Title:
A VALVE SEAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/236223
Kind Code:
A3
Abstract:
A valve seal device (1) for a valve in a pipeline, comprising four moveable seats (2, 5) configured for sealingly contacting a valve member (4), two seats are positioned on each side of the valve member, at least one of the moveable seats on each side of the valve member is an actuation seat being controllable from a non- contact position to a contact position where it seals against the valve member.
Inventors:
KARLSEN FRODE IVAR (NO)
Application Number:
PCT/NO2018/050166
Publication Date:
February 21, 2019
Filing Date:
June 19, 2018
Export Citation:
Assignee:
SIL VALVES AS (NO)
International Classes:
F16K3/20; F16K3/02; F16K5/06; F16K5/20; F16K41/02
Domestic Patent References:
| WO1991019921A1 | 1991-12-26 |
Foreign References:
| DE2131643A1 | 1973-01-18 | |||
| US5322261A | 1994-06-21 | |||
| DE102015110113A1 | 2016-12-29 | |||
| JPS52136425A | 1977-11-15 | |||
| JPH08303616A | 1996-11-22 | |||
| JPS55149462A | 1980-11-20 |
Attorney, Agent or Firm:
HAMSO PATENTBYRA AS (NO)
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