Ir - V Series: Italy Standard Available On Request: Iso Ae Iso B - Note: Interchangeable Faster Nv Series With Iso 7241 - 1 Series "iso A" Only Size 1/2 "- Features - Interchangeability: Iso7241 Standard - 1 Part A (only Size 1/2 ") - Occlusion: Protruding Mushroom Valve - Connection: Moving The Ring Nut Backwards. - Disconnection: Withdrawing The Ring Nut. - Pluggable: In The Absence Of Pressure. - Disengaged Pressure: Not Allowed - Threads Available: Bsp, Npt - Construction Material: Carbon Steel - Surface Treatment: Zinc Plating - Springs: C72 Steel - Balls: Hard Steel 100 C6 - Internal Brass Valve Guide With Mechanical Stop - Gaskets: Standard In Nbr (nitrile)