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For sump pump applications the THD1020 can be used with any 1.25 in. or 1.5 in. sump pump. The THD1020 features 1.25 in. or 1.5 in. combination rubber adapters and the industry's most durable check valve flapper. This is the world's most reliable sump pump check valve.
Can be used with any 1.25 in. or 1.5 in. discharge sump pump
1.25 in. or 1.5 in. combination adapters
Fits 1.25 in. or 1.5 in. black, galvanized and DWV Sch. 40 pipe
Industries most durable flapper
All stainless steel clamps
Strong, durable ABS body
Millions in service
Compatible with any 1.25 in. or 1.5 in. discharge sump pump