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Self Operated Control Valve
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ZZLP Self-Operated Flow Regulator

It is a kind of energy saving product, which use the temperature of Medium to control flow itself. It is widely used in urban heating systems and petroleum, chemical, metallurgy, light industry and other industrial sectors automatic control systems. This product can also be used for controlling non-corrosive (maximum temperature of 200℃) liquid, gas and steam and other media.
Detail
Main technical parameters
Body size（mm）
15
20
25
32
40
50
65
80
100
125
150
200
250
Rated flow coefficient (Kv)
3.2
5
8
12.5
20
32
50
80
125
160
320
450
630
Max flow within the Effective pressure（m3/h）
0.02MPa
1.5
2.5
3.5
5.5
9.0
14
22
36
55
70
140
200
280
0.05MPa
2.5
3.5
5.5
9.0
12
22
36
55
85
110
220
320
450
PN16 max differential pressure
△P（MPa）
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.5
1.5
1.2
1.0
1.0
PN40 max differential pressure
△P（MPa）
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
1.5
1.5
1.2
1.0
1.0
Max operating temperature
liquid：≤140℃； gas：≤80℃
seal pot：≤200℃
Seat leakage
4×10-4×the rating capability of valve
Test
10 blisters /min
20 blisters/min
40 blisters/min
Pressure balance element
Bellow type
Rolling Diaphragm
Nominal pressure
PN16（1.6MPa）        PN40（4.0MPa）
Body material
Cast steel
Plug material
stainless steel，soft seat: PFTE + 0Cr18Ni9
The working pressure
Nominal pressure         NOTICE :△P max
Flow range m3/P
medium：Water
△Ps
0.02MPa
0.15
～2
0.15
～2
0.15
～5
0.15
～5
1.5
～12
1.5
～12
2.5
～30
2.5
～30
4～70
4～70
 
 
 
△Ps
0.05MPa
0.15
～3
0.15
～3
0.2
～8
0.2
～8
2～20
2～20
4～50
4～50
6～100
6～100
 
 
 

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
Material of Body
Accessory:
Flange standard, Flange interval
Regulating pressure bars, O Packing
Other especial demand
Other