Radiator H valve, radiator valve manufacturer, supplier 1. ) Straight radiator H valve, size: 1/2"x3/4", model: V21-010. 2. ) Angle radiator H valve, size: 1/2"x3/4", model: V21-012 We can supply brass valves, H Valves or Radiator valves, ball valve, angle valve heating system products, brass fitting etc. For more details, please feel free to contact us.