AVID PS793 Pneumatic Rotary Valve Positioner
A force balance pneumatic positioner for quarter turn rotary actuators.
Designed for direct mounting to all NAMUR and Pentair Valves & Controls
pneumatic actuators
Features
General application
Technical data
The PS793 is a pneumatic positioner based on
the force balanced principle, designed for the
proportional operation of quarter turn rotary
actuators. It is generally coupled to the shaft
of the actuator with a local visual indicator
allowing easy on-site monitoring.
Agency approvals
Enclosure
standards (IEC)
IP66
Switches
(optional)
SPDT mechanical switches
Proximity type sensor
(inductive)
Enclosure
Anodized aluminum
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© 2014 Pentair Ltd. All rights reserved.
• Compact design – mounted directly and
axially to the actuator stem by means of
standard kit
• Updated design provides improved features
while maintaining original dimensions cam
profile and product calibration
• Captive fixings used throughout to prevent
loss on site
• High visibility, graduated local visual indicator
disc allows easy on-site monitoring
• Conduit boss is integral to enclosure wall
providing greater strength and reduced
footprint
• Indicator gives visual position of the final
control element
• Stable positioning characteristics provided
for both small and large actuators
• Action (direct or reverse) is easily reversed
in the field by turning cam and reversing
air connection
• Usable for double-acting or single-acting
service
• Unaffected by normal supply pressure
fluctuations
• Integral electric limit switches option.
• Optional adapter and bracket kit for NAMUR
actuators (bracket kit sold separately)
VCTDS-02786-EN 14/08
AVID PS793 Pneumatic Rotary Valve Positioner
dimensions
Signal connection
⅛” NPT
241.50
[9.508 ]
Conduit entry - supplied with plug
½” NPT or M20 x 1.5P or blank (no switches)
according to order
105.00
[4.134]
182.50
[7.185 ]
20.8 5
[0.821 ]
91.5 0
[3.602]
50.80
[ 2.000]
110 . 0 0
[4 . 3 3 1 ]
Supply ¼” NPT
3.98
3.93 A/F
11.00
10.95 A/F
.433
.431
28.84
28. 4 4
[ ]
8
¯ 15.9
15.9 3
[ .629
.627]
¯ 4.90
4.80
[ .193
.189]
Pressure gauge connection
⅛” NPT
41.15
[ 1 .6 2 0 ]
20.58
[ 0.810]
8.89
[ 0 .350]
[ .157
.155]
[ ]
3.98
3.84
.1 57
.1 5 1
4.70
[ 0.185]
28.58 Typical
[ 1 .1 2 5 ]
Port ‘A’
Feedback 3-lobe cam
(Direct or reverse acting see installation document)
50.80
[2 .0 0 0]
5 7 .15 Sq
[2.2 5 0 ]
Exhaust
¼” NPT
[ 11.135
. 120]
3 5.00
[ 1 .378]
X
P
Port ‘B’
46.74
[1 .840]
Outlet connection ‘B’ ¼” NPT
4 screws for direct mounting to actuator
10 - 32 UNF
93.47
[3.6 80]
Outlet connection ‘A’ ¼” NPT
Visual position indicator
4 tapped holes for use with NAMUR bracket
5 /16” - 18 UNC x 8 deep
(10 - 32 UNF holes blanked off with 10 mm
LG screws and sealing caps supplied)
Dimensions in mm, imperial dimensions (inches) in parenthesis
Connections and mounting
Designation of connections
Conduit entry
Port connections
Mounting
A and B – Working lines
P – Compressed air connection
T – Exhaust point
X – Control line
½” NPT or M20 (Blank with no switches)
¼
Any position/orientation, no limits
Direct mounting to Pentair actuators
Namur mounting bracket available
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AVID PS793 Pneumatic Rotary Valve Positioner
Specifications
General specifications
Input signal
Single range
Cam characteristics
3-Lobe cam
Supply
Media
Supply pressure
Air consumption
Environmental
Environmental temperature
Materials of construction
Housing
Diaphragm
Valve spool
Cover
Weight
Options
Gauges
Integral limit switches
3 to 15 psi [0.2 - 1.0 bar] standard
Linear
Curve 1, range: 3 - 15 psi = 90° movement
Curve 2, range: 3 - 9 psi or 9 - 15 psi = 65° movement
Curve 3, range: 3 - 15 psi = 65° movement
Compressed air or gas, dry, dust and oil free with 5 micron filter element to inlet
30 - 100 psi [2 - 8 bar]
0.6 cfm in balanced condition with 60 psi (4 bar) supply
-5° to +160°F [-20° to +70°C]
Anodized aluminum alloy
Nitrile rubber
Stainless steel
Anodized aluminum alloy
5 lb. (2.27 kg)
Instrument air 0 - 30 psi [0 - 2 bar] - 1 off
Supply air 0 - 150 psi [0 - 8 bar] - 2 off
Single pole double throw 10 A 240 V AC
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AVID PS793 Pneumatic Rotary Valve Positioner
Ordering information
Selection guide
Base Model
PS- Pneumatic positioner
Application
0
Standard flow
Conduit options
0
1
2
3
No conduit entry
1 x 1/2" NPT
1 x M20
1 x PG 13.5
Number of switches
0
2
0 switches
2 switches
Switch options
00
01
03
No switches
V3 SPDT mechanical switches
P&F NJ2-V3-N
Terminal Strip
0
B
No terminal strip
8 pt standard
Bracket type (mounting style)
D
I
Direct mount metric fixings
Direct mount imperial fixings
Pneumatic connections
0B BSP
0N NPT
Special features
00
No special features
Certification
0
Non-hazardous
Revision
PS-
0
2
2
01
B
D
0B
-00
-0
R*
Revision number
R1
= Model Number PS-02201BD0B-00-0R2
Notes
1. Please contact your sales office for guidance on selecting the best possible combination for your control and monitoring requirements.
PENTAIR VALVES & CONTROLS
www.pentair.com/valves
All Pentair trademarks and logos are owned by Pentair Ltd. All other brand or product names are trademarks or registered marks of their respective owners.
Because we are continuously improving our products and services, Pentair reserves the right to change product designs and specifications without notice.
Pentair is an equal opportunity employer. © 2012 Pentair Ltd. All rights reserved.
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