422465524516-36500715650 608444 20-345004501711400280660585474535584516-41500715650 608444 20-345004501711a48y-64

a44y-64

a44y-64p a44y-64r201012590516822244-182511585586516244-1496852972516140100587822244-1832140100667818244-181101003103220155110668224244-2340150110768518344-181301103224025170125769524344-23501651258810020344-1813512035250321801358810526344-236518514511012022348-18155135425654020516011013028348-238020016012113522348-18175160570805021517012114030348-231002351901501602434.58-23175160560100652502001501683234.58-261252702201761882834.58-251951956901501003452802042403834.58-342003753202602823834.512-30280265935a48y-100 a44y-100 a44y-100p a44y-100r201012590516822244-182511585586516344-1496852972516140100587824244-1832140100667818244-181101003103220155110668224244-2340150110768518244-181301103224025170125769526344-23501651258810020344-1813512035250321951458811228344-266518514511012022348-18155135425653222017011013832348-268020016012113522348-18175160570804023018012114834348-261002351901501602434.58-23175160560100502652101501723834.58-301252702201761882834.58-25195195690150803552902042504634.512-342003753202602823834.512-30280265935

使用范围：a48y半封闭带扳手弹簧全启式安  全阀适用于工作温度≤350℃的蒸汽、空气等介质的设备和管路上。a44y全封闭带扳手弹簧全启式安  全阀适用于工作温度≤300℃的空气、石油等介质的设备或管路上，作为超压保护装置。