Summarize
SZDLP、SZDLM polarity formula
Electric Single-seat 、 socket adjusting valve , accept
monitoring instrument Comes the direct current signal, changes is moved the
medium current capacity, makes the accusation craft parameter to maintain at
the given value. Widely applies in the electric power, the metallurgy, the
chemical industry, the petroleum, lightly spins, industry sector′s and so on
the drugs This series product nominal size by 20 to 300mm, the nominal pressure
has 1.6, 4.0, 6.4MPa,Accepts the signal
is 0-10mA.DC or 4~20mA.DC,Application temperature scope by 40℃-450℃.In which
electrically operated single-seat adjustment
valve is suitable for the differential pressure is small, the medium viscosity
is big or has the pellet impurity situation slightly; The electrically operated
sleeve regulating valve is suitable for the differential pressure is big also
the spillage big situation.
Main
parts materials
Body 、Bonnet:HT200、ZG230~450、ZG1Cr18Ni9Ti
spool、seat:1Cr18Ni9Ti、stellite resurfacing welding
Fills in the core:teflon 、flexible
graphite 、stainless steel bellows
handspike、bush:2Cr13
shim : rubber asbestos plate、1Cr18Ni9Ti、asbestos spirotallic gasket
Main technical parameter
DN
(mm)
(seat diameter dn)
|
20
|
25
|
32
|
40
|
50
|
65
|
80
|
100
|
125
|
150
|
200
|
250
|
300
|
(10)
|
(12)
|
(15)
|
(20)
|
rated flow coefficient Kv
|
straight line
|
1.8
|
2.8
|
4.4
|
6.9
|
11
|
17.6
|
27.5
|
44
|
69
|
110
|
176
|
275
|
440
|
690
|
1100
|
1760
|
parabola
|
1.6
|
2.5
|
4
|
6.3
|
10
|
16
|
25
|
40
|
63
|
100
|
160
|
250
|
400
|
630
|
1000
|
1600
|
rated stuoke L (mm)
|
10
|
16
|
25
|
40
|
60
|
100
|
PN(MPa)
|
1.6、4.0、6.4
|
Inherent Flow characteristics
|
straight line 、 parabola
|
Inherent adjustable ratioR
|
50:1
|
Permission spillage
|
concourse
|
hard Seal :Ⅳ Level 、 soft Seal :Ⅵ Level
|
branch
|
hard Seal :Ⅱ Level 、 soft Seal :Ⅵ Level
|
Working temperature t (℃)
|
-20~200、-40~250、-40~450、-60~450
|
Signal scope (mA.DC)
|
0~10、4~20
|
supplyvoltage
|
220V、50Hz
|
mode of action
|
When breakdown: The entire pass, all opens, the
self-locking position
|
Note: * This product performance index implements GB/T4213-92.