EP 0447851 A3 19920513 - AN IMPROVED THREE-WAY VALVE
Title (en)
AN IMPROVED THREE-WAY VALVE
Publication
Application
Priority
IT 1961590 A 19900308
Abstract (en)
[origin: EP0447851A2] A three-way valve for use with boilers adapted to supply both heating hot water and domestic hot water, comprising an upper portion (20) and a lower portion (30) coupled together through a threaded section (33) and sealing members (35A, 35B) so as to allow for a relative rotation thereof. The upper portion (20) comprises an output duct (4) in communication with a heat exchanger (11), and an axially movable stem (16) carrying at one end thereof a double plug (17) and at the other end an assembly made up by a rigid dividing wall (7) and a flexible diaphragm (6), with a helical spring (19) axially acting on said stem (16), whereas the lower portion (30) comprises a chamber (13) in communication with two output ducts (2, 3) and within which the double plug (17) is movable. The valve can further comprise a combined device performing both the flow control function (in case of lack of water in the plant) and that of automatic bypass in case of excessive loss of pressure in the plant. <IMAGE>
IPC 1-7
IPC 8 full level
F24D 19/10 (2006.01)
CPC (source: EP US)
F24D 19/1066 (2013.01 - EP US)
Citation (search report)
- [Y] GB 1151494 A 19690507 - HORNE ENGINEERING COMPANY LTD [GB]
- [Y] US 3582229 A 19710601 - FELLENBERG JOST EDUARD VON
- [A] US 4615353 A 19861007 - MCKEE JAMES E [US]
- [A] GB 1423119 A 19760128 - RYDBERGS
- [A] DE 2847804 A1 19800207 - SABCO LTD
Designated contracting state (EPC)
ES GB NL
DOCDB simple family (publication)
EP 0447851 A2 19910925; EP 0447851 A3 19920513; IT 1240930 B 19931227; IT 9019615 A0 19900308; IT 9019615 A1 19910908
DOCDB simple family (application)
EP 91102985 A 19910228; IT 1961590 A 19900308