What is a 1 NPT single cartridge vessel used for?

It is a compact 316L sanitary housing for one cartridge element, suited to point-of-use polishing, small process lines and sampling where a single element meets the flow requirement.

How is the 1 NPT version different from the 3/4 NPT version?

Both are single-cartridge 316L vessels; the difference is the connection size — 1 NPT suits lines with a 1-inch thread, while the 3/4 NPT version fits tighter spaces or smaller lines.

Can this be used with a multi-round housing?

Yes. A common arrangement puts a multi-round housing on the main line for bulk flow and single-cartridge vessels at distributed point-of-use or sampling points.

KOSA Filtration · Sanitary Cartridge Housings

316L Single Cartridge Filter Vessel — 1 NPT

A compact 316L stainless steel single-cartridge housing with 1 NPT connections for point-of-use polishing, small hygienic lines and sampling.

Key Takeaways

1 NPT single-cartridge vessel for point-of-use and small lines.
316L body for cleanable, hygienic service.
Pairs with multi-round housing for main-line + distributed points.
3/4 NPT sibling available for tighter spaces.

316L single cartridge vessel — 1 NPT

The KOSA 316L single-cartridge filter vessel with 1 NPT connections is a compact, hygienic housing for point-of-use polishing, small process lines and sampling where one standard sanitary cartridge element is enough.

316L Multi-Round 4 Cartridge Housing

Industrial-scale sanitary cartridge vessel.

316L Single Cartridge Vessel 3/4 NPT

Small-footprint sanitary housing.

316L Bag Filter Vessel

Sanitary bag vessel for coarse pre-filtration.

1 NPT vs 3/4 NPT vs multi-round

Factor	1 NPT single	3/4 NPT single	Multi-round
Connection	1" NPT	3/4" NPT	Flanged / clamped manifold
Flow	Low–moderate	Lowest	High
Footprint	Compact	Smallest	Larger
Best fit	Point-of-use, small lines	Tight-space sampling	Main-line clarification

Connection size should match your existing line fittings; confirm thread standard (NPT) and any required gasket material before ordering.

Where it fits

Use the 1 NPT single-cartridge vessel as a distributed polishing or protection point after a multi-round main housing, or as the primary filter on a small-volume hygienic line. Its 316L body supports cleanable, hygienic service.

Which cartridge vessel do you need?

1. Is this a small or distributed line?

Yes → a single-cartridge vessel (1 NPT or 3/4 NPT) is the right size.

2. Do fittings allow a 1" connection?

Yes → choose 1 NPT; if space/thread is tighter, the 3/4 NPT version fits.

3. Is the flow too high for one element?

Yes → step up to the multi-round 316L housing and keep singles for point-of-use.

Related application notes:
Food Vessels Food Liquid

Need a single-cartridge vessel for your line?

Tell KOSA your connection size, flow and micron target — we will match the 1 NPT or 3/4 NPT vessel and element.

Request a quote & technical review