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Chrome-bevel sheet on grid paper — specs and return notes filed under the bay.
the 138-18-021-04 is specifically calibrated for the RPC series
Durable Construction: High-temperature ceramic/phenolic materials ensure long-term HVAC safety switch reliability under thermal cycling
Key Benefits Verified OEM Compatibility: Purpose-built for the 157-R Series to ensure correct alignment of internal float linkages and bellows assemblies
Advanced Diagnostics: Features a high-visibility LED that flashes specific fault codes
Johnson Controls VG7443LT+72CHGA Valve Assembly THPU32HP7Y the 138-18-021-04 is specifically calibratedThe Johnson Controls VG7443LT+72CHGA is a heavy duty 2 way normally closed valve assembly designed for precision control of hot water, chilled water, and 38 psig saturated steam. Built with a rugged 3 4 inch NPT cast bronze body and stainless steel trim, this globe valve provides a 7. 3 Cv flow coefficient with an equal percentage flow characteristic for superior modulating control. The unit is paired with a VA7820 HGA 2 spring return electric