User Guide

easy-e Valves
Product Flier
PF51.1:E
July 2008
11
657 and 667 Pneumatic Diaphragm Actuators
These heavy-duty actuators feature spring-return
action and a variety of operation options and
actuator-mounted accessories.
The actuator can be used for on-off or throttling
service, with or without a positioner.
With a push-down-to-close valve, the 657 is air to
close, and the 667 is air to open.
Options . . .
J Adjustable travel stop, J
top-mounted handwheel, and J side-mounted
manual actuator.
Specifications . . . Refer to the following table and
the actuator-valve selection tables.
Accessories . . . Refer to the following pages for J
pneumatic and electro-pneumatic valve positioners,
J FIELDVUE digital valve controllers, and other
accessories
W0363-1
Figure 6. 657 and 667 Actuator
657 and 667 Actuator Specifications
ACTUATOR
SIZE
NOMINAL
OPERATING
PRESSURE RANGES
MAXIMUM CASING
PRESSURE, BAR
MAXIMUM
ALLOWABLE
THRUST, N
AMBIENT
TEMPERA-
TURES, _C
MATERIALS
APPROXIMATE
WEIGHT, kg
Bar Psig 657 667 657 667
30
0.2 to 1.0
or
0.4 to 2.0
3 to 15
or
6 to 30
9.6 7.6
10 231
Nitrile:
40 to 82
Silicone:
50 to 149
Diaphragm:
Nitrile (standard)
or
Silicone
(Optional)
Yoke: Cast iron
Diaphragm
Plate: Aluminum,
cast iron, or steel
(depending on
size)
Other Major
Metal Parts: steel
or cast iron with
brass seal
bushing
16 15
34 5.2 6.2 22 22
40 5.2 6.2 12 010 23 23
45 4.1 5.2 25 132 37 41
46 3.4 4.5 33 584 49 55
50 4.1 5.2 25 131 42 43
60 3.4 4.5 30 246 53 55
70 4.5 4.1 39 142 107 115
80 4.1 4.1 63 392 234 284
100 7.9 7.9 200 160 346 544