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Home > Pneumatic On/Off Valves > Pneumatic Diaphragm Valves > 7412B |
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2/2-Way Pneumatic Diaphragm
Operated Normally Closed Valves
Screwed Female End Type Body For High Duty,
On-Off Application |
DATA SHEET
7412 B |
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| SPECIFICATION : |
| Size |
15 mm (½”) to 50 mm (2") |
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| CONSTRUCTION : |
| Body and End Piece |
Investment Casted ASTM-A,
351CF8 (St.St. 304)/CF8M
(St.St. 316) |
Pressure Temperature Rating
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As per ANSI class 300. |
| End Connections |
Standard BSP(F)/NPT(F) or
Socket Weld. |
| Seating |
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. |
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| 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). |
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| 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. |
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| 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 |
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| OPERATION : |
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| 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. |
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| FLOW DIAGRAMS |
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| Note: |
Technical specifications details & dimensions are subject to change without prior notice.
Dimensions in the table are approximate subject to final confirmation by AVCON. |
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