Swivelling double nippel with nominal diameter 5/12/16 for railway applications up to 12 bar. Available made of steel. Parker's sériés DN is a swivelling double nipple with a very robust low temperature polyurethane seal to guarantee a long service life. By this swivelling double nipple, the hoses are not contorted or twisted - this means that the hoses have a longer service life. Markets: - - Railway Features/Benefits: - - Spécial NBR seal for low temperature applications up to -50°C - - Minimal pressure drop - equal to a Steel tube - - Much longer life time of the hose Applications: - - Pneumatic Braking Systems - - Pneumatic Applications