Hanging sprinkler RFII

standard response

Overview
The Tyco® Series RFII Standard Coverage Sprinkler is a concealed pendent sprinkler available in quick‑response (3‑mm bulb) and standard‑response (5‑mm bulb) variants. It features a flat cover plate to conceal the sprinkler and a separable two‑piece assembly that permits installation and pressure testing before ceiling finishes are applied. Suitable for architecturally sensitive commercial spaces such as hotel lobbies, offices, churches and restaurants.

Product Family / Key Details

• Orientation: Concealed pendent
• K‑Factor: 5.6
• Temperature Rating: Up to 200°F (≈93°C)
• Response: Quick (3‑mm bulb) and Standard (5‑mm bulb)

Features

• Concealed in an enclosed escutcheon plate with flat cover for aesthetic integration
• Separable, two‑piece design allows system pressure testing prior to ceiling installation
• Listings and approvals: UL and C‑UL Listed; FM, NYC, VdS and LPCB noted

Benefits

• Discreet appearance — cover plates blend with interior finishes
• Reduced accidental activation risk due to concealed design
• Proven reliability — Tyco® products backed by long industry experience

Technical Specifications

• Occupancy Type: Light Hazard, Ordinary Hazard
• K‑Factor: 5.6
• Listings and Approvals: UL and C‑UL Listed; NYC Approved (additional FM, VdS, LPCB noted in features)
• Reference: See Technical Data Sheet TFP181 for full details
• SIN Numbers: TY3531, TY3551
• Thread: 1/2‑inch (≈12.7 mm)
• Wrench: RFII
• Orientation: Concealed pendent
• Temperature Rating: Up to 200°F (≈93°C)
• Response: Quick and Standard (3‑mm bulb quick; 5‑mm bulb standard)