An Improved Water Trap for Gas Mains.

摘要

20,487. Billand, C. Sept. 10, Mains.-A catch box for gas-mains, of the type in which the watertrap constitutes an independent casting, is attached to the main by an ordinary three-armed junction-piece a having a flanged branch d to which the trap is directly attached by bolts. The suction pipe g is external of the main. The water-trap f may be spherical or spheroidal, or may have hemispherical ends and any suitably - shaped intermediate piece.