DSP coupling

A DSP coupling is a self-sealing symmetrical coupling which is secured by inter-connecting two couplings together.

It is closed by turning the locking ring on the triangular part of the opposed DSP coupling.

Extra closure can be applied by locking the connection with couplings wrench.

  • DSP coupling
    DSP coupling
  • DSP wrench
    DSP wrench
  • Coupling on a Belgian fire hydrant with a DSP connection to deliver water to an individual.
    Coupling on a Belgian fire hydrant with a DSP connection to deliver water to an individual.

The DSP coupling locking principle is similar to that of the guillemin coupling. However, there are differences to the preformed serration on the locking ring and the design of the lugs.

The locking ring of DSP couplings can be turned up to 45°.

DSP coupling are used as fire-fighting couplings.[1][2] They are typical in for e.g. France[3] and Belgium.

DSP couplings are symmetrical.[4]

DSP comes in different sizes. (e.g. DN40 DN65 DN100).[4]

Typical materials for the coupling are aluminum, brass and bronze.[4][5]

For the Origin or meaning of "DSP" there is only speculation.[6][circular reference]

See also

References

  1. ^ "DSP fire-fighting couplings - Pathel Industrie". www.pathel.com. Archived from the original on 2021-02-25.
  2. ^ "DSP couplings". lmc-couplings.com.
  3. ^ "Coupling to French Standard DSP/AR | Ohrdrufer SchlauchWeberei Eschbach". en.osw-eschbach.de.
  4. ^ a b c "The Difference Between Guillemin couplings and DSP couplings". www.fire-coupling.com.
  5. ^ "Coupling DSP AR | Véhicules de secours et de lutte contre l'incendie - Sides". www.sides.fr. March 14, 2017.
  6. ^ fr:Raccord symétrique Guillemin

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