API butterfly valve

The API series of butterfly valves has several connection types such as clamp,flange,welding,protruding ear type(socket around body).and uses 3-dimension eccentric structure.with almost no attrition between seat and disc.with Function of sealing tighter and tighter and no matter under condition of sub zero or high tem-Perature of high pressure all have fine sealing performance.lt is is widely utilzed in foodstuff,pharmacy,petroleum,chemical industry,light industry,textile,metallurgy,mine,energy etc,as well as construction,environmental protection,water supply and drainage piping for opening and dosing or as just capacity of medium.

Cibbect dunebsuib : ANSI B16.5a-92 MSS SP-44-91 API609-83
Face to face: ANsI B16.10-86 API 609-91 MSS SP-68-97
Oressyre test: APl 598-94 MSS SPһ44-91 APl609-83

class	DN		Size
ANSI Class 150	2	50	43	152	120.5	75	195	45	4-19
	2¹/2	65	46	178	139.5	110	215	45	4-19
	3	80	48	190	152 5	120	255	45	4-19
	4	100	54	229	190.5	135	275	2230´	8-19
	5	125	56	254	216	150	295	2230´	8-22
	6	150	57	279	241.5	180	310	2230´	8-22
	8	200	64	343	298.5	210	380	2230´	8-22
	10	250	71	406	362	260	400	15	12-25
	12	300	81	483	432	290	490	15	12-25
	14	350	92	533	476	320	510	15	12-29
	16	400	102	597	539.5	350	600	1115´	16-29
	18	450	114	635	578	380	620	1115´	16-32
	20	500	127	698	635	410	680	9	20-32
	24	600	154	813	749.5	460	750	9	20-35
	28	700	165	927	863.5	530	820	626´	28-35
	30	750	167	984	914.5	570	860	626´	28-35
	32	800	190	1060	978	610	910	626´	28-41
	36	900	203	1168	1086	670	960	538´	32-41
	40	1000	216	1289	1200	720	940	5	36-41
	42	1050	222	1346	1257.5	770	1080	5	36-41
	48	1200	254	1511	1422.5	820	1220		44-41
ANSI Class 300	3	80	48	210	168.5	130	265	2230´	8-22
	4	100	54	254	200	155	295	2230´	8-22
	5	125	57	279	235	169	315	2230´	8-22
	6	150	59	318	270	199	329	15	12-22
	8	200	73	381	330	240	410	15	12-25
	10	250	83	445	387.5	273	430	1115´	16-29
	12	300	92	521	451	310	510	1115´	16-32
	14	350	117	584	514.5	350	540	90	20-32
	16	400	133	648	571.5	370	625	9	20-35
	18	450	149	711	628.5	415	655	730´	24-35
	20	500	159	775	686	440	710	730´	24-35
	24	600	181	914	813	518	810	730´	24-41
ANSl Class 600	3	80	54	210	168	130	265	2230´	8-22
	4	100	64	273	216	165	305	2230´	8-25
	5	125	78	330	266.5	195	340	2230´	8-29
	6	150	78	356	292	218	350	15	12-29
	8	200	102	419	349	260	430	15	12-32
	10	250	117	508	432	305	500	1130´	16-35
	12	300	140	559	489	330	530	9	20-35
	14	350	155	603	527	360	558	9	20-38
	16	400	178	686	603	405	655	9	20-41
	18	450	200	743	654	435	675	9	20-44
	20	500	216	813	724	470	740	730´	24-44
	24	600	232	940	835	550	840	730´	24-52

Flange type