Honeywell/Honeywell North® (~M26x1.55) Coupler Set

This prototype design for a Honeywell/Honeywell North® (~M26x1.55) threaded coupler set, for male to female or female to male; male to male; and female to female couplings. Also a place holder for other straight walled or barbed adapters to or from the Honeywell threaded line of filter cartridges. Designed to help cross compatibility of commercial off the shelf (COTS) filters with other manufacturer’s respirators, during this PPE shortage, in this particular instance for PAPR (Powered-Air Purifying Respirator) hose compatibility or ventilator system expansion.

Part Description:

FEMALE_TO_FEMALE_HONEYWELL_M25.889X1.554_COUPLER_GEN1.stl

MALE_TO_FEMALE_HONEYWELL_M25.889X1.554_COUPLER_GEN1.stl

MALE_TO_MALE_HONEYWELL_M25.889X1.554_COUPLER_GEN1.stl

Initial model release of three-part Honeywell/North® coupling set.

MALE_HONEYWELL_M25.889X1.554_TO_19MM_OD_STRAIGHT_WALLED_ADAPTER_GEN1.stl

MALE_HONEYWELL_M25.889X1.554_TO_19MM_OD_BARBED_ADAPTER_GEN1.stl

Released Honeywell ~M26x1.55 male thread to 19mm OD straight walled and barbed couplers as requested by derekrwhite for his low cost ventilator design.
https://cheapventilator.org

Disclaimers/Risks:

1.) Ensure proper seal maintained between adapters via use of Teflon tape, and negative pressure testing.

2.) 3D printing materials are not resistant to many solvents, are water soluble, and degrade when exposed to chemicals. 3D printing this adapter is only a temporarily ad-hoc solution against biological threats. Once supply chain return to normal users should purchase OEM OSHA/NIOSH/EN standard approved adapters and respirator accessories.

Dev. Notes:

05/06/2020 – Initial model release. In work, pending support 3D printing community for any fitment and model revisions.