Is the circled part my bleed valve? No other thinks on my radiator other than to increase(02)

Is the circled part my bleed valve? No other thinks on my radiator other than to increase(02)

Video Screenshot Gallery: Leaking Radiator Bleed Valve

How To Replace A Radiator Bleeder Valve at Ricardo Watkins blog
Radiator Leaking Water From Air Valve at John Halliburton blog
Is the circled part my bleed valve? No other thinks on my radiator other than to increase