NF8551B301 FAQs
This valve is designed for precision fluid control in a variety of industrial applications.
Yes, it offers exceptional versatility and can be mounted in any position without affecting its operational efficiency.
This valve can be adapted for both 3/2 NC and 5/2 functions to control double-acting and single-acting actuators, catering to a wide range of application requirements.
No, this valve does not require a minimum operating pressure, providing operational flexibility.
This valve has threaded pipe connections identified as 8 = NPT (ANSI 1.20.3) and G = G (ISO 228/1), making it easy to integrate into existing piping systems.
It is necessary to connect pipes or fittings to the exhaust ports to protect the internal components of the valve and its pneumatic operator when used outside or in harsh environments.
Enclosures with the "Ex db" prefix feature a 1/2" NPT threaded entry hole, while the optional "M20 x 1.5" (prefix "ET") is available without a cable gland.
To meet IEC 61508 (SIL) standards, the valves must be equipped with a specific exhaust protector, ensuring their suitability for functional safety applications.
Yes, this valve is particularly recommended for such sensitive areas and applications, as it allows all exhaust ports to be connectable, providing enhanced environmental protection and ensuring compliance with strict cleanliness and hygiene standards.
NF8551B301 Installation
The installation process for these valves is designed for user convenience and adaptability. Each valve comes with comprehensive installation and maintenance instructions available in multiple languages, ensuring a straightforward setup and long-term upkeep. These solenoid valves offer exceptional versatility, as they can be mounted in any position without affecting their operation. For 3/2 NC-5/2 spool valve configurations, one or two interface plates with NAMUR mating surfaces are supplied, depending on the specific function. When assembling, it's crucial not to connect the pressure supply to exhaust port 3, as this environmentally-protected construction is not suitable for this function. Contacting the manufacturer for information on available functions in specific versions is recommended. Standard components such as dowel pins, bolts, and gaskets are provided for ease of assembly.
Additionally, for applications exposed to challenging conditions like dust or liquids, it is essential to connect pipes or fittings to the exhaust ports to protect the internal components of the spool valve and its pneumatic operator. Threaded pipe connection identifiers are indicated as 8 = NPT (ANSI 1.20.3) and G = G (ISO 228/1), facilitating integration into existing piping systems. Enclosures with the "Ex db" prefix feature a 1/2" NPT threaded entry hole, while the optional "M20 x 1.5" (prefix "ET") is available without a cable gland. To comply with IEC 61508 (SIL) standards, the valves must be equipped with a specific exhaust protector, ensuring their suitability for functional safety applications.
