API Butterfly Valve

Purpose and characteristic

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.

Adopt stamdard :

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 SP一44-91 APl609-83

Main performance parameter

Nominal diameter	NPS(in)	2″～48″
Nominal pressure	PN(Lb)	150	300	600
Test pressuerPs(MPa)	Strength test	225	450	900
	Seal test	165	330	660
	Gas seal test	O.5～O.7MPa
Suitable medium	Water,Oil Steam,Coal gas Acid,Alkali
Suitable temperature	-40℃-3.570℃

Materal for main parts

Name	Material
Body	WCB、304、316、CF8M
Disc	WCB、304、316、316SS、CF8M
Stem	420、316SS、316L、304
Seal ring	304、316、PTFE
Packing	PTFE ,Flexible graphite
Drive mode	Manual,Worm wheel actuator,Electric,Aerodynamic,Hydraulic

[NextPage]

Wafer type,protruding type

[NextPage]

Flange type

Pressure class	Diameter		Main commection dimension
	inch	mm	L	D	D1	H	H1	b	Z-φd
ANSI Class 150	3″	80	114	190	152.5	120	255	19	4-φ19
	4″	100	127	229	190.5	135	275	24	8-φ19
	5″	125	140	254	216	150	295	24	8-φ22
	6″	150	140	279	241.5	180	310	26	8-φ22
	8″	200	152	343	298.5	210	380	29	8-φ22
	10″	250	165	406	362	260	400	31	12-φ25
	12″	300	178	483	432	290	490	32	12-φ25
	14″	350	190	533	476	320	510	35	12-φ29
	16″	400	216	597	540	350	600	37	16-φ29
	18″	450	222	635	578	380	62	40	16-φ32
	20″	500	229	698	635	410	680	43	20-φ32
	24″	600	267	813	749.5	460	750	48	20-φ35
	28″	700	292	927	863.5	530	820	71	28-φ35
	30″	750	318	984	914.5	610	860	75	28-φ35
	32″	800	318	1060	978	610	910	81	28-φ41
	36″	900	330	1168	1086	670	960	90	32-φ41
	40″	1000	410	1289	1200	720	940	90	36-φ41
	42″	1050	410	1346	1257.5	770	1080	97	36-φ41
	48″	1200	470	1511	1422.5	820	1220	108	44-φ41
ANSI C1ass 300	3″	80	114	210	168.5	130	265	29	8-φ22
	4″	100	127	254	200	155	295	32	8-φ22
	5″	125	140	279	235	169	315	35	8-φ22
	6″	150	140	318	270	199	329	37	12-φ22
	8″	200	152	381	330	240	410	42	12-φ25
	1 0″	250	165	445	387.5	273	430	48	16-φ29
	1 2″	300	178	521	451	310	510	51	16-φ32
	14″	350	190	584	514.5	350	540	54	20-φ32
	1 6″	400	216	648	571.5	375	625	58	20-φ35
	1 8″	450	222	711	628.5	415	655	61	24-φ35
	20″	500	229	775	686	440	710	64	24-φ35
	24″	600	267	914	813	518	810	70	24-φ41
ANSI Class 600	3″	80	180	210	168	130	265	32	8-φ22
	d″	100	190	273	216	165	305	38	8-φ25
	5″	125	200	330	266.5	195	340	45	8-φ29
	6″	150	210	356	292	218	350	48	12-φ29
	8″	200	230	419	349	260	430	56	12-φ32
	10″	250	250	508	432	305	500	64	16-φ35
	12″	300	270	559	489	330	530	67	20-φ35
	14″	350	290	603	527	360	558	70	20-φ38
	16″	400	310	686	603	405	655	77	20-φ41
	18″	450	330	743	654	435	675	83	20-φ44
	20″	500	350	813	724	470	740	89	24-φ44
	24″	600	390	940	835	550	840	102	24-φ52

Cixi Shuangying Pipe & Valve Co., Ltd