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Product Name:PTFE Lined Butterfly Valve
PTFE Lined Butterfly Valve
Specification
Design standard: API609
Flange connection dimension: DIN 2501 PN10; ANSI125/150; AS2129 Table D/E,ect. 
Face to Face: DIN3202-K1, BS5155, ANSI B16.10, MSS SP-67
Pressure test:  API 598
Size: 2"-12"
 
Application
This butterfly valve is separated style, enclosed the valve with the PTFE liner ring, Between the liner ring and valve is the back liner of 79 that made of high-elasticity rubber, the liner ring disc adopts the double spherical surface sealing structure, used for guarantee  the reliable closing and sealing performance even some laceration emerges due to long-time using.
The valve disc is the complete liner structure, and they adopt the spherical surface structure to the liner ring , the sealing structure between the valve disc , valve stem and liner ring ,is the highly reliable pressure self-sealing structure, which had got a patent items to guarantee that there will no leaking out during long-term use.
 
Materials
Part Name
Material
Body
GG25, WCB
Disc
GG25, WCB+PTFE Lined
Stem
SS410, SS304, SS316
Seat
PTFE
"O"ring
PTFE
Bushing
PTFE
 
Dimensions
DN
A
B
C
L
H
K
D1
N-1
E
c
n-d1
KG
50
77
135
130
42
32
77
120
4-6.7
57.15
12.7
4-22.0
3.2
65
91
138
150
45
32
77
136.2
4-6.7
57.15
12.7
4-22.0
5.8
80
95
138
164
45.2
32
77
160
4-6.7
57.15
12.7
4-22.0
6.5
100
121
149
188
53
32
92
185
4-10.3
69.85
15.8
4-24.0
11
125
125
173
220
54
32
92
215
4-10.3
69.85
19
4-24.0
13
150
150
187
252
56
32
92
238
4-10.3
69.85
19
4-26.0
16
200
182
225
305
61
45
115
295
4-14.5
88.9
22.2
4-26.0
27
250
226
14
370
65.3
45
115
357
4-14.5
88.9
28.6
4-29.0
35
300
260
195
430
77
45
140
407
4-14.5
107.95
31.8
4-29.0
51
350
275
335
470
77
45
140
467
4-14.5
107.95
31.8
4-30.0
76
400
305
410
565
86.5
51.2
197
515
4-20.6
158.75
33.34
4-28.0
97
450
338
440
620
105.5
51.2
197
565
4-20.6
158.75
38
4-28.0
125
500
375
195
695
131.8
64
197
620
4-20.6
158.75
41.15
4-28.0
186

We can also supply PTFE or FEP lined gate valves, diaphragm valves, ball valves, check valves and so on for special corrosive chemical industry.
 ♦ The Related Products for PTFE Lined Butterfly Valve: >>More...  
·PTFE Lined Butterfly Valve
·Concentric Double Flanged (U type) Butterfly Valve
·Wafer Type Butterfly Valve
·Lug Type Butterfly Valve
·DIN3202-K3 Flanged Double-eccentric Butterfly Valve
 

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