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Dry Link dry-disconnect couplings (also called “dry-break couplings”) can be used anywhere a hose is used
to transfer fluids, especially where the fluids are hazardous, toxic, corrosive or flammable. This includes bulk
fluid transfer applications such as tank trucks, railroad cars, and portable tank containers. It also includes
in-plant switching manifolds and moving equipment such as portable batch reactor vessels.
Standard couplings
Standard Dry Link couplings consist of a coupler that can be attached to a hose
and an adapter that can be fixed to a tank, manifold, pipe, or other equipment.
An automatic interlocking mechanism shuts off both the coupler and
the adapter when the coupling is disconnected.
Standard couplings are available in several sizes, end connections,
and seal materials.
Sanitary couplings
Sanitary couplings are typically specified in pharmaceutical, biotech, semi-
conductor, food, and cosmetic industries where ultra cleanliness is required. Sanitary
couplings are internally polished to 20 RA micro-inch mirror finish. The smooth bore
has no voids, dead spaces, crevices, or fillers that may trap bacteria. Easily sanitized
using steam or other methods. FDA and USP certification is available as an option.
Other options are also available, such as extra fine RA micro-inch inside
polish, electro-polish, and outside polish to matte finish.
Sanitary couplings are available in the same sizes as standard
couplings. They are also available in smaller sizes, ½ inch and ¾ inch.
Housing material
All wetted parts of standard and sanitary couplings are Type 316 stainless steel.
For services where severe corrosives are a concern, Dry Link couplings are also
available with Alloy 20 (Carpenter 20) or Hastelloy C wetted parts construction.
Keyed couplings
Keyed couplings are used in batch
process plants and manifolds for
preventing accidental
cross-contamination of fluids.
A mechanical interlock
allows only a matching coupler
and adapter to be connected.
Please see details on page 11.
If your art passes the blue line, it should also extend to the red line.
If your art passes the green line, it may get clipped off.