½ plug is using for panel radiators to use directly on painting line, special O-ring can hold up to 200 degrees, to receive quite esthetic look of radiator after painting.

 We are able to produce special types of plugs according to customer`s demans. Air vents are procuced of calibrated brass and has the high resistance ability 
Key Mouth Spin Test : Maksimum 40Nm. 
O-Ring Test : Minimum 30I/h 
Air Press Test : 13 Bar
Nickel coating : 3-6 Micro