Ansul DL Nozzle - 443341

The Ansul 443341 DL Nozzle is a discharge nozzle for the ANSUL Piranha kitchen fire suppression system, designed to deliver wet chemical agent in a wide spray pattern. The DL designation indicates this nozzle's specific spray geometry — commonly used over deep fryers and other high-risk cooking appliances where wide, even agent coverage is required to suppress the entire cooking surface area during a system discharge event. Correct nozzle selection and precise aiming are the foundation of UL 300 compliance for any Piranha system installation.

The Piranha system nozzle family includes multiple nozzle types — each engineered for specific appliance types, coverage areas, and mounting positions as defined in the ansul nozzle chart and ansul r-102 nozzle chart documentation for the Piranha platform. The DL nozzle provides the wide spray pattern suited to the hazard geometry of deep fryer cooking surfaces, where agent must be distributed over the entire fryer vat area to achieve complete saponification of the hot cooking oil. Using the wrong nozzle type for a given appliance — even if it appears physically similar — produces a different spray pattern that may leave portions of the hazard area uncovered and fail the UL 300 coverage requirements.

For fire protection contractors installing or servicing ANSUL Piranha systems, the 443341 DL nozzle must be installed and aimed per the piranha system and piranha systems documentation for the specific appliance being protected. Available through authorized ansul distributors. Nozzle caps (see ANSUL nozzle caps products) must be installed over the 443341 at all times except during system discharge — inspect nozzle caps at every semi-annual NFPA 17A and NFPA 96 service visit and replace missing or damaged caps immediately. Document nozzle condition in the fire suppression system inspection record.

Nozzle Placement and Aiming

Install and aim the 443341 DL nozzle per the ansul nozzle chart specifications for the protected appliance type. The nozzle must be positioned at the correct height above the cooking surface and aimed at the correct impact point per the Piranha system design documentation. Use the ANSUL laser pointer adapter (439876) to verify precise nozzle aim before locking the nozzle in position — correct aim is a primary UL 300 compliance requirement for Piranha system installations.

Nozzle Cap Inspection

Verify the nozzle cap is present and undamaged at every semi-annual NFPA 17A and NFPA 96 inspection. A missing nozzle cap allows grease and debris to enter the DL nozzle orifice — potentially blocking agent discharge during a real fire event. Replace missing or damaged caps immediately. After any system discharge, install new nozzle caps on all 443341 nozzles as part of the post-discharge service procedure.

What is the difference between the DL nozzle and the P34 nozzle (442088)?

The DL nozzle (443341) and P34 nozzle (442088) are different Piranha system nozzle types with different spray patterns for different appliance types and coverage requirements. The DL provides a wide spray pattern suited to deep fryer coverage; the P34 provides a different targeted spray geometry for specific appliance configurations. Always select the correct nozzle type per the ansul nozzle chart for the specific appliance being protected — using the wrong nozzle type voids the Piranha system's UL 300 listing for that protection zone.

Can the 443341 be used in the ANSUL R-102 system?

The 443341 DL nozzle is specified for the ANSUL Piranha system. While Piranha and R-102 are both ANSUL wet chemical kitchen suppression platforms, their nozzle families are not fully interchangeable — each system's UL 300 listing is based on specific nozzle types, flow rates, and coverage geometries. Verify compatibility with your specific system using the ansul r-102 nozzle chart or Piranha system documentation, or consult authorized ansul distributors.