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R-DDV

SERVOVALVE PART NUMBER SYSTEM basic part number

Example Part Number:

options

27A50F - 3D01 G - 999 Options: Spool Lap

Basic Configurations Model

27A50F 27B50F 27C20F 27E50F 27G50F

Code

Std Elec Connection 0.48” .938” X 1.032” 4-wire shielded cable ------ D03 ------4-wire shielded cable 0.78” 1.344” X 1.688” 4-wire shielded cable 0.875” 1.750” X 2.562” 4-pin MS 3102 connector 1.75” 2.375” X 3.625” 4-pin MS 3102 connector

Port Circle

Bolt Pattern

Option

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 Blank

* at additional cost

O-Ring Material Code

Description

A* V*

Nitrile (std config) Ethylene Propylene Viton

Electrical Commands Code Command

01 02 03 04 05* 06 07* 08* 09*

* at additional cost

Options: Leadwire / Connector*

Code Command

± 5 Volts ± 10 Volts ± 5 mA ± 50 mA 0 to + 10 Volts ± 40 mA ± 2 Volts / ± 5 mA ± 3 Volts / ± 7.5 mA ± 5 Volts / ± 12.5 mA

10 11 12 13* 14 15* 16* 17* 18*

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

4 to 20 mA ± 10 mA ± 8 mA ± 12 mA ± 20 mA ± 10 Volts / ± 20 mA ± 2.5 Volts ± 100 mA ± 2.5 Volts / ± 6.2 mA

* at additional cost for other than ‘Basic’

* at additional cost

Flow Rate Model 27A50F Code gpm*

0M 1E 2F 3D 4K

0.18 0.4 0.9 1.8 3.5

scfm** C Factor*** Max Pressure

0.45 1.0 2.0 4.0 8.0

0.008 0.018 0.036 0.071 0.14

5000 psi 5000 psi 5000 psi 5000 psi 5000 psi

Std Lap

5% UL 5% UL 1% OL 10% OL 10% OL

1A 2B 3C 4D 5E 6F 7G

0.2 0.6 1.2 2.5 5.0 8.0 11.0

scfm** C Factor***

0.5 1.5 3.0 6.0 11.5 18 25

Code gpm*

3B 4D 5K

5.0 8.0 10.5

0.009 0.027 0.054 0.11 0.21 0.32 0.45

Max Pressure

5000 psi 5000 psi 5000 psi 5000 psi 3000 psi 2000 psi 1000 psi

* 4-way flow rating with hydraulic oil at 1000 psid

scfm**

11.5 18 24

C Factor*** Max Pressure

0.21 0.32 0.43

3000 psi 2000 psi 1000 psi

Std Lap

10% OL 10% OL 10% OL

Model 27E50F Code gpm*

Model 27B50F Code gpm*

Model 27C20F

3B 4A

10.0 15.0

scfm**

C Factor***

Max Pressure

23 34

0.41 0.61

5000 psi 5000 psi

scfm**

C Factor***

Max Pressure

46 68 92 136

.82 1.22 1.64 2.44

5000 psi 5000 psi 5000 psi 3000 psi

Model 27G50F Code gpm*

1F 3F 5F 9F

20.0 30.0 40.0 60.0

** 4-way flow rating with air at 100 psig

*** Per orifice

R-DDV Part Number, Jan 22, 2010.doc

Woodward HRT Part Number Selection  

Part number selection guide for Woodward HRT servo valves.

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