Engineered for routing instrumentation tubing around sharp 90-degree corners without tube kinking or flow restriction, Pioneer Industries Brass Double Ferrule Elbow Unions provide leak-tight mechanical swaging and vibration resistance up to 5,000 PSI.
The Brass Double Ferrule Elbow Union (Equal 90-Degree Tube-to-Tube Elbow) connects two tubes of identical outer diameter at a precise right angle. When routing high-pressure instrumentation lines in crowded control cabinets or machinery frames, tube bending radius limitations can cause tube kinking or ovality.
Pioneer Elbow Unions solve this by offering smooth internal bore transitions and forged brass body construction, minimizing pressure drop while ensuring a 100% leak-proof dual-ferrule mechanical seal on both ports.
Manufactured by Pioneer Industries Mumbai, our Brass Elbow Unions are exported worldwide to process automation builders, naval shipyards, and instrumentation engineers across 85+ countries.
Components are precision CNC-machined from premium extruded brass (IS 319 / ASTM B16 / CW614N) with micro-smooth surface finishes. Every production lot undergoes rigorous metallurgical spectrometry, optical CMM dimensional checks, and helium leak detection, accompanied by authentic EN 10204 Type 3.1 Mill Test Certificates.
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Forged from high-density brass (ASTM B283 CW617N / IS 8737) or machined from extruded bar stock (ASTM B16 C36000), these 90-degree elbows resist mechanical vibration and thermal cycling.
Each port features twin-ferrule mechanical swaging: front ferrule creates the primary fluid seal, while back ferrule dampens impulse vibration.
Metric tubing sizes 2 mm to 25 mm OD (MPEU Series) and imperial sizes 1/16" to 1" OD (IPEU Series). Rated up to 5,000 PSI with 4:1 safety factor.
Explore comprehensive engineering dimensional configurations for Metric Series and Fractional Series, Operating Parameters, and Certified Metallurgy. Manufactured according to ASME B31.3, ISO 19879, and international instrumentation standards.
| Part No. | Tube O.D. T mm | E mm | h mm | H mm | F | G | l | L | Working Pressure |
|---|---|---|---|---|---|---|---|---|---|
| MPEU – 02 | 2 | 1.7 | 9.5 | 12 | 12.9 | 15.3 | 15.7 | 22.3 | 5,000 PSI / 345 Bar |
| MPEU – 03 | 3 | 2.4 | 9.5 | 12 | 12.9 | 15.3 | 15.7 | 22.3 | 5,000 PSI / 345 Bar |
| MPEU – 04 | 4 | 2.4 | 12.7 | 12 | 13.7 | 16.4 | 18.8 | 25.4 | 5,000 PSI / 345 Bar |
| MPEU – 06 | 6 | 4.8 | 12.7 | 14 | 15.3 | 17.7 | 19.6 | 27.0 | 5,000 PSI / 345 Bar |
| MPEU – 08 | 8 | 6.4 | 14.3 | 16 | 16.2 | 18.6 | 21.3 | 28.8 | 5,000 PSI / 345 Bar |
| MPEU – 10 | 10 | 7.9 | 17.5 | 19 | 17.2 | 19.5 | 23.9 | 31.5 | 5,000 PSI / 345 Bar |
| MPEU – 12 | 12 | 9.5 | 20.6 | 22 | 22.8 | 22.0 | 25.9 | 36.0 | 5,000 PSI / 345 Bar |
| MPEU – 15 | 15 | 11.9 | 25.4 | 25 | 24.4 | 22.0 | 28.7 | 38.8 | 5,000 PSI / 345 Bar |
| MPEU – 16 | 16 | 12.7 | 25.4 | 25 | 24.4 | 22.0 | 28.7 | 38.8 | 5,000 PSI / 345 Bar |
| MPEU – 18 | 18 | 15.1 | 27.0 | 30 | 24.4 | 22.0 | 29.7 | 39.8 | 5,000 PSI / 345 Bar |
| MPEU – 20 | 20 | 15.9 | 31.8 | 32 | 26.0 | 22.0 | 32.5 | 42.6 | 5,000 PSI / 345 Bar |
| MPEU – 22 | 22 | 18.3 | 31.8 | 32 | 26.0 | 22.0 | 32.5 | 42.6 | 5,000 PSI / 345 Bar |
| MPEU – 25 | 25 | 21.8 | 36.0 | 38 | 31.3 | 26.5 | 36.8 | 49.1 | 5,000 PSI / 345 Bar |
| Part No. | Tube O.D. T in | E Min | h in | H in | F | G | l | L | Working Pressure |
|---|---|---|---|---|---|---|---|---|---|
| IPEU-01 | 1/16 | 1.27 | 3/8 | 5/16 | 8.63 | 10.92 | 14.00 | 17.88 | 5,000 PSI / 345 Bar |
| IPEU-02 | 1/8 | 2.28 | 3/8 | 7/16 | 12.70 | 15.24 | 15.74 | 22.35 | 5,000 PSI / 345 Bar |
| IPEU-03 | 3/16 | 3.04 | 1/2 | 1/2 | 13.71 | 16.00 | 17.78 | 24.38 | 5,000 PSI / 345 Bar |
| IPEU-04 | 1/4 | 4.82 | 1/2 | 9/16 | 15.24 | 17.78 | 19.55 | 26.92 | 5,000 PSI / 345 Bar |
| IPEU-05 | 5/16 | 6.35 | 9/16 | 5/8 | 16.25 | 18.54 | 21.33 | 28.70 | 5,000 PSI / 345 Bar |
| IPEU-06 | 3/8 | 7.11 | 5/8 | 11/16 | 16.76 | 19.30 | 23.11 | 30.48 | 5,000 PSI / 345 Bar |
| IPEU-08 | 1/2 | 10.41 | 13/16 | 7/8 | 22.86 | 21.84 | 25.90 | 36.06 | 5,000 PSI / 345 Bar |
| IPEU-10 | 5/8 | 12.70 | 15/16 | 1 | 24.38 | 21.84 | 28.70 | 38.80 | 5,000 PSI / 345 Bar |
| IPEU-12 | 3/4 | 15.74 | 1-1/16 | 1-1/8 | 24.38 | 21.84 | 29.71 | 39.87 | 5,000 PSI / 345 Bar |
| IPEU-14 | 7/8 | 18.28 | 1-1/4 | 1-1/4 | 25.90 | 21.84 | 34.54 | 44.70 | 5,000 PSI / 345 Bar |
| IPEU-16 | 1 | 22.35 | 1-27/64 | 1-1/2 | 31.24 | 26.41 | 36.83 | 49.02 | 5,000 PSI / 345 Bar |
| Operating Parameter | Standard Specification | Severe Service / High-Pressure Rating |
|---|---|---|
| Fluid Media Compatibility | Compressed Air, Mineral Oils, Hydraulic Fluids, Inert Gases | Natural Gas, Vacuum lines, Steam & Glycol circuits |
| Working Pressure Range | Vacuum to 5,000 PSI (345 Bar) depending on tube size | Proof pressure tested to 1.5× design working pressure |
| Helium Leak Integrity | < 1 × 10⁻⁹ mbar·l/s | Suitable for ultra-clean analytical & vacuum systems |
| Temperature Envelope | -200°C to +200°C (-328°F to +392°F) | Cryogenic to moderate steam and hot oil service |
| Turns From Finger-Tight | 1-1/4 Turns (sizes 1/4" to 1" / 6mm to 25mm) | 3/4 Turn (sizes 1/16" to 3/16" / 2mm to 4mm) |
| Compatible Tubing | Seamless Copper (ASTM B75, B88), Brass (ASTM B135) | Nylon, PU, PTFE (with Pioneer brass tube inserts) |
Pioneer Industries manufactures Brass Double Ferrule Elbow Union using high-tensile extruded brass bar stock and forgings with controlled microstructural annealing:
| Component / Grade | Material Standard | Composition / Chemistry |
|---|---|---|
| Fitting Body / Bar | ASTM B16 / IS 319 Gr. 1 / CW614N | Cu: 60.0–63.0%, Pb: 2.5–3.7%, Fe: 0.35% Max, Zn: Balance |
| Forged Elbows / Tees | ASTM B283 / CW617N C37700 | Cu: 57.0–60.0%, Pb: 1.5–2.5%, Fe: 0.30% Max, Zn: Balance |
| Front & Back Ferrules | ASTM B16 / Cold-Worked Annealed | Controlled Alpha-Beta phase balance for clean collet swaging |
| Optional Naval Brass | ASTM B21 / CW712R C46400 | Cu: 59.0–62.0%, Sn: 0.5–1.0%, Pb: 0.20% Max, Zn: Balance |
Our manufacturing, swaging tolerances, and quality verification strictly adhere to international engineering benchmarks:
Brass Double Ferrule Elbow Union components are deployed across demanding industrial instrumentation, process lines, and pneumatic circuits, including:
Clean 90-degree turns along control enclosure internal walls and cable trays.
Routing impulse tubing into side-entry transmitter sensor ports.
Corner connections on distribution manifold blocks and solenoid racks.
Directing lube oil lines tightly around compressor casings and motor housings.
Compact right-angle tubing turns inside naval bridge and engine room control consoles.
Turning sample tubing into chromatograph and mass spectrometer sample inlets.
90-degree connections on refrigerant monitoring lines and pressure switches.
Connecting tubing neatly under bench countertops and display panels.
Pioneer Industries’ Brass Double Ferrule Elbow Union components are trusted across critical global industrial sectors:
Expert engineering insights and technical guidance regarding swaging mechanics, pressure thresholds, tubing compatibility, and installation protocols for Brass Double Ferrule Elbow Union.
A Brass Double Ferrule Elbow Union is an equal 90-degree fitting designed to connect two instrumentation tubes of the same outer diameter at a right angle, providing a permanent, leak-proof mechanical joint without requiring tight tube bending.
While tube benders are useful for gentle curves, tight 90-degree turns in compact enclosures often exceed minimum tube bend radii, risking wall thinning, ovality, or kinking. An elbow union guarantees a precise right angle with full bore flow.
Metric Series MPEU covers 2 mm to 25 mm OD, while Fractional Series IPEU covers 1/16″ to 1″ OD. Both series are stocked for immediate dispatch.
Rated up to 5,000 PSI (345 Bar) for smaller diameters (1/16″ to 1/4″ / 2mm to 6mm) and up to 3,200 PSI for 1/2″ (12mm), meeting ASME B31.3 requirements.
Forged bodies are manufactured from hot-forged brass conforming to ASTM B283 C37700 or CW617N, while bar stock bodies conform to ASTM B16 C36000.
Bottom each tube squarely against the internal body shoulder, tighten the nut finger-tight, and wrench-tighten 1-1/4 turns (3/4 turn for sizes under 1/4″). Hold the elbow body with a backup wrench during tightening.
No. Each port functions independently. Tightening or loosening one nut has zero effect on the opposite swaged tube joint.
Yes. The joint can be disassembled and remade dozens of times by reinserting the swaged tube and tightening the nut approx. 1/12 to 1/6 turn past snug.
Yes. Certified helium leak tight (< 1 × 10⁻⁹ mbar·l/s) and tested for vacuum service down to -750 mmHg.
EN 10204 Type 3.1 Material Test Certificates, optical inspection reports, and hydrostatic proof test data.
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Note: Please note that the information on this document is for illustration purposes only as information may vary with individual products, their grade and applications industries or uses and therefore cannot be guaranteed as accurate. © Copyright 2026 by Pioneer Industries. All Rights Reserved.
