Description
The ASCO NF8327B001 (often referenced with specific voltage suffixes like 48VDC, 110VDC, or 125VDC) is a rugged, explosion-proof, direct-acting 3/2-way universal solenoid valve from the Series 327 product family. It is engineered for high-flow process valve piloting and rigorous industrial control applications in power plants, refineries, and chemical processing facilities.
Commercial and Logistics Status
| Parameter | Value |
| Condition | Factory Sealed / New Surplus (Verify specific unit availability upon inquiry) |
| Availability | Subject to current inventory status |
| Standard Lead Time | 3 to 5 business days for domestic shipping; international freight times vary |
| Warranty | 12 months standard replacement warranty |
| Pricing Note | Price subject to market conditions; contact us for a firm quote |
Technical Specifications
| Parameter | Value |
| Manufacturer | ASCO (Emerson Automation Solutions) |
| Product Family | Series 327 / Explosion-Proof Line (NF prefix) |
| Catalog / Part Number | NF8327B001 |
| Valve Type | 3/2-Way Universal, Direct-Acting Solenoid Valve (Zero minimum operating pressure required) |
| Pipe / Port Size | 1/4 inch NPT (Female Threaded) |
| Orifice Size | 5.7 mm |
| Flow Coefficient (K_v / C_v) | 0.45 m^3h (0.52 Cv) |
| Operating Pressure Range | 0 to 10 bar (0 to 145 psi) for air, inert gas, water, and light oil |
| Body Material | Brass |
| Seal & Poppet Material | FPM (Fluoroelastomer) with PTFE rider rings for low friction and sticking prevention |
| Coil Class / Power | Class H insulation; typically 11.2 W (DC variants) |
| Enclosure Protection | Ex-d explosion-proof housing / IP66/IP67 |
| Hazardous Area Approvals | ATEX Zone 1-21, IECEx, SIL capable (IEC 61508) |
| Fluid Temperature Range | −20°C to +120°C |
| Weight | Approximately 2.6 kg |
Engineering and Field Integration Notes
When deploying explosion-proof direct-acting valves like the NF8327B001 in hazardous process areas, strict installation and electrical safety rules must be followed.
Integration Guidelines
- Zero Pressure Operation: Because the valve features a balanced poppet direct-acting design, it does not require a minimum pressure differential to operate, making it reliable for venting or low-pressure switching loops.
- Hazardous Location Wiring: Ensure that cable entries, conduit seals, and gland fittings match the explosion-proof (Ex-d) rating of the enclosure (IP66/67) to maintain compliance in ATEX/IECEx zones.
- Media Filtering: Although resilient FPM seals and PTFE rider rings resist wear, installing a fine particulate filter upstream protects internal orifices from pipeline debris, ensuring long-term service life in harsh chemical or power environments.
Frequently Asked Questions
Q: What voltage options are typically supported by the NF8327B001 base model?
A: The base valve design accommodates various interchangeable ASCO operator coils depending on plant architecture, commonly including DC voltages (such as 24VDC, 48VDC, 110VDC, or 125VDC) as well as AC options (such as 230V 50/60Hz). Always verify the specific voltage code stamped on your unit’s coil nameplate.
Q: Can this valve handle media other than clean instrument air?
A: Yes. The standard construction utilizes brass bodies and FPM seals, allowing it to safely cycle inert gases, water, and light mineral oils within its rated pressure and temperature thresholds.
