US military Water Purification Unit 1950's era

Description

Sold as collector's item only.
Not guaranteed to function as intended.
New old stock- Hand operated, self-priming, positive displacement pump equipped with a diaphragm and spring loaded suction and discharge poppet valves. Operates with two filter pads. This comes new in box with 8 extra filters, knapsack pack, and instruction manual. It pumps 1/4 gallon per minute. Used in conjunction with water purification tablets.
Manufactured in the 1950's. These are genuine military issue.