(19)

(11)

EP 3 368 769 A1

(12)

(43) Date of publication: 05.09.2018 Bulletin 2018/36 (21) Application number: 16791063.7 (22) Date of filing: 31.10.2016

(51) International Patent Classification (IPC):  F04B 17/04(2006.01) F04B 49/06(2006.01) F04B 35/04(2006.01) (86) International application number: PCT/GB2016/053371 (87) International publication number: WO 2017/072532 (04.05.2017 Gazette 2017/18)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: MA MD (30) Priority: 30.10.2015 GB 201519246 (71) Applicant: Aspen Pumps Limited Hailsham, East Sussex BN27 3WA (GB)	(72) Inventor: HAFFENDEN, Gary Bexhill on Sea East Sussex TN39 3PX (GB) (74) Representative: HGF Limited  8th Floor 140 London Wall London EC2Y 5DN London EC2Y 5DN (GB)