Brass Flare Union
Brass Flare Union
036-DFU
The DUTUX Brass Flare Union is a precision-engineered fitting designed to connect two flare tubes securely, ensuring a reliable and leak-proof joint in HVAC, refrigeration, hydraulic, and fluid transfer systems. Manufactured from premium brass / copper alloy, this fitting offers excellent durability, corrosion resistance, and long service life even in demanding environments.
Brass Flare Unions create a strong metal-to-metal seal through precision-machined flare connections, eliminating the need for additional sealing materials. This ensures efficient and secure connections in high-pressure and vibration-prone systems.
Widely used in air conditioning, refrigeration equipment, hydraulic machinery, marine systems, and industrial piping installations, DUTUX Brass Flare Unions provide dependable performance, accurate threading, and easy installation.
Key Features
- Manufactured from forged brass for superior strength and crack resistance
- Provides secure and leak-proof flare tube connections
- Excellent corrosion resistance for long service life
- Precision threads manufactured according to International Go & No-Go Gauge standards
- Deep groove design for maximum pull-out resistance
- High dimensional accuracy for precise fitting
- Smooth internal and external surfaces for improved performance
- Suitable for high-pressure and vibration environments
- High heat transfer efficiency
- Easy installation and maintenance
OEM & Customization Capabilities
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Valve body material (e.g., nickel-plated brass)
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Connection types and sizes
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Service port inclusion
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Branding/logo engraving
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Packaging and labeling
Applications
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Commercial refrigeration systems
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Industrial cooling units
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HVAC systems
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Cold storage equipment
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Marine and automotive AC systems
Why Choose Us?
- Over 15 years of valve manufacturing expertise
- Strict quality control & pressure testing
- Competitive pricing for bulk/OEM orders
- Fast lead times and worldwide shipping
Product Specifications
Part No. Size DUTUX BFU 316 3/16″ × 3/16″ DUTUX BFU 14 1/4″ × 1/4″ DUTUX BFU 516 5/16″ × 5/16″ DUTUX BFU 38 3/8″ × 3/8″ DUTUX BFU 12 1/2″ × 1/2″ DUTUX BFU 58 5/8″ × 5/8″ DUTUX BFU 34 3/4″ × 3/4″ DUTUX BFU 78 7/8″ × 7/8″
Material
Brass / Copper Alloy
Free Cutting Brass IS 319 Type (I)
Free Cutting Brass as per BS 249 Type (I)Other available grades:
CZ121
CZ131
C3604
CDA360
DTD627
Packing Details
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Poly Bag Packaging
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Box Packing
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Inner Plastic Packing
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Carton Packaging
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Wooden Carton Packing (Export Packaging)
Order Details
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MOQ: 1000 Pieces
Lead Time: 3 Working Days
Available Price Terms:
EX-Work
FOB – Free On Board
C&F – Cost and Freight
CIF – Cost, Insurance and Freight
Brass Flare Union
036-DFU
The Brass Flare Union is a high-quality fitting designed to connect two flared tubes securely, ensuring a strong and leak-proof connection in various piping systems. Manufactured from premium forged brass alloys such as CW617N or C37700, this fitting provides excellent mechanical strength, corrosion resistance, and long service life.
The flare connection creates a reliable metal-to-metal seal, eliminating the need for additional sealing materials while ensuring dependable performance in high-pressure and vibration-prone environments. Precision machining and strict quality control ensure accurate threading, smooth internal surfaces, and high dimensional accuracy.
Brass Flare Unions are widely used in HVAC systems, refrigeration equipment, hydraulic systems, gas distribution lines, and industrial fluid handling applications, where secure tube-to-tube connections are essential for system efficiency and safety.
Key Features
Material Excellence: Crafted from high-grade forged brass known for its superior corrosion resistance against water, refrigerants, and mild chemicals—ideal for long service life even in harsh environments.
Precision Engineering: Manufactured with exacting tolerances to guarantee a tight metal-to-metal 45° flare seal, preventing leaks without requiring additional sealants or tapes.
Thread Versatility: Available with SAE UNF flare threads standard, with options for NPT, BSP, and Metric threads to suit various international standards and client requirements.
Robust Construction: Designed to withstand high working pressures (up to 800 PSI) and wide temperature ranges (-65°F to 250°F), making it suitable for refrigeration cycles, gas distribution, and hydraulic fluid lines.
Ease of Installation & Maintenance: Quick and straightforward assembly using standard flare wrenches. The union allows for easy disassembly and reassembly during maintenance without compromising seal integrity.
Surface Finishing Options: Polished natural brass finish for aesthetic and corrosion protection, with nickel and chrome plating options available for enhanced durability and resistance to harsh conditions.
Environmental Compliance: Manufactured under stringent ISO 9001:2015 quality management systems and compliant with RoHS and REACH standards for environmental safety.
Comprehensive Size Chart:
| Tube OD (inch) | Thread Type | Thread Size | Tube OD (mm) |
|---|---|---|---|
| 1/4″ | SAE Flare (UNF) | 7/16-20 | 6.35 |
| 3/8″ | SAE Flare (UNF) | 5/8-18 | 9.52 |
| 1/2″ | SAE Flare (UNF) | 3/4-16 | 12.7 |
| 5/8″ | SAE Flare (UNF) | 7/8-14 | 15.88 |
| 3/4″ | SAE Flare (UNF) | 1-1/16-14 | 19.05 |