|
US4521156A
|
|
Self-priming pump system having diaphragm-type flow sensor
|
|
US4421325A
|
|
Seal with dual metallic rings having contacting lips
|
|
US4493607A
|
|
Tee-type valve for self-priming pump system
|
|
US4515180A
|
|
Valve for self-priming pump system
|
|
US4494560A
|
|
Self-priming system for liquid pumps
|
|
US4532958A
|
|
Check valve having replaceable valve assembly
|
|
US3482299A
|
|
Manufacture of plate fin tube modules
|
|
US3481274A
|
|
Differential pressure sensitive valve system for self-priming liquid-type pumps
|
|
US3487519A
|
|
Method of making axial flow fans
|
|
DE1653723A1
|
|
Self-priming liquid horizontal pump
|
|
US3438433A
|
|
Plate fins
|
|
US3381618A
|
|
Self-priming system for horizontal pumps
|
|
US3451417A
|
|
Combination of relief pressure mechanism and valve
|
|
US3425436A
|
|
Valve structure for self-priming pumps
|
|
US3394590A
|
|
Hydraulic system and liquid level sensing mechanism therefor
|
|
GB1130347A
|
|
Self priming liquid pumping system
|
|
US3211102A
|
|
Self priming pump and automatic primer valve therefor
|
|
CA845976A
|
|
Self-priming system for horizontal pumps
|
|
CA817084A
|
|
Self priming liquid pumping system and primer valve
|
