Metal to Metal backed by
specially compounded Teflon.
Leakage
As per ANSI B16.104 - 1976
Trim (Spindle)
S.S. AISI 400/S.S. hard chrome
plated.
Stem Packing
Self adjusting, spring loaded
Teflon packing.
Characteristics
On-off, normally closed.
Working Fluid Pressure
Refer to table below.
Working Temperature
On steam - continuous 180°C
Intermittent 205°C.
ACTUATOR :
Spring return type, high duty Pneumatic Diaphragm
Actuator.
Diaphragm Cover
Sheet metal pressing.
Diaphragm
Nylon inserted Neoprene
Bottom Cover
High duty cast iron.
Yoke
ASTM. A216 WCB Investment
casted
Actuator Spring
IS 4454 Grade III, duly painted.
Actuator Working
2 to 3.5 bar.
Signal Pressure
(Main line pressure dependent).
Operating Cycles per hour
15mm, 20mm, 25mm upto 800
cy/hr. 35 mm and 50mm upto 300
cy/hr (tested on air, on other
fluids, this figure may vary).
Life Expectancy
Over one million cycles (lab tested in ideal condition).
Air Quality
Dry air or non corrosive gas.
Accessory
Air lock, Solenoid Valve, Filter
Regulator Gauge. Other
accessories available on
application.
Application
For control of air, water, oil, gas,
steam, hydraulic oil specially
where heavy duty operations are
called for, specially on tyre and
tube building presses, power
generation, atomic energy,
chemical & petrochemical plant,
PSA nitrogen system, air and
gas dryers, gas generators and
others.
Back Pressure
Refer to AVCON.
Instruction Manual
Refer to 1M 7412B.
SPECIFICATION TABLE
Catalogue
Number
Size
BSP(F)
Orifice
Size
Flow Factor
Kv
Maximum Working Pressure
Safe Working
Pressure
Actuator
Type
Air
Consumption
Air/Gas
Hot Water
Steam
Inch
mm
mm
M³ /hr.
Bar
Bar
Bar
bar
Litres/cy
7412B15
½
15
13
2.8
21
16
16
42
450A
0.150
7412B20
3/4
20
15
4.3
21
16
16
42
550A
0176
7412B25
1
25
19
7.0
21
16
16
42
550C
0.471
7412B35
1 ½
35
34
22.7
21
16
16
42
550D
0.966
7412B50
2
50
45
36.0
21
16
16
42
550D
0.966
OPERATION :
Valve Type 7412B - In normal condition
passage between ‘A’ and ‘AB’ port is
closed. On introduction of air in the
actuator ‘A’ port is connected to ‘AB’
port is connected to ‘A’.
DIMENSIONS ( IN MM )
Catalogue
Number
Size
A
B
C
ØD
Weight Kgs
Inch
mm
7412B1 5
½
15
85
50
166
165
2.750
7412B20
3/4
20
110
66
200
184
6.350
7412B25
1
25
120
72
250
241
10.750
7412B35
1 ½
35
150
91
310
300
18.000
7412B50
2
50
190
100
432
300
24.500
•OPEN TOLERANCE ± 3MM ALL OVER.
FLOW DIAGRAMS
Note:
Technical specifications details & dimensions are subject to change without prior notice.
Dimensions in the table are approximate subject to final confirmation by AVCON.
