Complex Pump Latch
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Made from 316 stainles steel, the latch is used at the end of a door handle for a medical infusion pump that dispenses intravenous solutions. That part is produced to a density of 6.7 g/cm3 has an ultimate tensile strength of 65,000 psi, a yield strength of 42,000 psi and 11,5% elongation. It must withstand high loads and repeated operation without wear or breaking. Secondary operations are limited to deburing, tempering, glass bead finishing and tapping one hole. The P/M latch replaces a die cast handle that was machined and fitted to a machined stainless steel latch with dowel pins and screws.