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Self Operated Control Valve
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ZZV/ZZC Micropressure Regulator

It doesn’t require any external energy, but use the pressure of Medium to operate itself, so that pressure can be maintained at a constant value. For example, in the industrial furnace gas combustion systems, it is always used to control two types of fuel mixture ratio to achieve optimum combustion conditions. It also can be used as gas, natural gas, liquefied petroleum gas, ammonia, nitrogen, oxygen and other industrial gases in decompression, micro-pressure differential pressure regulation system. What ‘s more, it also is used for hydrogen-cooled generator seal oil system to control the pressure difference between oil and hydrogen, in order to ensure reliable seal.
Detail
Main technical parameters
Body size（mm）
20
25
32
40
50
65
80
100
Rated flow Coefficient KV
ZZCP/ZZVP
5
8
12.5
20
32
50
80
125
ZZCN
 
 
 
 
53
83
 
 
Rated travel （mm）
5
6
10
15
20
Nominal pressure (MPa）
0.10         1.0
decompression range（KPa）
 
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     88～100
Working temperature（0C）
≤80
precision range ability（%）
≤10
Seat leakage（l/h）
ZZCP/ZZVP
Metal seat: 10-4×the rating capability of valve(IV) Soft seat :VI

BUYER GUIDE
Data:
Type of valve, Valve size, Purpose
Body size, Nominal pressure
Working temperature
Input pressure, outlet pressure
Fluid name, Flux of medium, Fluid state
Bonnet type,
Material of Body and seat
Accessory:
Flange standard, Flange interval
Other