American Petroleum Institute (API)

Face to face dimensions and weights of API 600 Gate valves

NPS CLASS 150	2	2.1/2	3	4	6	8	10	12	14	16	18	20	24	28	30	32	34	36	40	42	48
Face-to-face RF	178	191	203	229	267	292	330	356	381	406	432	457	508	610	610	660	711	711	762	813	864
Face-to-face BW	216	241	282	305	403	419	457	503	572	610	660	711	813	914	914	965	1016	1016	1067	1092	1168
Weights RF	22	25	30	45	85	134	202	290	370	534	669	810	1430	2067	2189	2427	2486	3563	4703	4600	7110
Weights BW	20	21	28	42	73	111	181	265	340	504	619	770	1513	2157	2259	2476	2538	3633	4733	4625	7050

Face to Face dimensions of flanged Valves

Face to Face dimensions Buttweld Ends

NPS CLASS 300	2	2.1/2	3	4	6	8	10	12	14	16	18	20	24	28	30	32	34	36	40	42	48
Face-to-face RF	216	241	282	305	404	419	457	502	762	838	914	991	1143	1346	1397	-	-	1727	1930	1981	2215
Face-to-face BW	232	257	298	321	419	435	473	518	778	854	930	1010	1165	1372	1422	-	-	1756	-	-	-
Weights RF	29	40	48	74	142	220	327	496	694	984	1306	1546	2360	3660	4350	-	-	6850	8460	9500	12400
Weights BW	24	35	37	64	122	172	232	391	644	834	1051	1226	1910	3010	3460	-	-	4990	6160	6800	9000

NPS CLASS 600	2	2.1/2	3	4	6	8	10	12	14	16	18	20	24	28	30	36	40	42
Face-to-face RF	292	330	356	432	559	660	787	838	889	991	1092	1194	1397	1594	1651	2083	2387	2489
Face-to-face BW	295	333	359	435	562	664	791	841	892	994	1095	1200	1406	1562	1664	2098	-	-
Weights RF	43	60	70	134	285	448	680	1068	1286	1841	2585	3108	4688	6050	6945	9740	10550	10950
Weights BW	28	45	60	104	205	313	535	973	1166	1511	2150	2558	3898	4980	5710	8140	8540	8770

Face to Face dimensions of flanged Valves

Face to Face dimensions Buttweld Ends

NPS CLASS 900	2	2.1/2	3	4	6	8	10	12	14	16	18	20	24
Face-to-face RF	368	419	381	457	610	737	838	965	1029	1130	1219	1321	1549
Face-to-face BW	371	422	384	460	612	740	841	968	1038	1140	1232	1333	1568
Weights RF	82	155	165	174	453	780	1248	1542	2220	3000	3870	4860	7300
Weights BW	59	170	130	134	358	625	1028	1290	1890	2565	3300	4050	6120

NPS CLASS 1500	2	2.1/2	3	4	6	8	10	12	14	16	18	20	24
Face-to-face RF	368	419	470	546	706	832	991	1130	1257	1384	1536	1664	1943
Face-to-face BW	371	422	473	549	711	841	1000	1146	1276	1406	1559	1686	1972
Weights RF	82	155	182	260	617	1440	2001	3816	4115	6950	9000	11130	16270
Weights BW	59	130	147	160	442	1200	1606	3211	3200	6000	7740	9560	13770

Face to Face dimensions of flanged Valves

Face to Face dimensions Buttweld Ends

NPS CLASS 2500	2	2.1/2	3	4	6	8	10	12
Face-to-face RF	451	508	578	673	914	1022	1270	1422
Face-to-face BW	454	514	584	683	927	1038	1292	1445
Weights RF	93	150	201	606	1590	2440	4574	7180
Weights BW	58	100	131	491	1300	2000	3800	6000

Notes..

Face to Face dimensions are in millimeters.
The Raised face dimensions are equivalent to the ASME B16.10 standard.
Weights are in kilograms.
The dimensions and weights in the tables on this page are based on information from several reliable manufacturers and should be considered approximate and for guidance only.

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