New: HDP22 Oil Puriﬁer for
ﬂuid viscosities up to 1000 cSt
PIHDP22EN

Description
Leveraging more than 30 years of design and field
experience, Pall presents the third in its family of HDP
Series fluid conditioning purifiers – the HDP22 OilPurifier.
The HDP Series combines the water removal
performance of mass transfer purifiers with highreliability and ease-of-use to help ensure maximum
equipment uptime and lowest cost of ownership –enabling you to focus on your process, and not yourequipment.

Improved Performance
The Pall HDP Series Purifier has a vacuum tower designthat results in very efficient water removal.

Maximum Reliability, Lower Costof Ownership
HDP Series Purifiers implement a design for maximum
uptime, tightly based on historical Pall purifier design,
which exhibits higher utilization rates even in the mostdemanding and continuous duty applications.
The HDP22 uses specially selected components to help
ensure maximum reliability and lower cost of ownership.
These premium components include:• Schneider Electric PLC1 and HMI• Reliable Gardner Denver2 VLR series vacuum

HDP Series Oil Purifier
Controlling the dissolved as well as the free water in thereservoir is critical in ensuring the absence of free water
during operation.

pump with 12 month service interval (8760 hours
run time)

With the Pall HDP22 Purifier, this is done efficiently,easily, and reliably. The diagram below illustrates theconcept.

• Rickmeier3 gear pumps — proven performers formore than 20 years in Pall purifiers

Removing free water is never enough!

Water Content (PPM)

15

2

Typical oil
saturation curve

Oil saturation point at
initial temperature

Oil saturation point
after cooler

43
Oil temperature
after cooler

Temperature

Initial oiltemperature

1 Initial water content is above saturation(free water).
2 Maximum water removal capability of‘free water removal’ devices (coalescers,centrifuges, etc.) is to the oil’s saturation
point.
3 Water content achieved with masstransfer dehydration is significantly below
the oil’s saturation point.
4 Water content achieved with masstransfer dehydration remains below theoil’s saturation point even after oil iscooled. This prevents the formation of freewater, harmful to the system.
5 If only free water is removed at initial
temperature, when oil is cooled theamount of harmful free water in the oil
can increase signifcantly.

Performancequality. (2) Larger outlet check valves ensure reduced
backpressure for more efficient, quieter running. (3)Upper tower level vacuum pump protection enabling asafe shutdown in challenging conditions.

The Pall HDP Series of purifiers has a vacuum tower
design that produces very efficient water removal. The
HDP22 removes 100 % of free gases and water (understeady state conditions), and up to 80 % of dissolved
gases and water. It also removes solid contaminants,
with efficiency of 99.95 % (down to 3 microns).

Ease of Use
The HDP22 Series offers the following features
to increase versatility in service and lower cost ofownership:

HDP Series Oil Purifiers showed a 99.95% fasterdehydration rate when compared to a commonly used,similarly sized purifier.

• Low maintenance• Able to work with wide range of oil viscosities

Standard Features(3 cSt to 1000 cSt)

• No utility water required for cooling or pump 			

Pall HDP Series Purifiers come with the following
standard features that many suppliers charge
extra for:

operation – the only utility needed is an electrical
power source• Dissolved Water Sensor (Pall model WS12)• Athalon high performance BX(C)>2000 rated

Focus on Your Process, Not onYour Purifier• Low watt density heater (15kw output)• Pall Profile Star Coalescing Element to reduce 		HDP Series Purifiers requires the minimum of userinteraction, which allows users to focus more on theirprocess and less on the maintenance and upkeep of
their purifier.

particulate filter

risk of carry-over

The HDP Purifier is one of the easiest purifiers to operate.
Simply connect the purifier to the reservoir, power up,and press the start button. “Our standard is that theHDP users are able to just press the button and walkaway even under challenging conditions.”

Design Improvements
Superior dewatering performance when compared to
the Pall HLP Oil Purifiers, the Pall HDP Oil Purifiers boast
a series of design improvements over past versions.
(1) The HDP will come standard with the ability todisplay water content PPM (parts per million) in mostcommonly available hydraulic and lube oils, giving
you an all-in-one solution to measure and ensure oil• Extended vacuum pump oil change interval – 12 		months (8760 hours of run time)• No water utility for cooling or pump operation

Dimensional Drawings
NOTE: Views below without optional panels
EXHAUST AIR
COALESCER

1600 mm63.00 in

PALL 0293 BREATHERW/INDICATOR
UR310 FILTER
HOUSINGAIR OUTLETVESSEL SIGHTGLASSOUTLET

INLET

434 mm
17.10 in

443 mm
17.44 in1105 mm43.50 in

OUTLET
CHECK
VALVE

156 mm
6.14 in

245 mm9.65 in2057 mm81.00 in

HEATERHDP22 Specifications
Flow Rate: 		

23 GPM (87 LPM) @ 60 Hz / 19 GPM @ 50 Hz (73 LPM)

Dry Weight: 		1932 Lbs (876 kg)

Dimensions (caster or floor mount):81” H x 63” L x 43.5” W (206cm x 160cm x 111cm)

Viscosity Range: 		Seal Material: 		
Enclosure: 		Inlet Fluid Temperature: 		
Ambient Temperature:		
(special options available forhigher ambient temperatures)

3 cSt to 1000 cSt
Fluorocarbon
Voltage Code W/1: NEMA 4. Remaining Voltage Codes: IP54
167° F (75° C) Maximum
39° F to 104° F (3.9° C to 40° C)

Inlet Pressure Range: 		-14” Hg to 10 PSI (-0.47 bar to 0.69 bar)

Outlet Pressure Relief Setting:Operating Vacuum Range:
Heater Capacity: 		Paint Scheme: 		
Fluid Filter Housing:

80 psi (5.5 barg maximum)-15” to -24” Hg (-0.51 bar to -0.80 bar)
15 kW (low watt density)
Powder coated (suitable for industrial phosphate ester service)
UR310 Series with 40” element* Note: Pall HDP purifiers containing the R, S, & T voltage codes comply with all applicable EC directives and bears the CE mark.

Purifier Part Numbers / Ordering Information
HDP2212Z

Table 134567

WS12 Water Sensor is standard equipment on all HDP purifiers

Table 3

Table 2CodeVoltage

Frequency CodeFrequency

Mounting CodeDescription

R350 Hz, 3Ø
60 Hz, 3Ø

CCastor
StaticT

380 Vac
400 Vac415 VacW

480 Vac1575 Vac

S4Table 4N

Note: Z indicatesfluorocarbon seals andchlorinated polyethelene
hoses are standard. Contact
Pall Sales for other options.

Table 6

Table 5

Port CodePort Type

Language CodeDescription

Option CodeSpecial Options

P

ISO228 - BSP
Parallel (Inlet: G2,Outlet: G2)
ANSI B1.20.1 - NPTTaper (Inlet: 2”,Outlet: 2”)

DEGermanEnglishSpanish

Omit

No Special Options
Factory Testing With
Fyrquel1 FluidTEN
ESITPTRUFrench
Italian
Portuguese
RussianFI

FinnishFRA
Table 7
Panel CodePanel Options

Omit

No Panel
PanelP

Outlet Filter Element Part Numbers / Ordering Information
UE310 Rating Length
CodeCodeSeal
CodeRating CodeRating (ISO16889)

AZ

ẞ3 (C) ≥ 2000

AP

ẞ5 (C) ≥ 2000

AN

ẞ7 (C) ≥ 2000

AS

ẞ12 (C) ≥ 2000

AT

ẞ25 (C) ≥ 2000

Length CodeSeal Code40Z

Visit us on the Web at www.pall.com/industry
Contact us at www.pall.com/contact
Corporate Headquarters
Port Washington, NY, USA+1-800-717-7255 toll free (USA)+1-516-484-5400 phone
European Headquarters
Fribourg, Switzerland+41 (0)26 350 53 00 phone
Asia-Pacific Headquarters
Singapore+65 6389 6500 phone

Pall Corporation has offices and plants throughout the world. To locate the Pall officeor distributor nearest you, visit www.pall.com/contact.
The information provided in this literature was reviewed for accuracy at the time of publication.
Product data may be subject to change without notice. For current information consult your local
Pall distributor or contact Pall directly.
IF APPLICABLE Please contact Pall Corporation to verify that the product conforms to your national
legislation and/or regional regulatory requirements for water and food contact use.
© Copyright 2022, Pall Corporation. Pall,, Athalon and Profile are trademarks of Pall Corporation.
® Indicates a trademark registered in the USA.
1 Schneider Electric PLC is a trademark of Rockwell Automation.
2 Gardner Denver is a trademark of Gardner Denver Holdings Inc.
3 Rickmeier is a trademark of IDEX Corporation.
4 Fyrquel is a trademark of ICL-IP America Inc.
PIHDP22EN		
July 2022