| Quantity: | |
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DN25-DN150
Product Description
The French Guillemin coupling (also called French coupling, Guillemin coupling, or symmetrical coupling) is a widely used quick-disconnect coupling system originating from France. It connects hoses and pipes without any tools, and is manufactured to NF E 29-572 (the original French standard) and EN 14420-8 (the harmonized European standard).
Its symmetrical design means every half-coupling of the same size is identical and fully interchangeable with any other Guillemin half-coupling — hose tail, threaded version, or blank cap — regardless of manufacturer (within the standard).
This model is the threaded version: one side is the standard Guillemin claw interface, the other side is a BSP threaded connection. It is available in two variants:
Male thread (adapter): external BSP thread, screws into female ports on pumps, tanks, valves, or equipment
Female thread (coupling): internal BSP thread, receives male nipples or threaded pipe ends
Both variants carry the same dimensional and pressure ratings as any other French Guillemin half-coupling of the same size.
Genuine French standard design – Manufactured to NF E 29-572 / EN 14420-8 dimensions, compatible with Guillemin couplings from other reputable manufacturers.
Tool-free quick connection – Press the two claw handles together to lock. One person connects or disconnects in seconds, no spanners or wrenches needed.
Symmetrical & interchangeable – All half-couplings of the same size are identical, reducing spare parts inventory and on-site mistakes.
Male or female thread end – Choose external (male) or internal (female) BSP thread to match your existing pipe, pump, or tank port.
Positive, pressure-assisted locking – The tapered locking ring self-tightens under pressure. Optional latch version adds a mechanical safety lock against accidental disconnection.
Lightweight aluminum body – A356-T6 aluminum alloy, gravity-cast and heat-treated. Roughly one-third the weight of stainless steel, yet rated for 10–16 bar service.
Reliable sealing – Standard NBR (nitrile) seal for water, oil, and general fluids. EPDM, FKM/Viton, and PTFE seals available for chemical, high-temperature, or aggressive media.
Full size range – DN25 (1") through DN100 (4") from stock; larger and non-standard sizes available to order.
Clean, corrosion-resistant finish – Sandblasted or polished aluminum surface, easy to clean and inspect.
Item | Specification |
|---|---|
Standard | French standard NF E 29-572 / European standard EN 14420-8 |
Type | Guillemin half-coupling, threaded end |
Thread Option | Male (BSP external) or Female (BSP internal) |
Thread Standard | BSP parallel (optional NPT, metric, or custom on request) |
Material | Aluminum alloy A356-T6 (heat treated) |
Seal | NBR (standard) / EPDM / FKM (Viton) / PTFE |
Working Pressure | 10 bar (standard) / 16 bar (high-pressure version) |
Temperature Range | -20°C to +120°C (depending on seal material) |
Surface Finish | Sandblast or polished |
Color | Natural aluminum silver (custom colors available) |
表格
Size (DN) | Inch | Male BSP Thread | Female BSP Thread | Working Pressure |
|---|---|---|---|---|
DN25 | 1" | 1" BSP | 1" BSP | 16 bar |
DN40 | 1½" | 1½" BSP | 1½" BSP | 16 bar |
DN50 | 2" | 2" BSP | 2" BSP | 10 / 16 bar |
DN65 | 2½" | 2½" BSP | 2½" BSP | 10 / 16 bar |
DN80 | 3" | 3" BSP | 3" BSP | 10 bar |
DN100 | 4" | 4" BSP | 4" BSP | 10 bar |
Custom dimensions, non-standard threads, and special materials (stainless steel 304/316, brass, PP) are available on request.
Please specify the following when sending an inquiry:
Size (e.g. DN50 / 2")
Thread type – male or female
Thread standard – BSP (default), NPT, or other
Latch – with safety latch or without latch
Seal material – NBR (default), EPDM, FKM, or PTFE
Quantity and destination port
Fire fighting – Fire trucks, fire pumps, hydrants, and French-standard hose line connections
Chemical industry – Transfer of acids, solvents, and other compatible fluids across European-standard plants
Agriculture & irrigation – Farm irrigation, sprinkler systems, and drainage lines widely using French couplings
Tanker trucks – Water trucks, vacuum trucks, and road tanker loading/unloading
Oil & gas – Oilfield fluid transfer, tank farm and road tanker connections
Mining & steel – Cooling water, compressed air, and slurry lines
Construction – Concrete pumping, dewatering, and temporary site water supply
Direct factory pricing with no middleman markup
10+ years specializing in French Guillemin couplings and fire-fighting fittings
Dimensional inspection per NF E 29-572 on every batch
ISO 9001:2015 certified production
OEM & ODM welcome – drawings, samples, or specifications all accepted
Small trial orders accepted to evaluate quality before bulk purchase
Lead time: 7–15 days for stock items, 25–35 days for custom production
