(19)

(11)

EP 0 375 754 A1

(12)

(43) Date of publication: 04.07.1990 Bulletin 1990/27 (21) Application number: 89905040.0 (22) Date of filing: 21.04.1989

(51) International Patent Classification (IPC):  F16K 24/ 04( . ) F16K 15/ 02( . ) E03C 1/ 10( . ) F16K 24/ 02( . ) (86) International application number: PCT/AU1989/000174 (87) International publication number: WO 1989/010509 (02.11.1989 Gazette 1989/26)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI SE (30) Priority: 22.04.1988 AU 19880007865 (71) Applicant: BURNETTA PTY. LTD. Mt. Peasant, W.A. 6153 (AU)	(72) Inventor: BEATTIE, David, Dowley Nollamara, W.A. 6061 (AU) (74) Representative: Robinson, Anthony John Metcalf, et al  Kilburn & Strode 30 John Street London, WC1N 2DD London, WC1N 2DD (GB)