My cockpit bilge pump which opens out to provide a lever arm as shown, and the in line one way valve which now has a defective joker valve. There are aspects of design that make me think that they are both the same manufacturer / brand. Fitted as original to my 2005 boat
Worth changing. I have one & following a gas leak I tried pumping air from the bilge. 4-5 minutes & my hands were badly cut from the stupid handle design.