Electrical Connectors 7020, 7039, 7144 Series

Product Overview

The Automatic Valve Electrical Connectors provide the standardized electrical mating interface between the plant wiring system and the solenoid coils installed on Automatic Valve 7020, 7039, and 7144 Series directional control valves. The solenoid coil and its mating electrical connector together form the complete electrical actuation interface for the valve, and having the correct, correctly rated connector is as important as specifying the correct coil voltage and power rating for reliable, long-term valve performance.

The Series connectors conform to DIN 43650 Form B and Form C standards, which are the dominant solenoid valve electrical connector standards in North American and global industrial pneumatic applications. DIN 43650 connectors are designed to engage the coil's mating plastic connector body with a positive locking mechanism, providing a secure, vibration-resistant electrical connection that resists accidental disconnection in high-cycle valve applications.

Seven variants are available in the series, covering a range of connection styles and installation configurations: connectors without cord for field wiring termination with strain relief, connectors with pre-attached cord for drop-in installation, and conduit entry versions for installations requiring cord or cable entry through conduit fittings. This range allows the system designer and machine builder to select the connector format that best matches the wiring method, panel construction style, and maintenance access requirements of each installation.

A product catalog is available at automaticvalve.com/series/221-electrical-connectors for download, providing dimensional drawings, connection diagrams, and compatibility information across all seven variants. For design engineers specifying complete solenoid valve wiring systems, the series connectors should be specified alongside the solenoid coils to ensure full electrical interface compatibility and maintain the original CE and ATEX certifications of the valve assembly.

Key Engineering Features

• DIN 43650 Form B and C Compliance - Conforms to the DIN 43650 solenoid valve connector standard in Form B and Form C configurations, ensuring dimensional and electrical compatibility with the mating coil connector body on 7020, 7039, and 7144 Series solenoid coils.
• 7 Available Variants - Covers both cord and without-cord options, strain relief configurations, and conduit entry styles to match the full range of field wiring methods used in industrial panel and machine installations.
• With Cord and Without Cord Options - Without-cord models accept field wiring directly at the connector terminal block with strain relief for custom cable lengths. With-cord models include a pre-attached cable for drop-in installation in standard wiring configurations.
• Strain Relief and Conduit Options - Strain relief models provide mechanical protection for the cable exit from the connector body. Conduit entry models accept standard conduit fittings for installations requiring cable routing through conduit systems.
• Secure Locking Engagement - DIN 43650 connector design features a positive mechanical locking mechanism that resists accidental disconnection in vibration-prone industrial environments.
• Positive Connector Keying - Connector body geometry and the DIN standard ensure correct orientation engagement with the coil connector, preventing reverse-polarity wiring errors.
• Product Catalog Available - A product catalog with dimensional drawings, connection diagrams, and full model specifications is available for download at automaticvalve.com/series/221-electrical-connectors.
• Compatible with CE and ATEX Certified Coils - When used with the corresponding CE or ATEX certified solenoid coils, the series connectors maintain the integrity of the valve electrical interface for regulatory compliance documentation.

Technical Specifications

General Specifications

Electrical Connection Options

Certifications & Compliance

Typical Applications & Industries

Industrial Automation and Machine Building

• Automated assembly and handling machines with multiple solenoid valves requiring field-wired DIN 43650 connectors matched to each coil's connection body for a clean, standardized wiring installation.
• PLC-controlled pneumatic valve banks where the connector style is standardized across the machine to simplify maintenance and reduce spare parts stocking requirements.
• Conveyor and material handling systems with valve arrays where pre-wired cord connectors enable rapid valve replacement during maintenance without re-terminating field wiring.

Packaging Equipment

• High-speed packaging machines where DIN 43650 connectors provide a secure, vibration-resistant electrical connection to solenoid valves that cycle hundreds of times per hour.
• Packaging line changeover scenarios where disconnecting and reconnecting valve connectors is part of the tooling change procedure, and the connector locking mechanism ensures reliable re-engagement after each changeover.
• Flexible packaging machinery where pre-wired cord connectors allow valve replacement in the field by plant maintenance personnel without electrical expertise.

Automotive and Metal Fabrication

• Welding cell and press line control panels where conduit-entry DIN connectors are required to route solenoid valve wiring through rigid conduit per facility electrical standards.
• Paint booth valve installations where sealed connector versions protect the solenoid coil electrical connection from paint mist, humidity, and cleaning chemical exposure.
• Assembly fixture valve wiring where standardized DIN connector types allow maintenance teams to replace valves and connectors with stock items common to all fixtures on the line.

Food and Beverage Processing

• Washdown-rated valve installations in food processing environments where the connector sealing capability protects the solenoid coil electrical interface from high-pressure water spray during sanitation cycles.
• Food-grade valve manifolds where field-wiring DIN connectors allow the solenoid valve electrical connections to be disconnected and reconnected during CIP (clean-in-place) or maintenance cycles.

Process Control and Oil and Gas

• Instrument panel solenoid pilot valve wiring in process control facilities where DIN connectors provide a secure, maintainable electrical interface for valve coil connections in panel-mounted valve arrays.
• NAMUR-interface pilot valve installations on pneumatic actuators in process plants where the electrical connector is exposed to outdoor weather, vibration, and temperature cycling.

Maintenance, Repair, and Commissioning

• Plant MRO stocking programs where a supply of the most common DIN connector models is maintained on-site to support rapid valve connector replacement when connectors are damaged or fail.
• Machine commissioning activities where pre-wired cord connectors speed up the wiring phase by eliminating individual wire termination at each valve station.
• Emergency repair situations where having matching connector models available on-site reduces the time to restore a failed valve to service.

Ordering and Model Number Configuration

Use the filter on the Automatic Valve website by Electrical Connection type and Cord Interface to identify the correct connector model for your installation.

Verify that the selected connector model is compatible with the specific solenoid coil model (7020, 7039, or 7144 Series) installed on the valve. DIN Form B and Form C connectors are NOT interchangeable.

For installations requiring specific cable length, select a without-cord model and field-wire the connector to the required length using appropriately rated cable.

A product catalog with full technical specifications and dimensional drawings is available at automaticvalve.com/series/221-electrical-connectors.

Contact Automatic Valve at (248) 474-6761 for application-specific connector selection assistance.

Electrical Connector Model Selection

Accessories

Product Catalog

A product catalog is available for download at automaticvalve.com/series/221-electrical-connectors with full technical data, dimensional drawings, and connection diagrams for all 7 variants.

Related Products & Accessories

• Solenoid Coils (7019 & 7144 Series) -  replacement solenoid coils for 7019 and 7144 Series valves, designed to mate with Series connectors. https://www.automaticvalve.com/series/222-solenoid-coils
• Manifolds (Valve Manifolds) -  multi-station sub-base manifolds for mounting directional control valves. https://www.automaticvalve.com/series/227-manifolds
• Silencers (Exhaust Mufflers, Exhaust Restricters) -  exhaust silencers for noise reduction on pneumatic directional control valve exhaust ports. https://www.automaticvalve.com/series/226-silencers
• Blocking Disks (Port Isolation) -  blocking disks for sealing unused manifold station ports. https://www.automaticvalve.com/series/2604-blocking-disks

Frequently Asked Questions (FAQ)

Q: What is a DIN 43650 electrical connector?

A: DIN 43650 is the international standard for solenoid valve electrical connectors, specifying the mechanical and dimensional characteristics of the connector body that mates to the coil's built-in connector interface. Form B and Form C refer to different body sizes and pin configurations within the DIN 43650 standard. Most solenoid valves with DIN-style electrical connections use Form B (the most common size) or Form A, while Form C is used for smaller coil connectors.

Q: What is the difference between DIN 43650 Form B and Form C?

A: Form B and Form C differ in the physical size of the connector body and the pin spacing. Form B is the standard large-body DIN connector used on most medium-to-large solenoid valves. Form C is a smaller connector used on miniature solenoid valves and coils. The two forms are not interchangeable. Verify which form is required for the installed coil before ordering.

Q: What is the difference between with-cord and without-cord connector models?

A: Without-cord models have an open terminal block inside the connector body where field wiring is terminated by the installer. These allow custom cable lengths. With-cord models include a factory-attached cable of specified length, which connects to the control panel or PLC output terminal without additional wire termination. With-cord connectors reduce installation time but offer less flexibility in cable length.

Q: What is the difference between strain relief and conduit entry models?

A: Strain relief models include a cable grip or clamp at the cable exit from the connector body that prevents tensile force on the cable from pulling on the internal wire terminations. Conduit entry models replace the strain relief with a threaded fitting designed to accept a conduit nut or compression fitting for installations where the solenoid valve wiring runs through conduit.

Q: Which connector model matches the 7020 Series solenoid coil?

A: Models 7020-001 (without cord, strain relief) and 7020-006 (with cord) are designed for the 7020 Series coil interface. Use the filter on the Automatic Valve website to confirm the correct model for your specific installation configuration.

Q: Which connector model matches the 7144 Series coil?

A: Models 7144-001 (without cord) and 7144-003 (with cord) are designed for the 7144 Series coil connector interface. Refer to the product catalog at automaticvalve.com/series/221-electrical-connectors for dimensional and connection details.

Q: Can I use a Form B connector on a Form C coil?

A: No. Form B and Form C connectors have different physical dimensions and cannot be interchanged. Installing the wrong form connector may result in a connection that does not engage properly or does not provide the specified electrical contact and sealing performance.

Q: What IP (ingress protection) rating do the connectors carry?

A: Refer to the product catalog for the IP rating of each connector model. Standard DIN 43650 connectors are commonly available in IP65 and IP67 ratings. Confirm the IP rating required for the specific installation environment before selecting a model.

Q: Can I replace just the connector without replacing the entire valve assembly?

A: Yes. The DIN 43650 connector is a separate, replaceable accessory. If the connector is physically damaged, cracked, or has a broken locking tab, it can be replaced without removing or replacing the valve or coil.

Q: Are the connectors suitable for use with LED indicator lights?

A: Some DIN 43650 connectors are available with integral LED indicator lights that illuminate when the solenoid coil is energized, providing visual indication of valve state. Check the series product catalog to see if LED versions are available in the required model.

Q: What wire gauge can I terminate in a without-cord DIN connector?

A: Refer to the product catalog for the terminal block wire gauge capacity of each without-cord model. Standard industrial DIN connectors typically accept 18 to 22 AWG wire. Do not exceed the rated conductor size, as over-sized wire cannot be fully clamped and may create a poor electrical connection.

Q: Where can I download the product catalog for the series?

A: The product catalog for the series Electrical Connectors is available at automaticvalve.com/series/221-electrical-connectors. Contact Automatic Valve at (248) 474-6761 for additional technical support.

Installation & Maintenance Guidelines

• Isolate electrical power to the solenoid control circuit before removing or installing any electrical connector on a solenoid valve.
• Verify that the connector model is compatible with the specific solenoid coil installed on the valve (Form B vs Form C, and the specific coil series).
• For without-cord models, strip and terminate field wiring to the connector terminal block following the connection diagram in the product catalog. Do not over-tighten terminal screws.
• Route field wiring to leave adequate service loop at the connector to allow connector removal for maintenance without pulling on panel wiring.
• Engage the connector onto the coil connector body until the locking mechanism audibly clicks or snaps into the locked position. An incompletely locked connector can cause intermittent solenoid operation.
• For conduit entry models, install the conduit fitting into the connector entry port and torque to the fitting manufacturer specification to maintain the IP rating of the connector.
• After wiring and connector engagement, verify solenoid operation by energizing the control circuit and confirming the valve shifts correctly. Use the valve's manual override if available to verify mechanical operation before energizing.
• Inspect connectors periodically for cracks, damaged locking tabs, corrosion at pin contacts, and cable damage at the entry point. Replace damaged connectors immediately.
• In washdown environments, verify that the connector IP rating is appropriate for the wash spray pressure and frequency. Replace connectors that show evidence of moisture ingress into the connector body.
• Keep replacement connectors for installed valve types in the MRO parts stock to minimize valve downtime from connector failures.

Warranty & Global Support

Automatic Valve products are backed by a one-year warranty covering defects in material and workmanship from the date of purchase.

Technical support is available through Automatic Valve at (248) 474-6761 or through the contact form at automaticvalve.com.

Automatic Valve is a member of the ROSS Controls global family, with support resources available through ROSS Global offices worldwide.

For matching solenoid coils, complete valve assemblies, and other accessories, visit automaticvalve.com or contact your authorized Automatic Valve distributor.

Download Catalog: https://www.automaticvalve.com/documents/868/Accessories_AV-ACCS_EN.pdf