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tetrabiodistributed / project-tetra

A ventilator splitter with flow control and monitoring for use as a last resort solution in emergencies.
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Off the shelf parts documentation #29

Open Burhan-Q opened 4 years ago

Burhan-Q commented 4 years ago

Collect list of part numbers, specs, links, and documents for any/all off the shelf parts used. These will be listed in the final BOM and assembly documentation, for others to reference if looking to recreate the splitter system.

Burhan-Q commented 4 years ago

Tetra valve

v4-1

1x G-74 - Compression Spring ---Spring critical specifications--- spring rate = 0.385 N/mm (2.2 lbs/inch ) minimum inner diameter = 4.44 mm (0.175") max solid length = 2.3 mm (0.09")

1x O-Ring: -018 N70 NITRILE (NBR, BUNA) 70 DUROMETER BLACK 1x O-Ring: -020 N70 NITRILE (NBR, BUNA) 70 DUROMETER BLACK 1x O-Ring: -128 N70 NITRILE (NBR, BUNA) 70 DUROMETER BLACK

v5 1x G-74 - Compression Spring Spring critical specifications: spring rate = 0.385 N/mm (2.2 lbs/inch ) minimum inner diameter = 4.44 mm (0.175") max solid length = 2.3 mm (0.09")

2x O-Ring: -018 N70 NITRILE (NBR, BUNA) 70 DUROMETER BLACK 1x O-Ring: -020 N70 NITRILE (NBR, BUNA) 70 DUROMETER BLACK

Burhan-Q commented 4 years ago

Shutoff valve

4x O-Ring: -361 N75A Viton Fluoroelastomer 2x Zinc-plated steel M4 x0.7 hex nut 2x 18-8 stainless steel M4 x 0.7 screw 15 mm

Burhan-Q commented 4 years ago

Computer and Display

7" Touch display Raspberry Pi (additionally appropriate power supply, cables, storage, and other basic accessories Notice: RPi4 in use for prototype, but at the moment no known limit for selecting a model; recommend RPi3 or newer

capsulecorplab commented 4 years ago

Linking Hannah's Hardware parts list for cross-reference.