NPT (National Pipe Thread) Adapters | Sealum Industries Ltd. - Manufacturer of Hydraulic Cylinders, Manifolds, Flanges & Fittings

3000 psi Weld & Threaded Adapters

NPT (National Pipe Thread) Adapters

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NPT (National Pipe Thread) Adapters

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National Pipe Thread (NPT) Adapters
Figure 1 Half Coupling	Figure 2 NPT/ORB	Figure 3 SWP/NPT	NPT Size	SWP (OD)	OD1	OD2	OD3	D	L1	L2	L3
1878-04	3349-04-04	N/A	1/4"-18	N/A	0.97	0.88	N/A	N/A	0.88	1.25	N/A
1878-06	3349-06-06	N/A	3/8"-18	N/A	0.97	1.00	N/A	N/A	0.88	1.50	N/A
1878-08	3349-08-08	1809-08-08	1/2"-14	1/2" (0.845)	1.31	1.25	1.35	0.38	0.88	1.50	1.13
1878-12	3349-12-12	1809-12-12	3/4"-14	3/4" (1.055)	1.66	1.50	1.73	0.50	1.13	1.63	1.38
1878-16	3349-16-16	1809-16-16	1"-11.5	1" (1.320)	1.90	1.88	1.97	0.50	1.25	1.75	1.38
1878-20	3349-20-20	1809-20-20	1-1/4"-11.5	1-1/4" (1.670)	2.38	2.25	2.47	0.63	1.38	1.75	1.50
1878-24	3349-24-24	1809-24-24	1-1/2"-11.5	1-1/2" (1.910)	2.88	2.50	2.73	0.75	1.50	1.88	1.63
1878-32	3349-32-32	1809-32-32	2"-11.5	2" (2.385)	3.50	3.00	3.48	0.75	1.50	1.88	1.63
1878-40	N/A	1809-40-40	2-1/2"-8	2-1/2" (2.888)	4.00	N/A	3.98	0.75	1.50	N/A	2.13
1878-48	N/A	1809-48-48	3"-8	3" (3.510)	4.50	N/A	4.48	0.75	1.50	N/A	2.13
N/A	N/A	1809-64-64	4"-8	4" (4.510)	N/A	N/A	5.48	0.75	N/A	N/A	2.13