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類型的閥門，區別在它的關閉件是個閥體，閥體繞閥體中心線作旋轉來達到開啟、關閉的一種閥門。  閘閥在管路中主要用來做切斷、分配和改變介質的流動方向。真空截止閥的工作原理是靠旋轉閥戀來使閥門暢通或閉塞。閘閥開關輕便，體積小，可以做成很大口徑，密封可靠，結構  簡單，維修方便，密封面與球面常在閉合狀態，不易被介質沖蝕，在各行業得到廣泛的應用。主要性能規范  Chief property and specification·焊接式真空閘閥-試驗壓力  Test pressure 公稱壓力
PN/MPa
Nominal
pressure試驗壓力/MPa Seal test 殼體強度試驗
Shellslrenght test上密封試驗
Back Seal test密封試驗
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 產品類型
Product
calssification適用介質
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膨脹復合石墨
Expanding
compound
graphite優質碳鋼
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