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美国冷凝器和冷却水系统阀门选型二手仪器

2022-10-21 17:14:36  徳昌五金网

美国冷凝器和冷却水系统阀门选型

通径DN65以下管线控制阀 LINE CONTROL VALVES 2 1/2" AND SMALLER

球阀:  BALL VALVES:

这类阀门的额定安全工作压力为150 psi,非冲击冷水工作压力是600 psi,两件式铸青铜阀体,聚四氟乙烯阀座,标准流道,分离式包装螺母,配置可调节阀杆填料,防吹出阀杆和镀铬黄铜/青铜球体。在需要关注压降的地方,应采用不缩径全流道球阀或类似结构的阀门。阀门连接端口应该具有足够深度的美国国家标准协会ANSI螺纹,或加长焊接端口,并按照美国阀门和管件制造商标准化协会MSS-SP110标准制造。  Valves shall be rated 150 psi SWP and 600 psi non-shock CWP and will have 2-pc. cast bronze bodies, TFE seats, standard port, separate packnut with adjustable stem packing, anti-blowout stems and chrome-plated brass/bronze ball. Where pressure drop is a concern, full-port ball valves of like construction are to be used. Valve ends shall have full depth ANSI threads or extended solder connections and be manufactured to comply with MSS-SP110  可采用的标准流道阀门:  美国尼伯科T-580-70球阀(螺纹);S-580-70球阀(焊接)   ACCEPTABLE VALVES STANDARD PORT:  NIBCO T580-70 (threaded); S580-70 (solder)  可采用的不缩径全流道阀门:  美国尼伯科T-585-70(螺纹);S-585-70(焊接)   ACCEPTABLE VALVES FULL PORT:  NIBCO T585-70 (threaded); S585-70 (solder)  注:如果管道需要保温隔热或绝缘,那么球阀就要配置耐热绝缘材料的2英寸加长手柄,还需要配置保护套筒,这样在操作阀门时不会破坏蒸汽密封或保温隔热绝缘层。如果应用在保温隔热绝缘环境,需要包括可全程调节的操作点记忆功能。  NOTE: Where piping is insulated, ball valves shall be equipped with 2" extended handles of non-thermal conductive material. Also, provide a protective sleeve that allows operation of the valve without breaking the vapor seal or disturbing the insulation. Memory stops, which are fully adjustable after insulation is applied, shall be included.  可采用的标准流道阀门:  美国尼伯科T-580-70NS球阀(螺纹);S-580-70NS球阀(焊接)  ACCEPTABLE VALVES STANDARD PORT:  NIBCO T580-70NS (threaded); S580-70NS (solder)  可采用的不缩径全流道阀门:  美国尼伯科T-585-70NS球阀(螺纹);S-585-70NS球阀(焊接)  ACCEPTABLE VALVES FULL PORT:  NIBCO T585-70NS (threaded); S585-70NS (solder)

闸阀:  GATE VALVES:

明杆:这种阀门工作压力是125磅级,明杆,管接头式阀盖,实心楔板,并按照美国阀门和管件制造商标准化协会MSS-SP 80标准制造。阀体,阀盖和楔板材质符合美国材料试验协会ASTM B 62标准青铜。阀杆材质是符合美国材料试验协会ASTM B 371标准抗失锌现象的硅青铜,或B 99低锌合金,不含石棉的填料,和可锻或球墨铸铁手轮。如果工作压力比较高,接近150 psi,则应该采用150磅级管接头阀盖或类似结构的阀门。阀门连接方式应该是螺纹或焊接。  Valves shall be Class 125 rising stem, union bonnet, solid wedge and manufactured in accordance with MSS-SP80. Body, bonnet and wedge are to be of bronze ASTM B 62. Stems shall be of dezincification-resistant silicon bronze ASTM B 371 or low-zinc alloy B 99, non-asbestos packing and malleable or ductile iron handwheel. Where higher operating pressures approach 150 psi, Class 150 union bonnet valves of like construction will be used. Valve ends may be threaded or solder type.  可采用的阀门:  125磅级美国尼伯科T-124闸阀(螺纹)  150磅级美国尼伯科T-134闸阀(螺纹);S-134闸阀(焊接)   ACCEPTABLE VALVES:  Class 125 NIBCO T124 (threaded);  Class 150 NIBCO T134 (threaded); S134 (solder)

截止阀/角阀:  GLOBE/ANGLE VALVES:

这种阀门工作压力是125磅级,并按照美国阀门和管件制造标准化协会MSS-SP 80标准制造;阀体和阀盖材质是符合美国材料试验协会ASTM B 62标准的青铜。阀杆材质是符合美国材料试验协会ASTM B371标准的抗失锌现象的硅青铜或B 99标准的低锌合金,不含石棉的填料,聚四氟乙烯阀座阀瓣,可锻或球墨铸铁手轮。如果工作压力比较高,接近150 psi,则应该采用150磅级管接头阀盖或类似结构的阀门。阀门连接方式应该是螺纹或焊接。  Valves shall be Class 125 and manufactured in accordance with MSS-SP80, body and bonnet are to be of bronze ASTM B 62. Stems shall be of dezincification-resistant silicon bronze ASTM B 371 or low-zinc alloy B 99, non-asbestos packing, TFE seat disc and malleable or ductile iron handwheel. Where higher operating pressures approach 150 psi, Class 150 union bonnet valves of like construction will be used. Valve ends may be threaded or solder type.  可采用的阀门:  125磅级美国尼伯科T-211-Y截止阀/T-311-Y角阀(螺纹);S-211-Y截止阀/S-311-Y角阀(焊接)  150磅级美国尼伯科T-235-Y截止阀/T-335-Y角阀(螺纹);S-235-Y截止阀(焊接)  ACCEPTABLE VALVES:  Class 125 NIBCO globe/angle T211-Y/T311-Y (threaded); S211-Y/S311-Y (solder)  Class 150 NIBCO globe/angle T235-Y/T335-Y (threaded); S235-Y (solder)

止回阀:  CHECK VALVES:

通径DN65以下的止回阀应该采用Y型旋启式结构,并按照美国阀门和管件制造商标准化协会MSS-SP80标准制造,工作压力125磅级,符合美国材料试验协会ASTM B 62标准的青铜阀体,配置聚四氟乙烯阀座阀瓣。如果工作压力比较高,接近150 psi,则应该采用150磅级管接头阀盖或类似结构的阀门。阀门连接方式应该是螺纹或焊接。  2 1/2" and smaller shall be Y-pattern swingtype manufactured in accordance with MSS-SP80, Class 125, bronze ASTM B 62 body with TFE seat disc. Where higher operating pressures approach 150 psi, Class 150 valves of like construction shall be used. Valve ends may be threaded or solder type.  可采用的阀门:  125磅级美国尼伯科T-413-Y止回阀(螺纹); S-413-Y止回阀(焊接)  150磅级美国尼伯科T-433-Y止回阀(螺纹);S-433-Y止回阀(焊接)  ACCEPTABLE VALVES:  Class 125 NIBCO T413-Y (threaded); S413-Y (solder)  Class 150 NIBCO T433-Y (threaded); S433-Y (solder)

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