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Whether you are a small-scale lab, medium
sized batch processor, or large manufacturer, we offer the
right dry-disconnect coupling to suit your needs – with
full support and validation from start to finish.
Beware! There are many so called “sanitary” dry-disconnect
(dry-break) couplings on the market today. But most of them
are based on poppet valve or ball valve designs. By nature,
these couplings are not sanitary because they can trap liquid
and allow bacteria to germinate. A poppet valve will always
contain a dead volume of liquid, no matter what, and a ball
valve design allows a dead space around the ball and the
body. In the ball valve design, some manufacturers have
attempted to eliminate the dead space by inserting plastic
shims (PTFE fillers) around the ball. The problem with fillers
is that you cannot be 100% sure if you have completely filled
in the dead space. It would be impossible to determine the
exact thickness required for the filler because of variations
in the cast body and ball dimensions. If you assemble the
body using a slightly thicker filler, the coupling will
jam and make it impossible to turn the handle. If the filler
is slightly thinner, then certainly there would be a small
void around the ball – enough for the liquid to seep into
the void and create a dead volume for bacteria to germinate.
Dry Link sanitary couplings are the only true sanitary,
drip-free couplings available today because of their simple
butterfly design. The smooth mirror-polished bore has no
voids, dead spaces, crevices, or fillers that could trap
bacteria. Easily drainable and sanitized using steam or
other methods such as CIP, SIP, etc, our sanitary couplings
are routinely specified in pharmaceutical, biotech, semiconductor,
food, and cosmetic industries where ultra cleanliness is
required.
Standard sanitary couplings are supplied with triclover
ends and with wetted internal
components polished to 20 RA micro-inch (0.50 RA micron) mirror finish. Wide
choice of sizes, body & seal materials, end connections
and with full material test certifications (MTR), FDA & USP
certifications are available. Other options such as extra
fine inside polish, and outside polish to
matte finish. Please specify
using this How to Order link.