Explanatory notes
… or by an automatic device such as a spring, counterweight, float lever, thermostatic element or pressure capsule. Taps, … Radiator drainage taps. (8) Inner‑tube valves. (9) Float controlled valves. (10) Steam traps in which the water … are automatically emptied (e.g., by the operation of a float). The heading also covers steam traps in which the …
