Weil Mclain 385600099 Boiler Observation Port AssemblyThe Weil Mclain 385600099 Boiler Observation Port Assembly delivers a precise, durable inspection port for gas oil boilers. This official replacement is engineered to fit Weil Mclain systems, providing reliable access for routine monitoring, safe servicing, and easy diagnostics of combustion components. Designed for compatibility with Weil Mclain models 76, 78, 80 and 88, this observation port assembly includes all essential parts: frame, sealing

Connection: Female x male threads

Enclosure: NEMA 3R

you can expect low energy use without compromising performance

5°F operating

delivers precise temperature control for your heating system

Wall-mount design for easy installation and convenient access

7 Inch Length Square Silicone Tubing

making installation straightforward

Raypak 004824F is a premium combination valve built for Nat

Constructed from durable ABS plastic

7 inch WC rating to ensure accurate airflow sensing

it withstands typical furnace vibrations and temperature swings