VALVES FOR DESICCANT DRYERS

摘要

A series of valves are disclosed which are specially designed for use in desiccant dryers. Each of the valves utilizes a housing (12), fabricated of standard pipe components and communicating flanges (13, 14) in conjunction with a poppet (24) and seat (20) arrangement. A support (30) fixed to one side of the interior of the housing carries an axial rod ( 23 ) to which the poppets (24) are mounted. Two- and threeway valves include a piston (36) and cylinder arrangement within the support: to actuate the poppets. The poppet (224) of the check valve (200) is actuated automatically in response to pressure differentials across the poppet.