STEAM TRAP Russian patent published in 2002 - IPC

FIELD: heat-power engineering; removal of condensate from heat-consumption equipment. SUBSTANCE: steam trap has housing with fastening at the ends which are fitted in way of flow of condensate and are secured by means of sealing ring (rings) through spacer rings, washers with throttling orifices over periphery; washers are so mounted that orifices of adjacent washers are diametrically opposite forming labyrinth system of hydraulic seal type, filter-separator mounted in housing at inlet or at inlet and outlet of steam trap; at least one of washers is provided with check valve. Washer provided with check valve is made in form of disk with cavity in its body; this cavity is connected with inlet hole (holes) and outlet hole (holes) by means of passages; holes are made in opposite butts of disk; working surface of disk is engageable with surface of shut-off member of check valve. EFFECT: enhanced reliability, efficiency and safety. 2 cl, 3 dwg