Pneumatic ptfe lined butterfly valve

Description

Pneumatic ptfe lined butterfly valve

The pneumatic pfa lined butterfly valves work best in applications that require high temperatures and harsh chemicals. The PTFE lining on the body and stem provides excellent corrosion resistance because it allows contact with media such as acids, alkalis and extreme temperatures without causing damage or wear. Pneumatic ptfe lined butterfly valves use less energy while offering better control than manual operated valves.

FEATURES

• ISO5211 direct mounting pad for easy automation
• Isolation height according to plant prescription
• Dirtscraper prevents moisture penetrating into the shaft area
• Three PTFE impregnated SS316L bearings are provided for precision alignment of the disc-shaft
• 3 layers sealing system ensures environment protection
• PTFE seat and rubber seat version interchangeable each other• PTFE-liner for chemically toxic and highly corrosive media, rubber liner for various of industry applications
• Silicon rubber energized back behind PTFE seat makes the sealing between liner and disc stable and offer a wide range of temperature
• One-piece disc-shaft design reduces the valve torque and increases Kv
• PTFE or rubber lined disc design option avoids high cost by expensive metal in corrosive applications
• Bubble-tight shut of at full pressure rating
• Can be disassembled, material-specific recycling possible
• Wave shape flange face design ensures the flange sealing of seat face not damaged by flange pressing, also avoids shrink of seat inside diameter because of flange pressing

PARTS LIST AND MATERIAL SPECIFICATION

No.	Part name	Material
1	Body	GGG40
2	Disc/shaft one piece	CF8M	1.4462	CF8M FEP lined	CF8 EPDM lined
3	Seat	PTFE,FPM,EPDM,PU,NBR		PTFE	EPDM
4	Seat Energizer	SR
5	Weather seal	NBR
6	Bearing	PTFE impregnated SS316L
7	Gland	PTFE
8	Screw	SS304
9	Belleville washer	SS304
10	Stuffing collar	SS316
11	O ring	FPM
12	V ring	PTFE

TECHNICAL DATA

Body style	wafer
Nominal diameter	2″ – 24″ (DN50mm – DN600mm)
Top flange	ISO5211
Operating pressure	16bar for DN50-DN200, 10bar for DN250-DN600
Temperature range	-20 °C to + 180 °C (depending on pressure, medium and material)
Flange accommodation	EN 1092 PN 6/PN10/PN16 ASME Class 150 AS 4087 PN10/ PN16 JIS 5K/10K
Operation	Hand lever, gear box, pneumatic actuator, electric actuator

Pneumatic actuator

action
Double acting	Failure to maintain
Single acting normally closed	Failure to close
Single acting normally open	Failure to open
Optional accessory	Solenoid valve limit switch box air filter relief pressure valve, E/P positioned manual device.

SIZE		A	B	C	D	E	F	d	G	H	L	WT(kg)
DN	INCH
50	2″	126	65	13.5	116	11	50	8	65	25	43	2
65	2 1/2″	138	79	13.5	136	11	50	8	65	59	46	3
80	3″	138	79	13.5	136	11	50	8	65	59	46	3
100	4″	167	97	17.5	170	14	70	10	90	86	52	5
125	5″	180	129	17.5	196	14	70	10	90	112	56	7
150	6″	203	142	18.5	227	17	70	10	90	140	56	8
200	8″	228	172	18.5	279	17	102	12	125	191	60	13
250	10″	266	213	24.5	336	22	102	12	125	241	58	22
300	12″	291	242	24.5	392	22	102	12	125	290	78	31
350	14″	332	262	30	445	27	125	14	150	331	78	44
400	16″	363	303.5	30	503	27	125	14	150	377	102	64
450	18″	397	324.5	39	553	36	140	18	175	425	114	86
500	20″	425	357	39	608	36	140	18	175	474	127	116
600	24″	498	419	49	717	46	165	22	210	570	154	179

Valve PN10 Flange size chart

NPS	DN	OD	PCB	Bolt	n-bolt
3/8	DN10	90	60	14	4
1/2	DN15	95	65	14	4
3/4	DN20	105	75	14	4
1	DN25	115	85	14	4
11/4	DN32	140	100	18	4
11/2	DN40	150	110	18	4
2	DN50	165	125	18	4
21/2	DN65	185	145	18	8
3	DN80	200	160	18	8
4	DN100	220	180	18	8
5	DN125	250	210	18	8
6	DN150	285	240	22	8
8	DN200	340	295	22	8
10	DN250	395	350	22	12
12	DN300	445	400	22	12
14	DN350	505	460	22	16
16	DN400	565	515	26	16
18	DN450	615	565	26	20
20	DN500	670	620	26	20
24	DN600	780	725	30	20
28	DN700	895	840	30	24
32	DN800	1015	950	33	24
36	DN900	1115	1050	33	28
40	DN1000	1230	1160	36	28
48	DN1200	1455	1380	39	32
56	DN1400	1675	1590	42	36
64	DN1600	1915	1820	48	40
72	DN1800	2115	2020	48	44
80	DN2000	2325	2230	48	48