Finding the correct hydraulic fitting starts with more than a thread name. The connection must match the thread system, sealing surface, tube or hose size, pressure requirements, material and installation conditions. This guide organizes Ruihua's hydraulic fitting range by product family so engineers, distributors and purchasing teams can move from an application requirement to a suitable product series.
Use this page as a catalog overview. For final selection, send the mating-port standard, thread size, hose or tube specification, working pressure, media, temperature range and preferred material. Ruihua can then confirm the appropriate drawing or part reference before an order is placed.
Hydraulic Product Families
Hydraulic Adapters
Hydraulic adapters connect ports, tubes and hoses with different thread or sealing systems. The product range includes straight, elbow, tee, bulkhead, swivel and plug configurations across commonly requested connection families such as JIC, ORFS, BSP, NPT/NPSM, SAE O-ring boss and metric connections.
When choosing an adapter, identify both ends separately. A fitting may have the same nominal size on each end while using different threads or sealing methods.
Hydraulic Hose Fittings
Hose fittings create the connection between a hydraulic hose and the equipment, manifold or adapter. Selection depends on the hose construction, ferrule or crimp system, end connection, installation angle and assembly procedure. Configurations represented on the site include straight, 45-degree and 90-degree hose ends with metric, BSP, JIC, ORFS and flange connections.
Always match the hose fitting and ferrule to the hose specification and validated crimp data. Similar-looking components should not be treated as interchangeable without confirmation.
Hydraulic Ferrules
Ferrules secure compatible hose and fitting components during crimping. The correct ferrule is determined by the hose type, reinforcement, outside diameter, fitting stem and assembly specification. Ruihua lists ferrule series for several common hydraulic hose constructions.
Hydraulic Quick Couplings
Quick couplings allow hydraulic lines to be connected and disconnected without removing a threaded fitting. Ruihua's listed coupling families include ISO 7241-A, ISO 7241-B, ISO 5675 and ISO 16028-style product groups, plus other application-specific couplings.
Selection should consider flow, pressure, valve style, connection frequency, residual pressure, contamination control and compatibility between the plug and socket.
How to Request the Correct Catalog Item
Provide as many of the following details as possible:
Connection type on both ends
Thread designation and nominal size
Sealing method, such as 24-degree cone, 37-degree flare, O-ring face seal, O-ring boss or tapered thread
Straight, 45-degree, 90-degree, tee or bulkhead configuration
Hose or tube specification
Working pressure and temperature
Fluid or media
Material and surface-finish requirements
Quantity and drawing, sample or cross-reference number
If the existing component is unidentified, send clear photos of the thread, sealing face and overall fitting together with measured outside diameter and thread pitch.
Why a Drawing Check Matters
Thread diameter alone does not identify a hydraulic fitting. Different standards can have similar diameters but different pitch, thread form or sealing geometry. A drawing review reduces the risk of leakage, damaged threads and incorrect assembly.
Frequently Asked Questions
Can I select a hydraulic fitting from a photo?
A photo helps, but final selection should also use thread diameter, pitch, sealing-face geometry and the mating-port standard.
Does the catalog include both adapters and hose fittings?
The site lists hydraulic adapters, hose fittings, ferrules and quick-coupling families. Ask for the current catalog or drawing set that covers the required category.
Can Ruihua cross-reference an existing part number?
Send the complete reference number and, where possible, a drawing or dimensional information. A match should be confirmed before ordering.
What information is required for a quotation?
Provide the connection, size, material, quantity and any relevant pressure, hose, tube or surface-finish requirements.
Need the latest hydraulic fittings catalog or help matching a part? Send the connection details, drawing, photo or reference number. Ruihua will review the application and recommend a relevant product series for confirmation.
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