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冷凝器和冷卻水係統閥門選型

作者:AM8亚美来源:[AM8亚美公司]访问:606时间:2019-11-13

通徑DN65以下管線控製閥LINE CONTROL VALVES 2 1/2" AND SMALLER

  球閥:  BALL VALVES:

  這類閥門的額定安全工作壓力為150 psi,非衝擊冷水工作壓力是600 psi,兩件式鑄青銅閥體,聚四氟乙烯閥座,標準流道,分離式包裝螺母,配置可調節閥杆填料,防吹出閥杆和鍍鉻黃銅/青銅球體。在需要關注壓降的地方,應采用不縮徑全流道球閥或類似結構的閥門。閥門連接端口應當具有足夠深度的美國國家標準協會ANSI螺紋,或加長焊接端口,並按照美國閥門和管件製造商標準化協會MSS-SP110標準製造 。  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  可采用的標準流道閥門:  美國尼伯科T-580-70球閥(螺紋);S-580-70球閥(焊接)   ACCEPTABLE VALVES STANDARD PORT:  NIBCO T580-70 (threaded); S580-70 (solder)  可采用的不縮徑全流道閥門:  美國尼伯科T-585-70(螺紋);S-585-70(焊接)   ACCEPTABLE VALVES FULL PORT:  NIBCO T585-70 (threaded); S585-70 (solder)  注:假如管道需要保溫隔熱或盡緣,那麽球閥就要配置耐熱盡緣材料的2英寸加長手柄,還需要配置保護套筒,如許在操縱閥門時不會破壞蒸汽密封或保溫隔熱盡緣層。假如利用在保溫隔熱盡緣環境,需要包括可全程調節的操縱點記憶功能。  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.  可采用的標準流道閥門:  美國尼伯科T-580-70NS球閥(螺紋);S-580-70NS球閥(焊接)  ACCEPTABLE VALVES STANDARD PORT:  NIBCO T580-70NS (threaded); S580-70NS (solder)  可采用的不縮徑全流道閥門:  美國尼伯科T-585-70NS球閥(螺紋);S-585-70NS球閥(焊接)  ACCEPTABLE VALVES FULL PORT:  NIBCO T585-70NS (threaded); S585-70NS (solder)

  閘閥:  GATE VALVES:

  明杆:這類閥門工作壓力是125磅級,明杆,管接頭式閥蓋,實心楔板,並按照美國閥門和管件製造商標準化協會MSS-SP 80標準製造。閥體,閥蓋和楔板材質符合美國材料試驗協會ASTM B 62標準青銅。閥杆材質是符合美國材料試驗協會ASTM B 371標準抗失鋅現象的矽青銅,或B 99低鋅合金 ,不含石棉的填料,和可鍛或球墨鑄鐵手輪。假如工作壓力比較高 ,接近150 psi,則應當采用150磅級管接頭閥蓋或類似結構的閥門。閥門連接方式應當是螺紋或焊接。  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.  可采用的閥門 :  125磅級美國尼伯科T-124閘閥(螺紋)  150磅級美國尼伯科T-134閘閥(螺紋);S-134閘閥(焊接)   ACCEPTABLE VALVES:  Class 125 NIBCO T124 (threaded);  Class 150 NIBCO T134 (threaded); S134 (solder)

  截止閥/角閥:  GLOBE/ANGLE VALVES:

  這類閥門工作壓力是125磅級,並按照美國閥門和管件製造標準化協會MSS-SP 80標準製造;閥體和閥蓋材質是符合美國材料試驗協會ASTM B 62標準的青銅。閥杆材質是符合美國材料試驗協會ASTM B371標準的抗失鋅現象的矽青銅或B 99標準的低鋅合金 ,不含石棉的填料,聚四氟乙烯閥座閥瓣,可鍛或球墨鑄鐵手輪。假如工作壓力比較高,接近150 psi,則應當采用150磅級管接頭閥蓋或類似結構的閥門。閥門連接方式應當是螺紋或焊接。  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.  可采用的閥門 :  125磅級美國尼伯科T-211-Y截止閥/T-311-Y角閥(螺紋);S-211-Y截止閥/S-311-Y角閥(焊接)  150磅級美國尼伯科T-235-Y截止閥/T-335-Y角閥(螺紋);S-235-Y截止閥(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)

  止回閥:  CHECK VALVES:

  通徑DN65以下的止回閥應當采用Y型旋啟式結構 ,並按照美國閥門和管件製造商標準化協會MSS-SP80標準製造,工作壓力125磅級 ,符合美國材料試驗協會ASTM B 62標準的青銅閥體,配置聚四氟乙烯閥座閥瓣。假如工作壓力比較高,接近150 psi,則應當采用150磅級管接頭閥蓋或類似結構的閥門。閥門連接方式應當是螺紋或焊接。  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.  可采用的閥門:  125磅級美國尼伯科T-413-Y止回閥(螺紋); S-413-Y止回閥(焊接)  150磅級美國尼伯科T-433-Y止回閥(螺紋);S-433-Y止回閥(焊接)  ACCEPTABLE VALVES:  Class 125 NIBCO T413-Y (threaded); S413-Y (solder)  Class 150 NIBCO T433-Y (threaded); S433-Y (solder)

通徑DN65以上的管線控製閥LINE CONTROL VALVES 2 1/2” AND LARGER

  蝶閥:  BUTTERFLY VALVES:

  這類閥門應當是凸耳或國際管道標準I.P.S.管狀連接端口閥體,並按照美國閥門和管件製造商標準化協會MSS-SP67標準製造;通徑DN50~DN300額定工作壓力是200 psi非衝擊冷水,DN350以上是150 psi。用於保溫隔熱盡緣的閥體具有2英寸的加長管徑,材質是鑄鐵或球墨鑄鐵。蝶板材質是鋁青銅合金,配置三元乙丙橡膠閥座和密封;或三元乙丙橡膠塗層蝶板,配置聚合物塗層閥體。閥杆應當是400係列不鏽鋼,不能將閥杆暴露在蝶板緊固件上。通徑DN65至DN150應當配置具有10個位置節流板的操縱手柄;通徑DN200以上的蝶閥應當配置齒輪操縱機構。凸耳結構和管狀結構蝶閥應當能夠用作隔斷閥 ,而且不需要下遊法蘭也可以在全壓力下用在管道終端。  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 operato1頁

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