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E-mail
76228885@qq.com
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Phone
15821339995
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Address
Jinshan Industrial Zone, Shanghai
Product Categories
Shanghai Shuangheng Valve Manufacturing Co., Ltd
YFA72W Vacuum Negative Pressure Safety Valve
NegotiableUpdate on 04/02
- Model
- Nature of the Manufacturer
- Producers
- Product Category
- Place of Origin
Overview
YFA72W vacuum negative pressure safety valve is suitable for negative pressure systems with temperatures ≤ 200 ℃. When the negative pressure inside the container exceeds the allowable value, the valve automatically opens and sucks in air; When the negative pressure inside the container reaches the allowable value, the valve automatically closes to protect the equipment and system. Installed in a normal non negative pressure system, when the release valve of the container and system is not opened and negative pressure is generated, this valve automatically opens. Working temperature ≤ 200 ℃ Suitable for YFA72W-10P medium Suitable for nitric acid medium
Product Details
YFA72W vacuum negative pressure safety valve is suitable for negative pressure systems with temperatures ≤ 200 ℃. When the negative pressure inside the container exceeds the allowable value, the valve automatically opens and sucks in air; When the negative pressure inside the container reaches the allowable value, the valve automatically closes to protect the equipment and system. Installed in a normal non negative pressure system, when the release valve of the container and system is not opened and negative pressure is generated, this valve automatically opens.
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operation temperature
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≤200℃
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Applicable Medium
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YFA72W-10P is suitable for nitric acid media
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YFA72W-10R is suitable for acetic acid media
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Material for main parts
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NO.
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Part name
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YFA72W-P material
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YFA72W-R material
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1
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valve body
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ZG1Cr18Ni9Ti
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ZG1Cr18Ni12Mo2Ti
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2
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valve seat
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1Cr18Ni9Ti
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ZG1Cr18Ni12Mo2Ti
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3
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Adjusting ring
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1Cr18Ni9Ti
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1Cr18Ni12Mo2Ti
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4
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valve cover
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ZG1Cr18Ni9Ti
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1Cr18Ni9Ti
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5
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valve stem
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1Cr18Ni9Ti
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1Cr18Ni12Mo2Ti
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6
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spring
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50CrVA
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50CrVA coated fluoroplastic
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Main overall dimensions
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Nominal Diameter
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size
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||||||
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D
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D1
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D2
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Z-ød
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b
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f1
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H
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|
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15
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95
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65
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45
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4-14
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14
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2
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110
|
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20
|
105
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75
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55
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4-14
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16
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2
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130
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25
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115
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85
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65
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4-14
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16
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2
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150
|
|
32
|
140
|
100
|
78
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4-18
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18
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2
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180
|
|
40
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150
|
110
|
85
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4-18
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18
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3
|
200
|
|
50
|
165
|
125
|
100
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4-18
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20
|
3
|
221
|
|
80
|
200
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160
|
135
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4-18
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22
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3
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245
|
|
100
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220
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180
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155
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8-18
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22
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3
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253
|
|
125
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250
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210
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185
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8-18
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24
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3
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280
|
|
150
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285
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240
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210
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8-23
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24
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3
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329
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|
200
|
340
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295
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265
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8-23
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26
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3
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377
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250
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395
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350
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320
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12-23
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28
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3
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440
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