(19)

(11)

EP 0 032 906 A1

(12)

(43) Date of publication: 05.08.1981 Bulletin 1981/31 (21) Application number: 80901322.0 (22) Date of filing: 17.07.1980

(51) International Patent Classification (IPC):  F16L 37/ 32( . ) F16L 37/ 62( . ) (86) International application number: PCT/AU1980/000034 (87) International publication number: WO 1981/000295 (05.02.1981 Gazette 1981/04)

(84) Designated Contracting States: AT DE FR GB NL SE (30) Priority: 25.07.1979 AU 19790009716 (71) Applicant: SABCO LIMITED Albert Park, S.A. 5000 (AU)	(72) Inventor: ROBINSON, Paul Eastcott Largs Bay, S.A. 5016 (AU)