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the 138-18-021-04 is specifically calibrated for the RPC series
Key Benefits for Technicians: Precise Pressure Regulation: Factory-calibrated to 4" WC for stable Natural Gas combustion
this 2-stage gas valve ensures optimal combustion efficiency and stable thermal output across varying load conditions
making it ideal for exposed outdoor locations
Resideo DP2030D5002 Contactor 320788-702 the 138-18-021-04 is specifically calibratedThe Resideo DP2030D5002 is a heavy duty, electromagnetically operated 2 pole definite purpose contactor designed specifically for demanding HVACR applications, including induction motors, compressor circuits, and resistance heating loads. Engineered to meet the industrial ARI 780 standard, this unit features Silver Cadmium Oxide contacts that ensure superior conductivity and durability through intense duty cycles. This 30 Amp contactor operates with a
