API 609 Eccentric Wafer Butterfly Valve

The API 609 Eccentric Wafer Butterfly Valve can be used to regulate or isolate the medium valve in the pipeline.

• Metal Seat: Tight seal, suitable for applications with high temperature or harsh chemicals.
• Triple eccentric design: reduces the friction between the valve plate and the valve seat, and prolongs the service life.
• Wafer design: short structure length, less land occupation, lower cost than flange eccentric butterfly valve.
• Worm gear: It can control API 609 Eccentric Wafer Butterfly Valve position precisely and smoothly, ensuring precise flow regulation.

PN（16、25）MPa

DN	Overall Dimension					Connecting Dimension
	L	H	D73H/D373H/D673H/D973H			PN1.6MPa		PN2.5MPa
			H1	A1	B1	D1	Z-d	D1	Z-d
50	43	112	350	180	200	125	4-18	125	4-18
65	46	115	370	180	200	145	4-18	145	8-18
80	49	120	380	180	200	160	8-18	160	8-18
100	56	138	420	180	200	180	8-18	190	8-22
125	64	164	460	180	200	210	8-18	220	8-26
150	70	175	555	270	280	240	8-22	250	8-26
200	71	208	605	270	280	295	12-22	310	12-26
250	76	243	680	270	280	335	12-26	370	12-30
300	83	283	825	380	420	410	12-26	430	16-30
350	92	310	900	380	420	470	16-26	490	16-33
400	102	340	980	450	470	525	16-30	550	16-36
450	114	380	1030	480	490	585	20-30	600	20-36
500	127	410	1105	480	490	650	20-33	660	20-36
600	154	470	1310	480	490	770	20-36	770	20-39
700	165	550	1435	640	660	840	24-36	875	24-42
800	190	640	1605	640	660	950	24-39	990	24-48
900	203	710	1745	750	860	1050	28-39	1090	28-48
1000	216	770	1885	850	900	1170	28-42	1210	28-56
1200	254	890	2105	850	900	1390	32-48	1420	32-56

Manufacture Process