Patent · US Expired

Valves for desiccant dryers

US4525183A · kind A · utility

26Cited by

25References

15Claims

0Family size

Assignee

Pall Corporation · US

Inventors

Harry Cordes · Largo, US
Thomas Haberer · Darmstadt, DE
Marcel G. Verrando · Cortland, US

Key dates

Filing date	Nov 17, 1983
Grant date	Jun 25, 1985
Priority date	—
Expiry date	Nov 17, 2003

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/7935
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

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 three-way 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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.