Yoshitake PD-1 User manual

12-1
Air Operated Valve
Control Valve
12

12-2
Step 0 Type/Structure/Features
Please refer to this for structure and feature of Air
Operated Valve and Control Valve.
Step 1 Selection
Please refer to the ID chart to select the right products
depending on the intended of uses. Confirm the
additional details on the product page.
Step 2 Sizing
Please confirm the essential Cv value on the sizing
data P. -5. or Please confirm the essential sizes on the
nominal diameter selection chart of the product page.
Step 3 Attentions for usage
Please check some guidelines for optimal usage of the
products such as installation.

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12
12-3
Air Operated Valve/Control Valve
Air Operated Valve/Control Valve
Step
0
Selection of Air Operated Valve and Control Valve
Opening and shutting
take place with the power
of air pressure
Control valve is a pneumatic,
hydraulic, or electrically powered
device to control operating
conditions such as flow, pressure,
temperature, and liquid level by
fully or partially opening or closing
in response to a process signal
Diaphragm motive pressure type
Control the opening and shutting of valve take place
with air pressure in addition to diaphragm
Valve that opens and closes the valve directly by
applying air pressure to the actuator
Various process
control by a
combination of
controller
Control on/off of the
fluid line for explosion
proof area that cannot
use electricity
What is Air Operated Valve?
What is Control Valve?
Application
Application
Best Selection Chart (Except control valve)
This chart include solenoid valve (DD series) and motor valve (MD series) of block 11 other than air operated valve.
Requirement 1st recommendation 2nd recommendation
High-speed response Steam DP-100100F DP-10
Cold and hot water DP-200 Series PD Series
Water hammer prevention Steam MD-54
Cold and hot water DP-200 Series PD Series + Speed controller
No rubber material (Stainless steel, PTFE) DP-100100F MD Series
Easy maintenance DPDD Series
Manual operation MD Series
On/Off switch MD Series
Usable in explosion-proof area DP-34N PD Series
Less scale problems PD Series MD Series
Lightweight, compact and space-saving DD Series DP Series

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AIR OPERATED VALVES/CONTROL VALVES Control ID Charts
12
Air Operated Valve/Control Valve
Step
1
Model Type Fluid Material
Working
Press.
(MPa)
Max.
Temp.
(˚C)
Connection Size Feature Page
PD-1
Diaphragm
type
Steam,
Air,
Water, Oil
CAC406
0-1.0 180˚C
JIS Rc 15-25A · Screwed type -9
PD-2 FC200 JIS 10KFF 15-50A · Flanged type -9
PD-3 Piston
type
Steam,
Air,
Water, Oil
Equivalent
to SCS14A
0-2.2 *1 200˚C JIS Rc 15-50A · Screwed type -11
Model Type Fluid Material
Working
Press.
(MPa)
Max.
Temp.
(°C)
Connection Size Feature Page
CT-1 2 ways
valve
Steam, Air,
Cold and
hot water,
Oil
SCPH2 0-1.0 210˚C JIS 10KRF 15-100A · Diaphragm motive
pressure type -12
* Max. pressure depends on size. Please refer to P. -11 for details.
* Please contact us for fluid and connections except those mentioned above.
Air Operated Valve ID-Charts
Control valve ID-Charts

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12
12-5
Air Operated Valve/Control Valve
Air Operated Valve/Control Valve
Step
2
Nominal Size Selection for Air Operated Valve and Control Valve
Calculation formula for Cv value
Cv value table
Formula for correction of viscosity
(1) For steam
(2) For gas
(3) For liquid
W : Max. steam flow rate [kg/h]
P1 : Inlet pressure [MPa · A]
P2 : Outlet pressure [MPa · A]
ΔP : P1 - P2[MPa]
k : 1 + 0.0013 x {superheated steam temp. [°C]
- saturated steam temp. [°C] }
Q : Max. gas flow rate [m3/h (standard condition)]
G : Specific gravity (relative to air for gas, or
relative to water for liquid)
t : Fluid temperature [°C]
V : Max. liquid flow rate [m3/h]
Cv : Cv value of each nominal size
Iv : Viscosity index
Mcst: Viscosity [cSt]
When
When
When
When
2> P1
2
PCv = Wk
138 ΔP(P1 + P2)
2P1
2
PCv = Wk
120P1
2> P1
2
P(273 + t) G
Cv = Q
2940 ΔP(P1 + P2)
2P1
2
P2560P1
Q
Cv = (273 + t)G
Cv = 0.365V G
ΔP
Iv = V
72780
Mcst
( )
G
ΔP 1
4
1
2
Iv: Viscosity index
Viscosity correction curve
K: Cv correction coefficient
Nominal size
Model
10A 15A 20A 25A 32A 40A 50A 65A 80A 100A
PD-1, 2 5 7 11 16 24 40
PD-3 4 9.2 17.4 27.8 40.6 63.8
CT-1 6 9 14 25 33 50 85 106 175

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12
12-6
Air Operated Valve/Control Valve
Air Operated Valve/Control Valve
Step
3
Guidelines for Installing Air Operated Valve
Warning and caution for installation
Piping example
Speed
controller
Pressure
gauge Strainer
(60 mesh)
Stop
valve V1
PD-3 Air
operated valve
Stop
valve V2
Pressure
gauge
Pressure
gauge
Stop
valve V3
3/2 way solenoid
valve DD-37
PRV with filter
GD-37
Air motive pressure
Bypass
Union
Union
Union
1. Before connecting the product to piping, remove foreign substances and scales inside the piping. Note that
the seal material must not flow into the inside of the product.
* Contamination of foreign substances can cause valve seat leakage and malfunction.
2. When installation, check the direction of the product so that the fluid flowing and the arrow marked on the
product are in the same direction.
3. As shown in the above figure, it is recommended that stop valves, strainers, pressure gauges and bypass
line to be installed to the piping. For screwed valve, a union joint is recommended to install for easy
maintenance and inspection.
4. Make sure to install a strainer with the mesh size 80-100mesh at the inlet side of the product.
5. Avoid over-tightening of screw and excessive stress imposed from the piping in order to prevent malfunction
due to the distortion of the body.
6. Secure a space required for disassembly or removal of the product at the time of maintenance and
inspection.
<PD-1, 2>
· Installation posture
Install the air operated valve vertically (the air
pressure inlet port must be faced upward). Any direction is possible.
<PD-3>
WRONG
O.K.
WRONG
WRONG
O.K.
O.K.
O.K.
O.K.

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12
12-7
Air Operated Valve/Control Valve
Air Operated Valve/Control Valve
Warning and caution for installation
1. Before connecting the product to piping, remove foreign substances and scales inside the piping. Note that
the seal material must not flow into the inside of the product.
* Contamination of foreign substances can cause valve seat leakage and malfunction.
2. When installation, check the direction of the product so that the fluid flowing and the arrow marked on the
product are in the same direction.
3. As shown in the above figure, it is recommended that stop valves, strainers, pressure gauges and
bypass line are installed to the piping. For screwed valve, a union joint is recommended to install for easy
maintenance and inspection.
4. Make sure to install a strainer with the mesh size 80-100 at the inlet side of the product.
5. Avoid over-tightening of screw and excessive stress imposed from the piping in order to prevent malfunction
due to the distortion of the body.
6. Recommend the upright installing position for the control valve (top drive unit).
7.
Secure a space required for disassembly or removal of the product at the time of maintenance and inspection.
8. Control Valve is not explosion-proof. Do not use in the area or ambience where explosive gasses accumulate.
9. When using at the outdoor, set eaves to avoid direct rain.
Piping example
DC: 4-20 mA
Input Signal
Storage tank
Sensor
Pressure
gauge
Stop valve
CT-1 Control valve
Strainer
Bypass
Stop valve
Pressure
gauge
Stop valve
[For temperature control]
·
Standard opening signal and valve opening, flow rate, temperature relationship. ·Installation posture
Recommend the upright installing position
for the control valve (top drive unit).
Driving part
Signals (DC)
20 mA Fully open
(100%)
Steam amount:
Maximum
Temperature:
Maximum
Increase
signal Open Steam amount:
Increase Temperature:
Slow increase
4 mA Fully close
(0%) Steam amount:
Flow rate 0 Temperature: Stable
Valve operation (valve opening) Condition of fluid Condition of fluid inside of tank
Controller
Guidelines for Installing Control Valve

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12
12-8
Air Operated Valve/Control Valve
Air Operated Valve/Control Valve
Step
3
Other usage examples
Signals (DC)
20 mA Fully open
(100%) Flow rate:
Maximum
Increase
signal Open Flow rate:
Increase
4 mA Fully close
(0%) Flow rate:
Minimum
Valve operation (valve opening) Condition of fluid
Signals (DC)
20 mA Fully open
(100%) Pressure:
Minimum
Increase
signal Open Pressure:
Decrease
4 mA Fully close
(0%) Pressure: Maximum
Valve operation (valve opening) Condition of fluid
Signals (DC)
20 mA Fully open
(100%)
Water level:
Quick increase
Increase
signal Open Water level:
Slow increase
4 mA Fully close
(0%) Water level: Stable
Valve operation (valve opening) Condition of fluid
Controller
Flow rate sensor
CT-1
Control valve
DC: 4-20 mA
Pressure gauge
[For flow rate control]
Input Signal
DC: 4-20 mA
CT-1
Control valve
Pressure sensor
Controller
Pressure gauge
[For pressure control]
Input Signal
Controller
Input SignalDC: 4-20 mA
Water sensor
CT-1
Control valve
Tank
Pressure gauge
[For water level control]

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12
12-9
Air Operated Valve/Control Valve
Air Operated Valve
S
PD-1
PD-2
Air pressure
3 way
solenoid valve
1. Usable for air, water, oil and steam.
2. No chattering due to closing action against the
flow direction of fluid.
3. Excellent durability of stainless steel valve seat.
4. Excellent durability of synthetic rubber diaphragm.
Features
Specifications
PD-1,2
Model PD-1 PD-2
Application Steam, Air, Cold and hot water, Other non-dangerous fluids
Working pressure 0-1.0 MPa
Max.temperature 180°C
Operation Air-to-open
Pilot pressure 0.2-0.25 MPa
Material
Body Bronze Cast iron
Valve Stainless steel
Valve seat Stainless steel
Connection JIS Rc screwed JIS 10K FF flanged
· Available with air-to-close operation type.
* For air operated pressure reducing valve, please refer to the block P. -10 (GD-37UN standard unit for
operation or GD-37N pressure reducing valve).
For 3 way solenoid valve, please refer to the block P. -11 (DD-37 3way solenoid valve).

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12
12-10
Air Operated Valve/Control Valve
PD-1, 2
Structure is a little different depending on size.
Dimensions (mm) and Weights (kg)
·PD-1
·PD-2
Nominal size d L H H1Cv value Weight
15A Rc 1/2 90 210 50 5 4
20A Rc 3/4 100 221 56 7 4.4
25A Rc 1 110 221 56 11 4.7
Nominal size LHH
1φA
Cv value Weight
15A 120 210 50 140 5 5.9
20A 130 221 56 140 7 6.6
25A 140 221 56 140 11 8.1
32A 180 412 100 256 16 28.5
40A 180 412 100 256 24 29.0
50A 180 422 105 256 40 30.0