Pneumatic Actuated Flanged Triple Eccentric Butterfly Valve

Pneumatic Actuated Flanged Triple Eccentric Butterfly Valve

The Pneumatic Actuated Flanged Triple Eccentric Butterfly Valve is engineered for high-performance flow control in demanding industrial environments. Featuring a robust ductile iron body and precision metal seal, this valve ensures excellent sealing performance and durability under high pressure class conditions. The pneumatic actuator is available in both double acting and spring return configurations, offering flexible automation options. Designed with a triple eccentric structure, it minimizes friction during operation, reduces wear, and extends service life. Ideal for systems requiring reliable shutoff and throttling, this pneumatic flange triple eccentric butterfly valve delivers superior performance and long-term reliability.

Model: D643H(F,Y).

Bore: DN50~1200mm

Pressure: 150Lb, 300Lb

Dimension Standard: Chinese Standard, ANSI

Type of Connection: Flange Type Connection

Body Material: Carbon Steel(WCB), Stainless Steel(CF8, CF8M, CF3, CF3M)

Seat Material: Metal Sealed(H,Y), PTFE(F)

Mode of Action: Double acting,Single acting(String Return)

Mode of Control: Switch Type, Adjust Type

Annex Choice: Solenoid Valve, Locator,Limit Switch, F.R.L. Combination Unit,Manual Organization.

Technical Specifications

Design Basis	GB Standard	ANSI Standard
Design Standard	GB/12238	API609
Face-to-Face Dimension	GB/12221	ANSI B16.10
Connecting Flange Size	GB/9113, JB/T79	ANSI B16.5 (2"-24") ANSI B16.47 (26"-32")
Test & Inspection	JB/T9092	API 598

Note:The structural length and connecting flange size of ball valve series can be designed and manufacured as per users'requirements.

Form of Main Parts Materials

No.	Name of parts	Material (C)	Material (P)	Material (R)
1	Inner Hexagon Screw	1Cr18Ni9Ti	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
2	Bonnet	WCB	1Cr18Ni9Ti	ZG1Cr18Ni12Mo2Ti
3	Gasket	1Cr18Ni9Ti	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
4	Seat	Stainless Steel+Graphite, PTFE	Stainless Steel+Graphite, PTFE	Stainless Steel+Graphite, PTFE
5	Gasket	1Cr18Ni9Ti	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
6	Butterfly Plate	WCB	ZG1Cr18Ni9Ti	ZG1Cr18Ni12Mo2Ti
7	Straight Pin	45	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
8	Bottom Cover	WCB	ZG1Cr18Ni9Ti	ZG1Cr18Ni12Mo2Ti
9	Gasket	Stainless Steel+Graphite, PTFE	Stainless Steel+Graphite, PTFE	Stainless Steel+Graphite, PTFE
10	Bushing	PTFE Composite Bearings	PTFE Composite Bearings	PTFE Composite Bearings
11	Body	WCB	ZG1Cr18Ni9Ti	ZG1Cr18Ni12Mo2Ti
12	Stern	1Cr13	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
13	Yoke	WCB	WCB	WCB
14	Key	45	45	45
15	Bushing	PTFE Composite Bearings	PTFE Composite Bearings	PTFE Composite Bearings
16	Packing	Graphite, PTFE	Graphite, PTFE	Graphite, PTFE
17	Gland	WCB	ZG1Cr18Ni9Ti	ZG1Cr18Ni12Mo2Ti
18	Pneumatic Actuator	AT Series, AW Series	AT Series, AW Series	AT Series, AW Series

Note: The main components and sealing rings of the series ball valves can be designed and selected according to actual working conditions or special user requirements.

D643H (F, Y) - Class 150 Main Outline and Connecting Flange Size

Nominal Diameter		Outline Size					Connecting Size					Actuator Model
DN	in	L	L₁	L₂	~H	H₁	D	D₁	D₂	f	n-Φd	Actuator Model
50	2	108	159/211	83/95	277/305	65	152	120.5	92	2	4-Φ19	AT063D/AT075S
65	2	112	211/248	95/107	287/325	75	178	139.5	105	2	4-Φ19	AT075D/AT088S
80	3	114	248/269	107/123	365/391	85	190	152.5	127	2	4-Φ19	AT088D/AT100S
100	4	127	269/315	123/141	420/457	130	229	190.5	157	2	8-Φ19	AT100D/AT115S
125	5	140	315/345	141/152	436/462	175	254	216	186	2	8-Φ22	AT115D/AT125S
150	6	140	345/409	152/172	466/543	190	279	241.5	216	2	8-Φ22	AT125D/AT145S
200	8	152	409/550	172/215	593/665	215	343	298.5	270	2	8-Φ22	AT145D/AT190S
250	10	165	438/600	187/240	682/752	265	406	362	324	2	12-Φ25	AT160D/AT210S
300	12	178	600/633	240/262	702/820	305	483	432	381	2	12-Φ25	AT190D/AT240S
350	14	190	600/633	240/262	832/938	340	533	476	413	2	12-Φ29	AT210D/AT240S
400	16	216	633/730	262/330	910/968	360	597	540	470	2	16-Φ29	AT240D/AT270S
450	18	222	633/730	262/330	1005/1010	400	635	578	533	2	16-Φ32	AT240D/AT270S
500	20	229	730/1700	330/440	1058/1065	430	699	635	584	2	20-Φ32	AT270D/AW25S
600	24	267	1180/1700	365/440	1110/1195	490	813	749.5	682	2	20-Φ35	AW20/AW25S
700	28	292	1320/1970	440/480	1255/1295	555	947	863.6	800	2	28-Φ35	AW25/AW28S
800	32	318	1430/2700	480/560	1325/1365	620	1060	978	914	2	28-Φ41	AW28/AW35S

D643H (F, Y) - Class 300 Main Outline and Connecting Flange Size

Nominal Diameter		Outline Size					Connecting Size					Actuator Model
DN	in	L	L₁	L₂	~H	H₁	D	D₁	D₂	f	n-Φd	Actuator Model
50	2	108	211/248	95/107	277/305	65	165	127	92	2	8-Φ19	AT075D/AT088S
65	2½	112	248/269	107/123	310/341	75	190	149	105	2	8-Φ22	AT088D/AT100S
80	3	114	269/315	123/141	375/412	85	210	168.5	127	2	8-Φ22	AT100D/AT115S
100	4	127	315/345	141/152	436/462	130	254	200	157	2	8-Φ22	AT115D/AT145S
125	5	140	345/348	152/187	462/513	175	279	235	186	2	8-Φ22	AT125D/AT160S
150	6	140	438/600	187/240	543/615	190	318	270	216	2	12-Φ22	AT145D/AT160S
200	8	152	550/600	215/240	665/760	215	381	330	270	2	12-Φ25	AT160D/AT210S
250	10	165	600/633	240/262	752/858	265	445	387.5	324	2	16-Φ29	AT190D/AT240S
300	12	178	600/730	240/262	820/880	305	521	451	381	2	16-Φ32	AT210D/AT270S
350	14	190	633/1700	262/440	938/940	340	584	514.5	413	2	20-Φ32	AT240D/AW25S
400	16	216	730/1700	330/440	970/1055	360	648	571.5	470	2	20-Φ35	AT270D/AW25S
450	18	222	730/1700	330/440	1005/1090	400	711	628.5	533	2	24-Φ35	AT270D/AW25S
500	20	229	1180/1970	365/480	1145/1185	430	775	686	584	2	24-Φ35	AW20/AW25S
600	24	267	1320/1970	440/480	1195/1235	490	914	813	682	2	24-Φ41	AW25/AW28S

Note: The structural length and connecting flange size of ball valve series can be designed and manufactured as per users' requirements. Note: Data XXX/XXX represent respectively the double - acting/single - acting type(spring reposition)of pneumatic actuator Note: The relative sizes are subject to change depending on the differential in valve torque, medium and actuator model Note: the above actuator configuration and data all use soft - seated valves (F, N, P )and hard - seated valves, or consulting us if you have more questions.