The Difference Between Guillemin couplings and DSP couplings

The Difference Between  guillemin couplings and DSP couplings

The DSP coupling is symmetrical coupling ,which connect with the two same coupling ,it is widely used in the fire fighting ,

the size are DN40 DN65 DN100 according to NF S61-704 and NF S61-705.the material are normaly aluminum brass bronze .

The DSP coupling locking system is similar to that of the Guillemin coupling. but there are small difference , the locker ring

can be turned only 45 degree and the lug is triangular (see the picture ).

The Guillemin coupling is symmetrical coupling ,which connect with the two same coupling ,it is widely used in the industrial ,

the coupling meet the standards EN 14420-8 / NF E 29-572 .

the locker ring can be turned fully 100 degree and the lug is smooth .

Note :DSP couplings are not interchangeable with guillemin couplings.