Manufactured in three pieces to facilitate replacement on plants which requires frequent maintenance. Ends: female threads as per uni/iso 7/1 rp; pocket welding; butt welding. Standard seals: ptfe. Working temperature: from -20°c to +180°c Working pressure: see diagram. Fluid range: air, water, gas, petroleum and petrochemical products, aggressive media. Head of the valve as per iso 5211 specifications.