Description

Lined PTFE butterfly valve

Lined PTFE butterfly valve, a revolutionary product designed for a wide variety of applications. This split-body design is lined with an array of materials like PTFE, EPDM, NBR, FPM and PU to fit all of your needs. For corrosive applications in chemical industries, PTFE is the preferred material; EPDM for water industries; NBR for oil transportation; FPM for a wide range of medium composition and temperature. Not only is this wafer design convenient for connection between flanges and pipe lines, but its ISO5211 direct mounting pad allows for easy automation. The isolation height also meets all plant prescriptions while its dirt scraper prevents any moisture from penetrating into the shaft area. Furthermore, three layers sealing system ensures environment protection as well as three PTFE impregnated SS316L bearings provided for precision alignment of the disc-shaft. The PTFE seat and rubber seat versions are interchangeable so you can choose what works best for you – whether it’s chemically toxic or highly corrosive media or various industry applications. Additionally, the one-piece disc-shaft design reduces torque and increases Kv while Silicon rubber energized back behind the PTFE seat stabilizes sealing between liner and disc across a wide range of temperatures. Finally, to avoid high costs from expensive metal in corrosive applications, we offer both PTFE and rubber lined valve disc designs. Get yours today!

Lined wafer butterfly valve is split body designed for a wide variety of liners such as PTFE, EPDM, NBR, FPM, PU to fit a wide range of applications.

PTFE is the preferred material for corrosive applications in chemical industry.
PU is the preferred material for abrasive applications.
EPDM is the preferred rubber for water industries.
NBR is the preferred rubber for oil transportation.
FPM is the preferred rubber for wide range of medium composition and temperature.
Wafer design makes the valve convenient for connection between flanges and save length in pipe line.

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

 

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