User Guide

easy-e Valves
Product Flier
PF51.1:E
July 2008
22
Actuator Selection for Plain Bonnets and Standard Spring-Loaded PTFE Packing
The following tables allow you to select an actuator
that will operate the valve at standard actuator
pressures.
It is not implied that the selections shown are best
for your application. In many cases, a smaller
actuator might be satisfactory for lower pressure
drops, and higher pressure drops might be possible
by using higher actuator pressures. Your sales office
can help you with more detailed actuator selection.
D The actuator selections have been made at
maximum valve travel using plain bonnets and
standard valve stem diameter.
D The selections are valid to 232_C only (204_C
for soft-seat constructions). For higher temperatures,
your sales office can provide actuator selections for
graphite ribbon/filament packing or extension
bonnets.
D Actuator force does not exceed maximum
allowable stem load of standard 316 stainless steel
stem material at 232_C.
D Do not exceed the maximum inlet pressure of
the valve (valve body rating) nor the pressure drop
limits on pages 17 and 18.
657 and 667 Actuators
ED and EWD Valve: Metal Seat with Class II Shutoff and Flow Down
Maximum Inlet Pressure: Through EN PN 100 and ASME CL600
Maximum Shutoff Pressure Drop: As shown below unless limited by body
pressure-temperature rating or trim capabilities at high temperatures
Process Fluid Temperature: With plain bonnet, 18 to 232_C for metal seats
Ambient Temperature: 40 to 82_C with standard actuator materials; also refer to
temperature limits of accessories
Valve and Bonnet: Cast iron, steel, or stainless steel
Trim: Any listed in this flier
Gaskets: Any listed in this flier
Packing: Single PTFE V-ring
Other Valve Parts: Steel or stainless steel
Valve Size or Nominal Trim Size
Port
Diameter,
mm
Air to Close (657 Actuator)
0 to 1.2 Bar (0 to 18 psig)
Air to Diaphragm Except
Where Indicated
Air to Open (667 Actuator)
0 to 1.2 bar (0 to 18 psig)
Air to Diaphragm Except
Where Indicated
DN NPS Actuator Size
Pressure Drop,
Bar
Actuator Size
Pressure Drop,
Bar
25 1 or 1-1/4 33.3 30 99.3 30 99.3
40 1-1/2
33.3
47.6
30
34
99.3
99.3
30
34
99.3
99.3
50 2
33.3
58.7
40
40
99.3
91.0
40
40
99.3
91.1
65 2-1/2
47.6
73.0
40
45
99.3
99.3
40
45
99.3
99.3
80 3
58.7
87.3
45
45
99.3
98.9
45
45
99.3
98.9
100 4
73.0
111.1
45
45
99.3
83.8
45
45
99.3
41.2
150 6
111.1
177.8
50
70
80.5
99.3
70
70
99.3
99.3
200 8 203.2 - - -
(1)
99.3
(1)
- - -
(1)
99.3
(1)
1. Use a size 70 actuator with 0 to 2.4 bar air to diaphragm.