Description
Numerous drums and IBC Tote lids feature a buttress thread opening, yet the challenge lies in the fact that this specific “buttress” thread doesn’t align with most standard pumps. The 2″ x 2″ Buttress to NPT Adapter solves this issue.
You can differentiate between NPT and Buttress threads based on their visual characteristics. Buttress threads appear more coarse with lines spaced farther apart, often termed as “coarse threads.” In contrast, NPT threads have lines much closer together, commonly described as “fine threads.”

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