Non-spill couplings
NS1
NS1 is a very small plastic non-spill coupling for tubing of 1/8" and below that is connected and disconnected frequently. Its closed valve design keeps air bubbles and contaminants out of the line, so there is no need to purge after reconnecting. The tubing can move at the connection without kinking. Polypropylene body, EPDM or FKM seal, rated up to 1 bar and 0 to 49 °C.
NS1 by material
The seal material determines compatibility with your fluid.
- 12 items
- 1 manufacturer
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Buying guide
How to choose NS1
What matters when choosing: properties, comparison and typical applications.
Selection criteria
| Criterion | Available | Note |
|---|---|---|
| Connection | 1/8" hose barb, 1/4-28 male thread, 1/4-28 flat-bottom port | Threads common on lab and analytical equipment. |
| Mounting | in-line or panel mount | Panel mount inserts for front plates. |
| Seal | EPDM, FKM | Some FKM versions with a Hastelloy C valve spring. |
| Pressure | up to 1 bar | For unpressurised or low-pressure lines. |
| Temperature | 0 to 49 °C |
Frequently asked questions
- Which tubing is NS1 designed for?
- For small tubing of 1/8" and below that is reconnected often. Besides hose barbs, there are 1/4-28 threaded terminations and flat-bottom ports.
- Do I need to purge the line after connecting?
- No. The closed valve design lets almost no air in on disconnect, so there are no air bubbles to flush out of the system.
- When should I choose FKM?
- When EPDM is not compatible with your fluid, for example oils or many solvents. Some FKM parts also have a Hastelloy C valve spring for chemically demanding media.
- Is there a panel mount version?
- Yes, panel mount inserts with hose barb or flat-bottom port can be fixed in a wall or front plate.