Precision-engineered hydraulic adapters for seamless connections between different thread types and sizes. Ensures leak-free fluid routing in high-pressure systems.
Hydraulic adapters are precision-machined fittings that connect mismatched threads, jump between sizes, or change fluid direction within a hydraulic system. This guide covers configurations, thread standards, materials, pressure ratings, and selection criteria to help you specify the right adapter for any hydraulic circuit.
A hydraulic adapter (also called a hydraulic fitting adapter, conversion adapter, or thread adapter) is a precision-machined component that joins two hydraulic ports of differing thread type, size, gender, or angle. Unlike standard fittings that terminate a hose or tube, adapters are intermediate connectors used to bridge legacy systems, integrate components from different standards, or redirect flow within a confined manifold.
DA Fluid supplies CNC-machined hydraulic adapters in carbon steel, stainless steel 304/316, and brass, with zinc-nickel, chrome, and PTFE coatings. Every adapter is dimensionally inspected to meet or exceed DIN, ISO 6149, SAE J514, JIC 37°, BSP, NPT, ORFS, and metric thread standards.
Our adapter portfolio covers every configuration used in modern hydraulic systems:
In-line connectors that join two ports of differing thread or size. Includes reducers, expanders, and gender changers. The most common adapter family.
Redirect flow at 45° or 90° angles. Used where hose routing must clear obstacles, reduce bend radius, or fit within tight engine bays and manifolds.
Split flow into two or three directions from a single source. Common in lubrication circuits, sensor branches, and dual-circuit hydraulic systems.
Pass through panel or tank walls with a sealed locknut. Ideal for reservoir mounting, gauge panels, and external pump connections.
Bridge between different thread standards (e.g. JIC to ORFS, BSPP to NPT, metric to SAE). Essential for global equipment with mixed-spec components.
360° rotating joint that prevents hose twist during assembly and operation. Critical for long-reach booms, articulated arms, and rotating equipment.
DA Fluid hydraulic adapters are deployed in every high-pressure hydraulic system worldwide:
Match material, thread standard, and pressure class to your hydraulic system requirements:
| Material | Thread Standards | Working Pressure | Typical Applications |
|---|---|---|---|
| Carbon Steel (Zinc-Nickel) | JIC, ORFS, NPT, BSP, Metric | Up to 420 bar | Mobile hydraulics, construction |
| Stainless Steel 304 | JIC, ORB, NPT, BSPP, SAE | Up to 350 bar | General industrial, chemical |
| Stainless Steel 316L | JIC, ORFS, NPT, BSPT, Metric | Up to 350 bar | Marine, offshore, pharma |
| Brass (CW617N) | BSP, NPT, Metric | Up to 80 bar | Pneumatic, low-pressure fluid |
| Carbon Steel (Chrome-Plated) | DIN 2353, ISO 6149, SAE J514 | Up to 500 bar | High-pressure systems, presses |
Need help selecting the right hydraulic adapter for your system? Contact our engineering team for thread drawings, torque specs, and a formal quotation within 24 hours.
Advanced CF ORFS male to ORFS female swivel run tee hydraulic adapter. Features an in-line ORFS male run port with a captive elastomeric face O-ring, an opposing in-line free-spinning ORFS female swivel nut, and a 90° ORFS male branch on a heavy-duty forged T-junction body. Delivers compact three-way flow distribution, twist-free in-line coupling, zero-clearance slip assembly, positive flat-face sealing, and superior blowout resistance in SAE J1453 and ISO 8434-3 ultra-high-pressure hydraulic systems.
Advanced BF ORFS male to ORFS female swivel branch tee hydraulic adapter. Features dual in-line O-Ring Face Seal (ORFS) male run ports with captive elastomeric face O-rings and a 90° center branch equipped with a free-spinning ORFS female swivel nut on a forged T-junction body. Delivers compact three-way flow distribution, twist-free branch connection, zero-clearance slip assembly, positive flat-face sealing, and superior blowout resistance in SAE J1453 and ISO 8434-3 ultra-high-pressure hydraulic systems.
Advanced AF ORFS male union tee hydraulic adapter. Features three symmetrical O-Ring Face Seal (ORFS) male ends with precision face retention grooves and captive elastomeric O-rings on a heavy-duty forged T-junction body. Delivers three-way fluid distribution, zero-clearance slip assembly, positive flat-face sealing, and superior blowout resistance in SAE J1453 and ISO 8434-3 ultra-high-pressure hydraulic systems.
Advanced 9F ORFS female swivel sealing cap hydraulic adapter. Features a free-spinning female UN/UNF threaded swivel nut enclosing a flat internal sealing face and heavy-duty blind core. Threads directly onto male O-Ring Face Seal (ORFS) fittings or line ends to deliver positive flat-face shutoff, complete contaminant exclusion, and superior blowout resistance in SAE J1453 and ISO 8434-3 ultra-high-pressure hydraulic systems.
Advanced 6F straight bulkhead ORFS male union hydraulic adapter. Features dual symmetrical O-Ring Face Seal (ORFS) male ends with captive face O-rings, an elongated threaded bulkhead section, and an integrated heavy-duty locknut. Delivers secure panel pass-through mounting, zero-clearance slip assembly, positive flat-face sealing, and superior blowout resistance in SAE J1453 and ISO 8434-3 ultra-high-pressure hydraulic systems.
Advanced 4F ORFS male plug hydraulic adapter. Features an O-Ring Face Seal (ORFS) male end with a precision face retention groove, captive elastomeric O-ring, and a solid heavy-duty hex body. Threads directly into ORFS female swivel nuts or ports to provide dependable flat-face shutoff, complete contaminant exclusion, and superior blowout resistance in SAE J1453 and ISO 8434-3 high-pressure industrial hydraulic systems.
Advanced 2F9 90° elbow ORFS male to ORFS female swivel hydraulic adapter. Features an O-Ring Face Seal (ORFS) male end with a captive elastomeric face O-ring, an independently rotating ORFS female swivel nut with a flat sealing face, and a forged right-angle body. Delivers compact 90° directional routing, twist-free zero-clearance servicing, positive elastomeric sealing, and superior blowout resistance in SAE J1453 and ISO 8434-3 ultra-high-pressure hydraulic circuits.
Advanced 3F straight ORFS female swivel union hydraulic adapter. Features dual symmetrical free-spinning O-Ring Face Seal (ORFS) female swivel nuts with precision-machined flat sealing faces flanking an integrated body. Delivers zero-clearance drop-in servicing, complete twist-free alignment between two fixed male ORFS connections, leak-proof elastomeric compression sealing, and superior blowout resistance in SAE J1453 and ISO 8434-3 ultra-high-pressure hydraulic systems.
Advanced 3F straight ORFS female swivel union hydraulic adapter. Features dual symmetrical free-spinning O-Ring Face Seal (ORFS) female swivel nuts with precision-machined flat sealing faces flanking an integrated body. Delivers zero-clearance drop-in servicing, complete twist-free alignment between two fixed male ORFS connections, leak-proof elastomeric compression sealing, and superior blowout resistance in SAE J1453 and ISO 8434-3 ultra-high-pressure hydraulic systems.
Advanced 2F straight ORFS male to ORFS female swivel hydraulic adapter. Features an O-Ring Face Seal (ORFS) male end with an embedded face O-ring, a free-spinning ORFS female swivel nut with a flat sealing face, and a solid hex body. Delivers zero-clearance slip assembly, twist-free line connection, positive elastomeric sealing, and superior blowout resistance in SAE J1453 and ISO 8434-3 ultra-high-pressure hydraulic circuits.
Advanced 1FG straight ORFS male to BSPP male O-ring hydraulic adapter. Features an O-Ring Face Seal (ORFS) male end with an embedded face seal and a parallel BSPP (G) male stud with shoulder O-ring, flanking a solid hex body. Delivers drop-in zero-clearance servicing, dual positive elastomeric sealing, and blowout-proof reliability in SAE J1453 and ISO 1179-2 / ISO 8434-3 high-pressure fluid power circuits.
Advanced 1FO straight ORFS male to SAE male O-ring boss (ORB) hydraulic adapter. Features an O-Ring Face Seal (ORFS) male end with a captive elastomeric seal and an SAE straight thread O-ring boss male stud with shoulder O-ring, flanking a solid hex body. Delivers zero-clearance drop-in assembly, dual positive elastomeric sealing, and blowout-proof reliability in SAE J1453 and SAE J1926-1 / ISO 11926-1 high-pressure systems.
Advanced 1F straight ORFS male union hex nipple hydraulic adapter. Features dual symmetrical O-Ring Face Seal (ORFS) male ends with precision-machined face grooves, captive elastomeric O-rings, and an integrated solid hex body. Delivers drop-in replacement ease, zero-clearance slip assembly, positive flat-face sealing, and superior blowout resistance in SAE J1453 / ISO 8434-3 ultra-high-pressure hydraulic systems.
Advanced GN NPT female union tee hydraulic adapter. Features three symmetrical precision-tapered National Pipe Taper (NPT) female threaded ports on a heavy-duty forged T-junction body. Delivers dependable three-way fluid distribution, thread-wedging mechanical dry sealing, and superior blowout resistance in ANSI/ASME B1.20.1 high-pressure industrial hydraulic and piping networks.
Advanced AN NPT male union tee hydraulic adapter. Features three symmetrical precision-tapered National Pipe Taper (NPT) male threaded ends on a heavy-duty forged T-junction body. Delivers three-way fluid distribution, dependable thread-wedging dry sealing, and superior blowout resistance in ANSI/ASME B1.20.1 high-pressure industrial hydraulic systems and process piping networks.
Advanced 2NU9 90° elbow NPT male to NPSM female swivel 60° cone hydraulic adapter. Features tapered NPT male pipe threads, a free-spinning NPSM straight mechanical swivel nut with an internal 60° cone seat, and a forged elbow body. Delivers compact right-angle routing, twist-free line alignment, metal-to-metal dry sealing, and superior blowout resistance in ANSI/ASME B1.20.1 high-pressure fluid power systems.
