prov:value
| - Although the body of pump means 64, in which bore 70 and dosage chamber 68 are formed, and plunger 72, including flange 78, piston head 79 and rod extension 80, and actuator means parts 124, 126, 134 and 138 may be formed of metal, it is more economical, and therefore preferable, to form these parts of a plastic material, such as ABS or polypropelene.
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