iDP Valves
101 Series
10mm, 2-Port Manifold iDP Valve

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Introduction

The iDP 101 Series Valve is a miniature, diaphragm-separated, 2-port valve designed for precise control and reliable performance in micro-dosing applications. At just 10 millimeters in width, this valve is ideal for controlling aggressive media, including fluids and chemical reagents, used in medical technology and analytical fields. Applications range from microfluidics to DNA analysis and various biological sampling (blood, urine, and tissue). Its simple design ensures long-lasting, trouble-free operation for millions of cycles.

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Features

• Inert Wetted Materials for broad compatibility:
  • Radel® body
  • FKM or EPDM elastomers
• Low Internal Volume:
  • 30 μL actuated
  • 3.6 μL unactuated (under seat)
• Fluid Pressure: Up to 30 PSI [2.06 bar]
• Flow Rates:
  • 550 mL/min [water]
  • 20 SLPM [air]
• Compact Subbase Mount for easy system integration.
• Tight Footprint: Allows for multiple valves in a small space.
• Electrical Entry: 12 or 24VDC lead wire plug-in electrical entry.
• Ideal for Micro-Dosing engineered solutions.

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Here is the specification table for the iDP 300 Series in both Inline and Manifold configurations:

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SPECIFICATIONS

Specification	IDP 300 Inline	IDP 300 Manifold
Type of Operation	Direct Solenoid, Media Separated	Direct Solenoid, Media Separated
Number of Positions	2	2
Function	Normally Closed	Normally Closed
Media	Aggressive Liquids and Gases	Aggressive Liquids and Gases
Wetted Parts (Body & Diaphragm-Poppet)	PEEK, Viton®GF or EPDM	PEEK, Viton®GF or EPDM
Pressure Range	Vacuum to 40 PSI (2.76 bar)	Vacuum to 40 PSI (2.76 bar)
Piping Type	Inline, Direct Piping	Manifold Mount, Sub-base Piping
Water Flow @ 40 PSI (TYP)	1.45 SLPM	1.83 SLPM
Air Flow @ 40 PSI (TYP)	50 SLPM	62 SLPM
Fluid Temperature	-20°C to 95°C	-20°C to 95°C
Ambient Temperature	-20°C to 65°C	-20°C to 65°C
Cycles/Min	300	300
Response Time @ 40 PSI (TYP)	25 msec	25 msec
Port Size	1/16”, 3/32” or 1/8”	--
Electrical Entry	Plug-In or Lead Wires	Plug-In or Lead Wires
Voltages	12VDC, 24VDC	12VDC, 24VDC
Voltage Tolerance	±10%	±10%
Power Consumption (Watts)	3.5	3.5
Weight	0.22 lbs	0.27 lbs

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300 SERIES 2-WAY INTERNAL VOLUMES

Body Size	Unactuated Under Poppet	Actuated
1/16” Barb Body	0.007 in³	0.013 in³
3/32” Barb Body	0.007 in³	0.014 in³
1/8” Barb Body	0.009 in³	0.017 in³
Manifold	0.004 in³	0.012 in³

 

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Media Compatibility

• Concentrated Nitric Acid
• Sodium Hydroxide
• Ethylene Diamine
• Ethylene Glycol
• Renaline®
• Formaldehyde
• Biological Solutions
• Sodium Hypochlorite
• Dialysate
• Hydrogen Peroxide
• Bleach/Lye

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Applications & Markets

The iDP 101 Series Valve is designed for precise control in a wide variety of applications, including:

• Microfluidics
• DNA analysis
• Blood, Urine, and Tissue Sampling
• Medical Technology
• Analytical Systems
• Chemical Processing

This valve is particularly well-suited for applications in the healthcare, biotechnology, and laboratory industries, where precise media control and reliability are critical.

iDP Valves
300 Series, 2-Port
Inert Diaphragm-Poppet Valve

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Introduction

Humphrey’s 300 Series iDP 2-way inline and manifold valves are designed for precise control of aggressive media in harsh environments. Featuring a compact design, the 300 series offers a flexing diaphragm-poppet that isolates the solenoid from the media, ensuring long-term performance and reliability. Ideal for applications where space is limited, this valve provides robust performance, making it suitable for demanding chemical and industrial applications.

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Features

• Inert Wetted Materials for broad chemical compatibility:
  • Body/Fitting Elements: PEEK (Polyetheretherketone)
  • Diaphragm-Poppet/Seals: Viton®-GF or EPDM
• Max Pressure: 40 PSI [2.76 bar] standard
• Flow Rates:
  • Barb Valve @ 40 PSI:
    • 50 SLPM air
    • 1.45 SLPM water
  • Manifold Valve @ 40 PSI:
    • 62 SLPM air
    • 1.83 SLPM water
• Coil Encapsulation: Protects the valve from corrosive external fluid exposure.
• Port Types and Mounting Options: Offers design flexibility with various configurations.
• Tested Durability: Capable of withstanding more than 20 million cycles.
• Available in 3-Port Inline Barb Valve Option.

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Specification	IDP 300 Inline	IDP 300 Manifold
Type of Operation	Direct Solenoid, Media Separated	Direct Solenoid, Media Separated
Number of Positions	2	2
Function	Normally Closed	Normally Closed
Media	Aggressive Liquids and Gases	Aggressive Liquids and Gases
Wetted Parts	PEEK, Viton®GF or EPDM	PEEK, Viton®GF or EPDM
Pressure Range	Vacuum to 40 PSI (2.76 bar)	Vacuum to 40 PSI (2.76 bar)
Piping Type	Inline, Direct Piping	Manifold Mount, Sub-base Piping
Water Flow @ 40 PSI (TYP)	1.45 SLPM	1.83 SLPM
Air Flow @ 40 PSI (TYP)	50 SLPM	62 SLPM
Fluid Temperature	-20°C to 95°C	-20°C to 95°C
Ambient Temperature	-20°C to 65°C	-20°C to 65°C
Cycles/Min	300	300
Response Time @ 40 PSI	25 msec	25 msec
Port Size	1/16”, 3/32” or 1/8”	--
Electrical Entry	Plug-In or Lead Wires	Plug-In or Lead Wires
Voltages	12VDC, 24VDC	12VDC, 24VDC
Voltage Tolerance	±10%	±10%
Power Consumption	3.5 Watts	3.5 Watts
Weight	0.22 lbs	0.27 lbs

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Internal Volumes

• Unactuated Under Poppet:
  • 1/16” Barb Body: 0.007 in³
  • 3/32” Barb Body: 0.007 in³
  • 1/8” Barb Body: 0.009 in³
  • Manifold: 0.004 in³
• Actuated:
  • 1/16” Barb Body: 0.013 in³
  • 3/32” Barb Body: 0.014 in³
  • 1/8” Barb Body: 0.017 in³
  • Manifold: 0.012 in³

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Media Compatibility

• Citric Acid
• Formaldehyde
• Biological Solutions
• Sodium Hypochlorite
• Dextrose/Sugars
• Dialysate
• Hydrogen Peroxide
• Acetic Acid
• Bleach/Lye
• Most aggressive medias

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Applications & Markets

The iDP 300 Series valve is designed for a range of applications including:

• Kidney Dialysis
• Analytical Chemistry
• Diagnostic Systems
• Agent Detection
• Environmental Monitoring
• Food and Beverage Processing
• Gaseous Flow Control
• Water Purification
• Clinical Diagnostics

This valve offers an ideal solution for applications that require precise control in harsh environments, especially in the medical, chemical, and industrial sectors.

iDP Valves – 2-Port 350/351 Series
Inert Diaphragm-Poppet Valve

Introducing the Humphrey 350/351 series iDP valves, engineered for controlling aggressive liquids and gases in harsh environments. The diaphragm-poppet design isolates the solenoid from media penetration, while the inert body materials ensure long-lasting performance and chemical resistance.

Features:

• Elastomers Available: EPDM, VitonTMGF, or FFKM for multi-level chemical protection.
• Inert Wetted Materials: Broad chemical compatibility for a range of harsh chemicals.
• Pressure Range:
  • Standard: 0-40 PSI (2.76 bar)
  • Optional: 28”Hg - 40 PSI
  • Consult factory for higher pressure requirements.
• Flow Rates @ 40 PSI:
  • 220 SLPM (air)
  • 5.3 SLPM (water)
• Diaphragm-Poppet Isolation: Ensures flow path is isolated from solenoid.
• Continuous-Duty Coil: Encapsulated coil suitable for wet environments.
• Temperature Tolerance: Up to 203°F (95°C) for fluid temperatures.
• Durable Design: Ensures long service life with 100% factory testing.
• Porting and Mounting Flexibility: Offers design adaptability.

Specifications Table:

Specification	IDP 350	IDP 351
Type of Operation	Direct Solenoid, Media Separated	Direct Solenoid, Media Separated
Function	2-Way, Normally Closed	2-Way, Normally Closed
Media	Aggressive Liquids (Gases)	Aggressive Liquids (Gases)
Wetted Parts	Radel® and FFKM, VitonTMGF or EPDM	Radel® and FFKM, VitonTMGF or EPDM
Pressure Range	Standard: 0-40 PSI (2.76 bar); Optional: VAC 28”Hg - 40 PSI	Standard: 0-40 PSI (2.76 bar); Optional: VAC 28”Hg - 40 PSI
Piping Type	Inline, Direct Piping, Manifold Mount	Inline, Direct Piping, Manifold Mount
Internal Volume (Barb Body)	Unactuated Under Poppet: 0.026in³; Actuated: 0.062in³	Unactuated Under Poppet: 0.004in³; Actuated: 0.037in³
Water Flow @ 40 PSI	5.3 SLPM	5.3 SLPM
Air Flow @ 40 PSI	220 SLPM	220 SLPM
Fluid Temperature Range	EPDM: -20°C to 95°C; FKM, FFKM: 0-95°C	EPDM: -20°C to 95°C; FKM, FFKM: 0-95°C
Ambient Temperature Range	EPDM: -20°C to 65°C; FKM, FFKM: 0-65°C	EPDM: -20°C to 65°C; FKM, FFKM: 0-65°C
Cycles/Minute	300	300
Response Time @ 40 PSI	16 ms	16 ms
Port Size	5/16” Barb; 8mm	5/16” Barb; 8mm
Electrical Entry	Spade Terminals or Lead Wires	Spade Terminals or Lead Wires
Voltage	24VDC	24VDC
Voltage Tolerance	±10%	±10%
Power Consumption (Watts)	8.3	8.3
Weight	0.38 lbs	0.39 lbs

Media Compatibility:

• Concentrated Nitric Acid
• Sodium Hydroxide
• Ethylene Diamine
• Ethylene Glycol
• Renaline®
• Acetic/Citric Acids
• Formaldehyde
• Biological Solutions
• Sodium Hypochlorite
• Dextrose/Sugars
• Dialysate
• Hydrogen Peroxide
• Bleach/Lye
• Most other media (consult factory for compatibility).

Applications & Markets:

• Kidney Dialysis
• Analytical Chemistry
• Diagnostic Systems
• Agent Detection
• Environmental Monitoring
• Food and Beverage
• Gaseous Flow Control
• Water Purification
• Clinical Equipment Waste Systems

iDP Valves – 3-Port 370/371 Series
Inert Diaphragm-Poppet Valve

Introducing the Humphrey 370/371 series iDP valves, engineered to control aggressive liquids and gases in harsh environments. These 3-way inert solenoid valves utilize a flexing diaphragm-poppet design, isolating the solenoid from media penetration. The inert body materials ensure long-lasting performance and chemical resistance. The 370/371 series can be used as either a selector valve or diverter valve. In selector applications, the rated pressure is up to 30 PSI.

Features:

• Elastomers Available: EPDM, Viton®GF, or FFKM, providing multi-level chemical protection.
• Inert Wetted Materials: Broad chemical compatibility for harsh chemicals.
• Max Pressure: 40 PSI (2.76 bar) standard.
• Flow Rates @ 40 PSI:
  • 220 SLPM (air)
  • 5.3 SLPM (water)
• Diaphragm-Poppet Isolation: Isolates the flow path from the solenoid.
• Continuous-Duty Coil: Encapsulated coil designed for wet environments.
• Temperature Resistance: Suitable for high fluid temperatures – up to 203°F (95°C).
• Durable Design: Ensures long service life with 100% factory testing.
• Flexible Design: Offers various porting and mounting options for system adaptability.

Specifications Table:

Specification	IDP 370	IDP 371
Type of Operation	Direct Solenoid, Media Separated	Direct Solenoid, Media Separated
Function	3-Way, Normally Closed	3-Way, Normally Closed
Media	Aggressive Liquids (Gases)	Aggressive Liquids (Gases)
Wetted Parts	Radel® and FFKM, Viton®GF or EPDM	Radel® and FFKM, Viton®GF or EPDM
Pressure Range	0-40 PSI (2.76 bar); Consult factory for higher pressure or vacuum applications	0-40 PSI (2.76 bar); Consult factory for higher pressure or vacuum applications
Piping Type	Inline, Direct Piping, Manifold Mount	Inline, Direct Piping, Manifold Mount
Internal Volume (Barb Body)	Unactuated Under Poppet: 0.026in³; Actuated: 0.062in³	Unactuated Under Poppet: 0.004in³; Actuated: 0.037in³
Water Flow @ 40 PSI	5.3 SLPM	5.3 SLPM
Air Flow @ 40 PSI	220 SLPM	220 SLPM
Fluid Temperature Range	EPDM: -20°C to 95°C; FKM, FFKM: 0-95°C	EPDM: -20°C to 95°C; FKM, FFKM: 0-95°C
Ambient Temperature Range	EPDM: -20°C to 65°C; FKM: -10°C to 65°C; FFKM: 10-65°C	EPDM: -20°C to 65°C; FKM: -10°C to 65°C; FFKM: 10-65°C
Cycles/Minute	300	300
Response Time @ 40 PSI	20 ms	20 ms
Port Size	5/16” Barb; 8mm	5/16” Barb; 8mm
Electrical Entry	Spade Terminals or Lead Wires	Spade Terminals or Lead Wires
Voltage	24VDC	24VDC
Voltage Tolerance	±10%	±10%
Power Consumption (Watts)	8.3	8.3
Weight	0.40 lbs	0.42 lbs

Media Compatibility:

• Citric Acid
• Formaldehyde
• Biological Solutions
• Sodium Hypochlorite
• Dextrose/Sugars
• Dialysate
• Hydrogen Peroxide
• Acetic Acid
• Bleach/Lye
• Most aggressive medias (consult factory for compatibility).

Applications & Markets:

• Kidney Dialysis
• Analytical Chemistry
• Diagnostic Systems
• Agent Detection
• Environmental Monitoring
• Food and Beverage
• Gaseous Flow Control
• Water Purification
• Clinical Equipment Waste Systems 

MiDP Valves – 2-Port S390/S391 Stepper Operated
Inert Diaphragm Poppet Proportional Valves

Introducing the Humphrey MiDP Series Proportional Valves, designed to provide precise control of flow for a wide range of aggressive liquids and gases. These valves utilize the Humphrey 350 Series diaphragm-isolated design, a proven and reliable technology in the medical industry (20+ years of service), including applications such as kidney dialysis and endoscope reprocessing. The flow path is safely isolated from the media, ensuring high-performance control through a stepper motor operator. This motor delivers exceptional repeatability, precise positioning, and low hysteresis.

Features:

• Proven Reliability: Diaphragm-separated body construction from the Humphrey 350 Series iDP Valves.
• Inert Wetted Flow Path: Made of a Radel® body with diaphragm materials available in FFKM, EPDM, or VitonTMGF, ensuring broad chemical and temperature compatibility.
• Precise Flow Control: Extremely repeatable flow control with a typical deviation of less than 2% of full scale.
• Low Hysteresis: Hysteresis measured at less than 2%, making open-loop control applications feasible.
• Cavitation Resistant: Not susceptible to cavitation or water hammer (in liquids).
• Efficient Positioning: Low or zero holding current when positioned.
• Long Life: Designed for durability with a cycle life exceeding 1 million cycles.
• Custom Configurations: Available on request for tailored performance (consult factory).
• Flexible Mounting Options: Inline/direct piping and manifold/subbase mount bodies.

Specifications Table:

Specification	MiDP S390, MiDP S391
Type of Operation	Stepper Motor, Media Isolated
Media	Aggressive Liquid or Gas
Pressure Range	0 - 60 PSI (0 - 4.1 bar)
Typical Hysteresis	< 2%
Typical Flow Range (0.150” Orifice)	0-8.5 SLPM (Water) / 0-325 SLPM (Air) @ 60 PSI
Typical Flow Adjustment per Step @ 40 PSI (0.150” Orifice)	Air: 5.3 SLPM
Cv (0.150” Orifice)	0.31
Ambient Temperature	0 - 50°C
Fluid Temperature	0 - 95°C
Cycle Time (Open to Close or Close to Open)	2 seconds
Cycle Life	> 1 million cycles
Step Response Time	< 40 milliseconds
Repeatability	< 2% of full scale
Stroke (in)	0 - 0.024
Position Resolution (in)	0.0004 / Step
Wetted Materials	Radel®, EPDM, VitonTMGF, FFKM
Power Consumption (Watts)	2.6 MAX
Current / Phase	600 mA standard; Consult factory for other options
Driver (Customer Supplied)	Chopper or Linear Driver Required

Media Compatibility:

• Citric Acid
• Formaldehyde
• Biological Solutions
• Sodium Hypochlorite
• Dextrose/Sugars
• Dialysate
• Hydrogen Peroxide
• Acetic Acid
• Bleach/Lye
• Most aggressive medias (consult factory for compatibility).

Applications & Markets:

• Kidney Dialysis
• Diagnostic Systems
• Environmental Monitoring
• Food and Beverage
• Gaseous Flow Control
• Water Purification
• Clinical Equipment Waste Systems
• Ratio Control of Mixing Multiple Liquids
• Dosing Additives for Process Control