Choose the surface first
Select tools around the area you are working on: bodywork, glass, wheels or interior trim. Follow both the tool and surface-care directions.
$30.00
Free standard US shipping
Contiguous 48 states & DC · 4–7 business days total
30-day returns
Merchant-paid return shipping. Read the policy
Questions about this item? [email protected]
Product brand: MTM Hydro
The details
PRIMA Stainless Steel Plugs
Veloci’s American-made Prima quick connects are made of the highest quality American stainless-steel. 100% machined from round bar stock at Veloci’s manufacturing facility in Minnesota. Stainless-steel fittings offer anti-corrosive properties and reliable performance. They are commonly found at all joints where high pressure fluid may need to be disconnected after use. Other areas such as lances, tips, and foam cannons are convenient places to install these QC's.
What makes PRIMA better than the rest?
303 stainless-steel sourced from the City of Steel – Pittsburgh, PA USA.
100% machined to precise specifications: +/- 127µm, +/- 1º on working angular surfaces.
3x more precise than the competition: precision means better fit and longer life.
Tested Durability: Proven resistance to harsh chemicals.
Rust-Resistant Design: Built with high-grade stainless steel for longevity.
Quality controlled by digital comparator
De-burred and washed for premium polish and smoothest action in the industry
EPDM seals for high temperature and chemical tolerance
All Veloci fittings are National Pipe Thread (NPT) which means they have a tapered male or female thread (depending upon the model). NPT is mainly used in North America and was developed on the concept of interference by the third thread. When installing NPT fittings to another NPT thread we recommend that you use 4-5 wraps of Teflon tape wound clockwise, or 2-3 drops of Loctite thread sealant. British Standard Pipe Thread (BSP) is found in the European market and has a different thread pitch than NPT. BSP is also considered a 'straight thread' which means it has no taper at the end. When installing NPT on BSP or vice versa, use 6-7 wraps of Teflon or 2-3 drops of Loctite and tighten accordingly. When tightening opposing thread styles (BSP and NPT) you will experience interference sooner and you will not be able to tighten the fitting as far as like-threads, but will still have a tight seal, just make sure to use the recommended amount of Teflon tape or Loctite.
Tips:
When purchasing plugs and couplers the male fitting has exposed threads while the female fitting has threads on the interior of the fitting. See images for reference.
1/4" plugs are normally found at the end of the pressure washing system, on a spray wand or other accessories.
3/8" fittings are normally found between the pump and the spray gun where 3/8" hose is commonly used.


Know the fit
PRIMA Stainless Steel Plugs
Veloci’s American-made Prima quick connects are made of the highest quality American stainless-steel. 100% machined from round bar stock at Veloci’s manufacturing facility in Minnesota. Stainless-steel fittings offer anti-corrosive properties and reliable performance. They are commonly found at all joints where high pressure fluid may need to be disconnected after use. Other areas such as lances, tips, and foam cannons are convenient places to install these QC's.
303 stainless-steel sourced from the City of Steel - Pittsburgh, PA USA.
Rust-Resistant Design: Built with high-grade stainless steel for longevity.
EPDM seals for high temperature and chemical tolerance
Choose & use with care
Select tools around the area you are working on: bodywork, glass, wheels or interior trim. Follow both the tool and surface-care directions.
For backing plates, pads and powered-tool accessories, compare size, attachment and compatible-model information. Similar appearance is not proof of a match.
Use a clean tool and the method described for that item. Test suitability discreetly where the product directions recommend it; no tool is advertised here as universally scratch-proof.
Follow the instructions supplied for the exact product. Features, limits and care directions are specific to the selected model.
Order preparation takes 1–3 business days, followed by 3–4 business days in transit: 4–7 business days in total. Standard shipping is free to the contiguous United States and DC, with no minimum order.
Request a return within 30 calendar days after delivery. We pay return shipping. After receipt, inspection and initiation of an approved refund take 5–7 business days.
Before you decide
No. Choose for the surface and intended use stated on the specific listing. Follow the supplied care directions and do not assume a brush intended for wheels is suitable for every painted surface.
Check the listed diameter, attachment and compatible machine or backing-plate information. Size and fit variants are shown within the relevant product rather than treated as interchangeable parts.
Use the options and measurements on the exact product page. Photographs can look different across screens; available choices are limited to the options actually shown for that item.
Check the selected product’s description and included-parts information. Accessories pictured in a use scene are included only when the listing says so.