LAWRENCE M DULAC
Plumbers in Belmont, NH
License number
Massachusetts 24544
Issued Date
Jul 19, 1996
Expiration Date
May 1, 2016
Type
Journeyman Plumber
Address
Address
Belmont, NH 03220
Professional information
Pressure Relief Valve With Reverse Threaded Inlet
US Patent:
2011016, Jul 14, 2011
Filed:
Mar 23, 2011
Appl. No.:
13/069955
Inventors:
Lawrence M. Dulac - Belmont NH, US
Assignee:
Larco LLC - Belmont NH
International Classification:
F16K 17/38, F16K 51/00, F16K 17/04
US Classification:
137468, 251148, 137535
Abstract:
A safety discharge system comprises a pressure relief valve having an inlet, designed to mate with an outlet of a heating appliance, and a relief outlet, wherein at least the inlet of the pressure relief valve and the outlet of the heating appliance include a threaded region, and wherein the threaded region is threaded with a reverse or left handed thread.