Weil McLain 383-500-020 Inspection Glass Kit 005" orifice (red) which delivers

005" orifice (red) which delivers 25 SCIM at 20 psig

preventing nuisance trips while maintaining strict adherence to combustion safety standards

or air-gas mixtures when installed in the appropriate Maxitrol regulator

protecting the heat exchanger and improving end-user comfort

preventing pressure switch tripping and ensuring safe exhaust gas expulsion during the ignition sequence

Weil McLain 383-500-020 Inspection Glass Kit 005" orifice (red) which deliversFor high efficiency boiler maintenance, the Weil McLain 383 500 020 Inspection Glass Kit is the essential OEM solution for monitoring combustion and flame quality in Ultra Series 1 and 2 boilers. This complete assembly is critical for identifying potential burner issues or soot buildup without compromising the sealed combustion environment. As a professional grade boiler sight glass replacement, it includes the high temperature borosilicate glass, a