PWO Water/oil cooler
Lightweight, compact and efficient for
industrial and marine applications
2
e Parker PWO is a compact
and lightweight water/oil cooler
with a high cooling capacity for
its size. e cooling elements
consist of corrugated channel
plates sandwiched between the
front and rear cover plates. e
channel plates are pressed and
vacuum brazed in the same
automated procedure, with
rigorous standards of quality
control.
e unique plate design
provides a highly turbulent ow
throughout the cooler, which is
the key to ecient cooling. is
reduces the risk for clogging,
which in turn makes the PWO
virtually maintenance free.
Endless possibilities
e PWO’s design emphasizes a
number of possibilities for versa-
tile and ecient solutions. It can
easily be adapted to a variety of
needs and special applications
including seawater, aggressive
oils, high pressure and high tem-
perature applications. With
a PWO water/oil cooler in your
system, you can be assured
that the uid in your system is
working at the correct temp-
erature, providing maximum
performance and reliability.
PWO water/oil coolers
in short:
• Light and compact
• Suitable for many
applications
• Easy installation
• Cost-efficient and
environmentally friendly
A unique design
Maintenance free optimal performance
The Olaer Group has been part
of Parker Hannifin since July 1st,
2012. With manufacturing and
sales in 14 countries in North
America, Asia and Europe, the
Olaer Group expands Parker’s
presence in geographic growth
areas and offers expertise in
hydraulic accumulator and cooling
systems for target growth markets
such as oil and gas, power gen-
eration and renewable energy.
The Parker plate water/oil cooler
has a unique plate design which
provides a highly turbulent flow,
which is the key to efficient
cooling.
3
PWO – a complete cooling system
A plate water/oil cooler range to suit all needs
e PWO standard range of
water oil coolers is available in
a wide number of sizes and is in
general available for immediate
o-the-shelf delivery. e basic
material is stainless steel (AISI
316/304), vacuum brazed with
pure copper. AISI 316 can be lim-
ited to the parts of the PWO that
actually come in contact with
uid, such as the channel plates.
PWO only requires small hold up
volumes which equals lower cost
and a more environmentally-
friendly solution. Low install-
ation cost allows for oversizing
for future requirements or peak
loads.
PWO in Mo-steel provides
higher resistance against pitting,
crevice corrosion and chloride-
rich uids compared to AISI
316. e state-of-the-art brazing
technology eliminates the risk of
intergranular corrosion. Mo-steel
can be limited to the parts of the
PWO that actually come in con-
tact with uid, such as the chan-
nel plates. Typical appli-cations
for the Mo-series are in industrial
conditions where high chloride
concentrations put high de-
mands on corrosion resistance.
e pulp and paper industries
also often use processes with
chloride-rich uids.
PWO in stainless steel is free
from copper. e nickel-based
brazing material has increased
resistance to aggressive media
and can endure higher working
temperatures than a copper-
brazed PWO. PWO in stainless
steel is used where the water
supply is corrosive to copper.
Other applications are cool-
ing or heating of oil with a high
content of sulphur or ammonia-
based cooling systems where
copper is prohibited, as well as
pharmaceutical and chemical
applications where copper-
brazed coolers are susceptible to
corrosion from acids and bases.
Another eld of application is in
high-temperature applications,
such as heating of oils.
PWO-M is an extremely small
water/oil cooler, perfect wher-
ever compactness is crucial.
e gaskets and the plates can
be made of various materials to
ensure compatibility with the
refrigerant. Even if a costlier, high
performance metal is required
for the heat transfer surfaces,
the front and back plates can be
made of more basic materials
to reduce cost. e snap-in-
place connections allow easy
assembly and the use of dier-
ent metals without risk of weld
deterioration. e PWO-M with
plates made of titanium resists
corrosive seawater in onboard
engine coolers and applications
containing de-ionized water or
aggressive uids. See separate
brochure, which can be down-
loaded from www.parker.com.
PWO with double walled chan-
nel plates are designed for appli-
cations where high thermal
eciency is a requirement and
the risk of internal leakage must
be minimized. It is primarily
used in sanitary water appli-
cations, coolers for the chemical
process industries, food and
pharmaceutical industries.
PWO for high pressure is
designed to meet the high
demands in applications with
working pressures up to 45 bar
(Note: special models and con-
gurations are available for max
working pressure 120 bar). With
the exception of high pressure
applications such as within the
process industry, the PWO is
perfect for use with new, high-
capacity, environmentally-
friendly refrigerants. e PWO’s
greater heat transfer eciency
provides opportunites linked to
energy-cost and environmental
savings.
4
Heat Load (kW)
B5T
Heat Load (kW)
B8T
Pressure Drop (bar)
B8T
Pressure Drop (bar)
B5T
Oil type: ISO VG 46
Oil/water flow ratio: 2/1
Inlet oil temperature 60°C at Δ p max 2 bar
Inlet water temperature 20°C
Oil Flow (l/min)
Oil Flow (l/min)
Oil Flow (l/min)
Oil Flow (l/min)
5
Heat Load (kW)
B15
Heat Load (kW)
B10T
Pressure Drop (bar)
B10T
Pressure Drop (bar)
B15
Oil type: ISO VG 46
Oil/water flow ratio: 2/1
Inlet oil temperature 60°C at Δ p max 2 bar
Inlet water temperature 20°C
Oil Flow (l/min)
Oil Flow (l/min)
Oil Flow (l/min)
Oil Flow (l/min)
6
Heat Load (kW)
B25T
Heat Load (kW)
B12
Pressure Drop (bar)
B12
Pressure Drop (bar)
B25T
Oil type: ISO VG 46
Oil/water flow ratio: 2/1
Inlet oil temperature 60°C at Δ p max 2 bar
Inlet water temperature 20°C
Oil Flow (l/min)
Oil Flow (l/min)
Oil Flow (l/min)
Oil Flow (l/min)
7
Heat Load (kW)
B16
Heat Load (kW)
B28
Pressure Drop (bar)
B28
Pressure Drop (bar)
B16
Oil type: ISO VG 46
Oil/water flow ratio: 2/1
Inlet oil temperature 60°C at Δ p max 2 bar
Inlet water temperature 20°C
Oil Flow (l/min)
Oil Flow (l/min)
Oil Flow (l/min)
Oil Flow (l/min)
8
Heat Load (kW)
B35
Heat Load (kW)
B120T
Pressure Drop (bar)
B120T
Pressure Drop (bar)
B35
Oil type: ISO VG 46
Oil/water flow ratio: 2/1
Inlet oil temperature 60°C at Δ p max 2 bar
Inlet water temperature 20°C
Oil Flow (l/min)
Oil Flow (l/min)
Oil Flow (l/min)
Oil Flow (l/min)
9
Heat Load (kW)
B56
Pressure Drop (bar)
B56
Oil type: ISO VG 46
Oil/water flow ratio: 2/1
Inlet oil temperature 60°C at Δ p max 2 bar
Inlet water temperature 20°C
Together we review all conditions
– the water/oil cooler performance,
the working environment, the
type of uid to be cooled, etc. Be-
cause of our deep knowledge and
long experience, we can build on
previous solutions and discuss all
feasible solutions. All information
will be entered into the calcula-
tion software, which will quickly
and accurately show the most
adequate solution. It is a simple
and easily accessible aid, which
based on given parameters will
select the most adequate cooler
with regard to function and
economy. e software can
be downloaded for free
from www.parker.com/acde.
Our technicians are
also at your disposal if
you have any inquiries
about the sofware
and its use.
Oil Flow (l/min)
Oil Flow (l/min)
A lot more than excellent coolers
Service life
10
PWO Standard Range of water
oil coolers is available in a wide
number of sizes and is in
general available for immedi-
ate o-the-shelf delivery. e
basic material is AISI 316 stain-
less steel, vacuum brazed with
pure copper. e PWO requires
only a small refrigerant volume
resulting in lower cost and a
more environmentally-friendly
installation. Low installation cost
allows for oversizing to accom-
modate for future increase in
requirements or peak loads.
Units size >B35–90 should always be fixed
with two clamps per cooler >B35–90
Clamp Part Number A B
PWOCLAMPB5 219 90
PWOCLAMPB8 346 90
PWOCLAMPB10B12 319 135
PWOCLAMPB15 496 90
PWOCLAMPB16B26 408 135
PWOCLAMPB25B28 554 135
PWOCLAMPB35 422 259
PWOCLAMPB50B120 554 259
TYPE A
mm
(±2)
B
mm
(±1)
C
mm
(±1)
D
mm
(±1)
E
mm
(±1) (+0.5% - 1.5%)
F
* = x number of
plates (±1)
G
mm
R
mm
B5T 193 76 154 40 20.1 2x¾” - 2x½” 2.24 x * + 4 7 18
B8T 317 76 278 40 20.1 2x¾” - 2x½” 2.24 x * + 4 7 18
B10T 289 119 243 72 20.1 2x1” - 2x¾” 2.24 x * + 4 6 22
B12H 287 117 234 63 27.1 2x1¼” - 2x1” 2.24 x * + 4 6 22
B15 465 72 432 40 20.1 2x¾” - 2x½” 2.24 x * + 4 7 16
B16 376 119 320 63 27.1 2x1¼” - 2x1¼” 2.24 x * + 4 6 23
B25T 526 119 479 72 20.1 2x1¼” - 2x1” 2.24 x * + 4 6 23
B28 526 119 470 63 27.1 2x1¼” - 2x1¼” 2.24 x * + 4 6 23
B35 393 243 324 174 27.1 2x1½” - 2x1¼” 2.34 x * + 8 3 35
B56 525 243 430 148 54.2 ISO G 4x 2½” 2.44 x * + 14 3 48
B120T 525 243 456 174 27.1 2x1½” - 2x1¼” 2.29 x * + 10 4 35
Vibration damper A30x15 M8x20 is available
separately with Parker Part Number 214025
11
TYPE Max Temp
°C
Min Temp
°C
Working Pressure
155 °C bar
Test Pressure
bar
Empty Weight kg
* = number of plates
B5T 225 -196 31 50 0.50 + NoP* x 0.05
B8T 225 -196 31 50 0.81 + NoP* x 0.08
B10T 225 -196 31 50 1.39 + NoP* x 0.10
B12H 225 -196 28 45 1.44 + NoP* x 0.12
B15 225 -196 31 50 1.31 + NoP* x 0.10
B16 225 -196 31 50 1.73 + NoP* x 0.12
B25T 225 -196 31 50 2.15 + NoP* x 0.18
B28 225 -196 28 45 2.26 + NoP* x 0.16
B35 225 -196 31 50 6.99 + NoP* x 0.34
B56 225 -196 28 45 16.27 + NoP* x 0.42
B120T 225 -196 31 50 10.27 + NoP* x 0.40
Material:
Plates: EN 10028/7-1.4401 (AISI 316)
Brazing: Pure copper
Connections: EN 10272-1.4401 (AISI 316)
B5T
Dimensions
76 x 193 mm
B8T
Dimensions
76 x 317 mm
B10T
Dimensions
119x 289 mm
B12H
Dimensions
117 x 287 mm
B15
Dimensions
72 x 465 mm
B16
Dimensions
119 x 376 mm
B25T
Dimensions
119 x 526 mm
B28
Dimensions
119 x 526 mm
B35
Dimensions
243 x 393 mm
B56
Dimensions
243 x 525 mm
B120T
Dimensions
243 x 525 mm
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