Control Products TA901 User Manual
Control Valves
VALVES
CONTROL
W910 COMPACT
CONTROL VALVE
184
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
Control Valves
TA901
I/P TRANSDUCER
ELECTRONIC
TEMPERATURE
SENSOR
RTD or THERMOCOUPLE
TR890
ELECTRONIC
PID CONTROLLER
TA987
AIR FILTER/REGULATOR
Control Valves
W910 Series Compact Control Valve 186-196
The W910 Series Pneumatic Control Valve offers high quality at an economical price,
incorporating many features found only on more expensive units. Models are available
to provide the proper flow response required by the application.
Controllers & Sensors 197-205
Understanding a Control Loop 197
Controllers – Design & Operation 198-199
TR890 Series Electronic PID Controller 200-201
TA901 Series Electropneumatic I/P Transducer 202
TA987 Air Filter/ Regulator (for TA901 Pneumatic Control Device) 203
Electronic Temperature Sensors (RTD or Thermocouple) 204
Thermowells (for Temperature Sensors) 205
Page No.
CONTROL
VALVES
428 Jones Boulevard • Limerick Airport Business Center
www.watsonmcdaniel.com
• Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
185
CONTROL VALVES
W910 Series
Compact Control Valve
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Models
Service
Sizes 1/2”, 3/4”, 1”, 11/4”, 11/2”, 2”,
Connections Union Ends, 125# Flanged
Body Material 1/2” – 2” Bronze
Seat Material Stainless Steel
Max. Inlet Pressure
DESIGN PRESSURE/TEMPERATURE RATING – PMA/TMA
Union Ends 250 PSIG @ 450˚ F
125# FLG 125 PSIG @ 450˚ F
Description
CONTROL
degrees between minimal flow and full capacity in response to a
signal from an external control device. The control valve, often
referred to as “the final control element,” is a critical part of any
control loop, as it performs the physical work and is the element
that directly affects the process.
A control valve is a device capable of modulating flow at varying
VALVES
Principles of Operation
A control valve is comprised of an actuator mounted to a valve.
The valve modulates flow through movement of a valve plug in
relation to the port(s) located within the valve body. The valve plug
is attached to a valve stem, which, in turn, is connected to the
actuator. The actuator, which can be pneumatically or electrically
operated, directs the movement of the stem as dictated by the
external control device.
Pneumatic/Diaphragm Actuated
Watson McDaniel Pneumatic Actuators are direct acting and
utilize an air signal from an external control device to create a
modulating control action. The force of the air signal is received
into the actuator through a top port and distributed across the full
area of the actuator’s diaphragm. The diaphragm presses down on
the diaphragm plate and spring return assembly, which then moves
the valve stem and plug assembly downward to stroke the valve.
This actuator will move to a stem-out position in the event of air
signal failure. The choice of valve action (stem-In-To-Close or
stem-In-To-Open) will determine its signal failure position.
W910A, W910B, W910C, W910TB,
W910EPA, W910EPC
Water, Steam, Other Liquids
21/2”, 3”, 4”
250# Flanged (optional)
21/2” – 4” Cast Iron
250 PSIG
The W910 Series Pneumatic Control Valve
ers high quality at an economical price,
off
incorporating many features found only on
more expensive units. The following Models are
available to provide the proper flow response
required by the application:
The W910A, W910B & W910C are used
for On/Off control applications, providing a
quick-opening flow response when used
with single or double seated valves.
The W910TB is used for proportional or
PID control applications, providing a throttling
flow response when used with double seated
or 3-way valves.
The W910EPA & W910EPC are used for
proportional or PID control applications,
providing equal percentage flow response
when used with single seated valves.
186
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
CONTROL VALVES
W910 Series
Compact Control Valve
Specifications
Actuator
Model Size Action Signal
W910A 7" On/Off 15 PSIG
W910B 10" On/Off 15 PSIG
W910C 12" On/Off 15 PSIG
W910TB 10" Throttling* 3-15 PSIG
W910EPA 7" Equal
W910EPC 12" Equal
* Includes 3-Way Valves
Actuator Housing
Setting Scale
Adjustment Screw
Adjustment Screw Bushing
Range Adjustment Spring
Pressure Plate
Diaphragm
Air Pressure to Diaphragm
Air Pressure Connection
Operating Temperature
Diaphragm
Die cast aluminum, epoxy powder
coated blue finish.
Integral to housing
Brass
Lubricant impregnated sintered bronze
Cadmium plated
Aluminum
Nylon reinforced EDPM
30 PSIG maximum
1
/8“ NPT Female
Ambient:
-40°F (-40°C) to 180°F (82°C)
Process Flow:
-40°F (-40°C) to 410°F (210°C)
Control Input
Percentage 3-15 PSIG
Percentage 3-15 PSIG
Units: inches [mm]
A
AIR INLET
1/8” NPT
B
Actuator Number A B Approx. Shipping Weight
W910A 7.0 [178] 9.8 [249] 6.6 lbs [2.97 kg]
W910B 9.3 [236] 9.8 [249] 8.5 lbs [3.83 kg]
W910C 11.4 [290] 9.8 [249] 12.0 lbs [5.41 kg]
W910TB 9.3 [236] 9.8 [249] 9.6 lbs [4.32 kg]
W910EPA 7.0 [178] 9.8 [249] 7.6 lbs [3.42 kg]
W910EPC 11.4 [290] 9.8 [249] 13.1 lbs [5.90 kg]
Actuator
• W910 Series Pneumatic Actuators are used in conjunction with
the W910 Series Control Valve. Choose the appropriate Actuator
model based on the intended service.
CONTROL
VALVES
HOW TO ORDER Sample Order Number: W910TB - A56
Actuator
Model
W910A
W910B On/Off Refer to pages 188-190
W910C
W910TB Throttling Refer to pages 191-193
W910EPA
W910EPC
Control Action Valve Body Number
Equal Percentage Refer to page 188
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
Procedure:
1. Determine the Actuator Model ( W910A, W910B, W910C,
W910TB, W910EPA or W910EPC) required.
Note: Refer to the maximum close-off pressur
the Valve Body Selection tables to deter
equired by your application.
r
2. Determine the
Size, style and material required by the application.
Note: Consult the Valve Selection tables on the following
pages to determine the required Valve Body Number.
Valve Body Number based on the Valve
e columns in
mine the Actuator size
187
CONTROL VALVES
W910 Series
Valve Body for W910A, W910B, W910C, W910EPA & W910EPC
Single Seat • 1/2” – 2”
Stem In-To-Close
(normally closed)
VALVES
CONTROL
Specifications
Body Material Trim Material Trim Style Connection Pressure & Temperature Rating
Bronze Stainless Steel ML or EP NPT with Malleable Iron Union Ends 250 PSI @ 410°F (210°C)
Valve Body Selection
In-To-Close (Normally Open)
(normally open)
Actuator
Mounting
Surface
C
C
B
B
FLOW
A
A
Maximum Close-Off Pressure (PSI ΔP)
Valve Body No. Size Actuator Dimensions Approximate
ML EP
A14 E14
A19 E19
A26 E26 1" 8.4 200 250 x 200 6.0 [152] 2.3 [58] 2.3 [58] 6.0 lbs [2.70 kg]
A36 E36 11/4" 15 100 250 x 150 7.2 [183] 2.6 [66] 2.6 [66] 9.7 lbs [4.37 kg]
A47 E47 11/2" 21 50 150 250 100 7.7 [196] 2.6 [66] 2.6 [66] 10.8 lbs [4.86 kg]
A58 E58 2" 33 25 50 250 50 8.6 [218] 3.1 [79] 3.1 [79] 16.3 lbs [7.34 kg]
Connection (NPT)
1
/2" 2.8 250 x x 250 4.8 [122] 1.8 [46] 1.8 [46] 3.0 lbs [1.35 kg]
3
/4" 5.6 250 x x 250 5.6 [142] 2.3 [58] 2.3 [58] 4.9 lbs [2.21 kg]
C
W910A W910B W910C W910EPC A B C Shipping Wt.
v
BRONZE
Stem In-To-Open
FLOW
A
A
ML = Modified Linear (On/Off); EP = Equal Percentage
Actuator
Mounting
Surface
C
C
B
B
188
In-To-Open (Normally Closed)
alve Body No.
V
ML EP
A15 E15
A22 E22
A30 E30 1" 8.4 200 x x 200 6.0 [152] 2.3 [58] 2.3 [58] 6.0 lbs [2.70 kg]
A41 E41 11/4" 15 150 x x 150 7.2 [183] 2.6 [66] 2.6 [66] 9.7 lbs [4.37 kg]
A52 E52 11/2" 21 100 x x 100 7.7 [196] 2.6 [66] 2.6 [66] 10.8 lbs [4.86 kg]
A63 E63 2" 33 50 x x 50 8.6 [218] 3.1 [79] 3.1 [79] 16.3 lbs [7.34 kg]
All dimensions are inches [mm].
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA
Size Actuator
Connection (NPT)
1
/2"
3
/4" 5.6
C
v
2.8 250 x x 250 4.8 [122] 1.8 [46] 1.8 [46] 3.0 lbs [1.35 kg]
Maximum Close-Off Pressure (PSI ΔP)
Dimensions Approximate
W910A
250 x x 250 5.6 [142] 2.3 [58] 2.3 [58] 4.9 lbs [2.21 kg]
W910B W910C W910EPA A B C Shipping Wt.
• 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
CONTROL VALVES
W910 Series
BRONZE
Stem In-To-Close
(normally open)
Valve Body for W910A,W910B & W910C
Double Seat • 3/4” – 2”
Stem In-To-Open
(normally closed)
Actuator
Mounting
Surface
C
C
B
B
FLOW
A
A
FLOW
A
A
Actuator
Mounting
Surface
C
C
B
B
CONTROL
VALVES
Specifications
Body Material Trim Material Trim Style Connection Pressure & Temperature Rating
Bronze Stainless Steel Modified Linear NPT with Malleable Iron Union Ends 250 PSI @ 410°F (210°C)
Valve Body Selection
In-To-Close (Normally Open)
Valve Body
Number
A21
A29 1" 1" 12 250 x x 6.0 [152] 2.3 [58] 2.3 [58] 6.1 lbs [2.75 kg]
A39 11/4"1
A50 11/2"1
A61 2" 2" 47 200 x x 8.6 [218] 3.1 [79] 3.1 [79] 17.0 lbs [7.65 kg]
In-To-Open (Normally Closed)
Valve Body
Number
A24
A33 1" 1" 12 250 x x 6.0 [152] 2.3 [58] 2.3 [58] 6.1 lbs [2.75 kg]
A44 11/4"1
A55 11/2"1
A66 2" 2" 47 200 x x 8.6 [218] 3.1 [79] 3.1 [79] 17.0 lbs [7.65 kg]
All dimensions are inches [mm].
Connection (NPT) Nominal Port
Connection (NPT) Nominal Port
Size Actuator Dimensions Approximate
3
/4"
3
/4"
3
/4" 8 250 x x 5.6 [142] 2.3 [58] 2.3 [58] 5.0 lbs [2.25 kg]
1
/4" 21 250 x x 7.2 [183] 2.6 [66] 2.6 [66] 10.1 lbs [4.55 kg]
1
/2" 30 250 x x 7.7 [196]
Size Actuator Dimensions Approximate
3
/4" 8 250 x x 5.6 [142] 2.3 [58] 2.3 [58] 5.0 lbs [2.25 kg]
1
/4" 21 250 x x 7.2 [183] 2.6 [66] 2.6 [66] 10.1 lbs [4.55 kg]
1
/2" 30 250 x x 7.7 [196] 2.6 [66] 2.6 [66] 11.1 lbs [5.00 kg]
Maximum Close-Off Pressure (PSI ΔP)
C
W910A W910B W910C A B C Shipping Wt.
v
2.6 [66] 2.6 [66] 11.1 lbs [5.00 kg]
Maximum Close-Off Pressure
C
W910A W910B W910C A B C Shipping Wt.
v
(PSI ΔP)
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
189
CONTROL VALVES
W910 Series
Valve Body for W910A, W910B & W910C
Double Seat • 21/2”–4”
Stem In-To-Close
(normally open)
Actuator
Mounting
Surface
C
C
B
B
Stem In-To-Open
(normally closed)
CAST IRON
Actuator
Mounting
Surface
C
C
B
B
VALVES
CONTROL
FLOW
A
FLOW
A
A
Specifications
Body Material Trim Material Trim Style Connection Pressure & Temperature Rating
Cast Iron Stainless Steel Modified Linear 125# Flanged 125 PSI @ 350°F (176°C)
Valve Body Selection
In-To-Close (Normally Open)
Valve Body
Number
B73 21/2"2
B78 3"
B83 4" 4" 196 125 x x 11.4 [290] 6.3 [160] 6.5 [165] 100 lbs [45 kg]
In-To-Open (Normally Closed)
Valve Body
Number
B74 21/2"2
B79 3" 3" 90 125 x x 9.0 [229] 5.0 [127] 5.6 [142] 70 lbs [32 kg]
B84 4" 4" 196 125 x x 11.4 [290] 6.3 [160] 6.5 [165] 100 lbs [45 kg]
All dimensions are inches [mm].
Connection Nominal PortC
Connection Nominal Port
Size Actuator Dimensions Approximate
1
/2" 69 125 x x 7.8 [198] 4.8 [122] 5.4 [137] 45 lbs [20 kg]
3" 90 125 x x 9.0 [229] 5.0 [127] 5.6 [142] 70 lbs [32 kg]
Size Actuator
1
/2" 69 125 x x 7.8 [198] 4.8 [122] 5.4 [137] 45 lbs [20 kg]
Maximum Close-Off Pressure (PSI ΔP)
W910A W910B
v
Maximum Close-Off Pressure (PSI ΔP)
C
W910A W910B W910C A B C Shipping Wt.
v
W910C A B C Shipping Wt.
Dimensions Approximate
190
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
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