Desiccant Dryers

Begin Here: Sizing Walker Filteration Desiccant Dryers

Use this formula to select the appropriate desiccant dryer for your application:
Max Compressor Inlet Flow Rate / (Min Operating Pressure CF x Max Temperature CF x Pressure Dewpoint CF) = Dryer Flow Rate Needed

Correction Factors

Operating Pressure (PCF)	PSIG	58	72	87	100	116	130	145	160	174	189	PROSFD Only
	PSIG	58	72	87	100	116	130	145	160	174	189	203	218	232
	Correction Factor	0.62	0.75	0.87	1	1.12	1.25	1.37	1.5	1.62	1.75	1.87	2	2.12

Temperature (TCF)	°F	68	77	86	95	104	113	122
	PROSFD Correction Factor (4 to 35 SCFM)	1.07	1.06	1.04	1	.88	.78	.55
	PRODRY Correction Factor (46 to 360 SCFM)	1.3	1.2	1.1	1	.75	.65	.45

Pressure Dewpoint (DCF)	°F	-4	-22	-40	-94	-100
	PROSFD Correction Factor (4 to 35 SCFM)			1	0.7
	PRODRY Correction Factor (46 to 360 SCFM)	1.23	1.2	1	HP Cartridge Required
	PRODRY Correction Factor (46 to 360 SCFM)	1.23	1.2	1	0.8	.77

Example

Requirements		Correction Factor
Max Compressor Inlet Flow Rate	15 SCFM
Min Operating Pressure (to Dryer)	87 psig	PCF = 0.87
Max Temperature (to Dryer)	77°F	TCF = 1.06
Pressure Dew Point	-94°F	DCF = 0.7
Corrected Dryer Flow Rate	Inlet Flow Rate (PCF x TCF x DCF)	15 / (0.87 x 1.06 x 0.7) = 23.2 SCFM

The appropriate dryer model would be: PD0025, which has an inlet flow rate of 25 SCFM.

PROSFD - Low Flow Desiccant Dryers

With flow rates from 4 – 35 SCFM, our range of lower flow PROSFD models provide a proven solution for compressed air drying and are ideal for smaller, point of use applications.

Designed to deliver optimum performance in line with the highest standards of air purity, as specified in ISO 8573-1: 2010, PROSFD models PD004 to PD035 are supplied as standard with a XA grade 0.01 micron coalescing filter.

With a compact design and multi-ported manifold, the dryer can be installed vertically and horizontally, providing a flexible solution to your compressed air drying needs. This highly reliable, high efficiency range of dryers features built-in energy management, allowing the purge flow to be isolated during periods of low demand for efficient use of compressed air. Whatever your application requirement, PROSFD delivers a compressed air drying solution you can trust.

Specifications

Standard Pressure Depoint: -40°F
Optional Pressure Dewpoint: -4°F
(-100°F w/ High Performance Cartridge)
Working Pressure Range: 58 ~ 188.5 psig
Power Supply: 12-24VDC or 100-240VAC @ 50-60Hz
Minimum Ambient Temperature: 41°F
Inlet Temperature Range: 35 ~ 122°F

Features

Dewpoint management sensor (hygrometer) increases operating efficiency up to 81% (fitted with DMC controller)
Top loading cartridge design and lifting handle for fast and efficient servicing
Compact modular design with built-in lifting hook
Multi-ported manifold for flexible installation
Advanced desiccant blend delivers optimised dewpoint and improved performance
Intelligent LED controller with built-in energy management (supplied as standard)
Anodised aluminum extrusions provides corrosion protection
Externally fitted silencers for dramatically reduced service time

0.01 Micron Pre-Filter

Supplied as standard

LED Controller

Supplied as standard

1 Micron Dust Filter

Integrated into desiccant cartridge

PD004 to PD035 - Technical Specs

Flow Rates 4 SCFM to 35 SCFM

Click here to learn how to size this dryer.

Pipe Size	Inlet Flow Rate (SCFM)*	Dimensions (Inches)						Weight (Lbs)	# of Cartridges	Unit Model	Included Filter
Pipe Size	Inlet Flow Rate (SCFM)*	A	B	C	D	E	F	Weight (Lbs)	# of Cartridges	Unit Model	Included Filter
3/8"	4	17.52	11.02	3.62	0.87	6.3	16.34	29	2	PD004	A30032XA
3/8"	6	20	11.02	3.62	0.87	6.3	18.7	31	2	PD006	A30032XA
3/8"	8	22.24	11.02	3.62	0.87	6.3	21.06	33	2	PD008	A30032XA
3/8"	10	25	11.02	3.62	0.87	6.3	23.82	36	2	PD010	A30032XA
3/8"	15	32.09	11.02	3.62	0.87	6.3	30.91	43	2	PD015	A30032XA
3/8"	25	47.4	11.02	3.62	0.87	6.3	40.75	53	2	PD025	A30032XA
3/8"	35	61.77	11.02	3.62	0.87	6.3	56.3	68	2	PD035	A30032XA

*Stated flow capacities based on an inlet pressure of 100 psig, inlet temp of 95°F and outlet pressure dewpoint of -40°F.
For capacities at other conditions, please refer to the correction factors section.
Flow rates referenced to standard conditions, 68°F at 14.7 psia, and 0% relative water vapor.

Service Kits

Kit A: 6,000 Hours

Silencer Kit

Dryer Model	Kit Number
PD004	PD1SK01
PD006-PD035	PD1SK02

Kit B: 12,000 Hours

2 plastic desiccant cartridges, pack of sealing O-rings and sealing washers, instruction manual, controller re-set disc.

Dryer Model	Kit Number
PD004	PDC004-12000
PD006	PDC006-12000
PD008	PDC008-12000
PD010	PDC010-12000
PD015	PDC015-12000
PD025	PDC025-12000
PD035	PDC035-12000

Kit C: 24,000 Hours

Solenoid valves, shuttles, shuttle seats, O-rings, diaphragms (including diaphragm springs and brass discs)

Dryer Model	Kit Number
PD004-PD035	VSKS 01

Note: To complete a 24,000 hour service, both Kit B and Kit C are required.

PRODRY - Large Flow Desiccant Dryers

The all new Walker Filtration PRODRY models feature major design changes that deliver significant energy savings, dramatically reduced service times and optimum performance across the range.

Tested and validated to international standards, PRODRY’s multi-voltage capabilities allow for worldwide installation.

Now with the option to upgrade to advanced dewpoint management for even greater operating efficiency - whatever your application requirement, PRODRY’s optimum performance delivers a compressed air drying solution you can trust.

Specifications

Standard Pressure Depoint: -40°F
Optional Pressure Dewpoint: -4°F
(-100°F w/ High Performance Cartridge)
Working Pressure Range: 58 ~ 188.5 psig
Electonic Control (LED): 115 or 230 VAC @ 50-60Hz
Depoint Control (DMC): 24 VDC
Inlet Temperature Range: 35 ~ 122°F

Features

Top loading cartridge design and lifting handle for fast and efficient servicing
Dewpoint management sensor (hygrometer) increases operating efficiency up to 81%
(fitted with DMC controller)
Compact modular design with built-in lifting hook
Multi-ported manifold for flexible installation
Advanced desiccant blend delivers optimised dewpoint and improved performance
Intelligent LED controller with built-in energy management (supplied as standard)
Anodised aluminum extrusions provides corrosion protection
Externally fitted silencers for dramatically reduced service time

Unique Purge Plug

Select orifice size to suit changing pressure requirements

Tower Pressure Gauges

Clearly visible diagnostics for accurate pressure readings

Optional DMC Controller

Advanced dewpoint management & energy savings

PD0046 to PD0360 - Technical Specs

Flow Rates 46 SCFM to 360 SCFM

Click here to learn how to size this dryer.

Pipe Size	Inlet Flow Rate (SCFM)*	Dimensions (Inches)						Weight (Lbs)	# of Cartridges	Unit Model	Included Water Separator
Pipe Size	Inlet Flow Rate (SCFM)*	A	B	C	D	E	F	Weight (Lbs)	# of Cartridges	Unit Model	Included Water Separator
1"	45	25.79	14.96	12.2	2.99	1.97	23.62	101.4	2	PD0046	A30050WS
1"	55	28.94	14.96	12.2	2.99	1.97	27.56	112.4	2	PD0056	A30070WS
1"	75	35.63	14.96	12.2	2.99	1.97	33.46	136.6	2	PD0075	A30125WS
1"	90	40.55	14.96	12.2	2.99	1.97	39.37	154.3	2	PD0090	A30175WS
1"	110	49.61	14.96	12.2	2.99	1.97	27.56	187.3	4	PD0110	A30175WS
1"	150	62.8	14.96	12.2	2.99	1.97	33.46	231.4	4	PD0150	A30175WS
1"	180	72.64	14.96	12.2	2.99	1.97	39.37	269	4	PD0180	A30175WS
1.5"	220	49.61	14.96	19.29	2.99	2.44	27.56	339.5	8	PD0220	A30280WS
1.5"	300	62.83	14.96	19.29	2.99	2.44	33.46	430	8	PD0300	A30400WS
1.5"	360	72.64	14.96	19.29	2.99	2.44	39.37	496	8	PD0360	A30400WS

*Stated flow capacities based on an inlet pressure of 100 psig, inlet temp of 95°F and outlet pressure dewpoint of -40°F.
For capacities at other conditions, please refer to the correction factors.
Flow rates referenced to standard conditions, 68°F at 14.7 psia, and 0% relative water vapor.

Service Kits

Silencer Service Kit: 6,000 Hours

Silencer Kit

Dryer Model	Kit Number
PD0046-PD0090	PD3SK01
PD0110-PD0180	PD3SK02
PD0220-PD0360	PD3SK03

Cartridge Service Kit: 12,000 Hours

Includes desiccant cartridges and associated seals, silencer service kit, and cartridge removal tool.

	Dryer Model	# of Cartridges	Kit Number
Standard Cartridges	PD0046	2	PDSK0046-12000
	PD0056	2	PDSK0056-12000
	PD0075	2	PDSK0075-12000
	PD0090	2	PDSK0090-12000
	PD0110	4	PDSK0110-12000
	PD0150	4	PDSK0150-12000
	PD0180	4	PDSK0180-12000
	PD0220	8	PDSK0220-12000
	PD0300	8	PDSK0300-12000
	PD0360	8	PDSK0360-12000
High Performing Cartridges	PD0046	2	PDSK0046-12000-H
	PD0056	2	PDSK0056-12000-H
	PD0075	2	PDSK0075-12000-H
	PD0090	2	PDSK0090-12000-H
	PD0110	4	PDSK0110-12000-H
	PD0150	4	PDSK0150-12000-H
	PD0180	4	PDSK0180-12000-H
	PD0220	8	PDSK0220-12000-H
	PD0300	8	PDSK0300-12000-H
	PD0360	8	PDSK0360-12000-H

Cartridge Service Kit: 24,000 Hours

Includes desiccant cartridges and associated seals, silencer service kit, valve service kit, and cartridge removal tool.

	Dryer Model	# of Cartridges	Kit Number
Standard Cartridges	PD0046	2	PDSK0046-24000-S24
	PD0056	2	PDSK0056-24000-S24
	PD0075	2	PDSK0075-24000-S24
	PD0090	2	PDSK0090-24000-S24
	PD0110	4	PDSK0110-24000-S24
	PD0150	4	PDSK0150-24000-S24
	PD0180	4	PDSK0180-24000-S24
	PD0220	8	PDSK0220-24000-D24
	PD0300	8	PDSK0300-24000-D24
	PD0360	8	PDSK0360-24000-D24
High Performing Cartridges	PD0046	2	PDSK0046-24000-HS24
	PD0056	2	PDSK0056-24000-HS24
	PD0075	2	PDSK0075-24000-HS24
	PD0090	2	PDSK0090-24000-HS24
	PD0110	4	PDSK0110-24000-HS24
	PD0150	4	PDSK0150-24000-HS24
	PD0180	4	PDSK0180-24000-HS24
	PD0220	8	PDSK0220-24000-HD24
	PD0300	8	PDSK0300-24000-HD24
	PD0360	8	PDSK0360-24000-HD24

Desiccant Dryers

Begin Here: Sizing Walker Filteration Desiccant Dryers

Correction Factors

Example

PROSFD - Low Flow Desiccant Dryers

Specifications

Features

0.01 Micron Pre-Filter

Supplied as standard

LED Controller

Supplied as standard

1 Micron Dust Filter

Integrated into desiccant cartridge

PD004 to PD035 - Technical Specs

Flow Rates 4 SCFM to 35 SCFM

Service Kits

Kit A: 6,000 Hours

Kit B: 12,000 Hours

Kit C: 24,000 Hours

PRODRY - Large Flow Desiccant Dryers

Specifications

Features

Unique Purge Plug

Select orifice size to suit changing pressure requirements

Tower Pressure Gauges

Clearly visible diagnostics for accurate pressure readings

Optional DMC Controller

Advanced dewpoint management & energy savings

PD0046 to PD0360 - Technical Specs

Flow Rates 46 SCFM to 360 SCFM

Service Kits

Silencer Service Kit: 6,000 Hours

Cartridge Service Kit: 12,000 Hours

Cartridge Service Kit: 24,000 Hours

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Customer Service

30 Days to Change

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Desiccant Dryers

Begin Here: Sizing Walker Filteration Desiccant Dryers

Correction Factors

Example

PROSFD - Low Flow Desiccant Dryers

Specifications

Features

0.01 Micron Pre-Filter

Supplied as standard

LED Controller

Supplied as standard

1 Micron Dust Filter

Integrated into desiccant cartridge

PD004 to PD035 - Technical Specs

Flow Rates 4 SCFM to 35 SCFM

Service Kits

Kit A: 6,000 Hours

Kit B: 12,000 Hours

Kit C: 24,000 Hours

PRODRY - Large Flow Desiccant Dryers

Specifications

Features

Unique Purge Plug

Select orifice size to suit changing pressure requirements

Tower Pressure Gauges

Clearly visible diagnostics for accurate pressure readings

Optional DMC Controller

Advanced dewpoint management & energy savings

PD0046 to PD0360 - Technical Specs

Flow Rates 46 SCFM to 360 SCFM

Service Kits

Silencer Service Kit: 6,000 Hours

Cartridge Service Kit: 12,000 Hours

Cartridge Service Kit: 24,000 Hours

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100% Secured

Customer Service

30 Days to Change

Highest Quality