Custom Machine has provided Heat Exchanger units for a variety of
custom orders, including larger units, and modified stock units.
We welcome inquiries concerning your specialized needs.
John's Custom Machine, Inc ---- 727-581-1700
Heat Exchangers manufactured with 316 Stainless Steel. The inner
Tubes are a specialty grade of 316 Stainless Steel. We also
offer the stainless flex pipe for installation. Standard size is
4 1/2" by 24", however custom sizes are available.
Big Daddy TM
photos below depict some of our models that are available. All of
our models are manufactured with 316 Stainless throughout. The
stainless inner tubing is pressure rated to 10,000 PSI. The outer
shell, also manufactured from stainless, is available with different
pressure ratings. When ordering, please ask for specify either a
low or high pressure rated housing. By attaching the
optional diverter valve, exhaust gases are routed away from the
exchanager when it is desired to operate the engine without heating
water in the exchanger. The diverter valve is usually a
requirement when performing jobs such as water cleanup. All of our
models can be easily mounted on all engine types - Briggs, Kohler,
etc..and on all machines. They can be used on slide-in truck
mounts and shaft drives.
provide repalcement Heat Exchangers for OEMs such as Chem Tex, Halcyon,
Steam Genie, Chemspec, Hydrmaster, Vortex, ETC ETC ETC., as well as
custom units as required by our customers.
Steel Header mounts on engine exhaust ports and connects to heat
exchanger with stainless flex pipe. Below is a lright hand header,
a straight out header and two exhaust diverter valves.
Adaptor connects heat exchanger with 2 stainless flex pipes to
mounting flanges on engine exhaust ports. This mounting
arrangement is used if you do not use the stainless header.
installing the heat exchanger there are two important things to
remember. On the Heat Exchanger there are four ports or fittings
as well as the exhaust-in and exhaust-out ports. The ports are
- cold water-in, hot water-out, one for a drain if required, and
one for a pressure relief valve. The 'hot water out fitting' must
point vertically up (12 o'clock position) in order to allow for
complete water-fill in the exchanger. If this is not done, the
exchanger will only partially fill with water. Also,
for safety reasons, it is strongly recommended to mount a pressure relief valve. This can be mounted in one of the heat exchanger ports or elsewhere in the system.
photos below depict a typical heat exchanger and diverter hookup
without a stainless header These photos are courtesy of Murray
Peacock, Peacock Prolean - one of our Canadian customers
Murray Peacock Monday, 9/8/03, 6:03 PM
Hi John and Lynn: After a few months of using the heat exchanger, I
would like to give my opinion. I just finished the small details of the
truckmount, such as installing a muffler after the HX, which makes it
much quieter. On residential, I use the diverter half open, I get great
heat, (quick connects are very hot), but the temp doesn't spike after I
put the wand down a few momemts to move furniture. The stress and worry
about overheating is gone. Anyone who heats with propane, kerosene just
has too much money to spend. On commercial work, the heat diverter is
completely closed, and the heat is almost as hot as my old steamaction
double barrel exchangers. (and beleive me, steamaction is a benchmark)
However, I find your exchanger temp is more consistant. The shelving is
great too. Will send photos. Talk soon.
This photo depicts and double heat exchanger system with an exhauster diverter valve built into the header.
Below is a left hand header, a straight out header, a y-adaptor and a 90 fitting. All are manufactured with 316 Stainless.
Exhaust Diverter Valve is used to divert engine exhaust from the Heat
Exchanger when not required. It manually or remotely diverts
exhaust from your your heat exchanger. Mounting brackets are not
required as the Diverter Valve is directly mounted to the exhaust inlet
end of the Heat Exchanger. The diverter valve will always be in
the heat mode unless the handle is moved and locked into the divert
position. It is strongly recommended that the diverter be used
with our heat exchanger if you are running a 20HP Kohler engine or
larger as some of our customers have found the water temps too high with
our exchangers on these engines.
Custom Machine also manufactures blower preheaters or post-heaters in a
number of different sizes. These units have proven to be very
effective in raising water temps approximately 40 degrees. They
can be installed on slide ins and PTOs. This unit is manufactured with a
stainless housing and copper tubing.
Typical Exhaust Exchanger Hookup
Heat Exchanger on a custom diesel unit mounted in the vertical position.
EXHAUST DIVERTER VALVE
A testimonial about our post-heater (pre-heater) from Matt King.
anyone has a Steam Genie pto or another direct drive without a blower
heat exchanger, I would recommend buying one from John at Hot
Heatexchangers! This was my second day back to work with my new
blower exchanger installed on my SLG> pto and I was getting 235-245
degree water coming out of the machine all day long. It is only 40
degrees outside and I was running a 2 jet wand with
9502's at 500 psi., cold water only coming into the machine. With
the wand keyed open constantly it would not drop below 225. I'm
very impressed with his exchangers! I ran this after the coolant
exchanger. So it's a post heater. These things are awesome!
I'm not sure why they didn't put these on from the factory..
STAINLESS WASTE TANKS AND MIX TANKS
manufacture Stainless Steel Waste Tanks in various sizes. If you
are interested in a waste tank please call and will furnish you with a
drawing as to your specifications. We also manufacture stainless
mix tanks which can be used in your plumbing circuit to attain higher
HEADERS AND FITTINGS
STAINLESS FLEX HOSE
BLOWER PRE-HEATERS OR POST HEATERS
Fiberglass Insulation Wrap for your header, heat exchanger, etc etc., This is used to minimize heat loss.
Our new COMBO Header/Exhaust Diverter shown below on a Kohler engine