NKZ61H/Z64H焊接式真空閘閥焊接式真空閘閥和真空截止閥是同屬一個(gè)類型的閥門(mén)，區(qū)別在它的關(guān)閉件是個(gè)閥體，閥體繞閥體中心線作旋轉(zhuǎn)來(lái)達(dá)到開(kāi)啟、關(guān)閉的一種閥門(mén)。  閘閥在管路中主要用來(lái)做切斷、分配和改變介質(zhì)的流動(dòng)方向。真空截止閥的工作原理是靠旋轉(zhuǎn)閥戀來(lái)使閥門(mén)暢通或閉塞。閘閥開(kāi)關(guān)輕便，體積小，可以做成很大口徑，密封可靠，結(jié)構(gòu)  簡(jiǎn)單，維修方便，密封面與球面常在閉合狀態(tài)，不易被介質(zhì)沖蝕，在各行業(yè)得到廣泛的應(yīng)用。主要性能規(guī)范  Chief property and specification·焊接式真空閘閥-試驗(yàn)壓力  Test pressure 公稱壓力
PN/MPa
Nominal
pressure試驗(yàn)壓力/MPa Seal test 殼體強(qiáng)度試驗(yàn)
Shellslrenght test上密封試驗(yàn)
Back Seal test密封試驗(yàn)
Seat test 2.53.82.82.8 4.O6.04.44.4 6.49.6707.O 1O.O15O11.O11.O ·焊接式真空閘閥-使用范圍  Applicable 產(chǎn)品類型
Product
calssification適用介質(zhì)
Applicable medium適用溫度/℃
Applicable temperature NKZ61H
NKZ64H H-C型
NKZ964H H-C型
NKZ961H水、蒸汽、空氣
Water，Steam，Air≤425 NKZ61H
NKZ64H Y-I型
NKZ964H Y-I型
NKZ961H水、蒸汽、空氣
Water，Steam，Air≤550 ·焊接式真空閘閥-主要零部件材料  Materials for main parts 零件名稱
Part name閥體、閥蓋
Body Bonnet閥桿
Valve stem閘板
Wedge gate密封面
Sealing face閥桿螺母
Valve Yoke nut填料
Parking緊固件
Fastener NKZ61H
NKZ64H H-C型
NKZ964H H-C型
NKZ961HWCB2Crl325H：合金鋼
H：alloysteel鋁青銅
Albronze膨脹復(fù)合石墨
Expanding
compound
graphite優(yōu)質(zhì)碳鋼
High-grade
carbon steel NKZ61H
NKZ64H Y-I型
NKZ964H Y-I型
NKZ961H鉻鉬鋼
Cr.Mo steel20CrlMo1VA鉻鉬鋼
Cr.Mo steelY：硬質(zhì)合金
Y：carbide alloy鉻鉬鋼
Cr.Mo steel

·焊接式真空閘閥-主要尺寸及重量  Main dimensions and weight 公稱通徑
DN/mm
Nominal
diamecer公稱壓力
PN/MPa
Nominal
pressure主要外形尺寸和連接尺寸/mm
Main external andconnecting dimensions重量/kg
Weight LHDD0∝W 502.5250345644937^o30‘25024 65270395826637^o30‘25036 80280425957837^o30‘30052 10030051O11710037^o30‘30067 12532557014412537^o30‘35095 15035072517215137^o30‘350135 20040082022320137^o30‘400210 25045089027825337^o30‘450300 300500107033030337^o30‘550395 350550132038235137^o30‘650530 400600145043239837^o30‘750685 450650156048445037^o30‘750906 500700172053549837^o30‘8501130 600809188063860037^o30‘9001387 700900208373870037^o30‘9501894 8001OOO259084080037^o30‘10002621 504.0250345644837^o30‘30030 65270395826637^o30‘30042 80280425957837^o30‘35057 10030051O1171OO37^o30‘35075 12532557014412537^o30‘400105 15035072517215137^o30‘400150 20040082022319937^o30‘450232 25045089027825137^o30‘550330 300500107033030137^o30‘650430 350550132038234937^o30‘750570 400600145043239637^o30‘850730 506.4250350644837^o30‘30034 65280405826537^o30‘30048 80310435957637^o30‘35065 1003505151179837^o30‘40081 12540058015012837^o30‘400112 15045073517214937^o30‘450161 20055083522319737^o30‘550255 25065090527824537^o30‘650390 300750108033029337^o30‘750515 350850134038234137^o30‘800695 400950146043238637^o30‘900885 501O.0250350644837^o30‘30037 65280405826337^o30‘30052 80310435957