The PTFE Lined Butterfly Valve represents an innovative versatile solution which provides high-quality fluid and switch and modulating control capabilities in corrosive environments. Our lined pfa butterfly valve combines top-grade materials with a robust leak-free sealing mechanism to deliver outstanding performance and resilience.
With its wide-ranging compatibility with various liners such as PTFE, EPDM, NBR, FPM, and PU, the lined wafer butterfly valve meets the requirements of diverse industries. Additionally, the valve can be equipped with your choice of pneumatic or electric actuator for actuation flexibility.
* The dimensions along with weight and pressure ratings and temperature ranges will differ according to the particular valve model selected.
Advantages
The Body PTFE Lined Butterfly Valve provides multiple advantages compared to other available products:
The PTFE lining provides superior resistance to harsh chemicals including acids and alkalis and other corrosive media.
The reliable sealing mechanism of this product ensures both leakage prevention and optimal operational performance.
The combination of premium materials with expert engineering design results in reduced maintenance requirements which saves you time and money.
We provide customized solutions through various material choices and configuration options to fulfill your specific needs.
Applications
The Pfa Lined Butterfly Valves expertly handles a variety of chemical and process industries, including:
Chemical processing
Petrochemicals
Water treatment
Food and beverage
Pharmaceuticals
Due to its corrosion-resistant properties, the valve is well-suited for managing various fluids, including acids, alkalis, and other corrosive media.
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
DIMENSIONS (mm)
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
FAQs
What is lined butterfly valve?
A lined butterfly valve is a type of valve used in various industrial sectors for controlling the flow of fluid through pipes. It consists of a disc or plate that rotates and is mounted inside the body.
The most common lining material used on butterfly valves is PTFE (polytetrafluoroethylene). PTFE lined butterfly valves are usually more durable than non-lined ones as they offer greater resistance to corrosion, abrasion, erosion, wear and tear due to their chemical inert nature.
What material is butterfly valve lining?
A butterfly valve lining is typically composed of a variety of materials, depending on its intended application. The most common types of materials used for butterfly valve linings are polytetrafluoroethylene (PTFE), ethylene propylene rubber (EPDM), and nitrile rubber (NBR).
What is PTFE lined butterfly valve?
A PTFE lined butterfly valve is a specialized type of control valve used in a variety of industries, such as oil and gas, petrochemical, pharmaceutical, and food processing. It is constructed with an inner core that has been lined with polytetrafluoroethylene (PTFE). This lining provides the benefits of non-contamination abilities while also having excellent resistance to most chemicals.
What is PFA lined butterfly valve?
A PFA lined butterfly valve is a type of shut-off valve with an opening through which fluid and gas can pass. It consists of a disc or circular plate, which is rotated by an actuator to control flow. The valves are usually located in the middle of the pipe where it connects two other components and allows one-way or two-way flow depending on whether it opens fully or partially.
