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the McDonnell & Miller 312200 is the official updated part number that replaces the discontinued 311100
the internal diaphragm or electrical contacts have failed
which is the industry standard for maintaining signal strength in low-voltage control circuits
Key Benefits Precise Signal Control: Delivers accurate 135 Ohm resistance for fine-tuned adjustment of Modutrol series motors
It provides local compatibility for 3/4" Sweat and NPT configurations
Sporlan 168186 EBQE Valve Body Els PW 17895 the McDonnell & Miller 312200The Sporlan 168186 EBQE Valve Body is a professional grade, externally equalized expansion valve component engineered for high pressure R410A refrigeration and air conditioning systems. Designed as part of the versatile BQ series, this brass body features 3 8" x 1 2" ODF extended connections that simplify the brazing process for contractors while ensuring a leak proof, metal to metal knife edge joint. The balanced port construction is specifically