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Steel 4-Bolt Flange Adapter, Inch Code 61 Flange, O-Ring Half To Inch Female NPT, Straight

Description & Features

Products

Model Number	Includes	Pipe Size	Pad Size	A	B	C	D	E	F	G	H	K
W4-20-20 Steel Code 61 To Female NPT Adapter	None	1.25	1.25	2.875	3.125	1.188	2.313	0.94	0.69	1.672	1.25 in	0.469
W4-24-24U Steel Code 61 To Female NPT Adapter	Mounting bolts, lock washers and Buna-N O-Ring	1.5	1.5	3.25	3.688	1.406	2.75	1.19	0.75	1.922	1.5 in	0.531
W4-32-32U Steel Code 61 To Female NPT Adapter	Mounting bolts, lock washers and Buna-N O-Ring	2	2	3.813	4	1.688	3.063	1.38	0.875	2.406	2 in	0.531

Product Questions & Answers (1)

Question by: Hank C on Mar 3, 2026, 2:14 PM

Will this flange adapter hold up okay in a hydraulic power unit?

Answer by: Customer Support on Mar 5, 2026, 12:40 PM

For hydraulic power units requiring a transition from a Code 61 O-ring flange to an inch female NPT thread, this steel adapter should do the trick, yeah. Just make sure your pressure requirements fall within the Code 61 standards.