Since the 1940s Whale engineers have refined our manual bilge pump designs and completed extended life testing – the result? Whale’s iconic manual bilge pump range.Manufactured by hand using high grade materials and drawing on more than 60 years experience.FeaturesEase of operation – Smooth easy actionEasy maintenance – Clamp ring easily removed for pump head rotation and quick maintenanceVersatility of design – Dual size nozzles for 25 mm (1″) or 38 mm (1″) hose to suit your plumbingEfficient performance – up to 55 ltrs (14.5 US gals) per minuteSpecificationsWeight: 0.96kg (2 lbs)Hose connections: 25mm (1″) or 38mm (1-1/2″) smooth hose connectionsMaterials:Pump Body: Glass-filled PolypropyleneClamp Ring: AcetalDiaphragm: NeopreneHandle, Spring, Fasteners; Stainless SteelMaterials in contact with fluid: Glass-filled Polypropylene, Neoprene, Stainless SteelPerformance Data25mm (1″) Hose38mm (1-1/2″ HoseSuction Lift1m (3ft)1m (3ft)Discharge Head0.5m (1.5ft)0.5m (1.5ft)45 Strokes per Minute25L (7 US Gals)37.5L (9.9 US Gals)70 Strokes per Minute43L (11.4 US Gals)55L (14.5 US Gals)Dimensions