Armstrong Emech F2 Manuale di installazione, funzionamento e manutenzione - Pagina 9
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F2 Break Open Torques
Break Open Torque (lb.in)
Valve
Size
020 F2
025 F2
040 F2
050 F2
Note:
1. The charted seating and unseating torques are the sum of all friction and resistance for opening
and closing of the disc against the indicated pressure differential for normal service.
2. The relationship between values are linear, and can therefore be interpolated between nominated values.
3. The effect of dynamic torque is not considered in the table.
4. In sizing operators it is not necessary to include safety factors.
5. Break-open torques are approximately equal to the shut-off torques.
The charted values are based on clean liquid service at temperatures between 32°F to 212°F with no internal
deposition or chemical attack, operated a minimum of once a day.*
For conditions that vary from those noted above, apply the following application factors.
*Frequency of operation
< once per day
< once per week +25%
< once per month +40%
< once per year +80%
Note: The above factors are cumulative but never more than 2x the value shown in the Break Open Torque tables above.
Emech F2-Standard Model Codes:
Model Code
F2020
F2025
F2040
F2050
Emech F2- Model Codes on request:
Model Code
Codes
D48916
F2040R
F2050R
F2050RH
The Flow Control Units includes Valve, Actuator, Mounting Kit, Serial Cable, Temperature Sensor, Spanner and
all relevant IOM's.
Armstrong International
221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA
Phone (269) 279-3602 Toll Free (888) HOT-HOSE (468-4673)
Shut off Pressure (psi)
0
145
17
31
27
40
89
185
124
230
Service conditions
+15%
Dry service
Light slurry semi-solids
Heavy slurry and some solids
Temperature:
Description
F2 VALVE 3/4" (20mm) NPT
F2 VALVE 1" (25mm) NPT
F2 VALVE 1-1/2" (40mm) NPT
F2 VALVE 2" (50mm) NPT
Description
F2 Valve 1"(25mm) SW
F2 VALVE 1-1/2"(40mm) FLG
F2 VALVE 2"(50mm) FLG
F2 VALVE 2"(50mm)SANITARY FLG
Flow Control Valve - Model F2
F2 Break Open Torque
270
225
180
135
90
45
0
0
35
Closed Pressure (psi)
-13°F to 14°F
14°F to 32°F
Over 212°F to 257°F
End Connection
Flow Control Unit Codes
Screwed NPT
Screwed NPT
Screwed NPT
Screwed NPT
End Connection
Socket Weld ASME B16.34
Flanged ASME CL.150
Flanged ASME CL.150
Flanged ASME CL.150
Operating Torque
70
105
140
+30%
+40%
+70%
+30%
+15%
+30%
E20F
E25F
E40F
E50F
Flow Control Unit
E40FR
E50FR
Designs, materials, weights and performance ratings are
approximate and subject to change without notice. Visit
armstronginternational.com/emech for up-to-date information.
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