Direct Acting Solenoid Valves K02 Series

Actual product may differ from above image. Product details should be verified before purchase.

Single 3/2 with spring return
1/8” & 1/4” port options
AC & DC solenoid coil options
Weather-Proof options are IP65 rated
Explosion-Proof options are CSA & FM approved and ATEX Compliant

Product Overview

The Automatic Valve K02 Series is a family of compact, direct-acting solenoid valves built on long-life poppet construction for precise pneumatic switching in applications where space, reliability, and electrical options matter. Available in 2/2 normally closed, 2/2 normally open, 3/2 normally closed, and 3/2 normally open configurations, these valves offer 1/8" and 1/4" NPT port sizes and cover an operating pressure range from full vacuum to 150 psig (1030 kPa). The single direct solenoid design with spring return delivers fast, repeatable actuation without the need for an external pilot supply.

K02 Series valves are engineered for base-mount installation and are offered in standard, weather-proof, and explosion-proof builds to meet the widest possible range of industrial and hazardous-area requirements. The weather-proof variants carry NEMA 4X and IP65 ratings, while explosion-proof models are CSA and FM approved and ATEX compliant, covering Class I Division 1 Groups A, B, C, and D and Class II Groups E, F, and G hazardous locations.

For OEM builders and panel designers, the K02 platform supports manifold assembly directly from individual valve stations using a single screw and O-ring per station with no additional hardware. Bar stock aluminum and 303 or 316 stainless steel body options extend the series into corrosive environment applications. A push non-locking manual override is standard on all models, simplifying commissioning and field troubleshooting without additional tools.

Key Engineering Features

Long-Life Poppet Construction - Eliminates the sliding seals and close tolerances of spool valves. The poppet face-seal design delivers positive shutoff and high contamination tolerance cycle after cycle.
Direct Acting Operation - No minimum inlet pressure required for basic actuation. The valve shifts from full vacuum to 150 psig without requiring an external pilot supply, simplifying circuit design.
2/2 and 3/2 Functions - Available in normally closed and normally open variants for both 2-way and 3-way applications, covering single-acting cylinder control, flow isolation, and pressure switching circuits.
1/8" and 1/4" NPT Port Options - Two port sizes accommodate a wide range of small-bore pneumatic circuits and compact machine designs, with both sizes rated to vacuum and 150 psig.
AC and DC Solenoid Coil Options - Coils available in 12 VDC, 24 VDC, 110/120 VAC, and 220/240 VAC to match any control system voltage. All coils are rated for continuous duty.
Weather-Proof IP65 / NEMA 4X - Weather-proof models use a hermetically sealed, integrally molded coil assembly rated NEMA 4X and IP65, suitable for washdown and outdoor environments without additional enclosures.
Explosion-Proof CSA, FM, and ATEX - Factory Mutual and CSA certified (Class I Div. 1 Groups A-D; Class II Groups E-G; Class III) and ATEX compliant for hazardous area installations where ignition prevention is mandatory.
Manifold-Compatible Design - Individual K02 valves bolt together into multi-station manifold assemblies using a single screw per joint, with no additional manifold housing required for standard 1/8" port configurations.
Stainless Steel Body Options - Bar stock 303 and 316 stainless steel body configurations are available for corrosive environments where standard aluminum would degrade.
Push Non-Locking Manual Override - Standard on all models for manual actuation during system commissioning, maintenance, and troubleshooting without electrical power.
Corrosion-Resistant Internals - Poppet and internal components are manufactured from corrosion-resistant materials. Fluoroelastomer (FPM/FKM) seal option is available for chemical resistance requirements.

Technical Specifications

General Specifications

Parameter	Specification
Valve Series	K02
Valve Functions	3/2 Normally Closed, 3/2 Normally Open, 2/2 Normally Closed, 2/2 Normally Open
Construction	Poppet (direct acting)
Actuation	Single direct solenoid with spring return
Port Sizes	M5, 1/8" NPT, 1/4" NPT
Port Thread	NPT (standard); M5 (base mount, sub-base dependent)
Body Type	Base Mount (valve less base); Sub-Base mount; Manifold mount
Operating Pressure	Vacuum to 150 psig (100 to 1030 kPa)
Flow Capacity	0.1 Cv (100 l/min) at all port sizes
Flow Media	Air or inert gas, filtered (50-micron recommended)
Manual Override	Push non-locking (standard); Extended turn-locking (option 2)
Seal Material	Buna-N (NBR, standard); Fluoroelastomer FPM/FKM (Option A)
Body Material	Aluminum (standard); 303 Stainless Steel (Option S, bar stock); 316 Stainless Steel (Option SS, bar stock)
Filtration	50-micron filtration recommended; lubrication not required but may extend service life

Temperature Ratings

Temperature ratings apply to both ambient and media conditions. High-temperature coil options (CT and T) extend the ambient limit to 82C (180F).

Configuration	Ambient Temperature	Media Temperature
Standard (Buna-N or FPM seals)	18 to 50 C (0 to 123 F)	18 to 50 C (0 to 123 F)
High Temp Coil Option CT or T (Buna-N or FPM seals)	18 to 82 C (0 to 180 F)	18 to 82 C (0 to 180 F)

Important: For media temperatures below 4 C (40 F), compressed air must be free of water vapor to prevent ice formation inside the valve.

Electrical Data (Solenoid Pilot Valves)

All solenoid coils are rated for 100% continuous duty. Power values are nominal at rated voltage. Voltage tolerance is +/-10% of nominal.

Voltage	Power Consumption
12 VDC	4.8 W (NEMA 4) / 4.5 W (NEMA 7, 9)
24 VDC	4.8 W (NEMA 4) / 4.5 W (NEMA 7, 9)
110/120 VAC, 50/60 Hz	6.9 VA (NEMA 4) / 6.5 VA (NEMA 7, 9)
220/240 VAC, 50/60 Hz	6.4 - 6.8 VA
125 VDC	5.9 W

Electrical Connection Options

Connection Type	Coil Code
DIN 43650 Form B (Weather-Proof, NEMA 4X)	X
18" Flying Leads (Weather-Proof, NEMA 4X)	G
1/2" Conduit with 30" Leads (Weather-Proof, NEMA 4X)	C
1/2" Conduit with 30" Leads (High Temp to 82 C, NEMA 4X)	CT
1/2" Conduit with 24" Leads (Explosion-Proof, CSA and FM, NEMA 4/4X/7C/7D/9)	Y
3m Cable and Strain Relief (ATEX Explosion-Proof)	Z

Flow Performance Data

Flow performance for K02 Series valves at all port sizes. Cv is consistent across 1/8" and 1/4" port sizes due to the direct-acting poppet design.

Port Size	Function	Cv	Flow (l/min)	Operating Pressure
M5	3/2 and 2/2 NC/NO	0.1	100	Vacuum to 150 psig
1/8" NPT	3/2 and 2/2 NC/NO	0.1	100	Vacuum to 150 psig
1/4" NPT	3/2 and 2/2 NC/NO	0.1	100	Vacuum to 150 psig

Certifications & Compliance

Certification/Standard	Detail
CSA Approval	Certified to CSA C22.2 and UL STD 429 for explosion-proof environments (Class I Division 1 Groups A, B, C, D; Class II Groups E, F, G; Class III; T4 Ta=-20 to +60 C; NEMA 4, 4X, 7C, 7D, 9).
Factory Mutual (FM) Approval	Factory Mutual approved for explosion-proof installations in Class I Division 1 hazardous locations.
ATEX Compliance	ATEX explosion-proof coil option available. Certifications include Ex m II T5 PTB 03 ATEX 2018 X; Ex II 2 G EEx m II T5; Ex II 2 D IP65 T95 C.
CE Marking	Meets CE requirements for EMF and Low Voltage Directives for industrial use in the European Union.
IP65 Enclosure	Weather-proof models are dust-tight and protected against low-pressure water jets, rated NEMA 4X and IP65.
Intrinsic Safety	Intrinsically-safe versions available for Class I Groups A-D; Class II Groups E-G; Class III Div. 1 T5, 24 VDC only. Consult factory.

Typical Applications & Industries

Packaging and Converting Machinery

Vacuum cup on/off control for label applicators, pick-and-place systems, and blister packaging lines where compact valve size and fast response are critical.
Carton erecting and case sealing equipment requiring precise single-acting cylinder control with 3/2 normally closed valves and spring-return cylinders.
Bag filling and sealing machines using direct solenoid actuation to switch air flow to small bore cylinders and clamps at high cycle rates.
Film and foil tension control with 2/2 valves to apply or release pneumatic braking circuits in response to PLC commands.

Semiconductor and Electronics Manufacturing

Wafer handling systems using vacuum valves to control suction cups and end effectors in clean-room environments where contamination must be minimized.
Printed circuit board assembly automation for pick-and-place heads, test probe actuation, and component insertion mechanisms.
Leak testing and functional test fixtures for electronics assemblies where small-volume, fast-responding valves improve throughput.
SMT process equipment control including solder paste dispensing, component rejection gates, and board clamping mechanisms.

Hazardous Location and Petrochemical Processing

Oil and gas processing equipment in Class I Division 1 environments where explosion-proof CSA/FM-approved solenoid valves are required by code.
Chemical plant instrumentation systems requiring ATEX-certified coils for valve actuation in Zone 1 hazardous areas.
Offshore platform pneumatic control where weather-proof NEMA 4X ratings and corrosion-resistant 316 stainless steel bodies protect against salt air and spray.
Refinery and tank farm applications using explosion-proof K02 valves for instrument air control in defined hazardous zones per NEC Article 500.

Medical Devices and Laboratory Equipment

Fluid dispensing and dosing systems in diagnostics equipment where small-bore, repeatable solenoid valves control liquid and gas flow at low pressures.
Dental and surgical equipment requiring compact, reliable pneumatic valves in space-constrained assemblies.
Laboratory automation and sample handling systems where vacuum to low-pressure air switching is needed with consistent response times.
Sterilization and autoclaving equipment using stainless steel body K02 variants for corrosion resistance in steam-adjacent environments.

Food and Beverage Processing

Filling and dosing systems on production lines where direct-acting solenoid valves provide accurate pulse control of air to pneumatic actuators.
Washdown-rated equipment using NEMA 4X weather-proof K02 valves on packaging lines that require frequent cleaning with pressurized water.
Pneumatic conveying and diverting systems using 3/2 valves to switch product flow between processing lines.
Bottling and capping machinery with tight-space constraints that benefit from the compact base-mount footprint of the K02 platform.

General Industrial Automation and OEM Machine Building

Manifold-mounted valve arrays for multi-axis automation cells where individual K02 stations bolt together without a dedicated manifold body, reducing assembly cost and footprint.
Pilot signal generation for larger directional control valves in pneumatic circuits requiring a small, reliable trigger valve.
Fixture clamping and locating pin actuation on machining centers and assembly fixtures with 3/2 spring-return configurations.
Pneumatic logic circuits requiring on/off switching of air signals in ladder-logic or hardwired pneumatic control systems.

Ordering and Model Number Configuration

The K02 Series uses a structured model number that encodes the valve function, port size, body design, solenoid operator, voltage, and installation options. Base model numbers reference the valve body only; coils and electrical connections are specified separately or as a combined configuration string.

K02 Series Model Number Structure:

K02 - Series

0 - Body Type (0 = Valve Less Base; 2 = Inline or Manifold Mount; 3 = 1/4" port sub-base)

2 - Port Size (0 = M5/No Port; 2 = 1/8"; 3 = 1/4")

J - Function (G = 3 Way NC, H = 3 Way NO, J = 2 Way NC, K = 2 Way NO)

A - Operator (A = Single Direct Solenoid)

X - Coil Type (X = Weather-Proof DIN 43650 Form B; Z = Explosion-Proof CSA/FM)

R - Return Type (R = Spring Return)

DB - Voltage Code (-AA = 110/120 VAC; -AB = 220/240 VAC; -DA = 12 VDC; -DB = 24 VDC)

Example: K0222JAXR-DB = K02 Series, 1/8" port, 2/2 NC, weather-proof DIN Form B, spring return, 24 VDC

Example: K0223GAXR-AAY = K02 Series, 1/4" port, 3/2 NC, explosion-proof CSA/FM, spring return, 120 VAC

Voltage codes: -AA = 110/50 or 120/60 Hz (also 125 VDC for Y explosion-proof coil); -AB = 220/50 or 240/60 Hz; -DA = 12 VDC or 24/50 or 24/60 Hz; -DB = 24 VDC.

Coil type suffix: X = Weather-Proof DIN 43650 Form B NEMA 4X; G = Weather-Proof 18" Flying Leads NEMA 4X; C = Weather-Proof 1/2" Conduit with 30" Leads; CT = Same as C but rated to 82 C ambient; Y = Explosion-Proof 1/2" Conduit CSA and FM; Z = Explosion-Proof ATEX 3m Cable.

Options appended after voltage code: A = Fluoroelastomer (FPM/FKM) seals; O = Exhaust nut; S = 303 Stainless Steel body (bar stock only); SS = 316 Stainless Steel body (bar stock only); 2 = Extended turn-locking override; 4 = No override.

For the simple sub-base models, short model numbers K02-004 through K02-007 reference standard catalog configurations without electrical options; coil suffix required for complete ordering.

Standard K02 Base Model Reference

Model	Function	Port Size	Cv
K02-004	3/2 NC	1/8" NPT	0.1
K02-005	3/2 NO	1/8" NPT	0.1
K02-006	2/2 NC	1/8" NPT	0.1
K02-007	2/2 NO	1/8" NPT	0.1

Manifold Base Models

Model	Description	Ports
7116-002	2-Station K02 Manifold	1/8 or 1/4 NPT
7116-004	4-Station K02 Manifold	1/8 or 1/4 NPT
7116-006	6-Station K02 Manifold	1/8 or 1/4 NPT
7116-008	8-Station K02 Manifold	1/8 or 1/4 NPT

Accessories

DIN 43650 Form B Connectors

Prewired and standalone DIN 43650 Form B connectors for the K02 Series standard weather-proof solenoids. Options include cable grip entry for direct wire routing. Compatible connector models: 7020-001, 7020-AA, 7020-DB, 7039-001, 7020-006, 7094-006, 7094-007. Connectors are not polarity dependent.

K02 Manifold Bodies

Individual K02 stations can be assembled directly into multi-station manifolds using a single screw and O-ring per joint. Pre-built bar stock manifold bodies are also available in 2, 4, 6, and 8-station configurations with common supply and individual cylinder ports.

Stations	Model (NPT)	Weight kg (lb)
2	7116-002	0.12 (0.26)
4	7116-004	0.20 (0.44)
6	7116-006	0.28 (0.62)
8	7116-008	0.36 (0.80)

Frequently Asked Questions (FAQ)

Q: What is the minimum inlet pressure required to operate a K02 valve?

A: The K02 Series is direct acting, meaning it does not require a minimum inlet pressure for actuation. The valve operates from full vacuum up to 150 psig (1030 kPa) on the inlet port. No external pilot supply is needed.

Q: What flow rate does the K02 Series deliver?

A: All K02 Series variants are rated at 0.1 Cv (100 l/min) regardless of port size (M5, 1/8", or 1/4"). This flow level is optimized for small-bore cylinder control, pilot signal generation, and compact automation circuits.

Q: Are K02 valves available in explosion-proof configurations?

A: Yes. Explosion-proof coil options are available with CSA and FM approval for Class I Division 1 Groups A, B, C, and D; Class II Groups E, F, and G; and Class III environments. ATEX explosion-proof versions are also available for European and international hazardous area compliance.

Q: What is the difference between the X, Y, and Z coil type codes?

A: The X suffix indicates a Weather-Proof DIN 43650 Form B coil rated NEMA 4X. The Y suffix specifies an Explosion-Proof coil with 1/2" conduit entry approved by CSA and FM (NEMA 4/4X/7C/7D/9). The Z suffix specifies an ATEX explosion-proof coil with 3m cable and strain relief.

Q: Can K02 valves be assembled into multi-station manifolds?

A: Yes. Individual K02 valve stations bolt directly together using a single screw and O-ring per joint without requiring a dedicated manifold body. Pre-built 2, 4, 6, and 8-station bar stock manifold assemblies are also available. This simplifies wiring and air supply routing in multi-circuit machines.

Q: What seal materials are available and when should I choose FPM/FKM?

A: Standard K02 valves use Buna-N (NBR) seals, which perform well with clean compressed air in the standard temperature range. Option A specifies Fluoroelastomer (FPM/FKM) seals, which should be selected when the valve is exposed to petroleum oils, solvents, or elevated temperatures up to 82 C (180 F) with the high-temperature coil option.

Q: Are stainless steel body K02 valves available?

A: Yes. Bar stock body configurations are available in 303 stainless steel (Option S) and 316 stainless steel (Option SS) for applications in corrosive environments including chemical processing, marine, and food-grade installations.

Q: What voltages are available for K02 solenoid coils?

A: K02 coils are available in 12 VDC (-DA), 24 VDC (-DB), 110/120 VAC 50/60 Hz (-AA), and 220/240 VAC 50/60 Hz (-AB). All coils are rated for 100% continuous duty. A 125 VDC option is also available with select explosion-proof coil configurations.

Q: What manual override options are available?

A: The standard override is a push non-locking button. An extended turn-locking override (Option 2) can be specified when a lockable actuation position is needed during maintenance. Option 4 eliminates the override entirely for tamper-resistant or cleanroom installations.

Q: Is lubrication required for K02 valves?

A: Air line lubrication is not required for K02 valves but is recommended to maximize service life. If used, specify a petroleum-based lubricant with an aniline range between 82 C (180 F) and 99 C (210 F) and an ISO 32 viscosity or lighter, compatible with the seal material specified.

Q: Can I use K02 valves for vacuum applications?

A: Yes. The K02 Series is rated from full vacuum on the inlet port, making it suitable for vacuum cup control, vacuum hold-down systems, and other applications where the inlet is below atmospheric pressure. The direct-acting poppet design maintains sealing integrity at sub-atmospheric pressures.

Q: What is the estimated lead time for K02 Series valves?

A: Standard manufacturing lead times for quantities of 10 or fewer units are approximately 3 to 4 weeks, with shipping available throughout the United States. Contact Automatic Valve for volume pricing and expedited delivery options.

Installation & Maintenance Guidelines

Mount K02 base-mount valves on a flat, clean sub-base or manifold surface. Verify O-ring condition and seat contact before fastening.
Supply filtered air at 50 microns or better. The poppet design tolerates contamination better than spool valves, but clean air supply extends service life significantly.
Verify inlet pressure does not exceed 150 psig (1030 kPa). The K02 is rated vacuum to 150 psig; operation above 150 psig risks internal damage.
For manifold assemblies, torque mounting screws uniformly to avoid distortion of the valve body and O-ring sealing surfaces.
Connect electrical wiring per NEC and local electrical codes. For DIN 43650 Form B connections, ensure the cable clamp is tightened to the specified torque to maintain the NEMA 4X/IP65 rating.
For explosion-proof installations, verify that conduit entries are sealed per NEC Article 500 requirements. All conduit runs must be sealed within 18 inches of explosion-proof enclosures.
Do not restrict exhaust ports. Back pressure on the exhaust side of poppet valves can prevent full valve shifting or cause erratic operation.
When operating at temperatures below 4 C (40 F), supply air must be dried to a dew point below the minimum operating temperature to prevent ice formation.
If oil lubrication is used, ensure it is petroleum-based with an aniline range between 82 C and 99 C (180 F to 210 F). Phosphate-ester or synthetic lubricants may degrade Buna-N seals.
For stainless steel body configurations (Options S and SS), verify that all mating fasteners and sub-base components are also corrosion resistant to prevent galvanic corrosion.

Warranty & Global Support

Automatic Valve, a member of the ROSS Controls global family, provides product support and technical assistance for K02 Series valve selection, configuration, and troubleshooting.

For product configuration assistance, technical data, and dimensional drawings, visit automaticvalve.com or contact Automatic Valve at (248) 474-6761.

Automatic Valve is headquartered in Livonia, Michigan. ROSS Controls global support is available through offices in the USA, Canada, Brazil, Germany, France, United Kingdom, India, China, and Japan.

Individual product technical data sheets are available for download on the series page at automaticvalve.com. Catalog documentation is also available through authorized Automatic Valve distributors.

Download Catalog: https://www.automaticvalve.com/documents/420/Direct_Acting_Solenoid_Valves_AV-K_en.pdf