| R6H | Pipe couplings for hydraulic piping - coupling thread (ISO 6149) |
| R8H | Definitions and symbols of performance characteristics - pumps, motors and integral transmissions. (ISO 4391) |
| RP9H | Technical conditions of delivery |
| R10H | Hydraulic cylinder - Cylinder internal diameters and rod diameter - Sizes of threaded rods and ports - Nominal pressures - Piston strokes (ISO 3320, 3321, 3322, 4393, 4395, 7181, 8136, 8137, 8138) |
R11H |
Recommendations for installation, commissioning and maintenance of complete hydraulic systems. (ISO 4413) |
| RPI2H | Recommendations for starting, servicing and maintenance of hydraulic power pumps |
| RPI3H | Recommendations for starting, servicing and maintenance of hydraulic motors |
| RPI4H | Recommendations for starting, servicing and maintenance of complete hydraulic transmissions (ISO FDIS 4413) |
| RPI5H | Recommendations for starting, servicing and maintenance of hydraulic valves |
| RPI6H | Recommendations for starting, servicing and maintenance of hydraulic cylinders |
| RPI7H | Recommendations for starting, servicing and maintenance of hydraulic intensifiers |
| RPI8H | Recommendations for installation, commissioning and maintenance of hydraulic accumulators |
| R34 | Couplings for fluid power hoses (ISO 12151) |
| R35H | Mounting surfaces for hydraulic directional valves (RP 121H) |
| R39H | Schedule of required data for hydraulic fluids |
| RP41 | Hydraulic and pneumatic systems - Circuit diagrams. (ISO 1219-2) |
| RP47H | Recommendations for the design, manufacture and safe application of gas loaded hydraulic accumulators. (ISO 4413) |
| R48H | Evaluation of the anti-corrosive qualities of water based fire resistant fluids (ISO FDIS 4404) |
| RP55H | Schedule of fire resistant tests for fire resistant fluids |
| RP56H | Test method to determine the fire resistance of FR fluids using a CFR engine at variable compression speed (based on ASTM D 613-61T) |
| R58H | Hydraulic cylinders - 160 bar - Medium series - Mounting dimensions - Bores 25 to 500 mm (ISO 6020-1) |
| RP6OH | Specification for oil hydraulic piston rods (ISO 3320 & 3321) |
| RP62H | Definitions and symbols of the operating characteristics of gas-loaded hydraulic accumulators (ISO 5596) |
| RP63H | Square flange connections for hydraulic piping (ISO 6162, 6163, 6164) |
| RP64H | Effect of evaporation on flammability |
| RP65H | Manifold ignition test |
| RP66H | Wick test (ISO DIS 14935) |
| RP67H | Anti-wear vane pump test for hydraulic fluids |
| RP69H | Hydraulic fluid power - mounting surfaces for flow control, pressure control and check valves (RP12IH) |
| RP7OH | Identification code for the level of solid contaminant in hydraulic fluids (ISO 4406) |
| RP71 | Quantities, symbols and units of the international system (SI) to be used for fluid power (ISO 1000) |
| RP72H | Evaporation test for fire resistant fluid type HFC |
| RP73H | Hydraulic cylinders - 250 bar mounting dimensions - bores 50 to 500 mm (ISO 6022) |
| RP75H | Fluids for hydraulic transmissions -mineral oils- classification (ISO 6743-4) |
| RP76 | Outside diameters for tubes in fluid power applications (ISO 4397) |
| RP77H | Fluids for hydraulic transmissions - fire resistant fluids - classification (ISO 6743-4) |
| RP78H | Hydraulic cylinders tolerances (ISO 8131 & 8135) |
| RP80 | Cone type connection – 24º- for fluid power tubes and hoses (ISO 8434-1,8434-4,12151-2) |
| R8IH | Compatibility of hydraulic fluids with elastomeric materials (ISO 6072) |
| RP86H | Guidelines for the use of fire-resistant fluids in hydraulic systems (ISO 7745) |
| RP87H | Hydraulic cylinders - mounting dimensions for rod end plain eye (ISO 6981) |
| RP88H | Hydraulic cylinders - mounting dimensions for rod end spherical eye (ISO 6982) |
| R89H | Fluids for hydraulic systems - mineral oils - stability corrosion test |
| RP9IH | Fluids for hydraulic transmission mineral oils – specifications (ISO DIS 11158) |
| RP92H | Statement of requirements for filters in hydraulic systems (ISO 7744) |
| RP93H | Anti-wear test for hydraulic fluids using an internal gear type steering motor |
| RP94H | Determination of particulate matter in hydraulic fluids using an automatic size analyzer employing the light interruption principle (ISO/FDIS 11500) |
| RP95H | Recommended method for the bottle sampling of hydraulic fluids for particle counting. (ISO 4021) |
| RP96H | Hydraulic fluid power - cavities for two-portslip-in-cartridge valves (ISO 7368) |
| RP97H | Fluids for hydraulic transmission - fire-resistant fluids - specification (ISO DIS 12922) |
| RP98 | Guidelines for the specification, selection and application of hydraulic reservoir air breather filters (ISO 7744) |
| RP99H | Hydraulic fluid power - modular stack and directional control valves – sizes 03 and 05 - clamping dimensions (ISO 7790) |
| RP100 | Hydraulic and pneumatic fluid power glossary (ISO 5598) |
| RP101 | Lexicon of terms from the hydraulic and pneumatic fluid power glossary (ISO 5598) |
| RP104H | Hydraulic fluid power - acceptance test for hydraulic cylinders (ISO 10100) |
| RP106H | Hydraulic quick action couplings (ISO 7241 –1) |
| RP108H | Hydraulic fluid power 2, 3 and 4 port screw-in-cartridge valve cavities (ISO 7789) |
| RP109H | Hydraulic fluid power - Filter elements - Low temperature integrity test |
| RP110H | Fluids for hydraulic transmission - Fire-resistant fluids - Category HFA -Specifications (ISO DIS 12922 also 7745) |
| RP112H | Fluids for hydraulic transmissions - Mineral oil category HV - Method for determination of shear stability |
| RP113H | Fluids for hydraulic transmission - Disposal methods for used oil/water emulsions |
| RP115H | Hydraulic fluid power - Four port and five port servo-valves - Mounting surfaces (ISO 10372) |
| RP117H | Hydraulic fluid power - Flushing of hydraulic systems |
| RP118H | Guidelines to the contamination control in hydraulic fluid power systems |
| RP121H | Hydraulic fluid power - Mounting surfaces for flow directional, pressure control, check and flow control valves (ISO 4401, 5781, 6263, 6264) |
| RP122H | Viscosity Shear Stability of Hydraulic Oils (Taper Roller Bearing Rig) |
| RP123H | Classification of ecologically acceptable hydraulic fluids (ISO 6743-4) |
| RP124H | Procedure for the determination of the filterability of hydraulic and lubrication oils - procedure for dry oils (ISO DIS 13357-2) |
| RP4P | Pneumatic cylinders - Suggested data for inclusion as a minimum in manufacturer's sales and literature |
| RP5P | Specification for pneumatic cylinders |
| RPI9P | Pneumatic directional control valves - Recommended data for inclusion in manufacturer's sales literature |
| RP2OP | Pneumatic flow control valves - Recommended data for inclusion in manufacturer's sales literature |
| RP2IP | Pressure control valves |
| RP22P | Pneumatic shuttle, non-return and quick exhaust valves - Recommended data for inclusion in manufacturer's sales literature |
| RP23P | Pneumatic pressure intensifiers - Recommended data for inclusion in manufacturer's sales literature |
| RP24P | Pneumatic rectilinear piston type cylinders - Recommended data for inclusion in manufacturer's sales literature |
| RP25P | Filters and water traps |
| RP26P | Lubricators |
| RP27P | Air Dryers |
| RP28P | Connections - Recommended data for inclusion in manufacturer's sales literature |
| RP29P | Pneumatic quick action couplings - Recommended data for inclusion in manufacturer's sales literature (ISO 6150) |
| RP3OP | Pneumatic rotating and telescopic joints - Recommended data for inclusion in manufacturer's sales literature |
| RP37P | Recommended diameters for pneumatic tubes and hoses |
| RP38P | Guidance on relation between port threads and pipe hose diameters |
| RP40P | Hose couplings, claw type |
| RP41 | Hydraulic and pneumatic systems - Circuit diagrams (ISO 1219-2) |
| RP43P | Pneumatic cylinders - 10 bar operating - operating conditions and dimensions - bores 32 to 100mm |
| RP44P | Pneumatic fluid power glossary (ISO 5598) |
| RP46P | Units for fluid logic components and systems to be used in manufacturer's technical sales literature |
| RP49P | Technological symbols for fluid logic and related devices with and without moving parts (ISO 5784) |
| RP54P | Specification for polyamide tubing 11 and 12 for pneumatic transmissions |
| RP57P | Pressure relief valves - Recommended data for inclusion in manufacturer's technical sales literature |
| RP68P | Rules for the identification of ports and operators of pneumatic control valves and other pneumatic components (ISO DIS 11727) |
| RP71 | Quantities, symbols and units of the International System (SI) to be used for fluid power (ISO 1000) |
| RP76 | Outside diameters for tubes in fluid power applications (ISO 4397) |
| RP80 | Cone type connections - 24~ - for fluid power tubes and hoses (ISO 8434-1, 8434-4, 12151-2) |
| RP82P | Response time characteristics of pneumatic directional control valves (RP 111P) |
| RP85P | Characteristics of pneumatic components |
| RP105P | Acceptance test for pneumatic cylinders |
| RP107P | Fixed pivot bracket for pneumatic cylinders (ISO10099) |
| RP111P | Switching characteristics of pneumatic directional control valves and moving part logic components (ISO DIS 12238) |
| RP114P | Pneumatic valves, subplates for five-port valves with mounting surfaces in accordance with ISO 5599-1 |