美国阀门知识(美标阀门)
闸阀:
GATE VALVES:
明杆:这种阀门工作压力是125磅级和200 psi冷水压力,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。
Rising Stem: Valves shall be Class 125 and 200 psi CWP, rising stem, union bonnet, solid
wedge and manufactured in accordance with MSS-SP 80. 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.
暗杆:这种阀门工作压力是125磅级和200 psi冷水压力,暗杆,螺纹旋进阀盖,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,外部填料函和楔板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,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。
Non-Rising Stem: Valves shall be Class 125 and 200 psi CWP, nonrising stem, screw-in bonnet,
solid wedge and manufactured in accordance with MSS-SP 80. Body, bonnet, external stuffing box
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, nonasbestos packing and malleable or ductile iron
handwheel. Where higher operating pressures approach 150 psi, Class 150 union bonnet valves of
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-SP 80; 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
止回阀:
CHECK VALVES:
通径DN65以下的止回阀应该采用Y形旋启式结构,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 swing-type 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
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为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,需要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