Valve assembly for purging particulates from a steam piping system
US4541456A · kind A · utility
13Cited by
6References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 7, 1984 |
| Grant date | Sep 17, 1985 |
| Priority date | — |
| Expiry date | Feb 7, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87901
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A valve assembly mountable in a debris strainer device installed in a steam piping system. The valve assembly includes a retractile valve stem cooperating with a conduit branch of the strainer device to form a short clearance chamber which restricts the amount of fluid which can collect in the chamber when the valve is closed. The valve stem is retractable initially to allow for substantially constant bleeding of discharge effluent prior to full retraction of the valve stem to fully open the valve for achieving "blow-off" or the blast of particulate discharge through the valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.