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This SAE Aerospace Recommended Practice (ARP) is intended as a guide to define the requirements for aerospace hydraulic shuttle valves, including details pertinent to the design, performance, fabrication, and testing of the shuttle valves.

1. SCOPE This Aerospace Recommended Practice (ARP) provides recommendations for the design and test requirements for hydraulic priority valves. The hydraulic priority valve is intended for use in a civil or a military aircraft hydraulic system with a rated system pressure up to 5000 psi (34500 kPa). 1.1 Purpose The recommended requirements contained in this document are compiled for inclusion in a Procurement Specification for a hydraulic priority valve. NOTE: The recommended requirements in this ARP should be reviewed by the Purchaser or the Contractor and only those requirements that are applicable for a specific application should be incorporated in the Procurement Specification. 1.2 Classification The hydraulic priority valve types covered by this ARP are: • The line-mounted type - a valve with standard fitting ends • The cartridge type - a cylindrical valve with O-ring glands for mounting in a manifold, for example

The purpose of this recommended practice is to establish a general form which may be used as a guide in the preparation of detail specifications. This recommended practice shall not be used for procurement or be referred to in the detail specification.

The purpose of this recommended practice is to establish a general form which may be used as a guide in the preparation of detail specifications. This recommended practice shall not be used for procurement or be referred to in the detail specification.

This specification covers hand driven, hydraulic ram pumps used on type I (-65° to +160°F) aircraft hydraulic systems.

This specification covers hand driven, hydraulic ram pumps used on type I (-65° to +160°F) aircraft hydraulic systems.

This Aerospace Recommended Practice (ARP) provides recommendations for the design and test requirements for hydraulic flow regulators (also known as flow control valves). The hydraulic flow regulator is intended for use in a civil or a military aircraft hydraulic system with a rated system pressure up to 5000 psi (34500 kPa).

This SAE Aerospace Recommended Practice (ARP) establishes the requirements for the design, manufacture, and qualification of four hydraulic switching valves used in airborne applications. Two are pressure operated, Type IA and IB and two are solenoid/pilot operated, Type IIA and IIB. They are applicable to four pressure classes 3000, 4000, 5000 and 8000 psi. The equipment as designed is intended to be installed in hydraulic systems designed to AS5440 for military applications or ARP4752 and ARP4925 depending on the type of aircraft for commercial applications. Additional or refined requirements shall be contained in the detail (procurement) specification and these shall take precedence over any potentially conflicting requirements of this ARP or documents referenced by this ARP.

This SAE Aerospace Recommended Practice (ARP) establishes the general requirements for hydraulic thermal expansion relief valves used in aircraft and missile hydraulic systems having operating pressures and temperatures as identified in 1.2.

This recommended practice encompasses design, analysis, fabrication, and installation of pressurized plain metal tubing used in fluid power systems to provide relative motion. Specific data given are for MIL-T-6845 tubing ranging from 1/4 inch to 1 inch dia. used in 3000 psi hydraulic or pneumatic systems, Types I, II, III or IV applied to any type of vehicle. The flexible configurations of plain metal tubing are intended for application to actuators that oscillate about a pivot, to areas of large structural deflection such as reservoirs installation, and to areas of extreme environment where flexible hose could not survive.

This SAE Aerospace Recommended Practice (ARP) encompasses design, analysis, fabrication, and installation of pressurized metal tubing used in fluid power systems to provide relative motion. Specific data given are for MIL-T-6845 tubing ranging from 1/4 to 1 in (6.3 to 25 mm) to diameter used in 3000 psi (20.7 MPa) hydraulic or pneumatic system, Military Type I, II, III, or IV hydraulic systems applied to any type of vehicle. For information on design of coiled tube assemblies using Ti-3Al-2.5CWSR tubing, see ARP4146. The flexible configurations of tubing are intended for application to actuators that oscillate about a pivot, to areas of large structural deflection such as reservoirs installation, and to areas of extreme environment where flexible hose could not survive.

This SAE Aerospace Recommended Practice (ARP) addresses the design, installation, and testing of coiled tube assemblies ranging from 1/4 inch (6.3 mm) to 1.0 inch (25 mm) diameter using CRES tubing per AMS-T-6845, unless otherwise approved by the Procuring Activity. This ARP specifically details three different configurations of coiled tubing. These configurations should be compatible with pressure levels up to 3000 psi (20.7 MPa) upon the completion of the analysis for the actual stress and life requirement of the intended application. However, formal qualification tests are recommended to verify the satisfactory installation, clamping, and the life of each unique design. NOTE: Refer to ARP4146 for information on design of coiled tube assemblies using Titanium tubing.

This SAE Aerospace Recommended Practice (ARP) addresses the design, installation, and testing of coiled tube assemblies ranging from 1/4 inch (6.3 mm) to 1.0 inch (25 mm) diameter using CRES tubing per AMS-T-6845, unless otherwise approved by the Procuring Activity. This ARP specifically details three different configurations of coiled tubing. These configurations should be compatible with pressure levels up to 3000 psi (20.7 MPa) upon the completion of the analysis for the actual stress and life requirement of the intended application. However, formal qualification tests are recommended to verify the satisfactory installation, clamping, and the life of each unique design. NOTE: Refer to ARP4146 for information on design of coiled tube assemblies using Titanium tubing.

Scope unavailable.

This SAE Aerospace Recommended Practice (ARP) is intended as a guide to define the requirements for aerospace hydraulic relief valves, including details pertinent to the design, performance, fabrication, and testing of the relief valves. NOTE 1: This ARP is for hydraulic system full-flow relief valves; ARP4835 has been developed to specifically cover thermal relief valves. NOTE 2: This document does not cover the modification of cracking pressure by external input; either hydraulic, electric, or pneumatic.

This SAE Aerospace Recommended Practice (ARP) establishes the requirements for the design, manufacture, and qualification of four hydraulic switching valves used in airborne applications. Two are pressure operated, Type IA and IB and two are solenoid/pilot operated, Type IIA and IIB. They are applicable to four pressure classes 3000, 4000, 5000 and 8000 psi. The equipment as designed is intended to be installed in hydraulic systems designed to AS5440 for military applications or ARP4752 and ARP4925 depending on the type of aircraft for commercial applications. Additional or refined requirements shall be contained in the detail (procurement) specification and these shall take precedence over any potentially conflicting requirements of this ARP or documents referenced by this ARP.

This document is a compendium of recommended practices for the design of tubing systems for the transmission of liquid and gasses influid power systems for aerospace vehicles such as aircraft, missiles and boosters, and is considered applicable to the design of future space vehicles and other applications using aircraft technology. Primary emphasis is given to recommended practices for line sizing, tube routing, supports and clamping, stress considerations and permissible defects, and provisions for flexure through the use of flexible hoses, coiled tubes, swivel joints, and expansion glands. Fluid power systems are differentiated from the normal aircraft fuel and oil systems and the various fluid systems used for environmental control and air conditioning systems; however, the practices cited herein will in many cases be applicable to these other systems.

This SAE Aerospace Recommended Practice (ARP) establishes the general requirements for spring-loaded, normally closed check valves for use in Type I, Type II, or Type III aircraft and missile hydraulic systems having nominal operating pressure shown in Table 1.