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Pneumatic Flanged Butterfly Valve

Size Range: DN50-DN2000

Material: SS304, SS316

Connection Options: Flanged End

Pressure: 0.6Mpa ~ 4.0Mpa

Working Temperature: -29°C to 425°C

Sealing Options: SS304 + Graphite

Applicable Medium: Water, oil, gas, acetic acid, nitric acid

Product Overview

A pneumatic flanged butterfly valve is an automated quarter-turn valve designed for fast, reliable on/off and flow control. With a secure flanged connection and pneumatic actuator, it delivers stable sealing, quick response, and dependable performance in water, HVAC, chemical, power, and oil & gas applications.

Product Features

Pneumatic actuator enables fast, reliable quarter-turn operation
Flanged connection provides secure installation and leak-tight sealing
Compact design with high flow capacity and low pressure drop
Suitable for on/off control and throttling applications
Compatible with double-acting and spring-return actuators
Available in multiple materials for various media and temperatures

Specification Parameters

ITEM	SPECIFICATION
Nominal Pressure (MPa)	PN0.6	PN1.0	PN1.6	PN2.5	PN4.0
Shell Test Pressure(MPa)	PT0.9	PT1.5	PT2.4	PT3.8	PT6.0
Low-Pressure Closure Test	0.6 MPa
Suitable Medium	Water, Oil, Gas, Acetic Acid, Nitric Acid
Suitable Temperature	−29 °C ~ 425 °C

Product parts materials

MATERIAL NAME	CARBON STEEL	STAINLESS STEEL
Body	WCB	CF8	CF8M
Disc	WCB	CF8	CF8M
Stem	13Cr	304	316
Seat Ring	304 + Graphite	304 + Graphite	304 + Graphite
Packing	Graphite	Graphite	Graphite

The main shape and connection dimensions – D673 in (mm)

NOMINAL DIAMETER	STRUCTURE LENGTH (STANDARD)		EXTERNAL DIMENSION				CONNECTION DIMENSION (STANDARD)
mm	SHORT L	LONG L	H	D673			PN0.6 MPa			PN1.0 MPa
mm	SHORT L	LONG L	H	L±2	A2	B2	D	D1	Z-d	D	D1	Z-d
50	108	950	112	43	161	67	140	110	4-14	165	125	4-18
65	112	870	115	46	166	75	160	130	4-14	185	145	4-18
80	114	790	120	46	173	96	190	150	4-18	200	160	8-18
100	127	710	138	52	187	114	210	170	4-18	220	180	8-18
125	140	630	164	56	194	126	240	200	8-18	250	210	8-18
150	140	550	175	56	216	140	265	225	8-18	285	240	8-22
200	152	510	200	60	256	164	320	280	8-18	340	295	8-22
250	165	470	243	68	286	205	375	335	12-18	395	350	12-22
300	178	430	250	78	327	237	440	395	12-22	445	400	12-22
350	190	390	280	78	348	260	490	445	12-22	505	460	16-22
400	216	350	305	—	—	—	540	495	16-22	565	515	16-26
450	222	330	350	—	—	—	595	550	16-22	615	565	20-26
500	229	310	380	—	—	—	645	600	20-22	670	620	20-26
600	267	290	445	—	—	—	755	705	20-26	780	725	20-30
700	292	270	480	—	—	—	860	810	24-26	895	840	24-30
800	318	250	530	—	—	—	975	920	24-30	1015	950	24-33
900	330	230	580	—	—	—	1075	1020	24-30	1115	1050	28-33
1000	410	210	650	—	—	—	1175	1120	28-30	1230	1160	28-36
1200	470	200	760	—	—	—	1405	1340	32-33	1455	1380	32-39
1400	530	190	850	—	—	—	1630	1560	36-36	1675	1590	36-42
1600	600	180	1030	—	—	—	1830	1760	40-36	1915	1820	40-48
1800	670	170	1230	—	—	—	2045	1970	44-39	2115	2020	44-48
2000	760	150	1350	—	—	—	2265	2180	48-42	2325	2230	48-48

NOMINAL DIAMETER (mm)	STRUCTURE LENGTH (STANDARD)	EXTERNAL DIMENSION				CONNECTION DIMENSION (STANDARD)
mm	L	H	D643			PN1.6 MPa			PN2.5 MPa
mm	L	H	H2	B2	A2	A3	B3	D	D1	Z-d	D
50	108	112	625	245	72	250	255	165	125	4-18	165
65	112	115	625	245	72	250	255	185	145	4-18	185
80	114	120	645	245	72	250	255	200	160	8-18	200
100	127	138	675	355	92	250	255	220	180	8-18	235
125	140	164	715	355	92	250	255	250	210	8-18	270
150	140	175	800	355	92	300	315	285	240	8-22	300
200	152	200	850	250	170	300	315	340	295	12-22	360
250	165	243	925	250	170	300	315	405	355	12-26	425
300	178	250	1035	450	220	300	315	460	410	12-26	485
350	190	280	1070	450	220	300	315	520	470	16-26	555
400	216	305	1190	450	220	300	315	580	525	16-30	620
450	222	350	1250	650	280	575	714	640	585	20-30	670
500	229	380	1290	650	280	575	714	715	650	20-33	730
600	267	445	1455	850	380	656	810	840	770	20-36	845
700	292	480	1585	850	380	656	810	910	840	24-36	960
800	318	530	1700	1250	380	656	810	1025	950	24-39	1085
900	330	580	1865	1250	380	785	863	1125	1050	28-39	1185
1000	410	650	2015	1250	380	785	863	1255	1170	28-42	1320
1200	470	760	2250	1250	380	785	863	1485	1390	32-48	1530
1400	530	850	—	—	—	—	—	1685	1590	36-48	1755
1600	600	1030	—	—	—	—	—	1930	1820	40-56	1975
1800	670	1230	—	—	—	—	—	2130	2020	44-56	2195
2000	760	1350	—	—	—	—	—	2345	2230	48-62	2425

NOMINAL DIAMETER	STRUCTURE LENGTH (STANDARD)		EXTERNAL DIMENSION				CONNECTION DIMENSION (STANDARD)
mm	SHORT L	LONG L	H	D643			PN4.0MPa
mm	SHORT L	LONG L	H	H2	B2	A2	D	D1	Z-d
50	108	150	112	625	250	170	165	125	4-18
65	112	170	115	625	250	170	185	145	8-18
80	114	180	120	645	250	170	200	160	8-18
100	127	190	138	675	250	170	235	190	8-22
125	140	200	164	715	450	220	270	220	8-26
150	140	210	175	800	450	220	300	250	8-26
200	152	230	200	850	450	220	375	320	12-30
250	165	250	243	925	450	280	450	385	12-33
300	178	270	250	1035	650	280	515	450	16-33
350	190	290	280	1070	650	280	580	510	16-36
400	216	310	305	1190	650	280	660	585	16-39
450	222	330	350	—	—	—	685	610	20-39
500	229	350	380	—	—	—	755	670	20-42

Specification Applications

Water supply and wastewater treatment systems
HVAC and district cooling/heating pipelines
Chemical and petrochemical processing lines
Power generation and utility systems
Oil & gas low- to medium-pressure pipelines
Industrial process automation and flow control systems

Pneumatic Flanged Butterfly Valve

Product Overview

Product Features

Specification Parameters

Product parts materials

The main shape and connection dimensions – D673 in (mm)

Specification Applications

Features

Resources

Links

Contact info