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Products l Back |
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3/2-Way Plastic Pneumatic Piston
Operated Mixing or Diverting Valves.
For On-Off Application (Rust Free Design)
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DATA SHEET
6816M-Normally ‘A’
Port Closed.
6819M-Normally ‘B’
Port Closed. |
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| SPECIFICATIONS : |
| Sizes |
15 mm (½”) to 50 mm (2”). |
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| CONSTRUCTION : |
| Body and Bonnet |
Investment casted ASTM A351
CF8(St.St.304)CF8M(St.St.316) |
| Pressure Temp. rating. |
As per ANSI class 300. |
| End Connections |
Standard
BSP(F) Optional-NPT(F) |
| Seating |
Soft seated Teflon backed by
EPDM. Optional-VITON/EPDM,
Buna Nitrile. |
| Leakage Class |
As per ANSI B 16.104-1976,
Teflon seating class IV. For
other soft seating class VI
Drop Tight/Bubble Tight. |
| Trim |
SS AISI 304/316 |
| Stem Packing |
Self adjusting, Spring loaded
Teflon packing. |
| Characteristics |
On-Off, normally closed /
normally open |
| Working Fluid Pressure |
Refer to table below. |
| Working Temperature |
On steam- continuous :155°C,
Intermittent 180°C, with Teflon
seating, Buna Nitrile 80°C,
EPDM 135°C VITON 180°C |
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| ACTUATOR : |
| Spring Return type Plastic Pneumatic Actuator. |
| Cylinder, cover,Body & piston |
Glass filled polyamide. |
| Piston Packing |
Buna Nitrile. |
| Actuator Spring |
IS 4454 Grade III, duly painted. |
Actuator Working
Single pressure |
3.5 to 6 bar (refer to graph) |
Operating cycles
per hour |
15mm,20 mm,25 mm upto 600
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 |
Lubricated/Non-lubricated. |
Max. Operating
Pressure differential. |
Refer to graph. |
| Accessories |
Air lock, position indicating
limit switch box, solenoid
valve, filter regulator gauge.
Other accessories available
on application. |
| Application |
For control of air, water, oil,
gas, steam in textile, power
generation, atomic energy,
paper & pulp, chemical,
petrochemical industries,
PSA nitrogen system, air dryer,
gas generator and in process
plants. |
| Back Pressure |
Generally all models are for
back pressure upto 2.5 bar.
However for specific application
where higher back pressure is
excepted, refer to ‘AVCON’. |
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| SPECIFICATION TABLE |
Catalogue
Number |
Size |
Orifice |
Flow Factor
Kv |
Maximum Pressure in bar |
Actuator Model |
Air
Consumption |
| Water |
Steam |
| Inch |
mm |
mm |
M³ /hr. |
Bar |
Bar |
No. |
liters/cy. |
6816M15
6819M15 |
½ |
15 |
15 |
3.3 |
10
10 |
10
10 |
K-61 |
0.25 |
6816M20
6819M20 |
3/4 |
20 |
18 |
4.7 |
10
10 |
10
10 |
K-61 |
0.25 |
6816M25
6819M25 |
1 |
25 |
23 |
8.5 |
10
10 |
10
10 |
K-81 |
0.64 |
6816M35
6819M35 |
1 ½ |
35 |
36 |
22.5 |
7
7 |
7
7 |
K-101 |
0.85 |
6816M50
6819M50 |
2 |
40 |
45 |
35 |
6
7 |
6
7 |
K-101 |
0.85 |
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Note:
6816MXX is Mixing Valve with ‘A’ Port Closed, Flow ‘B’ to ‘AB’ and
6819MXX is Diverting Valve with ‘B’ Port Closed, Flow ‘AB’ to ‘A’. |
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| OPERATION : |
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Valve Type 6816M- In normal
condition
, ‘A’ port is closed and
‘AB’ port is
connected to ‘B ‘ or ‘B’
port is
connected to ‘AB’ port. On
receiving
pilot pressure, ‘A’ port
is connected to
‘AB’ or ‘AB’ port is
connected to ‘A’
closing port B.
Valve Type 6819M -
Normally ‘B’
port is closed and ’A’ port
is
connected to ‘AB’ or ‘AB’ port is
connected to ‘A’. On receiving
signal
‘A’ port is closed and
‘B’port is connected
to ‘AB’ or
‘AB’ port connected to ‘B’. |
Mixing
Valves can be used for
introducing two different fluids
(mixing) through two different
ports to common port ‘AB’.
Diverting
One fluid coming through port
‘AB’ can be diverted to ‘A’ port or
‘B’ port. |
| DIMENSIONS ( IN MM ) |
Catalogue
Number |
Size |
Actuator |
A |
B |
C |
D |
E |
| Inch |
mm |
6816M151
6819M151 |
½ |
15 |
K-61
K-51 |
85 |
52 |
205
192 |
80
63.5 |
52
44 |
6816M201
6819M201 |
3/4 |
20 |
K-61
K-61 |
110 |
66 |
210
210 |
80 |
52 |
6816M251
6819M251 |
1 |
25 |
K-81
K-61 |
120 |
72 |
250
218 |
100
80 |
60.5
52 |
6816M351
6819M351 |
1 ½ |
35 |
K-101
K-81 |
150 |
92 |
325
265 |
129
100 |
73
60.5 |
6816M501
6819M501 |
2 |
50 |
K-101
K-101 |
190 |
100 |
330
330 |
129 |
73 |
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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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