VIP member
Imported pneumatic flow control valve
Imported pneumatic flow control valve
Product details
MillerPneumatic flow control valvesummary:
The imported pneumatic flow control valve controls the opening of the valve through the air source to adjust the outlet flow rate of the valve
Imported pneumatic flow control valve, consisting of a pneumatic diaphragm multi spring actuator and a double seat Valve composition.
Replacing old-fashioned actuators with new multi spring actuators has the advantages of low height, light weight, and easy installation and maintenance.
The double seat valve has two valve core balls, one on the upper and one on the lower, and the thrust exerted by the fluid on the upper and lower valve cores, Its direction is opposite but its magnitude is close, the unbalanced force is small, the allowable pressure difference is large, and the rated flow coefficient It is larger than a single seat valve of the same caliber, but the leakage of this valve is greater than that of a single seat valve.
Suitable for clean media with less strict requirements for leakage and a large pressure difference before and after the valve.
Technical parameters and performance
valve body
|
type |
Straight through double seat cast ball valve |
|
Nominal Diameter |
25、32、40、50、65、80、100、125、150、200、250、 |
|
nominal pressure |
PN1.6、4.0、6.4MPa |
|
Flange standard |
JB/T79.1-94、79.2-94class |
|
material |
Cast steel（ZG230-450）Cast stainless steel（ZG1Cr18Ni9Ti、ZG1Cr18Ni12Mo2Ti）Wait, wait |
|
Bonnet |
Standard type-17～+230℃Heat dissipation type+230～+450℃Low temperature type-60～-196℃Bellows sealed type-40～+350℃ |
|
Cover type |
Bolt compression type |
|
filler |
VType PTFE packing, PTFE impregnated asbestos packing, asbestos textile packing, graphite packing |
|
structural style |
(See figure for details)1~Picture5） |
Valve components
|
SPOOL TYPE |
Double seat plunger type valve core |
|
Traffic characteristics |
Equal percentage characteristic and linear characteristic |
|
material |
Stainless steel（1Cr18Ni9Ti、1Cr18Ni12Mo2Ti、17-4PH、9Cr18、316L）Stainless steel overlay with Stellite alloy |
Valve action type
air-to-close(B)— Valve position opens when gas is lost(FO)Air opening type(K)— When the gas is lost, the valve position is closed(FC)
attachment
Positioner, air filter pressure reducer, holding valve, travel switch, valve position transmitter, handwheel mechanism, etc
performance
|
project |
Without locator |
Equipped with locator |
||
|
Basic error% |
±5.0 |
±1.0 |
||
|
return difference% |
≤3.0 |
≤1.0 |
||
|
Dead zone% |
≤3.0 |
≤0.4 |
||
|
Always Spread% |
air to open |
Starting point |
±2.5 |
±1.0 |
|
End |
±5.0 |
±1.0 |
||
|
air to close |
Starting point |
±5.0 |
±1.0 |
|
|
End |
±2.5 |
±1.0 |
||
|
Rated travel deviation% |
≤2.5 |
|||
|
Leakage amountl/h |
0.01%×Rated capacity of valve |
|||
|
Adjustable rangeR |
30:01 |
|||
rated flow coefficientKvRated stroke, equipped actuator model, allowable pressure difference
|
Nominal DiameterDN(mm) |
25 |
32 |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
250 |
300 |
|
rated flow coefficientKv |
10 |
16 |
25 |
40 |
72 |
100 |
160 |
250 |
400 |
630 |
1000 |
1600 |
|
rated travelL(mm) |
16 |
25 |
40 |
60 |
100 |
|||||||
Online inquiry
-
Contacts
-
Company
-
Telephone
-
Email
-
WeChat
-
Verification Code
-
Message Content
-