NOTICE: Information in this manual is intended only to assist our customers in the efficient operation of our equipment. Use of this manual for any other pur-
pose is specifically prohibited and its contents are not to be reproduced in full or part without prior approval.
Use of the DANGER, WARNING, CAUTION and NOTE
This publication includes DANGER, WARNING, CAUTION and NOTE information where appropriate to point out safety related or other important information.
DANGER - Hazards which will result in severe personal injury or death.
WARNING - Hazards which could result in personal injury.
CAUTION - Hazards which could result in equipment or property damage.
NOTE - Alerts user to pertinent facts and conditions.
Although DANGER and WARNING hazards are related to personal injury, and CAUTION hazards are associated with equipment or pr operty damage, it should
be understood that operation of damaged equipment could, under certain operational conditions, result in degraded process system performance leading to
personal injury or death. Therefore, comply fully with all DANGER, WARNING, and CAUTION notices.
W.E. ANDERSON DIV., DWYER INSTRUMENTS, INC.
P.O. BOX 358 • MICHIGAN CITY, INDIANA 46361 U.S. A.
tion of the control valve. The opening, closing or throttling of the
valve plug in the valve body is accomplished by varying the air
pressure to the diaphragm in the actuator. This pressure is transmitted from a control device, which may be controlling pressure,
liquid level, temperature or flow.
®
Valve Actuators are used for automatic opera-
Thus, by selection of actuator and control valve plug action,
either push-to-close or push-to-open, the control valve will either
open or close on failure of air pressure to diaphragm.
The spring and diaphragm are completely enclosed to protect
them from dust, dirt and other foreign matter. Spring adjustments
are made with a ball bearing spring adjustment sleeve.
Diaphragm and spring assembly may easily be removed for
replacement or substitution.
Two types of actuators are used for process control, the choice
of either depends upon the valve action desired in case of air
supply failure. There are two types
Air-to-Lower - Termination Nos. 220 thru 223, 240 thru 244,
Figure 1. In this type of actuator, air pressure moves the push rod
downward compressing the spring. In the event of air failure, the
push rod moves to its extreme upward position.
Air-to-Raise - Termination Nos. 230, 231, 233, 250 thru 254,
Figure 2. In this type of actuator, air pressure moves the push rod
upward compressing the spring. In the event of air failure, the
push rod moves to its extreme downward position.
The construction and operating range are listed on the data plate
mounted on actuator. Actuator size and spring are selected to
meet the requirements of the application. In service the actuator
should create full travel of the valve plug when the pressure range
indicated on data plate is applied. This pressure range is most
generally 3 to 15 psi (20 to 100 kPa), but other ranges are available.
For precise control of valve plug position or where two valves are
to be operated in sequence by one control device, a W.E.
Anderson valve positioner, Catalog Number 100N or 165, is recommended.
Figure 1. Air-to-Lower Actuator
Figure 2. Air-to-Raise Actuator
3
1.2 Catalog Numbers
Control Valves - Hi-Flow™ Series Model Chart
Example2001VA32230LO
2001VA32-230-LO Hi-Flow™Globe Valve; 2-way, 3/4˝ NPT connection, linear plug, bronze body, 316 SS trim, reduced port 1/2˝ size.
Configuration 2
3
Valve Body
Action
00
01
0
1
2
3
Connection
Size
4
5
6
7
8
Valve SeatV
Valve Plug
Type
Valve Body
Material
W
2-way
3-way
Push-To-Close
Push-To-Open (2-way only)
1/2˝ NPT
3/4˝ NPT
1˝ NPT
1-1/4˝ NPT
1-1/2˝ NPT (or Flange with LRF or HRF option)
2˝ NPT (or Flange with LRF or HRF option)
2-1/2˝ Flange (see options)
3˝ Flange (see options)
4˝ Flange (see options)
Single Seat (2-way only)
Double Seat (3-way only)
A
L
S
N
1
3
4
Linear
Linear Needle (2000 to 2002 only)
Equal Percentage (2000 to 2005 only)
Equal Percentage Needle (2000 to 2002 only)
Ductile Iron
Bronze
316 SS
Trim
Material
Actuator
Needle Plug
Port Size
Options
2316 SS
220
221
222
223
230
231
233
2
3
4
5
6
7
8
9
Air-To-Lower, 20 in
Air-To-Lower, 45 in
Air-To-Lower, 45 in
Air-To-Lower, 80 in
Air-To-Raise, 20 in2 (2-way only)
Air-To-Raise, 45 in
Air-To-Raise, 80 in
1/8˝ for Type N valve plug
3/16˝ for Type N valve plug
1/4˝ for Type N valve plug
5/16˝ for Type N valve plug
3/8˝ for Type N valve plug
1/32˝ for Type L valve plug
1/16˝ for Type L valve plug
3/32˝ for Type L valve plug