Engineered for central fluid distribution and quadrant instrumentation branching, Pioneer Industries Brass Double Ferrule Union Crosses connect four tubing runs at 90-degree orthogonal axes within a rugged forged brass body rated up to 5,000 PSI.
The Brass Double Ferrule Union Cross is a four-way fitting that interconnects four equal-diameter tubing lines intersecting at 90-degree right angles. It serves as a central distribution hub for branching a single fluid supply into three separate circuits, or combining multiple sample streams into a common header.
Each cross body is hot-forged from high-tensile brass alloy (ASTM B283 CW617N / C37700), yielding a continuous metallurgical grain structure that withstands high internal pressure, thermal expansion, and mechanical piping loads without stress cracking.
Exported internationally by Pioneer Industries Mumbai to control panel builders, pneumatic system integrators, and industrial automation facilities.
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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CNC-machined from robust one-piece forgings, the union cross eliminates the multiple welded joints or threaded tees required by conventional distribution manifolds.
All four ports incorporate Pioneer precision-ground 20° seating tapers and silver-plated nut threads for uniform, low-torque swaging across all connections.
Metric tubing 6 mm to 25 mm OD (MPUC Series) and fractional tubing 1/8" to 1" OD (IPUC Series).
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 |
|---|---|---|---|---|---|---|---|---|---|
| MPUC-03 | 3 | 2.4 | 9.5 | 12 | 12.9 | 15.3 | 15.7 | 22.3 | 5,000 PSI / 345 Bar |
| MPUC-06 | 6 | 4.8 | 12.7 | 14 | 15.3 | 17.7 | 19.6 | 27.0 | 5,000 PSI / 345 Bar |
| MPUC-08 | 8 | 6.4 | 14.3 | 16 | 16.2 | 18.6 | 21.3 | 28.8 | 5,000 PSI / 345 Bar |
| MPUC-10 | 10 | 7.9 | 17.5 | 19 | 17.2 | 19.5 | 23.9 | 31.5 | 5,000 PSI / 345 Bar |
| MPUC-12 | 12 | 9.5 | 20.6 | 22 | 22.8 | 22.0 | 25.9 | 36.0 | 5,000 PSI / 345 Bar |
| MPUC-16 | 16 | 12.7 | 25.4 | 25 | 24.4 | 22.0 | 28.7 | 38.8 | 5,000 PSI / 345 Bar |
| MPUC-18 | 18 | 15.1 | 27.0 | 30 | 24.4 | 22.0 | 29.7 | 39.8 | 5,000 PSI / 345 Bar |
| MPUC-20 | 20 | 15.9 | 31.8 | 32 | 26.0 | 22.0 | 32.5 | 42.6 | 5,000 PSI / 345 Bar |
| MPUC-25 | 25 | 21.8 | 36.0 | 38 | 31.3 | 22.0 | 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 |
|---|---|---|---|---|---|---|---|---|---|
| IPUC-01 | 1/16 | 1.27 | 3/8 | 5/16 | 8.63 | 10.91 | 14.00 | 25.15 | 5,000 PSI / 345 Bar |
| IPUC-02 | 1/8 | 2.28 | 3/8 | 7/16 | 12.70 | 15.24 | 15.74 | 35.56 | 5,000 PSI / 345 Bar |
| IPUC-03 | 3/16 | 3.04 | 1/2 | 1/2 | 13.71 | 16.00 | 17.78 | 37.33 | 5,000 PSI / 345 Bar |
| IPUC-04 | 1/4 | 4.82 | 1/2 | 9/16 | 15.24 | 17.78 | 19.55 | 40.89 | 5,000 PSI / 345 Bar |
| IPUC-05 | 5/16 | 6.35 | 1/2 | 5/8 | 16.25 | 18.54 | 21.33 | 42.92 | 5,000 PSI / 345 Bar |
| IPUC-06 | 3/8 | 7.11 | 11/16 | 11/16 | 16.76 | 19.30 | 23.11 | 44.95 | 5,000 PSI / 345 Bar |
| IPUC-08 | 1/2 | 10.41 | 13/16 | 7/8 | 22.86 | 21.84 | 25.90 | 51.30 | 5,000 PSI / 345 Bar |
| IPUC-10 | 5/8 | 12.70 | 13/16 | 1 | 24.38 | 21.84 | 28.70 | 52.07 | 5,000 PSI / 345 Bar |
| IPUC-12 | 3/4 | 15.74 | 1 | 1-1/8 | 24.38 | 21.84 | 29.71 | 53.59 | 5,000 PSI / 345 Bar |
| IPUC-14 | 7/8 | 18.28 | 1-1/4 | 1-1/4 | 25.90 | 21.84 | 34.54 | 55.37 | 5,000 PSI / 345 Bar |
| IPUC-16 | 1 | 22.35 | 1-27/64 | 1-1/2 | 31.24 | 26.41 | 36.83 | 64.77 | 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 Union Cross 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 Union Cross components are deployed across demanding industrial instrumentation, process lines, and pneumatic circuits, including:
Distributing compressed air from a single supply to three independent pneumatic actuators.
Connecting three redundant pressure transmitters to a single process impulse line.
Equally dividing chilled water streams to multiple machine spindle jackets.
Combining multiple analytical effluent streams into a common atmospheric exhaust line.
Distributing metered oil or grease equally to four surrounding bearing points.
Interconnecting master reference gauges, transducers, and bleed valves.
Vibration-resistant four-way distribution on shipboard engine monitoring skids.
Distributing liquid chemical reagent equally across four parallel reaction vessels.
Pioneer Industries’ Brass Double Ferrule Union Cross 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 Union Cross.
A Brass Double Ferrule Union Cross is a 4-way fitting that connects four equal-diameter tubes at 90-degree angles to each other, using double-ferrule compression assemblies on all four ports.
A cross replaces two tees and an intermediate nipple, saving space, reducing installation time by 50%, and eliminating two potential leak paths.
Metric Series MPUC covers 6mm to 25mm tube OD, and Fractional Series IPUC covers 1/8″ to 1″ tube OD.
Rated up to 5,000 PSI (345 Bar) for sizes 1/8″ to 1/4″ and up to 3,200 PSI for 1/2″ size per ASME B31.3.
Hot-forged brass conforming to ASTM B283 CW617N / C37700 or extruded brass bar stock ASTM B16 Alloy C36000.
Insert each tube squarely into its respective port until bottomed, hand-tighten the nuts, and tighten 1-1/4 turns with a wrench.
Yes. Any of the four tube connections can be disconnected and remade independently without disturbing the remaining three ports.
In high-vibration applications, mount the cross body securely to an equipment panel or strut channel to isolate connected tubing from cantilever stress.
Yes, precision twin-ferrule mechanical swaging ensures vacuum sealing down to 1 × 10⁻⁹ mbar·l/s.
EN 10204 Type 3.1 Material Test Certificates, hydrostatic test records, and dimensional inspection reports.
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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.
