Thermodynamic steam trap valve discs
US4660760A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 1985 |
| Grant date | Apr 28, 1987 |
| Priority date | — |
| Expiry date | Aug 21, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/304
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A disc valve member (5) is disclosed that can be fitted to a thermodynamic steam trap (1) without modification of the trap. The disc valve member has an internal chamber (7) and perforated portions (8,9) through which air can escape from a chamber (6) in which the disc valve member floats when fitted in a trap, it being desirable that such air escape should be possible during start-up conditions in a steam line. At normal operating temperature, a bi-metal disc (10) within the internal chamber (7) of the disc valve member is snapped-over to a position in which the path for air escape from the trap chamber (6) is closed, and the disc valve member operates as an imperforate member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.