Bill of Materials

MakerVent Model T Bill of Materials

This BOM is now finalized, it represents the machine that we will describe in our request for FDA authorization. I'm listing the distributors or online suppliers that I bought from, you may need to choose another supplier in your locality. In the case of some parts, the manufacturer/MPN information is incomplete, but the supplier part number ordering info is accurate. I will update this BOM with the missing information soon.

All parts have been reviewed for bio-compatibility, and an oxygen cleaning protocol was developed. The first machine was built, cleaned, and tested for compliance with the ISO 18562 standard for bio-compatibility and safety of breathable gas, at a well-established national testing lab, and it passed. I will be posting the test results, risk analysis, and details of the required cleaning procedure soon.

If you build a ventilator as described in these pages,

UNLESS IT IS ASSEMBLED AND CLEANED IN THE SAME WAY AS THE MACHINE THAT PASSED ISO 18562 TESTS, I DO NOT RECOMMEND BREATHING GAS THAT PASSES THROUGH THAT MACHINE.

I'll be providing more information on this site soon. The procedures are developed, but we are still formally documenting some loose ends, and if you want to build a safe machine from these parts you should get in touch with us first.

Item Description Manufacturer MPN Supplier SPN Qty Comment
1 Enclosure Local craftsman


1 Will post CAD data soon
2 Fixed pressure regulator 30 PSI 1/4" NPT Marsh Bellofram 960-109-000 30 PSI Industrial Process Measurement 960-109-000 30 PSI 1
3 Lever-actuated 5/2 spool valve 3/8" NPT Numatics L23LD452O000000 Grainger 3JCU1 1
4 Time delay valve SMC VR2110-N01 Automation Distribution VR2110-N01 2
5 Double pilot-actuated 5/2 spool valve 3/8" NPT Numatics L23PP452O000000 Grainger 3JCU7 1
6 Pilot actuated spring return 5/2 spool valve 3/8" NPT Numatics L23PA452O000000 Grainger 3JCU6 1
7 Flow control valve 1/8" NPT ARO 104104-F01 Grainger 6ZC07 1
8 On/off valve 3/8" push to connect

McMaster-Carr 4379K67 1
9 Shuttle valve SMC VR1220F-11 Automation Distribution VR1220F-11 2 For continuous mode
10 High flow low pressure regulator 0-2 PSI 1/4" NPT Marsh Bellofram 960-129-000 Industrial Process Measurement 960-129-000 1
11 Flow meter 14-140 LPM air Brooks Instrument 2530A4A72SNVT Brooks Instrument 2530A4A72SNVT 1
12 Pressure Gauge -10 to 80 cmH2O Dispomed
Avante Health Solutions 15006 1
13 Bushing adapter, 1/4" NPT Male to 1/8" NPT Female

McMaster-Carr 48335K201 1
14 Adapter, elbow, swivel 3/8" push to connect to 1/8" NPTF male

McMaster-Carr 51055K163 2
15 Adapter 3/8" push to connect to 1/8" NPTF male

McMaster-Carr 51055K16 9
16 Adapter 3/8" push to connect to 1/4" NPTF male

McMaster-Carr 51055K17 6
17 Adapter 3/8" push to connect to 1/4" NPTF female

McMaster-Carr 51055K678 1
18 Adapter 3/8" push to connect to 3/8" NPTF male

McMaster-Carr 51055K18 11
19 Adapter 1/2" push to connect to 3/8" push to connect

McMaster-Carr 51055K99 2
20 Pipe plug 1/4" NPT

McMaster-Carr 3495N12 3
21 Pipe plug 3/8" NPT

McMaster-Carr 3495N13 7 5 are dust covers, remove for operation
22 Tee connector 3/8" push to connect

McMaster-Carr 51055K145 6
23 Tubing 3/8" OD 1/4" ID, natural Freelin-Wade 1J-152-10 Freelin-Wade 1J-152-10 1 Need about 25 feet
24 Tubing 1/2" OD 3/8" ID, natural Freelin-Wade 1J-111-10 Freelin-Wade 1J-111-10 1 Need about 6 inches
25 Adapter 22mm OD to 10mm OD

Quosina 52210 2
26 DISS O2 fitting 1/4" hose

Avante Health Solutions P00439 1
27 Locking clips for 3/8" push to connect

McMaster-Carr 51055K414 53
28 Locking clips for 1/2" push to connect

McMaster-Carr 51055K419 2
29 Cap for 3/8" push to connect

McMaster-Carr 51055K431 1 Dust cover, remove for operaton
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