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1. (WO1998050716) BUTTERFLY VALVES
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/050716 International Application No.: PCT/GB1997/001198
Publication Date: 12.11.1998 International Filing Date: 01.05.1997
Chapter 2 Demand Filed: 30.11.1998
IPC:
F16K 1/22 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
K
VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
1
Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
16
with pivoted closure members
18
with pivoted discs or flaps
22
with axis of rotation crossing the valve member, e.g. butterfly valves
Applicants:
SOLENT & PRATT (ENGINEERING) LIMITED [GB/GB]; 202 St. Andrews Road Bridport Dorset DT6 3BS, GB (AllExceptUS)
THURSTON, David, Frederick [GB/GB]; GB (UsOnly)
FURNESS, John [GB/GB]; GB (UsOnly)
Inventors:
THURSTON, David, Frederick; GB
FURNESS, John; GB
Agent:
PHILLIPS & LEIGH; 7 Staple Inn Holborn London WC1V 7QF, GB
Priority Data:
Title (EN) BUTTERFLY VALVES
(FR) SOUPAPE A PAPILLON
Abstract:
(EN) The valve includes a closure disc (34) sealable at its rim to a valve seat (18) so that in this position the seat (18) and rim define between them an annular space (54) which is connected to a port (60) by passages (54, 56, 58) extending through a mating face (e.g. carbon fibre gasket (22)) of the valve seat (18). As shown the space (54) is a recess in the disc rim defined between fibre seal rings (46, 48) but other arrangements are disclosed in which the seal rings and/or recess may be accommodated in the valve seat. The port (60) may be used for leakage detection, pressure monitoring or bleeding, or fluid injection.
(FR) L'invention se rapporte à une soupape qui comporte un obturateur (34) qui peut être scellé, au niveau de sa bordure, à un siège de soupape (18) de manière que, dans cette position, le siège (18) et la bordure délimitent entre eux un espace annulaire (54) qui est connecté à un orifice d'entrée (60) grâce à des canaux (54, 56, 58) traversant une face extérieure de raccordement (par exemple, un joint d'étanchéité en fibres de carbone (22) du siège de soupape (18). Comme illustré, l'espace (54) est un évidement, dans la bordure de l'obturateur, délimité par des bagues d'étanchéité en fibres (46, 48), mais dans d'autres dispositifs selon l'invention, les bagues d'étanchéité (46, 48) et/ou l'évidement peuvent être situés dans le siège de soupape. L'orifice d'entrée (60) peut être utilisé dans le but de détecter une fuite, de contrôler la pression ou de purger par air comprimé, ou de réaliser une injection de fluide.
Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, GH, HU, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU
African Regional Intellectual Property Organization (ARIPO) (GH, KE, LS, MW, SD, SZ, UG)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0979367US6149130AU1997026466