Model Of An Upper Pump Box. Model of a pump piston for a square pump tube. It consists of two layers of leather slipped between wooden boards. The lower half is square; The upper half consists of two triangular valves, on the inside with copper coated. Between the valves an iron bracket is for mounting the pump rod or chain.

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Size: 2102px × 2500px
Photo credit: © BTEU/RKMLGE / Alamy / Afripics
License: Licensed
Model Released: No

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