NV-SW Nozzle with Cap, Work Area, Vehicle Paint Booth - 552175
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The Pyro-Chem 552175 NV-SW Nozzle is the work area protection nozzle for the Pyro-Chem Monarch Industrial Dry Chemical Fire Suppression System used in vehicle paint spray booths and automotive finishing facilities. It ships with a nozzle cap installed to prevent debris and overspray buildup in the orifice during standby operation, which is especially important in paint spray environments where dry chemical nozzles can become contaminated during normal painting operations. The cap blows off on system actuation.
The Monarch system uses a modular protection approach where each nozzle type (NV-SW for the work area, NF-ABC for total flooding, and specialized nozzles for plenums and ducts) covers a prescribed area of the booth per pre-engineered placement parameters tested to UL 1254. Nozzle selection, positioning, and aiming are determined by a certified Pyro-Chem Monarch distributor based on the booth dimensions, layout, and the system design manual. The system as a whole uses ABC dry chemical agent and is governed by NFPA 17 and NFPA 33, with operating temperatures of 32 to 120 degrees F.
Nozzle Placement and Cap
Precise nozzle placement is critical to the Monarch system's UL 1254 listing. Each NV-SW nozzle must be positioned and aimed exactly as specified in the system design for the specific booth layout. The pre-installed cap must be confirmed present and undamaged at each semiannual service inspection and replaced after any actuation. A cap that has been contaminated by overspray should be replaced promptly during service.
| Feature | Details |
|---|---|
| Manufacturer | Pyro-Chem (Johnson Controls) |
| Part Number | 552175 |
| Nozzle Designation | NV-SW (Work Area) |
| Application | Work Area of Vehicle Paint Spray Booths and Automotive Finishing Facilities |
| Agent Type | ABC Dry Chemical |
| Cap Included | Yes (Pre-Installed, Blow-Off Type) |
| Operating Temperature Range | 32°F to 120°F (0°C to 49°C) |
| System | Pyro-Chem Monarch Industrial Dry Chemical Fire Suppression System |
| Governing Standards | NFPA 17 (Dry Chemical), NFPA 33 (Spray Application) |
| Certifications | UL Listed (UL 1254) |
| Companion Nozzle | NF-ABC Total Flooding Nozzle P/N 551678 |
The Monarch system is a pre-engineered dry chemical system designed and installed by certified Pyro-Chem Monarch distributors per NFPA 17 and NFPA 33.
- Certified Installer Required: Nozzle placement, spacing, and aiming for each booth configuration must follow the Monarch design manual and be performed by a certified Pyro-Chem Monarch distributor. Incorrect placement voids the UL 1254 listing.
- Cap Inspection: Confirm the nozzle cap is present, clean, and undamaged at each semiannual service visit. In high-overspray environments, caps may accumulate paint or debris and require more frequent inspection.
- Semiannual Service: All nozzle positions, aiming, and cap condition are verified at the required semiannual service interval per NFPA 17 and the Monarch service manual.
What areas of the spray booth does the NV-SW nozzle protect?
The NV-SW is the work area nozzle, meaning it protects the main spraying area of the booth where paint application takes place and where flammable solvent vapors are most concentrated. The Monarch system uses additional nozzle types for the plenum/filter section, the duct, and total flooding of the overall booth volume. A complete booth installation uses multiple nozzle types together to protect all sections of the booth per the system design.
Can I reuse the cap after a system activation?
No. After any system actuation, all nozzle caps must be replaced as part of the post-discharge reset. The certified Monarch distributor replaces all caps along with the other reset steps before returning the system to service.
