Miller Bauer Couplings are quick-connect ball-and-socket fittings for fast, tool-free hose connection. Made from galvanized carbon steel, they use a lever-locking mechanism for secure fluid transfer.
Technical Parameters
|
Parameter |
Specification |
|
Size Range |
DN75–DN300 (3"–12") |
|
Pressure Rating |
10–20 Bar (145–290 PSI) |
|
Material |
Galvanized carbon steel, zinc coating ≥85 µm |
|
Connection |
Hose shank, NPT/BSPT threads, ANSI/DIN flanges |
|
Locking System |
Tool-free lever ring connection |
|
Seal Type |
EPDM / NBR self-sealing gasket |
|
Temperature Range |
-20°C to +120°C |
|
Manufacturing |
Investment casting + CNC machining |
|
Corrosion Resistance |
Salt spray resistance >480 hours |
Working Conditions
Operating Pressure: Rated for 10 to 20 bar working pressure, tailored to coupling size with a 3:1 safety factor.
Thermal Limits: Standard EPDM gaskets cover -20°C to +120°C for water; heavy-duty NBR covers -15°C to +80°C for hydrocarbon fluids.
Angular Misalignment: Spherical ball-and-socket geometry allows up to 15° articulation, accommodating uneven terrain and thermal pipeline expansion.
Galvanized Protection: Hot-dip galvanized carbon steel surfaces resist rust in harsh mining, dewatering, and outdoor temporary line deployments.
Lever Connection: Tool-free quick-locking latch allows fast daily assembly, tear-down, and line relocation on active job sites.
Key Benefits
Angular Deflection: Spherical ball-and-socket geometry accommodates up to 15° misalignment, eliminating precision trenching.
Dual Pressure Rating: Sustains continuous working pressure up to 20 Bar and vacuum down to -0.8 Bar without seal displacement.
System Interchangeability: Fully mates with European-standard quick-coupling systems used in mine dewatering and temporary bypass networks.
Customization & OEM Options
Factory-welded elbows supplied at 15°, 30°, 45°, and 90° angles matching site piping layout drawings.
Custom fabrications combining Bauer ball/socket ends with ANSI/DIN flanges or threaded hose tails.
Fiber laser engraving of custom part numbers, company logos, and heat codes directly onto coupling levers.
Quality Testing
100% Hydrostatic Audits: Every coupling undergoes 30 Bar hydrostatic testing (1.5x working pressure) for 3 minutes, followed by a 2 Bar submerged air-leak test.
Galvanizing Thickness Inspection: Digital magnetic testing verifies a minimum 85 µm hot-dip zinc coating across 5 designated inspection points per part.
Raw Material Verification: Spectrometric heat analysis and tensile strength testing conducted for every raw casting batch.
EN 10204 3.1 Certification: Traceable Material Test Certificates (MTC) and factory inspection logs attached to all export shipping documents.
Packaging & Lead Time
Sea-Worthy Packaging
Couplings sealed in VCI anti-rust film inside heat-treated ISPM-15 wooden crates with external steel strapping.
Container Freight Optimization
Packing geometry engineered to load up to 22 metric tons per 20ft FCL, minimizing ocean freight cost per set.
Lead Time
Guarantee dispatch of standard 20ft FCL orders within 25 calendar days.
Standard Stock MOQ
Baseline Minimum Order Quantity starts at 100 units for standard hot-dip galvanized inventory.
FAQ
Q: Does the manufacturing facility hold any industry-specific certifications relevant to mining or oil field applications?
A: The facility operates under ISO 9001:2015 quality management, and API 6A certification is available for oil-field-specific orders upon request with an additional 15- 20-day certification lead time.
Q: Do larger sizes like DN250-DN300 require a longer lead time than the standard 25-day guarantee?
A: Yes, sizes above DN200 require 32-35 days due to larger casting mold changeover and extended hydrostatic test cycles per unit.
Q: How many lock-and-release cycles can the lever-locking mechanism withstand before requiring part replacement?
A: The lever mechanism is rated for 10,000+ engagement cycles under standard field conditions before the locking pin shows measurable wear requiring replacement.
Q: How long does the zinc coating typically last before recoating or replacement is needed in continuous outdoor use?
A: Under continuous outdoor exposure, the ≥85 µm zinc coating typically provides 15-20 years of corrosion protection.
Q: What's the difference between EPDM and NBR gasket options in terms of fluid compatibility?
A: EPDM is recommended for water, mild chemicals, and outdoor UV exposure, while NBR offers better resistance to oils, fuels, and hydrocarbon-based fluids.
