Solenoid Coils, Connectors, and Exhaust Silencers Catalog

Weather-Proof Solenoid Coils

Weather-proof solenoid coils represent the most commonly specified coil type across all Automatic Valve platforms. The catalog details NEMA 4X rated weather-proof coils for each valve series, providing complete electrical specifications including voltage codes, current draw (inrush and holding), resistance in ohms at 25 degrees Celsius, and power consumption in VA for AC or watts for DC.

For the compact L05 top-mount series, the weather-proof coils (model 7144-9) are available with DIN EN 175301-803 Form C connectors or 18-inch flying leads. AC voltage options include 20/50, 20/60 Hz (code DA), 110/50, 110/60 Hz (code AA), and 220/50, 220/60 Hz (code AB) with power consumption of 2.4 VA. DC options include 12V (code DA), 24V (code DB), and 125V (code AB) at 2.0 watts.

For the larger L07, L21, and L45 inline and top-mount series, weather-proof coils (model 7019-9) use DIN EN 175301-803 Form B connectors, 18-inch flying leads, or 1/2-inch conduit with 30-inch flying leads. AC voltages include 24/50, 24/60 Hz, 120/50, 120/60 Hz, and 230/50, 230/60 Hz at 6.4 to 6.9 VA. DC options include 12V, 24V, and 125V at 4.8 to 5.9 watts. A high-temperature conduit option (model suffix CT) is available for environments up to 82 degrees Celsius.

SAE Valve Weather-Proof Coils

SAE valve platforms use a distinct weather-proof coil model (A7201) with NEMA 4X enclosure rating and 18-inch flying leads. These coils support 120/50, 120/60 Hz AC (code AA) at 6.9 VA, 240/50, 240/60 Hz AC (code AB) at 6.9 VA, 12V DC (code DA) at 4.4 watts, 24V DC (code DB) at 4.4 watts, and 125V DC (code AB) at 4.8 watts. Connectors for SAE valves use 5-pin MINI (model 6095), 4-pin MICRO (model 6095-002), and 5-pin MICRO (model 6095-003) configurations with M12x1 and 1/2-14-NPT connections.

Direct-Operated and Inline Poppet Coils

The K02 series direct-operated valves use the same 7019-9 weather-proof coil platform as the L07/L21/L45 series, while the K03 series uses a higher-power A5983 coil with 1/2-inch conduit and 24-inch flying leads. The K03 coils draw significantly more current, with 0.80A for 12V DC and 0.39A for 24V DC at 9.5 watts, compared to 0.38A and 0.20A respectively for the K02. Inline poppet valves (P06 and P14 series) also use the 7019-9 coil platform with identical electrical characteristics to the L07 series.

Explosion-Proof Solenoid Coils

For hazardous location applications, Automatic Valve offers explosion-proof solenoid coils with comprehensive agency approvals. NEMA-rated explosion-proof coils (model 7019-9**Y) carry CSA and FM approvals for Class I, Division 1, Groups A, B, C, D; Class II, Groups E, F, G; Class III; and Zone 1 Ex m II T4 with a temperature range of -20 to 60 degrees Celsius. The enclosure ratings include NEMA 4, 4X, 7C, 7D, and 9. These coils connect via 1/2-inch conduit with 24-inch leads and weigh approximately 0.20 kg (0.44 lb).

ATEX-certified explosion-proof coils (model 7152-9**) are available with 3-meter cable and strain relief connections. They carry the certifications Ex m II T5 (PTB 03 ATEX 2019 X), Ex II 2 G EEx m II T5, and Ex II 2 D IP65 T95 degrees Celsius. These coils weigh approximately 0.36 kg (0.78 lb). The catalog provides separate electrical data tables for NEMA 4/4X, NEMA 7/9, and ATEX Ex m configurations, showing differences in current draw and resistance values across enclosure types.

For the K03 direct-operated valves, a separate NEMA explosion-proof coil (model A6454) is available with Class I, Division 2, Groups A and B; Class I, Division 1, Groups C and D; and Class II, Division 1, Groups E, F, G ratings. This coil weighs 0.48 kg (1.05 lb) and connects via 1/2-inch conduit with 24-inch leads.

Intrinsically Safe Solenoid Coils

Intrinsically safe solenoid coils are designed for the most hazardous environments where electrical energy must be restricted to levels below those that could cause ignition by sparking or heating. The Automatic Valve intrinsically safe coil (model A7106-374-DB) carries Ex ia classification with approvals for Class I, Groups A, B, C, D; Class II, Groups E, F, G; and Class III, Division 1, T5.

The coil and connector are included with the valve and use a strain relief connection. Operating at 24V DC with a current draw of 0.05A (both inrush and holding), the coil has a resistance of 275 ohms at 25 degrees Celsius and consumes only 1.6 watts. This very low power consumption is fundamental to its intrinsic safety rating.

The catalog includes a basic circuit and application diagram showing the required configuration: a power supply (250V RMS maximum), an approved barrier device, and the intrinsically safe solenoid valve. The barrier must be a Factory Mutual Entity Approved Barrier used in an approved configuration where the maximum voltage exceeds the threshold voltage and the maximum current exceeds the short-circuit current. For CSA compliance, a CSA barrier rated at 28V maximum and 300 ohms minimum is required, connected with CSA-approved cable having a diameter of 6 to 8 millimeters.

DIN Connectors and Connector Pinouts

The catalog provides comprehensive connector options for each valve platform. For the L07, L21, L45, NAMUR, ISO, direct-operated, and inline poppet valve families, connectors use the DIN EN 175301-803 Form B standard. Available configurations include strain relief without cord (model 7020-001), strain relief with light in multiple voltage ranges (models 7020-AA for 100-240V AC / 48-120V DC and 7020-DB for 6-48V AC/DC), molded with 6-foot cord (model 7020-006), 1/2-inch conduit without cord (model 7039-001), and strain relief with light and 6-foot cord (models 7094-006 and 7094-007).

For the compact L05 series, connectors use the DIN EN 175301-803 Form C standard with similar configurations including strain relief without cord (model 7144-001) and light with 6-foot cord options for 120/60V AC (model 7144-002) and 24V DC (model 7144-003).

All connectors are noted as not polarity dependent, simplifying field wiring. The catalog includes clear pinout diagrams for both Form B (2-pin) and Form C (3-pin) connector types, ensuring correct installation and troubleshooting.

Exhaust Silencers in the Accessories Catalog

The final section of the accessories catalog covers exhaust silencers in three categories, providing engineers with noise reduction options that integrate seamlessly with Automatic Valve products.

Aluminum exhaust silencers (84C series) reduce noise while maintaining full-volume airflow with minimum back pressure. Available from 1/8-inch to 1-1/2-inch NPT, they thread directly into exhaust ports with flow ratings from 1,160 l/min (Cv 1.3) to 34,870 l/min (Cv 39.0).

Sintered silencers (84D series) use sintered bronze bonded to a copper-plated male pipe fitting. They feature corrosion resistance and a cleanable 40-micron filter element, available from 10-32 thread to 1-inch NPT with Cv ratings from 0.2 to 4.9.

Exhaust restrictor silencers (266B series) combine noise reduction with adjustable exhaust airflow to control cylinder speeds. They also feature corrosion-resistant construction and a 40-micron cleanable filter element, available from 1/8-inch to 1-inch NPT with Cv ratings from 1.2 to 6.8.

Frequently Asked Questions

What solenoid coil voltages are available for Automatic Valve pneumatic valves?

Automatic Valve solenoid coils are available in multiple AC and DC voltage options. Standard AC voltages include 24V (50/60 Hz), 120V (50/60 Hz), and 230/240V (50/60 Hz). DC options include 12V, 24V, and 125V. Voltage is specified using a two-letter code (e.g., DA for 12V DC, DB for 24V DC, AA for 120V AC, AB for 230/240V AC). Each coil model number includes the voltage code as a suffix.

What hazardous location certifications do Automatic Valve explosion-proof coils carry?

Automatic Valve explosion-proof coils carry CSA and FM approvals for Class I, Division 1, Groups A, B, C, D; Class II, Groups E, F, G; Class III; and Zone 1 Ex m II T4. NEMA enclosure ratings include 4, 4X, 7C, 7D, and 9. ATEX-certified models meet Ex m II T5, Ex II 2 G EEx m II T5, and Ex II 2 D IP65 T95 degrees Celsius. These coils are suitable for a wide range of hazardous environments in oil and gas, chemical processing, and petrochemical facilities.

What type of connector does Automatic Valve use for solenoid coils?

Automatic Valve uses DIN EN 175301-803 connectors as the standard across most valve platforms. Form B connectors are used for the L07, L21, L45, NAMUR, ISO, direct-operated, and inline poppet valve families. Form C connectors are used for the compact L05 series. SAE valves use 5-pin MINI, 4-pin MICRO, and 5-pin MICRO connectors. All DIN connectors are not polarity dependent.

What is the difference between weather-proof, explosion-proof, and intrinsically safe solenoid coils?

Weather-proof coils (NEMA 4X) protect against water, dust, and corrosion in general industrial environments. Explosion-proof coils (NEMA 7, 9, and ATEX) contain any internal spark or explosion within the enclosure to prevent ignition of surrounding hazardous atmospheres. Intrinsically safe coils (Ex ia) restrict electrical energy to levels too low to cause ignition, and must be used with an approved barrier device in the circuit. Each type serves progressively more hazardous environments.

Are Automatic Valve solenoid coils interchangeable across valve series?

Solenoid coils are interchangeable within compatible valve families. The 7019-9 coil platform is shared across L07, L21, L45, NAMUR, ISO, K02 direct-operated, P06, and P14 inline poppet valve series. The compact L05 series uses its own 7144-9 coil. The K03 direct-operated and SAE valve series each use dedicated coil models. Always verify the correct coil model number for your specific valve series before ordering.