specifically engineered for the 3-inch ACV-9005-03 automatic control valve

this specific part number is engineered for the Ultra Gas Boiler line (specifically Series 1 and 2)

Precision Fit: Features a 2-1/4"-12 Rotalock thread ensuring a seamless match with Copeland scroll compressor ports

Use a multimeter to check for electrical resistance (ohms)

using it with larger series like the AF or smaller TF series is not recommended

Warrick 26MB1A0E06 LWCO Els PW 17895 specifically engineered for the 3-inchThe Warrick 26MB1A0E06 is a professional grade low water cutoff (LWCO) relay designed for precise liquid level control in commercial and industrial boiler applications. Engineered to meet CSD1 requirements, this 120V solid state controller utilizes conductivity probe sensing to protect equipment from dry fire conditions. The 10kOhm sensitivity is factory set to ensure reliable performance across various water qualities, while the 11 pin octal plug in