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Oftentimes, situations
arise when a company handles several types of chemicals.
The containers may be individually marked, color coded and
warnings posted to keep the chemicals separate. However
there is a possibility that accidentally, someone transfers
the wrong chemical from one container to another resulting
in hazardous mix ups. Use of Dry Link’s keyed couplings
can be a fool proof solution for avoiding cross contamination
of chemicals.
Keyed Couplings
• Prevent accidental connections and cross contamination.
• Matched sets of couplers and adapters with mechanical
keys.
• Keyed units will not latch onto standard non-keyed units.
• Used in batch process plants & manifolds for preventing
cross-contamination of fluids.
• Mechanical interlock allows only a matching coupler and
adapter to be connected.
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½", ¾", 1", & 1½"|DN 15, 20, 25
& 40 (SS316)
1", 1½", & 2"|DN 25, 40,
& 50 (Hastelloy
C)
For a particular key code, custom-machined matched couplers
and adapters can latch only onto each other. Coupler keys
are designated as 1C, 2C, 3C, etc., and adapter keys as
1A, 2A, 3A, etc. So a coupler stamped with key 1C will connect
only with an adapter stamped with key 1A. When ordering,
please specify key code numbers of your choice. |
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2", 3",
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4"|DN 50, 80, & 100 (SS316 and Alloy 20) |
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For 2, 3, and 4 inch size
couplings, each coupler and adapter of the set has
an attached key on each side. of the body. Coupler
keys are designated 1F, 2F, 3F, etc. and the adapter
keys 1M, 2M, 3M, etc. These designations are stamped
on the keys themselves. Keys are field replaceable. |
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One key (for example, 5F)
is fitted to the left-hand side and one (for example,
4F) to the right-hand side of a coupler to give
the coupler a unique designation 5FL/4FR. The mating
adapter for this coupler will have a unique designation
of 5ML/4MR. Each combination is given a set code,
in this case set code “T”. When ordering, please
specify the set code of your choice. |
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Coupler |
Adapter |
Set Code |
Marking on Left Key |
Marker on Right Key |
Marking on Left Key |
Marking on Right Key |
A |
1F |
1F |
1M |
1M |
B |
1F |
2F |
1M |
2M |
C |
1F |
3F |
1M |
3M |
D |
1F |
4F |
1M |
4M |
E |
2F |
1F |
2M |
1M |
F |
2F |
2F |
2M |
2M |
G |
2F |
3F |
2M |
3M |
H |
2F |
4F |
2M |
4M |
I |
3F |
1F |
3M |
1M |
J |
3F |
2F |
3M |
2M |
K |
3F |
3F |
3M |
3M |
L |
3F |
4F |
3M |
4M |
M |
4F |
1F |
4M |
1M |
N |
4F |
2F |
4M |
2M |
O |
4F |
3F |
4M |
3M |
P |
4F |
4F |
4M |
4M |
Q |
5F |
1F |
5M |
1M |
R |
5F |
2F |
5M |
2M |
S |
5F |
3F |
5M |
3M |
T |
5F |
4F |
5M |
4M |
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