Specifications

13
Notes:
• Use DRI-STEEM's hard pipe adapter kit to connect
the steam outlet to hard pipe. Use a hose clamp to
connect the steam outlet to vapor hose. Use a hose
cuff and clamps to connect the steam outlet to
tubing.
• Thin-walled tubing heats up faster than heavy-walled
pipe causing less steam loss at start-up.
• Hard pipe or tubing diameter must match
VAPORMIST steam outlet size 1½" (DN40) or
2" (DN50).
• See the Maximum Steam Carrying Capacity and
Steam Loss tables on Page 17.
• Maximum capacity of dispersion tube (without
condensate drain):
– 1½" (DN40): 28.4 lbs/hr (13 kg/h)
– 2" (DN50): 56.8 lbs/hr (25.8 kg/h)
• Orient dispersion tube so that tubelets (steam
orifices) point up.
• When mounting the humidifier above the level
of dispersion tube, see the drawing on Page 16.
• Failure to follow the recommendations on this page
may result in excessive back pressures on the
humidifier. This may lead to dispersion tube(s)
spitting, steam blowing through water seals, or
leaking gaskets.
• The table at right shows hose kit sizes by humidifier
model. A hose kit includes vapor hose, a dispersion
tube and hardware. Note that the capacities of
models VM-30 and VM-34 require multiple tube
assemblies and therefore cannot use a hose kit.
For multiple tube assemblies, see information on
RAPID-SORB on Page 15.
VAPORMIST
®
DISPERSION
Hose kit sizing by model
Single tube without condensate drain
Humdifier
models
Hose kit
(vapor hose, dispersion
tube and hardware)
Maximum capacity of
dispersion tube
lbs/hr kg/h
VM 2-8
1½" (DN40) hose kit
without drain
28.4 13
VM 10-16
1½" (DN40) hose kit
with drain
56.8 25.8
2" (DN50) hose kit
without drain
56.8 25.8
VM 21-25
2" (DN50) hose kit
with drain
85.2 38.6
VM 30-34
These models require multiple tube
assemblies and cannot use a hose kit.
OM-351-1
DC-1447
Duct
Single dispersion tube without
condensate drain
VAPORMIST
humidifier
Secure and seal
escutcheon plates
Mounting nut
3/8" - 16 (M10)
Tube pitch: 2"/ft (15%)
Pitch: 1/8"/ft (1%)
See the first note below.
90° long sweep
or two 45° elbows
Interconnecting plumbing may
be hose, tubing or hard pipe.
Insulate tubing and hard
pipe to reduce steam
loss.
Dispersion tube
escutcheon plate
3.25"
(82.5 mm)
3.25"
(82.5 mm)
VM99-C-0302.pdf 13 11/19/2009 9:51:32 AM