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Male Bspt X Female Npt

Adaptall Material Steel	Adaptall Shape Straight	Side 1 Callout R 1-1/4 - 11	Side 1 Gender M	Side 1 Size 1-1/4"	Side 1 Type Bspt	Side 2 Callout 1 - 11.5 NPTF	Side 2 Gender F	Side 2 Size 1"	Side 2 Type Npt	Brand Adaptall America	Brand Adaptall	Pack Size 1.00	UOM EA	Supplier Part Number 9042-20-16	Product Weight 0.09 lbs

Product Questions & Answers 2

Product Questions & Answers

i've got a hose end that’s R 1-1/4 11 BSPT on the outside, will this adapter let me hook into a 1 inch female NPT port?

Question by: Travis S on Mar 7, 2026, 4:05 PM

It bridges those exact thread types and sizes, with a 1-1/4 inch male BSPT (R 1-1/4 - 11) on one side and a 1 inch female NPTF (1 - 11.5) on the other.

Answer by: Customer Support on Mar 9, 2026, 6:52 AM

Got a line running 1-1/4 inch BSPT male out of a component and need to tie into a 1 inch NPT female port. This fitting work for that?

Question by: Glen R on Oct 2, 2025, 6:25 AM

That's what this adapter is built for. One end is 1-1/4 inch male BSPT, threaded at R 1-1/4 - 11, and the other end is 1 inch female NPT at 1 - 11.5 NPTF. Straight configuration, no bends or offsets, so it drops right in between those two connections without any fuss.

Answer by: Customer Support on Oct 3, 2025, 9:57 PM