Electric water seal gate valve

Product overview

Product model: DSZ964H

Nominal diameter: DN50~4600mm

Nominal pressure: PN1.0~10.0MPa

Main material: carbon steel, alloy steel

Applicable temperature: ≤540℃ or ≤425℃

Applicable medium: water, steam, oil, non-corrosive gas

Design standard: GB/T12234

Structure length: GB/T12221

Connection standard: JB79, GB/T9113

Pressure test: JB/T9092, GB/T13927


Product Detail

Product description

        Electric water-sealed gate valve is suitable for opening and closing devices on pipelines with nominal pressure ≤100MPa, working temperature ≤425°C, and working medium of water, steam, oil and non-corrosive gas. The electric water seal gate valve is especially suitable for the vacuum condensing system of the steam turbine of the thermal power plant.


Features

1. The valve cover packing chamber of this product has a water-tight structure. When water with a pressure of 0.6 to 1.0 MPa is introduced into the interface, the system can be isolated from the atmosphere and ensure that the system has a good air seal.

2. The DS/Z series adopts double gate two-way elastic sealing, which is flexible, fast and reliable in opening and closing.

3. The product structure is simple, compact and reasonable, convenient for maintenance and long service life.

4. Used as an opening and closing device on the pipeline, it must be in a fully open or fully closed state, and must not be used to adjust the flow.

5. There are two types of valve connection methods: flange and welding, and the driving method is electric.


Main performance specifications

Performance testNominal pressure (MPa)
Shell strength test1.01.62.54.06.410.0
Sealing test1.52.43.86.09.615.0
Upper seal test1.11.82.84.47.011.0
Hermetic test1.11.82.84.47.011.0
Product TypeApplicable temperature (℃)Applicable medium
Carbon steel type≤425Water, steam, oil, non-corrosive gas
Alloy type≤540


Material of main parts

1BodyWCB、ZG1Cr5Mo、ZG1Cr18Ni9Ti、ZG1Cr18Ni12Mo2Ti
2GateWCB、1Cr18Ni9Ti、1Cr18Ni12Mo2Ti
3GasketPTFE, metal graphite spiral wound gasket
4CapWCB/25、ZG1Cr5Mo、ZG1Cr18Ni9Ti、ZG1Cr18Ni12Mo2Ti
5PackingTeflon, flexible graphite, oil-impregnated asbestos packing
6Packing gland25、2Cr13、1Cr18Ni9Ti、1Cr18Ni12Mo2Ti
7Stem2Cr13、1Cr18Ni9Ti、1Cr18Ni12Mo2Ti
8BracketHT200、WCB、1Cr18Ni9Ti
9Electric ActuatorHousing(HT200、WCB)


电动水封闸阀(图1)

Main external connection size

Nominal diameter

DN / mm

LαHD0PN1.6MPaPN2.5MPa
DD1DensoDD1Denso
5025037°30'3342505850DZW106449DZW10
6527037°30'4392507565DZW108267DZW10
8028037°30'4953009179DZW109577DZW10
10030037°30'57535011097DZW15117101DZW15
12532537°30'587350136121DZW15144126DZW20I
15035037°30'607350163146DZW20I172158DZW20I
20040037°30'740400223202DZW20223202DZW30
25045037°30'863400278254DZW30278254DZW30
30050037°30'990400330305DZW45330305DZW45
35055037°30'1137500382352DZW60382352DZW60
40060037°30'1523500432399DZW6043239gDZW60
45065037°30'1618600485451DZW90485451DZW90
50070037°30'1657600535501DZW120535499DZW120
60080037°30'1746700636601DZW180636599DZW180

Note: PN1.6 (16) valve is allowed to be used as PN1.0 (10) pressure selection.


Main external connection size

Nominal diameter

DN / mm

LDαPN4.0MPaPN6.4MPaPN10.0MPa
D1HD0DensoD1HD0DensoD1HD0Denso
502506437°30'49345300DZW1050350300DZW1049350300DZW10
652708337°30'67441300DZW1066447300DZW1564447300DZW15
802809637°30'79495350DZW1577499350DZW20I75499350DZW20I
10030011737°30'101575350DZW20I99582400DZW20I87582400DZW30I
12532514437°30'126587400DZW20I129590400DZW30125590400DZW30
15035017237°30'152607400DZW30150611450DZW30145611450DZW45
20040022337°30'200740450DZW30198745550DZW45190747550DZW60
25045027837°30'252863550DZW45246867650DZW60236869650DZW90I
30050033037°30'3021008650DZW602941008750DZW90I2821013750DZW120I
35055038237°30'3501142750DZW90I3421148800DZW120I3341148850DZW180
40065043237°30'3971527850DZW1203871531900DZW1803771533950DZW250

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