Steam train engine, with horn and bell
Hissing of steam popping out of the pressure cooker
Milk poured into metal jug, steam wand frothes milk in jug, continuous steam hiss
Restaurant ambient with an espresso machine steam on.
Steam under pressure as with steam iron, sharp hissing of release
Ambient interior of public bathhouse or pool with heavy reverb and water sounds.
Factory steamwhistle blowing.
Funny deep factory whistle.
Riverboat horn, three blasts.