Product Introduction
ZZC and ZZV self operated differential (micro) pressure regulating valves are actuator products that do not require external energy. Can be used for nominal pressure PN01, PN10。 Differential (micro) pressure can be adjusted in sections. From 50mm W. C to 0.1MPa. It has a wide range of applications and can be used in industrial combustion furnace systems to control the flow ratio of two materials, such as gas and air, to achieve ideal combustion. Used for the sealing oil system of hydrogen cooled generator sets, controlling the pressure difference between the sealing oil and hydrogen gas to ensure reliable sealing. When the low-pressure end of the differential pressure valve is open to the atmosphere, it is called a micro pressure valve (negative pressure, end pressure, and zero force of the differential pressure valve).
Product Features
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·Adjust the set value without stopping production;
·No packing, there is no friction when the valve stem moves up and down, and the upper seal is absolutely reliable;
·The sensitive components of the actuator are extremely sensitive, and even tiny pressure changes can be detected;
·The valve body is in a four-way form, so K and B types can be used interchangeably.
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Specifications and technical parameters
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Main technical parameters and performance indicators (Table 1)
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Nominal diameter DN (mm)
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20
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25
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32
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40
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50
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65
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80
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100
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Rated flow rate
Coefficient Kv
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ZZCP/ZZVP
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8
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11
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20
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32
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50
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80
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100
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160
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ZZCN
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53
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83
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Rated stroke (mm)
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6
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8
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10
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15
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20
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Nominal pressure PN (MPa)
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0.10 1.0
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Differential pressure regulation range (kPa)
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0.5 ～ 5.5 5 ～ 10 9 ～ 14 13 ～ 19
18 ～ 24 22 ～ 28 26 ～ 33 31 ～ 38
36 ～ 44 42 ～ 51 49 ～ 58 56 ～ 66
64 ～ 78 76 ～ 90 8 ～ 100
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Medium temperature (℃)
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≤ 80
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Adjustment accuracy (%)
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≤ 10
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Allow leakage
Quantity (l/h)
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ZZCP/ZZVP
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10-4X valve rated capacity (Class IV)
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ZZCN
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5X10-3X valve rated capacity (Class II)
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Note: 1. The nominal pressure of ZZCP/ZZVP is 0.10MPa, and ZZCN is 1.0MPa
2. The differential pressure adjustment range of ZZCN is 36-44... 88-100kPa
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External dimensions and weight
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◆ Dimensions and Weight (Table 3)Company: mm
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DN
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20
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25
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32
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40
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50
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65
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80
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100
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A
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308
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394
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308
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394
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308
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394
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394
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394
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H
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ZZCP/ZZVP
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376
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465
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365
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445
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445
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490
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490
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510
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ZZCN
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536
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536
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L
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ZZCP/ZZVP
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150
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160
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180
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200
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230
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290
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310
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350
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ZZCN
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222
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222
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Weight G (Kg)
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12
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13
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15
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17
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20
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28
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38
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43
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Pressure pipe threaded joint
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M16X1.5
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Ordering Instructions
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Please provide the following information when placing an order:
Name and model of regulating valve
Nominal pressure Mpa
Nominal diameter (mm)
Rated flow coefficient (Kv)
Inherent flow characteristics
Media name
Working temperature and range
Operation mode of the whole machine
Pressure set point and adjustment range
Valve body, valve internals, and packing materials
Attached attachments
Other special requirements
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