SZXP new series Pneumatic film Throughway
Single-seat adjusting valve Uses goes against the guidance structure, uses for
parts the multi-spring implementing agency. Has the structure compact, the
weight light, the movement keen, the sufficient body channel assumes the S
streamline form, the pressure drop loses, the valve capacity slightly big, the
discharge characteristic precise, merits and so on knocked-down and assemble
convenience. Widely applies in medium and so on accuracy control gas, liquid,
the craft parameter like pressure, the current capacity, the temperature, the
fluid position maintains at the given value。Is suitable specially around the permission spillage small valve the
differential pressure not big work situation.
This series product standard type,
adjustment cut-off, corrugated pipe seal, clamp cover heat preservation and so
on many kinds of varieties. The product nominal pressure rank has PN10, 16, 40,
64; Valve chest caliber scope DN20~200. Flows the body temperature suitably by
- 200℃~560℃ the scope in many kinds of scales. The spillage standard has IV
level or VI level. The discharge characteristic is the linearity or and so on
the percentages. Many and varied variety specification may supply the choice.
Main parts
materials
Main parts materials：
Body 、 Bonnet ：HT200，ZG230-450，ZG1Cr18Ni9Ti
spool 、seat ：1Cr18Ni9Ti， stellite resurfacing welding
soft Seal spool： enhancement teflon
packing： teflon ，flexible
graphite
bellows ：1Cr18Ni9Ti
shim:rubber asbestos plate 、10、1Cr18Ni9Ti、 asbestos spirotallic gasket
Membrane lid: A3
corrugated diaphragm: Ding Qingxiang glue press enhancement polyester fiber
fabric
spring: 60SIMN
valve lever, throwout lever: 2Cr13, 1Cr18Ni9Ti
bushing: 2Cr13
Main technical
parameter
|
DN（mm）
|
20
|
25
|
32
|
40
|
50
|
65
|
80
|
100
|
125
|
150
|
200
|
|
(10)
|
(12)
|
(15)
|
(20)
|
|
rated flow coefficients
KV
|
straight line
|
1.8
|
2.8
|
4.4
|
6.9
|
11
|
17.6
|
27.5
|
44
|
69
|
110
|
176
|
275
|
440
|
690
|
|
percentage
|
1.6
|
2.5
|
4.0
|
6.3
|
10
|
16
|
25
|
40
|
63
|
100
|
160
|
250
|
400
|
630
|
|
rated stuoke L（mm）
|
16
|
25
|
40
|
60
|
|
Diaphragm active surfaceAe（cm2）
|
280
|
400
|
600
|
1000
|
|
Signal scope Pr(KPa)
|
20~100、40~200
|
|
Ps(MPa)
|
0.14~0.4
|
|
inherent Flow characteristics
|
straight line 、Percentages
|
|
Inherent adjustable ratio
|
50
|
|
Permission spillage
|
hard seat ：IV Level （10
-4 valve rated capacity ） soft seat ：VI Level
|
|
PN（MPa）
|
1.0、1.6、4.0、6.4
|
|
Working temperature t
（℃）
|
Normal temperature
|
-20~200、-40~240、-60~250
|
|
Radiation
|
-40~450、-60~450
|
|
High temperature
|
450~560
|
|
Low temperature
|
-60~-100、-100~-200、-200~-250
|
