The ASCO™ Series 408 Manual Reset Solenoid Valves offer reliable no-voltage release functionality, ideal for safe manual reset operations across various settings. With a durable brass body, these valves accommodate air, inert gases, light oil, and water, featuring versatile NPTF port sizes from 1/4" to 1". The 4-way, 4/2 function supports flow rates from .04 to 5.19 Kv and operates with AC and DC voltages up to 240. Suitable for both indoor and outdoor environments, these valves meet the needs of hazardous applications such as refining and bottling.

Key features and benefits of the ASCO™ Series 408 Manual Reset Solenoid Valves

Key Features

These valves incorporate a manual reset mechanism that requires both energisation and manual operation to latch. The no-voltage release function ensures the valve trips when de-energised, enhancing safety in critical applications.

Key Features

Constructed with a brass body and stainless steel internal components, the Series 408 valves are compatible with various media, including air, inert gases, light oil, and water. This versatility makes them suitable for diverse industrial applications.

Key Features

Designed to function effectively in both indoor and outdoor environments, these valves support a broad spectrum of voltages (24 AC, 110 AC, 6 DC, 12 DC, 24 DC, 48 DC, 120 DC, 240 AC, 120 AC) and operate within a differential pressure range from vacuum to 500 PSIG.


Valve Actuation:	Manual Reset
Body Material:	Brass
Media:	Air, Inert Gas, Light Oil, Water
Pipe / Port Size:	1/4 "; 1/2 "; 3/8 "; 3/4 "; 1 "
Port Type:	NPTF
Function:	4 way - 4/2
Flow:	From .04 to .2 Kv, From .2 to .43 Kv, From .43 to .86 Kv, From .86 to 1.73 Kv, From 1.73 to 5.19 Kv
Voltage:	24 AC, 110 AC, 6 DC, 12 DC, 24 DC, 48 DC, 120 DC, 240 AC, 120 AC
Operating Environment:	Indoor, Outdoor, Hazardous

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The ASCO Series 408 is a no-voltage release, manual reset solenoid valve designed to control the flow of air, inert gases, light oil, and water. Once tripped, it requires manual resetting to resume automatic operation.

These valves are suitable for applications such as refining and bottling, where manual reset functionality is essential for safety and control.

The valves feature a brass body with stainless steel internal components, ensuring durability and compatibility with various media.

The valves are available in NPTF port sizes of 1/4", 3/8", 1/2", 3/4", and 1", accommodating different piping requirements.

The flow capacity ranges from 0.04 to 5.19 Kv, depending on the specific valve model and size.

The valves support various voltages, including 24 AC, 110 AC, 6 DC, 12 DC, 24 DC, 48 DC, 120 DC, and 240 AC, providing flexibility for different electrical systems.

Yes, these valves are suitable for indoor, outdoor, and hazardous environments, meeting standards such as ATEX Zone 0-20 and Class I Div 1.

Once the valve is tripped, it must be manually reset to return to automatic operation, ensuring controlled and safe system restarts.

The valves can operate with a maximum differential pressure ranging from vacuum to 500 PSIG, depending on the specific model.

Regular inspection and maintenance are recommended to ensure optimal performance, including checking for wear and ensuring the manual reset mechanism functions correctly.

These valves comply with various standards, including ATEX Zone 0-20, Class I Div 1, Class I Div 2, CSA, and IEC Ex Zone 0-20, ensuring suitability for a wide range of applications.

Please feel free to request information and advice using the form below or call us on 0151 547 1221

ASCO™ Series 408 Manual Reset Solenoid Valves