90 Degree One-Piece ORFS Female Elbow Fitting: 24291-RW Series

Why This 90 Degree One-Piece ORFS Female Fitting Passes the Compliance Gate

The 90 degree one-piece ORFS female fitting in the 24291-RW series is a right-angle hydraulic hose fitting whose insert and elbow body are machined as a single piece rather than joined by a brazed or welded seam. That construction removes a potential leak path and adds fatigue strength at the bend, which matters on high-impulse and high-vibration circuits. The ORFS end seals on a flat metal face with a captive O-ring, so it stays leak-tight without sealant and is quick to service in the field. For OEM builders, distributors, and repair shops, the 24291-RW is a drop-in route to the ORFS geometry printed on the drawing (ISO 12151-1 / SAE J516 on the sheet).

Core Advantages

• True one-piece body. Insert and elbow are one machined piece, so there is no brazed or welded joint to crack or weep under pressure and vibration.
• O-ring face seal reliability. A flat-face ORFS swivel nut with a compressed O-ring tolerates high pressure and reseals after service without tape or paste.
• Wide size coverage. Eight ORFS threads from 9/16″X18 up to 2″X12 pair with hose dashes 04 to 24, covering light through heavy duty circuits from one family.
• Traceable quality. Material certificates, 100% pressure testing, and batch-level traceability ship with every order to satisfy incoming inspection.

Technical Specifications

What Is an ORFS Female Hydraulic Hose Fitting?

ORFS means O-Ring Face Seal. The port face is flat and carries a machined groove that holds an O-ring, while the fitting has a female swivel nut that presses the two flat faces together until the O-ring is compressed. The seal is made by that compressed O-ring, not by a cone or taper, so the faces must stay clean and scratch-free and the O-ring must be sound.

An ORFS female end is not interchangeable with other North American end styles. ORB (SAE J1926 / ISO 11926) uses a straight thread with an O-ring on a boss face, while JIC 37 degree (SAE J514) and SAE 45 degree (SAE J513) both seal on a metal cone. To identify ORFS, look for a flat end face with an O-ring groove and measure the thread, since an ORFS nut is usually one sixteenth of an inch larger than the JIC nut of the same hose size.

The one-piece 24291-RW body is machined rather than assembled, so the 90 degree bend is seamless and there is no joint to fail. Match the thread dash in column one to your port, choose the hose dash in column two, then check the leg dimensions A and H against the routing envelope.

Dimensional Data

The letters below are marked directly on the drawings in the specification sheet (24291-RW, 24291-TRW). Read them as dimensioned on the drawing.

The sheet shows the one-piece variants labelled 24291-RW and 24291-TRW. Part numbers carrying a T or a W suffix (for example 24291-06-05TRW or 24291-20-20WRW) follow the corresponding drawing variant. Where a tolerance-critical stack-up is involved, confirm A, H, and C against the customer drawing before release.

Full Dimension Table (Part Number Matrix)

All dimensions are in millimetres and are transcribed from the 24291-RW specification sheet. The part number reads as series 24291, thread dash, hose dash, then the RW one-piece suffix, for example 24291-08-08RW = 13/16″X16 ORFS thread on a -08 hose.

Braided and spiral note (from the drawing): the part numbers in this table are for braided hose. When the same one-piece elbow is used on spiral (interlock) hose, change the code to 24292-XX-XXRW as noted on the sheet, or select the 24293-W interlock series.

Material and Heat Treatment

Working Pressure and Operating Envelope

The working pressure of a finished 90 degree one-piece ORFS female fitting is set by both the end connection standard and the hose it is crimped onto, so always use the lower of the two ratings. Every fitting is pressure tested at the factory before it ships, and a matching torque and crimp data table is supplied with the order so the assembly is built to the right specification.

The ORFS seal suits typical hydraulic temperature ranges of about -40 degrees C to +120 degrees C, with the exact limit set by the hose tube and the O-ring compound. Derate the assembly for high-temperature, high-impulse, or aggressive-fluid duty and confirm the one-piece body rating against your system pressure.

Selection and Ordering

How to Read the Part Number Matrix

Each part number is built from four blocks, and reading them in order tells you everything you need. Use the matrix row that matches both your port thread and your hose dash, then confirm the leg dimensions A and H fit the routing space.

• Block 1, series: 91 means a 90 degree ORFS female elbow (24291 family).
• Block 2, thread dash: the ORFS thread, for example 04 = 9/16″X18, 08 = 13/16″X16, 12 = 1.3/16″X12, 16 = 1.7/16″X12.
• Block 3, hose dash: the hose bore, for example -06 = DN10, -08 = DN12, -12 = DN20.
• Block 4, RW suffix: one-piece body; a leading T or W (TRW / WRW) follows the 24291-TRW or 24291-WRW drawing variant.

Thread Size and Dash Chart

Cross Reference Service

Send us an OEM number, a competitor catalogue number, or an old drawing number and our engineering team will translate it into the closest 90 degree one-piece ORFS female fitting part number, including thread dash and hose dash. We confirm the thread and the seal style first, then map the leg dimensions of the 90 degree one-piece ORFS female fitting, so the replacement drops into your existing assembly without guesswork. Custom thread, custom leg length, and private-label marking are all available.

Packaging and Logistics

Fittings are packed 10 pieces per box, with a batch box label that carries the part number, thread, hose dash, material, and heat number. Export cartons are palletised and shrink-wrapped for sea and air freight. Country of origin is Made in China, brand HENGHUA, and material test reports (MTR) travel with the shipment on request. Bulk and repeat-order pricing is available for OEM and distributor programmes, and every carton of this 90 degree one-piece ORFS female fitting is batch-labelled for full traceability.

Assembly and Use Guide

Four-Step Crimping Procedure

1. Cut the hose square with a vertical cut and remove any debris so the end is clean and burr-free.
2. Mark the insertion depth on the hose cover so the fitting is pushed on the full, measured distance.
3. Lubricate the hose bore and the fitting insert with a compatible grease and push the fitting in to the mark.
4. Crimp to the published crimp diameter, then verify the finished crimp outside diameter with a vernier caliper against the data table.

Connecting the ORFS End

Clean the flat faces of both the fitting and the port, and make sure no oil film, dirt, or burrs are left behind. Inspect the O-ring for cuts or hardening and replace it if there is any doubt, then hand-tighten the swivel nut until the faces touch. Finish with a torque wrench to the value in the supplied data table, and clock the 90 degree elbow to the required position before the final pull.

Never wrap PTFE tape or apply sealant on an ORFS joint. The seal is made by the compressed O-ring on the flat face, and tape or paste can shift under pressure and block a passage. Protect the face from scratches during handling, because a scored face will leak even with a new O-ring.

Installation Warnings

• Do not mix ORFS with JIC 37 degree, ORB, or SAE 45 degree ends. The threads and the seal geometry differ, and forcing them damages both parts.
• Do not reuse an O-ring that is cut, flattened, or hardened, and never install the end without an O-ring.
• Do not use a scratched or contaminated flat face; a damaged face cannot seal.
• Do not crimp without the data table; an out-of-spec crimp is the most common cause of a weeping joint.

Correct practice: verify the thread with a gauge, keep the face clean, use a new O-ring, torque to the published value, and clock the elbow before the final pull.

OEM Customization and Quality Traceability

Customization Options

• Laser marking of your logo, part number, and batch code on the fitting body.
• Custom thread sizes and custom leg lengths A and H for special routing needs.
• Choice of carbon steel or 304 / 316L stainless steel, and trivalent zinc, zinc-nickel, or Dacromet finish.
• Private-label packaging and mixed-kit boxes for distributor programmes.

Quality and Traceability System

Every batch is carburized and hardened to HRC 20-28, then 100% pressure tested and thread-gauged before packing. Material test reports, dimensional reports, and batch traceability records are available with the order, and third-party inspection such as BV or SGS can be arranged on request. Each box carries a batch label that links the parts back to the heat number and the inspection record.

FAQ

What is a 90 degree one-piece ORFS female fitting? It is a right-angle hydraulic hose fitting whose elbow body and insert are machined as one piece, so there is no brazed or welded seam. The end is a female ORFS swivel nut that seals on a flat face with a captive O-ring, and the RW suffix marks the one-piece construction.

How is one-piece different from a standard crimp elbow? A standard elbow can be assembled or joined at the bend, while the 24291-RW is machined from one piece. That removes a joint that could crack or weep and improves fatigue life at the bend on high-impulse circuits.

How do I tell ORFS apart from JIC or ORB? Look at the end face. ORFS has a flat face with an O-ring groove; JIC 37 degree and SAE 45 degree have a metal cone; ORB has a straight thread with an O-ring on a boss. An ORFS nut is usually one sixteenth of an inch larger than the same-size JIC nut.

Do I need PTFE tape or sealant? No. The O-ring makes the seal on the flat face, so tape and paste are not needed and can actually cause problems. Keep the face clean, use a good O-ring, and torque to the data table.

Can I replace the O-ring? Yes. The O-ring is a service part. Use the correct ORFS O-ring for the thread size, keep the groove clean, and never reuse a cut or hardened ring.

What is the difference between the 24291-RW and the 24293-W? The 24291-RW 90 degree one-piece ORFS female fitting is for braided hose, and its spiral-hose code changes to 24292-XX-XXRW as noted on the sheet. The 24293-W is the interlock version built for spiral hose.

Can you customise the elbow? Yes. We offer custom threads, custom leg lengths, laser marking, private-label packaging, and a choice of material and surface finish.

How fast can you quote? Send the thread size, hose dash, quantity, and any OEM number, and we return a quotation within 24 hours.

Solicitar um orçamento

Send your thread size, hose dash, quantity, and any OEM or drawing number, and the HENGHUA team will confirm the exact 24291-RW part number and quote within 24 hours. Ask for our crimp and torque data table with your first order.

Browse the full Acessórios hidráulicos ORFS range for the complete family, or contact us to request a quote, mill test reports, and samples.