This heavy-duty ignition electrode adapter provides a secure

the brass construction and SAE J513 compliance make this 3/8 flare x 3/8 MPT brass adapter compatible with modern A2L refrigerant systems and standard mineral or synthetic oils

The rugged Heyco-style design allows for a snap-in installation

04-lb mission-critical part for commercial fire damper maintenance

Interchangeable Design: Full functional equivalence between 310137 and 310137/U ensures ease of sourcing for critical repairs

Johnson Controls DMPR-RS311 Fusible Link This heavy-duty ignition electrode adapterAs a direct replacement for the legacy DMPR RS201, the Johnson Controls DMPR RS311 is a critical fire safety component engineered specifically for FD 1300 Series dynamic multi blade fire dampers. This 165 degree fusible link is designed to provide thermal triggered closure in high velocity HVAC systems, ensuring compliance with UL 555 and NFPA 90A standards. The DMPR RS311 functions as a mechanical release; once ambient temperatures reach 165F (74C),