This is a DN 65 Guillemin coupling with a 65 mm hose pillar. It is made of stainless steel with an NBR seal. The maximum pressure is 16 bar (232 psi). The coupling is suitable for temperatures between -10 to 80 °C (14 to 176 °F). Not equipped with a lock ring. A coupling without a lock ring is often chosen on fixed installations.
The couplings adhere to NFE 29572 and EN 14420-8. Two identical couplings are joined by interlocking the jaws and turning the lock rings. Use a Guillemin wrench for sufficient closure.
Note: At least one of the two couplings needs to have a locking ring and only versions with locking rings have a soft seal. Typically, the fixed coupling (i.e. on a tank) won’t have a locking ring and the other coupling (i.e. on a hose) will have a locking ring and soft seal.
Pros:
- Simple and easy connection
- Large free flow area
- Stainless steel couplings have excellent corrosion resistance
- Suitable for water, fluids, hydrocarbons, chemicals, and dry loose materials
Cons:
- Not suitable for steam and other gases
- It does not have a locking ring and soft seal, so it needs to be coupled to one with that feature
Specifications
Material : Stainless steel
Seal material : NBR (nitrile rubber)
Nominal bore of coupling : DN 65
Coupling features : With lock
Sealing surface diameter (mm) : 83
Max temperature (°C) : 80
Min temperature (°C) : -10
Max pressure at 20 °C (bar) : 16

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