Guillemin couplings are symmetrical quick-connect fittings designed for efficient transfer of liquids, dry bulk materials, and chemicals in industrial hose and piping systems.
Product Specifications
|
Product Parameter |
Specification |
|
Size Range |
DN 40–DN 100 (1-1/2"–4") |
|
Connection Types |
Hose shank, BSP/NPT threads, butt-weld |
|
Gasket Options |
NBR, FKM, EPDM, PTFE |
|
Temperature Range |
-20°C to +65°C (up to +180°C with special seals) |
|
Main Material |
AISI 316 / 1.4408 Stainless Steel |
|
Casting Process |
Silica-sol investment casting |
|
Surface Treatment |
Pickling & passivation |
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Chemical Compatibility |
Acids, alkalis, hydrocarbons, wastewater |
Connection & Compatibility
Symmetrical Quick-Connect: Identical dual-lug halves join seamlessly without male/female distinctions.
Versatile End Options: Available in BSP, NPT (ASME B1.20.1), hose shank, or butt-weld ends to fit standard industrial piping.
Precision Machined Threads: Precision NPT and BSP threads prevent thread galling and ensure leak-tight integration with manifolds and valves.
Sealing Compatibility: Interchangeable NBR, FKM, EPDM, or PTFE gaskets prevent leakage across a wide range of chemical media and working temperatures.
Pressure & Temperature Ratings
Working Pressure
Operates continuously at 16 bar across all DN sizes, fully compliant with the EN 14420-8 standard.
Standard Seals
NBR gaskets come standard for water, oil, and general fluid handling from -20°C to +65°C.
High-Temperature Options
Optional EPDM and FKM gaskets extend working temperatures up to +180°C for harsh chemicals and hot media.
Industrial Applications
Petrochemical Tank Unloading
Fuel transfer lines for diesel, gasoline, and aromatics using EN 13612 locking geometry.
Chemical Process Pipelines
Aggressive acid and alkali delivery systems requiring zero-leakage containment interfaces.
Dry Bulk Pneumatic Conveying
Powder and plastic pellet conveying lines where Ra ≤ 3.2 µm finishes prevent batch contamination.
Mining Dewatering Systems
Slurry lines and high-pressure drainage networks operating up to 16 bar working pressure.
Customization & OEM Capabilities
Custom melts available in Stainless Steel 316L, Duplex 2205, and Hastelloy C276.
Custom hose stem serrations, safety collar profiles, and hybrid NPT, BSP, or DIN threads.
Fully machined or investment-cast functional samples delivered within 20 business days.
Direct laser etching of custom OEM logos, part numbers, and tracking barcodes on body housings.
Quality Control
Latch ring tolerances held to ±0.02 mm to guarantee instant field coupling without binding.
Internal waterways passivated to Ra ≤ 3.2 µm to enhance fluid flow and simplify line flushing.
Every unit undergoes 6 bar underwater air testing and 24 bar hydrostatic proof testing.
Certifications & Traceability
Certified quality workflows across casting, machining, assembly, and testing operations under ISO 9001:2015.
Chemical and mechanical inspection certificates supplied with every shipped lot per EN 10204 3.1.
Material test reports, CMM logs, and pressure test records archived digitally for 7 years.
FAQ
Q: Do you provide third-party inspection reports from SGS, TÜV, or Bureau Veritas for material and pressure test verification?
A: Yes, SGS or TÜV Rheinland inspection reports can be arranged for an additional fee per shipment, with reports referencing the specific melt batch and pressure test log numbers for buyer verification.
Q: What happens if a shipment's material certificate doesn't match the actual chemical composition upon independent buyer testing?
A: Buyers must submit an independent lab report within 30 days of receipt, after which a full material re-verification and replacement or credit note is issued upon confirmed discrepancy.
Q: What material is used for the special seals rated up to 180°C?
A: The high-temperature option uses PTFE-encapsulated FKM seals, which extend the temperature range to 180°C but have reduced flexibility at sub-zero temperatures compared to standard FKM.
Q: Is there a different MOQ for custom melts in Duplex 2205 or Hastelloy C276 compared to standard 316L?
A: Yes, Duplex 2205 and Hastelloy C276 custom melts require a 200-piece MOQ due to minimum furnace charge requirements, compared to 50 pieces for standard 316L stock alloys.
Q: Does the 7-year digital archiving of test records include the ability to retrieve reports by specific melt/heat number after purchase?
A: Yes, buyers can request archived CMM logs and pressure test records at any time within the 7-year window by referencing the permanent heat number cast onto the coupling body.
