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Water Seal Gate Valve

Products > Power station valve > Water Seal Gate Valve

Water Seal Gate Valve

Model: DSZ44H
Nominal diameter: DN50 ~ 800mm
Nominal pressure: PN0.6 ~ 1.6Mpa
Main material: carbon steel, alloy
Temperature: ≤550 ℃
Design Standard: API 600, ASME B16.34, DL / T 531, JB / T3595
Construction length: DL / T 531, ASME B16.10, GB / T 12221
Connection standards: DL / T 531, JB / T3595, ASME B16.25
Pressure test: API 598, GB / T 13927, JB / T 9092
Pressure - Temperature Rating: API 598, GB / T 13927, GB / T 26480, JB / T9092, JB / T3595
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First, the water seal valve product features

 1, the use of flange bolts connection, both ends of the branch pipe flange connection or butt welding connection. 
 2, Stuffing box is designed into a water seal structure, access to 0.6 ~ 1.6Mpa water filler, small friction, sealed, the system can be isolated from the atmosphere, to ensure good air tightness. 
 3, the opening and closing pieces of double gate with two-way flexible seal, open and close easily, sealed, good performance. 
 4, the stem by quenching and nitriding surface treatment, good corrosion resistance, scratch resistance and wear resistance. 
 5, the structure is simple, compact and reasonable, easy maintenance, long life, handsome in appearance. 
 6, the valve work must be fully open or fully closed position, can not do with the control valve.
 

Second, the main components of water seal valve materials

Shell materialSuitable mediaApplicable temperature ℃
Carbon steel (C)Water, steam, oil≤425
Chrome Nickel Stainless Steel (P)Nitric acids≤200
Chromium nickel molybdenum stainless steel (R)Acetic acid≤200
Chrome-molybdenum steel (I)Water, steam, oil≤550

 

Part Namematerial
BodyWCBZG1Cr5MoZG1Cr18Ni9TiZG1Cr18Ni12Mo2Ti
Valve plateWCB1Cr18Ni9Ti1Cr18Ni9Ti1Cr18Ni12Mo2Ti
capWCB / 25ZG1Cr5MoZG1Cr18Ni9TiZG1Cr18Ni12Mo2Ti
Valve stem2Cr131Cr18Ni9Ti1Cr18Ni9Ti1Cr18Ni12Mo2Ti
fillerVacuum combination filler
Stem nutAluminum bronze
HandwheelMalleable iron

 

Third, water seal gate valve main dimensions

Nominal pressuretest pressure
caseSealed (water)Seal (gas)Sealed (water)
1.62.41.80.61.8

 

Nominal pressure 1.6 MPa

DNL1L2DD1D2bfzdDnABHH1DORFBW
502502161601251001634-184957663984582502824
652702411801451201834-186673834385142504035
802802831951601352038-187889964565393005550
1003003052151801552038-18961081175146143007566
1253253812452101852238-1812113314460075035011096
1503504032802402102438-23146159172680825350150133
20040041933529526526312-232022192228001000400223203
25045045740535532030312-252542732788401080450325295
30050050246041037530412-253033253309901280450430395
35055057252047043534416-2535137738211351470600570510
40060061058052548536416-3039842643214101815650740665
45065066064058554540420-3045048048414751925700955860
50070071170565060844420-345015305351660217075011951070
60080081384077071848520-416026306381950257080014551295
70090091491084078850524-416927207382165287085021101830
8001000965102095089852521-417928208402595339595026302390


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