Solenoid operated discharging orifice shutoff valve
US5529387A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 6, 1994 |
| Grant date | Jun 25, 1996 |
| Priority date | — |
| Expiry date | Sep 6, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/408
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A solenoid actuated valve of an in-line construction having an inlet and outlet between which are located the valve's operating components including a piston with a hollow head which engages a seat for sealing the valve's main flow path. The piston head has a discharging orifice which is sealed by the pilot pin of a solenoid operated popper and a charging orifice through which high pressure fluid from the valve inlet is supplied. The poppet has flow passages downstream of the piston seat which communicate with the valve outlet. In a normally closed type valve, the solenoid is energized to move the poppet and withdraw its pilot pin from the piston head's discharging orifice and the high pressure inlet fluid admitted to the piston head interior through its charging orifice discharges through its now open discharge orifice at a faster rate than the fluid entering through the charging orifice to create a low pressure condition on the seating area of the piston and permit it to travel away from the seat and open the valve's flow path. In a normally open valve configuration, both the piston and poppet are biased away from seating and flow path sealing portions so that when the solenoid i…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.