| 摘要 |
927,360. Valves. H. VAILLANT, [trading as JOH VAILLANT KOMM.-GES.]. Sept. 29, 1959 [Oct. 20, 1958], No. 32986/59. Addition to 872,650. Class 135. In a flow regulator for a gas-fired waterheater of the kind described in the parent Specification, the pivoted flap throttling member is replaced by a cap-like valve member 27. The inlet 28 to the secondary water duct 24 is controlled by a second cap-like valve member 27<SP>1</SP>. |
