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  冷凝器和冷却水系统阀门选型
CONDENSER AND CHILLED WATER SPECIFICATIONS

美国尼必可有限公司

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:
  美国尼必可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:
  美国尼必可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:
  美国尼必可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:
  美国尼必可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磅级美国尼必可T-124闸阀(螺纹)
  150磅级美国尼必可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磅级美国尼必可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磅级美国尼必可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磅级美国尼必可T-413-Y止回阀(螺纹); S-413-Y止回阀(焊接)
  150磅级美国尼必可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)

 

通径DN65以上的管线控制阀
LINE CONTROL VALVES 2 1/2” AND LARGER

  蝶阀:
  BUTTERFLY VALVES:

  这类阀门应该是凸耳或国际管道标准I.P.S.管状连接端口阀体,并按照美国阀门和管件制造商标准化协会MSS-SP67标准制造;通径DN50~DN300额定工作压力是200 psi非冲击冷水,DN350以上是150 psi。用于保温隔热绝缘的阀体具有2英寸的加长管径,材质是铸铁或球墨铸铁。蝶板材质是铝青铜合金,配置三元乙丙橡胶阀座和密封;或三元乙丙橡胶涂层蝶板,配置聚合物涂层阀体。阀杆应该是400系列不锈钢,不能将阀杆暴露在蝶板紧固件上。通径DN65至DN150应该配置具有10个位置节流板的操作手柄;通径DN200以上的蝶阀应该配置齿轮操作机构。凸耳结构和管状结构蝶阀应该能够用作隔断阀,而且不需要下游法兰也可以在全压力下用在管道终端。
  Valves shall be lug or I.P.S. grooved body style manufactured in accordance with MSS-SP67; 2"-12" rated at least 200 psi non-shock cold water working pressure, 14" and larger rated at 150 psi. Body to have 2" extended neck for insulating and to be cast iron or ductile iron. Valve to have aluminum bronze alloy disc with EPDM rubber seat and seals; or EPDM rubber encapsulated disc with polymer-coated body. Stem shall be 400 series stainless steel and shall not have exposed stem to disc fasteners. sizes 2 1/2"-6" shall be lever operated with 10-position throttling plate; sizes 8" and larger shall have gear operators. Lug-style and grooved style shall be capable for use as isolation valves and recommended by manufacturer for dead-end service at full pressure without the need for downstream flanges.
  可采用的阀门:
  凸耳阀体,铝青铜蝶板的美国尼必可LD2000-3蝶阀(手柄操作机构);LD2000-5蝶阀(齿轮操作机构);LD1000-5蝶阀(齿轮操作机构),通径DN350以上。
  管状阀体,橡胶涂层蝶板的美国尼必可GD4765-3蝶阀(手柄操作机构);GD4765-5蝶阀(齿轮操作机构)
  ACCEPTABLE VALVES:
  Lug body, aluminum bronze disc NIBCO LD2000-3 (lever operator); LD2000-5 (gear operator); LD1000-5 (gear operator) 14" and larger
  Grooved body, rubber-coated disc NIBCO GD4765-3 (lever operator); GD4765-5 (gear operator)

  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标准铸铁,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:
  美国尼必可F-617-O闸阀
  美国尼必可F-718-B截止阀
  美国尼必可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标准的或A 48标准的铸铁阀体,配置125磅级或150磅级法兰。弹簧执行机构止回阀用于管道排放。外置操作手柄和弹簧执行机构的旋启式止回阀用于污水坑、排污和雨水排泄管道。
  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. Spring-actuated valve to be used on pump discharge. Swing check with outside lever and spring to be used on sump, sewage and storm drain lines.
  可采用的阀门:
  旋启式美国尼必可F-918-B止回阀
  弹簧执行机构平板式美国尼必可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,或配置重力拉杆的美国尼必可F-918-BL&S或F-918-BLW止回阀
  ACCEPTABLE VALVES:
  Swing-type NIBCO F918-B
  Spring-actuated wafer-type NIBCO W920-W or KW900-W or W910-W Swing-type with outside lever and spring or weight, NIBCO F918-BL&S or F918-BLW

  流量平衡阀门:
  CIRCUIT BALANCING VALVES:

  用于热水和冷水管道系统的通径DN15至DN50流量平衡阀应该以美国尼必可型号1710为基础,而通径DN50至DN300应该以美国尼必可型号737为基础。通径DN15至DN50阀门的材质应该是抗失锌现象的黄铜或青铜。通径DN50至DN300阀门的材质是铸铁,配置美国国家标准化组织(ANSI)125磅级/150磅级法兰或管状连接端口。对于需要精确调节和控制流量的场合,所采用的阀门应该是截止阀结构,压力-温度等级为121oC,175 psi时采用铸铁材质,压力-温度等级为121oC,240 psi时采用青铜材质。每个阀门应该配置两个测试端口,内置止回阀和保护阀盖。所有流量平衡阀均配置可视位置读数指示器,并内置操作位置记忆装置,用于重复调节和控制。
  Valves for heating and chilled water service shall be based on NIBCO Figure 1710, 1/2" to 2" and NIBCO Figure 737 2" to 12". 1/2" to 2" valves shall be constructed of dezincification resistant brass or bronze alloy. 2" to 12" valves will be constructed of iron with ANSI Class 125/150 flanged or grooved ends. All valves shall be globe style for precise regulation and control and rated 175 psi for Iron and 240psi for Bronze at 250°F. Each valve shall have two metering/test ports with internal check valve and protective caps. All valves must be equipped with visual position readout and memory stop for repeatable regulation and control.
  可采用的阀门
  美国尼必可T-1710流量平衡阀(螺纹);S-1710流量平衡阀(焊接)
  美国尼必可F-737流量平衡阀(法兰);G-737(管状)
  ACCEPTABLE VALVES:
  NIBCO T1710 (threaded); S1710 (solder)
  NIBCO F737 (flanged); G737 (grooved)

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