Thermo King Corporation

Darrel J Hokanson

Peter B Allard

David B Ziegler

Robert K Havemann

Steven C Eberly

William B McKenzie

Front cover portion of a microprocessor controller housing

A three-way valve for a refrigeration system having a body portion which includes an intermediate member and first and second end bells. The body portion includes an inlet adapted for connection to a refrigerant compressor, first and second major outlets respectively adapted for connection to a condenser and an evaporator, and a minor outlet adapted for selective connection to the low side of the compressor. The body portion defines a cavity within which a removable cartridge is disposed which contains all movable parts of the valve, as well as all parts subject to wear. The cartridge is freely removable for maintenance purposes after removal of a predetermined one of the end bells. An equalizing check valve is carried by the cartridge which limits back pressure build up via the first major outlet when the valve is positioned to connect the inlet to the second major outlet.

Growing community of inventors

St. Louis Park, MN, United States of America

Darrel J Hokanson