(19)

(11)

EP 0 069 128 A1

(12)

(43) Date of publication: 12.01.1983 Bulletin 1983/02 (21) Application number: 82900213.0 (22) Date of filing: 11.01.1982

(51) International Patent Classification (IPC):  F15B 11/ 032( . ) F15B 11/ 072( . ) (86) International application number: PCT/GB1982/000004 (87) International publication number: WO 1982/002423 (22.07.1982 Gazette 1982/18)

(84) Designated Contracting States: CH DE GB LI NL SE (30) Priority: 12.01.1981 GB 19810000799 (71) Applicant: CAMTORC LIMITED Gosport Hampshire PO12 4LJ (GB)	(72) Inventors: McCORMACK, Wallace Bursledon Hampshire (GB) BOWDITCH, David Midhurst Sussex (GB)