ARP490F Electrohydraulic Servovalves

Revised

02/08/2008

Features
Issuing Committee
Scope
Content
This SAE Aerospace Recommended Practice (ARP) provides definitions and background information for understanding the physical performance, and test procedures of electrohydraulic flow control servovalves.
The recommendations are confined to interface definition and input/output characteristics. This ARP does not restrict or attempt to define the internal characteristics of servovalves. As such, the recommendations are equally applicable to valves having different internal functioning, different ratings, different physical size, and valves used with different fluids. In certain instances, standards for valve design are recommended for the purpose of interchangeability, as for example, valve polarity, mounting bolt and fluid port locations.
The ARP provides extensive guidance for the preparation of Procurement Specifications and for functional testing. A sample Procurement Specification is provided in Appendix A. The primary focus of this ARP is on four-way valves. Three-way valves are discussed to a limited extent and terminology for pressure control valves is presented in Appendix B.
This ARP is applicable to fluid power systems in all types of flight vehicles, and it is applicable to Military, Civil and Space design/certification standards. Additional specifications or specialized test procedures may be necessary to define special requirements for specific control systems, and such considerations are beyond the scope of this ARP.
Rationale
Content
This revision of SAE ARP490 document is a result of a scheduled periodic document review. It incorporates changes recommended by the SAE A-6 Panel and committee members.
Meta TagsDetails
DOI
https://doi.org/10.4271/ARP490F
Pages
76
Citation
SAE International Recommended Practice, Electrohydraulic Servovalves, SAE Standard ARP490F, Revised February 2008, Issued July 1958, https://doi.org/10.4271/ARP490F.
Additional Details
Publisher
Published
Feb 8, 2008
Product Code
ARP490F
Content Type
Recommended Practice
Status
Revised
Language
English