Body in nickel-plated brass. 
Handle in nylon. 
Maximum working temperature: 110°C. 
Threads: ISO228 (equivalent to DIN EN ISO 228 and BS EN ISO 228).
Manufacturer: ITAP S.p.A.
Adjustable nickel-plated air vent valve 1/2" Itap
Adjustable nickel-plated air vent valve 1/2" Itap