F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
F16K 31/12 (2006.01) F16K 1/12 (2006.01) F16K 31/122 (2006.01) F17C 1/02 (2006.01) F17D 1/04 (2006.01)
Patent
CA 2202712
A system for turning off the flow of natural gas into a structure is used where the control is used on the exterior of the structure. The control is operated pneumatically and is connected by an air flow conduit to a valve that is located on a natural gas feed line in the interior of a structure.
National Fuel Gas Distribution Corp.
Sim & Mcburney
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