Hose size
1-7/8 in vacuum hose: Shop-Vac parts and step adapters
Shop-Vac's 1-7/8 in hoses and the adapter that steps to 2-1/2 in, plus why the original Dust Deputy port reads as both 2 in and 1-7/8 in.
Also listed as 1.875 in hose, 1-7/8 inch hose
Short answer
1-7/8 in is a shop-vac hose and inlet size. Shop-Vac's 5430133 is an 8 ft, 1-7/8 in hose for vacuums with a 1-7/8 in inlet, and its supplied adapter can join two hoses or convert the end to 2-1/2 in. The catch: Shop-Vac never says whether 1-7/8 in is inside or outside, and Oneida's original Dust Deputy port is 2 in OD and 1-7/8 in ID, so one port carries both numbers. See shop-vac hose sizes.
Key facts
- Nominal label
- 1-7/8 in (Shop-Vac hose and inlet label)[1]
- What the label measures
- Not confirmed
- Maker-dimensioned examples
- Shop-Vac 5430133: 8 ft, 1-7/8 in EVA hose for wet/dry vacs with a 1-7/8 in inlet. Shop-Vac 5430138: 12 ft x 1-7/8 in hose that Shop-Vac says changes to 2-1/2, 1-1/2 and 1-1/4 in and fits standard and LockOn inlets[1][2]Shop-Vac says the 5430138 hose itself changes size; it lists no separate conversion parts.
- Tank and cuff ends
- Shop-Vac 5430133 comes with hose ends to retrofit Shop-Vac inlets[1]Cuff dimensions are not given.
- Metric arithmetic
- 1.875 in x 25.4 = 47.625 mm[3]Arithmetic, not a fit allowance.
- Step adapters to other sizes
- Shop-Vac: the adapter supplied with hose 5430133 joins two hoses or converts the 1-7/8 in end to 2-1/2 in[1]No separate part number or dimensions are given.
- Couplers and clamps
- The same 5430133 adapter can join two hoses (Shop-Vac)[1]
- Separators made for this size
- Original Dust Deputy: tapered inlet and outlet ports of 2 in OD and 1-7/8 in ID (Oneida manual)[4]Oneida marks these as nominal dimensions subject to slight manufacturing variation. Matching numbers alone do not confirm fit with a 1-7/8 in hose.
- Do not confuse with
- 2 in: Oneida's original Dust Deputy port is 2 in OD and 1-7/8 in ID, so one port carries both labels[4]
- Not confirmed
- Not confirmed
Watch out for
- Shop-Vac's 1-7/8 in is a label, not a stated inside or outside diameter.
- The original Dust Deputy's ports are 2 in OD and 1-7/8 in ID per Oneida, so a '2 in' and a '1-7/8 in' part can describe the same port.
- Shop-Vac says its 5430138 hose itself changes to 2-1/2, 1-1/2 and 1-1/4 in; it is a Shop-Vac claim for standard and LockOn inlets, not for every vacuum.
Questions
Can I go from a 1-7/8 in hose to a 2-1/2 in inlet?
Shop-Vac says the adapter supplied with its 5430133 hose can convert the 1-7/8 in end to 2-1/2 in or join two hoses.[1]
Does a 1-7/8 in hose fit the original Dust Deputy?
Not confirmed. Oneida lists the original Dust Deputy ports at 2 in OD and 1-7/8 in ID as nominal dimensions, but matching numbers do not prove a hose end fits.[4]
Which Shop-Vac hose is 1-7/8 in?
Shop-Vac lists the 5430133 as an 8 ft, 1-7/8 in EVA hose for wet/dry vacs with a 1-7/8 in inlet; see the replacement hose guide.[1]