|
US3173439A
|
|
Backflow prevention device
|
|
US3034544A
|
|
Hydrant valve
|
|
US2836207A
|
|
Aviation fueling hydrant valve
|
|
US2845947A
|
|
Pilot valve
|
|
US2683580A
|
|
Pilot controlled multiple diaphragm valve
|
|
US2619110A
|
|
Pilot controlled gate and by-pass valve
|
|
US2590007A
|
|
Liquid proportioning and spraying apparatus
|
|
US2649773A
|
|
Differential pressure operated valve
|
|
US2545774A
|
|
Rotary fluid motor and valve means for controlling the same
|
|
US2564529A
|
|
Pilot valve
|
|
US2609099A
|
|
Liquid separation apparatus
|
|
US2646816A
|
|
Backflow prevention device
|
|
US2410876A
|
|
Pilot controlled pressure regulating means
|
|
US2377227A
|
|
Pressure responsive valve
|
|
US1903108A
|
|
Liquid displacement gas compressor
|
|
CA732426A
|
|
Backflow prevention device
|
|
CA417326A
|
|
Water softening apparatus
|
|
CA429767A
|
|
Fluid distribution and control apparatus
|
|
CA429768A
|
|
Liquid level control apparatus
|
|
CA429766A
|
|
Valve
|
