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 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。阀门连接方式可以是螺纹或焊接。
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. 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)
ACCEPTABLE VALVES:
Class 125 NIBCO T124 (threaded);
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。
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 dezincificationresistant silicon bronze ASTM B 371 or
low-zinc alloy B 99, non-asbestos packing, TFE seat disc and malleable
or ductile iron handwheel
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)
ACCEPTABLE VALVES:
Class 125 NIBCO globe/angle T211-Y/T311-Y (threaded); S211-Y/S311-Y
(solder)
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通径DN65以上的管线控制阀
LINE CONTROL VALVES 2 1/2” AND LARGER
闸阀,截止阀/角阀:
GATE, GLOBE/ANGLE VALVES:
这些阀门工作压力为125磅级,并按照美国阀门与管件制造商标准化协会MSS-SP70(闸阀)标准或MSS-SP85(截止阀/角阀)标准制造,法兰连接,螺栓阀盖,OS&Y,铸铁阀体,青铜阀内件,阀体和阀盖材质符合美国材料试验协会ASTM
A 126级别B铸铁标准,填料和衬垫不含石棉。
Valves to be Class 125 manufactured in accordance
with MSS-SP70 (gate) or MSS-SP85 (globe/angle), flanged, bolted bonnet,
OS&Y, iron body, bronze trimmed, with body and bonnet conforming to
ASTM A 126 Class B cast iron. Packing and gaskets to be non-asbestos.
可采用的阀门:
美国尼伯科F-617-O闸阀
美国尼伯科F-718-B截止阀
美国尼伯科F-818-B角阀
ACCEPTABLE VALVES:
Gate NIBCO F617-0;
Globe NIBCO F718-B;
Angle NIBCO F818-B
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。
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.
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)
ACCEPTABLE VALVES:
Class 125 NIBCO T413-Y (threaded); S413-Y (solder)
通径DN65以上的止回阀应该采用旋启式结构,并按照美国阀门和管件制造商标准协会MSS-SP71标准制造,125磅级,法兰连接,符合美国材料试验协会ASTM
A 126级别B标准的铸铁阀体和青铜阀内件,不含石棉的衬垫。也可以采用平板式结构,配置不锈钢弹簧,青铜阀瓣,橡胶阀座,符合美国材料试验协会ASTM
A 126级别B标准的铸铁阀体,或A 48标准的125磅级或150磅级法兰。
2 1/2" and larger shall be swing-type manufactured
in accordance with MSS-SP71, Class 125, flanged ASTM A 126 Class B cast
iron body with bronze trim, non-asbestos gasket. Or wafer-style with stainless
steel spring, bronze disc plates, rubber seat, body of cast iron ASTM
A 126 Class B or A 48 for use with Class 125/150 flanges.
可采用的阀门:
旋启式美国尼伯科F-918-B止回阀
弹簧执行机构平板式美国尼伯科W-920-W或KW-900-W止回阀,或外置手柄和弹簧的W-910-W旋启式止回阀
ACCEPTABLE VALVES:
Swing-type NIBCO F918-B
Spring-actuated wafer-type NIBCO W920-W or KW900-W or W910-W
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