Hoffman Specialty 405102 Valve 319847-401 Applying the included silicone is

Applying the included silicone is a critical step in the installation process to ensure heat is efficiently transferred from the board's power components to the heatsink

it includes the regulator spring and hardware but not a complete replacement valve

75-inch orifice and 43 Cv rating minimize pressure drop in high-volume HVACR and industrial piping

Chemical Resistance: Engineered to hold up against synthetic oils and common refrigerants like R717 (Ammonia) and HCFC/HFC blends

Key Benefits Pressure Isolation: Protects internal scanner optics from fluctuating windbox and furnace pressures

Hoffman Specialty 405102 Valve 319847-401 Applying the included silicone isThe Hoffman Specialty 405102 is a professional grade 3 4" angle radiator supply valve designed for precision flow control in commercial and residential HVAC systems. Engineered as the direct replacement for 0036003, this Model 185C valve features a heavy duty brass and bronze construction to withstand demanding environments. As a veteran preferred steam radiator valve, it utilizes a non rising stem and packless construction, ensuring leak free