Flow Woodward R Ddv How To Order 1505492257 Part Number, Jan 22, 2010 User Manual
Woodward R-Ddv How To Order-1505492257 WOODWARD_R-DDV_HOW_TO_ORDER-1505492257
2017-10-06
User Manual: Flow Woodward R-Ddv How To Order-1505492257
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R-DDV Part Number, Jan 22, 2010.doc
R-DDV SERVOVALVE PART NUMBER SYSTEM
Example Part Number: 27A50F - 3D01 G - 999
Options: Spool Lap
Code Option
Blank Std machined Overlap, electrically compensated
to apparent Zero-lap (27A and 27C only)
-999 Flow ground to Zero-lap (cost adder 27A, 27C)
-998* Flow ground to 3% Underlap
-997* Std machined Overlap, no electrical
compensation for lap
-996* ‘Zero Flow’ shut-off at zero command
-995 10% Overlap, electrically compensated to
apparent Zero-lap (cost adder 27A, 27C)
-8XX* No Internal Fuse
-XXX* Contact WHRT for other special considerations
* at additional cost
Basic Configurations
Model Port Circle Bolt Pattern Std Elec Connection
27A50F 0.48” .938” X 1.032” 4-wire shielded cable
27B50F ------ D03 ------- 4-wire shielded cable
27C20F 0.78” 1.344” X 1.688” 4-wire shielded cable
27E50F 0.875” 1.750” X 2.562” 4-pin MS 3102 connector
27G50F 1.75” 2.375” X 3.625”
4-
p
in MS 3102 connector
O-Ring Material
Code Description
- Nitrile (std config)
A* Ethylene Propylene
V* Viton
* at additional cost
Flow Rate
Model 27A50F
Code gpm* scfm** C Factor***
Max Pressure Std Lap
0M 0.18 0.45 0.008 5000
p
si 5% UL
1E 0.4 1.0 0.018 5000
p
si 5% UL
2F 0.9 2.0 0.036 5000
p
si 1% OL
3D 1.8 4.0 0.071 5000
p
si 10% OL
4
K
3.5 8.0 0.14 5000
p
si 10% OL
Model 27B50F
Code gpm* scfm** C Factor***
Max Pressure
1
A
0.2 0.5 0.009 5000
p
si
2B 0.6 1.5 0.027 5000
p
si
3C 1.2 3.0 0.054 5000
p
si
4D 2.5 6.0 0.11 5000
p
si
5E 5.0 11.5 0.21 3000
p
si
6F 8.0 18 0.32 2000
p
si
7G 11.0 25 0.45 1000
p
si
* 4-way flow rating with hydraulic oil at 1000 psid ** 4-way flow rating with air at 100 psig *** Per orifice
Model 27C20F
Code gpm* scfm** C Factor***
Max Pressure Std Lap
3B 5.0 11.5 0.21 3000
p
si 10% OL
4D 8.0 18 0.32 2000
p
si 10% OL
5
K
10.5 24 0.43 1000
p
si 10% OL
Model 27E50F
Code gpm* scfm** C Factor***
Max Pressure
3B 10.0 23 0.41 5000
p
si
4
A
15.0 34 0.61 5000
p
si
Model 27G50F
Code gpm* scfm** C Factor***
Max Pressure
1F 20.0 46 .82 5000
p
si
3F 30.0 68 1.22 5000
p
si
5F 40.0 92 1.64 5000
p
si
9F 60.0 136 2.44 3000
p
si
options basic part number
Options: Leadwire / Connector*
Code Description
Blank See ‘Basic Configurations’ Table
Models 27A50F, 27B50F and 27C20F
G In line 4-pin MS 3102 connector
A – F, H Contact WHRT for description
Models 27E50F and 27G50F
J 6-pin MS 3102 connector
* at additional cost for other than ‘Basic’
Electrical Commands
Code
Command Code
Command
01 ± 5 Volts 10 4 to 20 mA
02 ± 10 Volts 11 ± 10 mA
03 ± 5 mA 12 ± 8 mA
04 ± 50 mA 13* ± 12 mA
05* 0 to + 10 Volts 14 ± 20 mA
06 ± 40 mA 15* ± 10 Volts / ± 20 mA
07* ± 2 Volts / ± 5 mA 16* ± 2.5 Volts
08* ± 3 Volts / ± 7.5 mA 17* ± 100 mA
09* ± 5 Volts / ± 12.5 mA 18* ± 2.5 Volts / ± 6.2 mA
* at additional cost
