Topp B27003SV-3 23" x 31" 3" Side Vent Poly Basin (w/4" Composite Hub - MTD) Commercial & Industrial__Wastewater__Wastewater Pumps__Solids Handling__Hydromatic__Premium Efficiency__H4QXP Air release valves for water

Air release valves for water systems are also used for proper drainage of the supply and return manifolds

Buna-N Elastomer and Stainless Steel Spring

This Bearing Box is Made of Iron for Models 911M and 911L has Two Bearings Box Support Sizes

Stainless steel shaft eliminates corrosion and fatigue to give longer pump life

Topp B27003SV-3 23" x 31" 3" Side Vent Poly Basin (w/4" Composite Hub - MTD) Commercial & Industrial__Wastewater__Wastewater Pumps__Solids Handling__Hydromatic__Premium Efficiency__H4QXP Air release valves for waterThe Side Vent Sump and Sewage Ejector Basins' unique design has been developed for efficient maintenance, reducing service time dramatically. With the vent pipe remaining intact, gone are the days of cutting then repairing the vent pipe for achieving regular pump maintenance. This approach to the design of this basin easily reduces the time for your service calls by one third. 50% more volume than the industry standard 18" x 30" basin. (65 U. S.