We are the french type DSP fire hose coupling factory in china , the material can be aluminum ,brass .
the IMPA CODE is 330873 330874 . The DSP hose coupling is widely used in the frence .
The female and male parts are the same ,there are no difference . when you want to use ,you just connect and turn .
The DSP couping looks same with Guillemin Hose Coupling ,but there are have the small differences . the locker is differnet .
Size :1.5'' 2.5'' 4.0''
Material :ALU by gravity casting , Brass by forging ,
Seal: NBR, EPDM, FPM, PTFE
Thread: BSP NPT
Surface Treatment: Polishing or Sand-Blast