

DSP Fire Hose Coupling (Demi-Storz Pompier, for fire fighting vehicle),Countries such as Côte d'Ivoire, Senegal, Mali, Burkina Faso, Cameroon, Gabon, the Republic of the Congo, Madagascar, and Togo almost exclusively require French-style couplings for the fire trucks and sanitation vehicles they procure.
Market Price:
$80Product Origin:
ChinaLead Time:
In stockWeight:
3 KGFire Pump:
CB10/140Pump Flow:
140 L/SWork Pressure:
0.8 MpaFire Trucks French type DSP Fire Hose Coupling is symmetric coupling designed as French standard. The coupling is closed by turning the locking ring beneath the triangular section of the opposed DSP coupling.
Countries such as Côte d'Ivoire, Senegal, Mali, Burkina Faso, Cameroon, Gabon, the Republic of the Congo, Madagascar, and Togo almost exclusively require French-style couplings for the fire trucks and sanitation vehicles they procure.
What is the difference with DSP Guillemin and Storz?
| Type | Locking Method | Gasket | Features |
|---|---|---|---|
| DSP | Two lugs, lock by rotating the outer ring 90° | Lip-type self-sealing | French standard for fire outlet |
| Guillemin | External clamp latch | Flat gasket | General industrial French coupling, not fire-fighting DSP |
| Storz | Two / three lugs rotation | Flat gasket | German standard, different bayonet sizes |

DSP couplings are French-standard fire hose fittings conforming to NF S61-704 (delivery couplings) and NF S61-705 (suction couplings), the French national standards governing fire hose coupling design. DSP stands for Demi-raccord Symétrique à Pression — symmetrical pressure coupling half — reflecting the coupling's key design features: it is symmetrical (hermaphrodite, both halves identical) and incorporates a self-sealing valve that closes automatically when the coupling is disconnected.
» Ⅰ. DSP Fire Hose Coupling Adaptor :



Africa ISUZU GIGA Fire Engine with French type DSP Hose Couplings

Africa ISUZU GIGA Fire Engine with French type DSP Hose Couplings
The most popular DSP Fire Fittings:
» Ⅱ.DSP coupling install ISUZU Fire truck:

Africa ISUZU GIGA Fire Engine with French type DSP Hose Couplings

Africa ISUZU GIGA Fire Engine with French type DSP Hose Couplings

Africa ISUZU GIGA Fire Engine with French type DSP Hose Couplings
» Ⅲ. DSP Featurers:
| Step | Operation | Description |
|---|---|---|
| — | The Self‑Sealing Advantage — No Water Loss on Disconnect | What makes DSP couplings unique among fire hose coupling standards is the built‑in self‑sealing valve. Every DSP coupling half contains an internal valve that opens when two halves are connected and closes automatically when they are separated.
|
| 1 | Connect — valves open automatically | When two DSP halves are pressed together and the locking ring rotated, the internal valves in both halves are pushed open simultaneously, allowing water to flow through the coupled connection. |
| 2 | Flow — pressure maintained through the coupling | With both halves connected and locked, the coupling behaves as a standard sealed hose connection. Water flows freely at up to 16 bar working pressure. NBR face seal provides watertight connection at the coupling interface. |
| 3 | Disconnect — valves close, no water lost | Rotating the locking ring and separating the two halves causes both internal valves to close before the coupling faces separate. Water remains trapped in both hose sections — no spillage, no pressure drop at the pump. |
| 4 | Reconnect — instant re‑pressurisation | Reconnecting two DSP halves immediately re‑opens both valves. The hose line is instantly re‑pressurised without waiting for the pump to fill an empty hose — significantly faster than reconnecting a standard open‑bore coupling. |
» Ⅵ.DSP vs Other Self-sealing and Delivery coupling Standards:

Africa ISUZU GIGA Fire Engine with French type DSP Hose Couplings
