Russian (COSL)Type Hose Couplings China Deyuan Marine Fitting Co.,ltd are leading supplier of fire hose,hose coupling,we can offer John Morris type hose couplings,Chinese type hose coupling,Storz type hose coupling,Machino type hose coupling,Nakajima hose coupling,USA Pin hose coupling,ANSI hose couplingFrech type hose couplings,Norwegian type hose coupling etc.Pls contact us for more details.SIZE50MM 2"65mm 2-1/2"&&&&:15PPM oily water separator 15ppm bilge alarm/bilge separatorODM systemfresh water generatorUV-SterilizerRe-hardening water filtermarine incineratormarine sewage treatment plant