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DYC-JQ
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DYC-JQ
Electro-vacuum Differential Pressure Valve
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DYC-JQ electro-vacuum differential Pressure valve is a safely valve for mechanical vacuum pump. It is mounted at the intake nozzle of mechanical vacuum pump, synchronously opened and closed with the pump. In case that pump stops working or power supply is suddenly broken off, valve disc will be closed automatically under atmospheric pressure, to keep the vacuum system vacuum and the air charged into pump cavity, thus to prevent pump oil from reverse flow that can pollute the vacuum system. Applicable medium can be pure air or noncorrosive gases.
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Main Technical Performance
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Applicability
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105～10-2Pa
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Valve Leak Rate
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≤1.3×10-2Pa.L/S.
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Applicable Temperature
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-30～+50℃
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Coil Temperature Rise
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≤65℃
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Open-close Time
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≤3S
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Mains Voltage
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220V/50Hz
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Materials of Main Parts
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Body, bonnet and disc: carbon steel or aluminium alloy
Diaphragm: NBR and terylene silk
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CONSTRUCTION FIGHTS (mm)
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Overall and Connection Dimensions(mm)
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Looper flange(GB6070 Map1)
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Model
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DN
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Do
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D
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D2
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n-φc
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A
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H
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DYC-JQ50
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50
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90
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110
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55
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4-φ9
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70
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203
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DYC-JQ63
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63
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105
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130
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68
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4-φ9
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88
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226
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DYC-JQ80
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80
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125
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145
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85
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8-φ9
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98
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260
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DYC-JQ100
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100
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145
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165
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105
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8-φ9
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108
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282
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DYC-JQ160
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160
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200
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225
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165
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8-φ12
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158
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350
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Quick release flange(GB4982 Map2)
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Model
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DN
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D1
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D
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A
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H
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B
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DYC-JQ16
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16
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17.2
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30
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40
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160
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55
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DYC-JQ25
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25
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26.2
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40
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50
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170
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60
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DYC-JQ32
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32
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34.2
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55
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58
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179
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60
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DYC-JQ40
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40
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41.2
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55
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65
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187
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70
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DYC-JQ50
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50
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52.2
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75
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70
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203
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85
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Cube threaded connection(JB919 Map3)
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Model
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DN
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Do
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D2
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h
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B
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H
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n-d
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DYC-JQ16
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16
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42
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22
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28
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48
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148
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4-M5
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DYC-JQ25
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25
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55
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29
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35
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58
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155
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4-M6
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DYC-JQ32
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32
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64
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36
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40
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68
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160
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4-M6
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DYC-JQ40
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40
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70
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44
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44
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80
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166
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4-M6
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DYC-JQ50
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50
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90
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55
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56
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94
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189
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4-M8
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DYC-JQ65
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65
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105
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70
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65
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115
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205
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4-M8
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DYC-JQ80
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80
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125
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85
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75
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140
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250
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4-M8
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