NKZ41H真空隔離閘閥的詳細資料：本系列真空隔離閘閥連接形式分法蘭、焊接兩種，驅動方式有手動、電動兩種。該真空隔離閘閥適用于工作溫度≤425℃和≤550℃，工作介質為水、蒸汽或空氣的管路上，作為啟閉裝置；尤其適用于火電廠汽機冷凝和真空負壓系統，起真空隔離密封作用。結構特點1、設計了真空密封結構填料室，使系統與大氣隔離，具有良好的環保性能。2、選材考究，符全國內外相關標準，材料的全面質量高。3、密封副配對先進合理，提高了密封性能，使用壽命長。4、啟閉件采用平行閘板雙向彈性密封，摩擦力小，啟閉輕松，維修方便，密封可靠，性能優良。5、閥桿經調質及表面氮化處理，有良好的抗腐蝕性、抗擦傷性和耐磨性。6、法蘭墊片采用復合材料，膨脹系數大、氣密性能好、保證系統與大氣隔離可靠。真空隔離閘閥試驗壓力

公稱壓力
PN/MPa
Nominal
pressure試驗壓力/MPa Seal test 殼體強度試驗
Shell strength上密封試驗
Back seal test密封試驗
Seat test 1.01.51.11.1 1.62.41.81.8 2.53.82.82.8 4.06.O4.44.4 6.48.67.O7.0 1O.O15.O11.O11.O

真空隔離閘閥使用范圍

產品類型
Product type適用介質
Applicable medium適用溫度/℃
Applicable temperature NKZ41H
NKZ44H
NKZ944H-C型
NKZ941H水、蒸汽、空氣
Water，Steam，Air≤425 NKZ41H(Y)
NKZ44H(Y)-I型
NKZ944H(Y)-I型
NKZ941H(Y)水、蒸汽、空氣
Water，Steam，Air≤550

真空隔離閘閥主要零件材料

零件名稱
Part name閥體、閥蓋
Body Bonnet閥桿
Stem閘板
Wedge gate密封面
Sealing face閥桿螺母
Yokenut填料
Parking緊固件
Fastener NKZ44H
NKZ41H-C型
NKZ944H-C型
NKZ941HWCB2Crl325H：合金鋼
H：alloy steel鋁青銅
Albronze膨脹復合石墨
Expanding
comDound
graphite優質碳鋼
High-grade
carbon steel NKZ44
NKZ41Y-I型
NKZ944-I型
NKZ941鉻鉬鋼
Cr.Mo steel20CrlMo1VA
38CrMoAlA鉻鉬鋼
Cr.Mo steelY：硬質合金
Y：carbide alloy鉻鉬鋼
Cr.Mo steel

真空隔離閘閥主要尺寸及重量 

公稱通徑
DN/mm
Nominal
diameter公稱壓力
PN/MPa
Nominal
pressure主要外形尺寸和連接尺寸/mm
Main extemal and connecting dimensions閥門
重量
/kg
Valve
weight附法蘭尺寸/mm
Additional flange’s
dimensions LHDD1D2bfz-dWhD0Dn 501.O2503451601251OO1634-1825028454958 652703951801451201834-1825040486475 802804251951601352034-1830055507897 10030051O2151801552038-18300725296110 12532557024521O1852238-1835010660120136 15035072528024021O2438-1835014660145163 2004008203352952652638-1840022062202223 25045089039035032028312-2340031562225278 300500107044040036828312-2345039865303330 350550132050046042830416-2355053065351382 400600145056551548232416-2555069065398432 450650156061556553232420-2560087070460485 500700172067062058534420-25650108078500535 600800188078072568536520-30700135090600636 700900208589584080040524-30750195090690726 8001OOO2590101O95090544524-348002500106790826 501.62503451601251OO1634-1825028484958 652703951801451201834-1825040506475 802804251951601352038-1830058527891 10030051O2151801552038-18300755296110 12532557024521O1852238-1835011060120136 15035072528024021O2438-2335015060145163 20040082033529526526312-2340022362201223 25045089040535532030312-2545032668253278 300500107046041O37530312-2555043270303330 350550132052047043534416-2560057278351382 400600145058052548536416-3065074090398432 450650156064058554540420-3070095595450485 500700172070565060844420-34750119598500535