PTFE lined Butterfly Valve

PTFE lined butterfly valve

The lined butterfly valves bi-directional flow is possible at maxmium operating pressure. Since the valve port corresponds to the piping diameter, a high flow capacity is guaranteed.
▪It features ease of maintenance, repeatable on-off, long life durability.
▪The concentric design is commonly used in the power generation, brewing, water and food industries and suitable for both gaseous and liquid service. Typically applied in chemical/petrochemical process, food and beverage, and pulp and paper etc.
▪ Lining material: PTFE, PFA, FEP, PO etc.
▪Connection type: wafer, flange, lug etc.
▪Operation methods: manual, worm gear, electric, pneumatic and hydraulic actuator.
▪The lined butterfly valves are available as per the needs of applications in additional sizes and other than standard

Material Specification

No.	Name	Material
1	Body	A216WCB	A351 CF8/A351 CF8M	A351 CF3/A351 CF3M
2	Stem	2Cr13(SS420) SS410 17-4PH
3	Shaft sleeve	SS304
4	O-ring	VITON VITON+FEP VITON+PFA
5	Disc	A216 WCB＋Lining material	CF8/CF8M＋Lining material	CF3 /CF3M＋Lining material
6	Seat	PTFE RPTFE PFA FEP PO
7	Elastomer Backing	Silicone rubber, VITON
8	Body bolt	A193 B7	A320 B8	A193 B8M
9	Bolt	A193 B7	A320 B8	A193 B8M

Technical Specification

Design & Manufacture Standard		HG/T 3704, GB/T 12238		API 6D8
Face-to-face Dimension		HG/T 3704, GB/T 12221		ASMEB16.10
Flange Standard		HG/T 20592, GB/T 9119		ASME B16.5, JIS B2220
Inspection and Test Standard		G B/T 13927, J B/T 9092		API 598
Nominal Diameter(MPa)		DN50~DN1600		2″~64″
Nominal Pressure(MPa)		1	1.5	150Lb
Pressure Test(MPa)	Shell Test	1.5	1.5	1.5
	High Pressure Sealing	1.1	1.1	1 . 1
	Low Pressure Sealing	0.6	0.6	0.6
Temperature Range（℃）		PTFE: 30～180 PFA: 30～200 FEP: 30～150 G×PO: 10～80
Applicable medium		Strong corrosive medium i.e. hydrochloric acid, Nitric acid, Hydrofluoric acid, Liquid chlorine, Sulfuric Acid and Aqua regia etc.

Note: Test standard refers general valve standard, high pressure should be customized for processing.

Structure Features

PTFE lined valve

HG/T 20592 （Unit：mm ）

DN	NPS	L1 Wafer	L2 Flange	PN1.0MPa			PN1.6MPa			D2	H1	H2	A
DN	NPS	L1 Wafer	L2 Flange	D	D1	Z-d	D	D1	Z-d	D2	H1	H2	A
40	1 1/2	40	106	150	110	4-18	150	110	4-18	70	60	90	78
50	2	43	108	165	125	4-18	165	125	4-18	90	70	112	96
65	2 1/2	46	112	185	145	4-18	185	145	4-18	110	80	125	112
80	3	46	114	200	160	8-18	200	160	8-18	130	89	135	130
100	4	52	127	220	180	8-18	220	180	8-18	148	105.5	142	150
125	5	56	140	250	210	8-18	250	210	8-18	181	121	165	178
150	6	56	140	285	240	8-22	285	240	8-22	202	145	180	206
200	8	60	152	340	295	8-22	340	295	12-22	263	177	228	260
250	10	68	165	395	350	12-22	405	355	12-26	313	205	278	317
300	12	78	178	445	400	12-22	460	410	12-26	368	235	295	367
350	14	78	190	505	460	16-22	520	470	16-26	415	260	341	466
400	16	102	216	565	515	16-26	580	525	16-30	484	299	390	495
450	18	114	222	615	565	20-26	640	585	20-30	519	320	442	630
500	20	127	229	670	620	20-26	715	650	20-33	569	352.5	470	694

ASNE B16.5 / JIS B2220（Unit：mm）

DN	NPS	L1 Wafer	L2 Flange	PN1.0MPa			PN1.6MPa			D2	H1	H2	A
DN	NPS	L1 Wafer	L2 Flange	D	D1	Z-d	D	D1	Z-d	D2	H1	H2	A
40	1 1/2	40	106	125	98.5	4-16	140	105	4-19	70	60	90	78
50	2	43	108	150	120.5	4-19	155	120	4-19	90	70	112	96
65	2 1/2	46	112	180	139.5	4-19	175	140	4-19	110	80	125	112
80	3	46	114	190	152.5	4-19	185	150	8-19	130	89	135	130
100	4	52	127	230	190.5	8-19	210	175	8-19	148	105.5	142	150
125	5	56	140	255	216	8-22	250	210	8-23	181	121	165	178
150	6	56	140	280	241.5	8-22	280	240	8-23	202	145	180	206
200	8	60	152	345	298.5	8-22	330	290	12-23	263	177	228	260
250	10	68	165	405	362	12-25	400	355	12-25	313	205	278	317
300	12	78	178	485	432	12-25	445	400	16-25	368	235	295	367
350	14	78	190	535	476	12-29	490	445	16-25	415	260	341	466
400	16	102	216	595	540	16-29	560	510	16-27	484	299	390	495
450	18	114	222	635	578	16-32	620	565	20-27	519	320	442	630
500	20	127	229	700	635	20-32	675	620	20-27	569	352.5	470	694

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