Product Main

Specifications

Specifications 

Expansion bellows 
1. Stainless steel bellows 
2. Hydraulic pressure forming 
3. Bushing or flange 
4. High pressure resistant 



Features and use of valve expansion bellows 


Corrugated pipe adopts multi-layer structure, than single layer to reduce the stiffness, increasing the displacement, to shorten the length of the valve. 

1. The design specification 
On the basis of relevant standards specified in the valve design manual stem diameter, smallest minimum opening stroke and corrugated component by external pressure welding form of graphic design, corrugated pipe component structure is reasonable, compact, is helpful to the design of the valve structure miniaturization. 

2. The main technical specifications 
Using range: The product is suitable for the corrugated pipe cut-off valve, corrugated pipe gate valve, throttle valve, bellows wave spinning tube regulator, etc. 

Nominal diameter: 16250 

Nominal pressure.: PN1.6 PN2.5, PN4.0 PN6.4, PN10.0, PN14.0. 

Expansion bellows design pressure form the outside pressure, pressure is 1.5 times the nominal pressure. 
Working temperature: - 196 ° C -- 1000 ° C


nominal diameter DN
length L
axial displacement
horizontal displacement
mm
deflexion angle
a1+a2

mm
inch
extension mm
compression mm

32
1 1/4
95
6
9
9
15

40
1 1/2
95
6
10
9
15

50
2
105
7
10
10
15

65
2 1/2
115
7
13
11
15

80
3
135
8
15
12
15

100
4
150
10
19
13
15

125
5
165
12
19
13
15

150
6
180
12
20
14
15

200
8
210
16
25
22
15

250
10
230
16
25
22
15

300
12
245
16
25
22
15

350
14
255
16
25
22
15

400
16
255
16
25
22
15

450
18
255
16
25
22
15

500
20
255
16
25
22
15

600
24
260
16
25
22
15

700
28
320
16
25
22
15

800
32
340
16
25
22
15

900
36
370
16
25
22
15

1000
40
400
18
26
24
15

1200
48
420
18
26
24
15