Product structure characteristics
A check valve is an “automatic” valve that is opened for downstream flow and closed for counter-flow.Open the valve by the pressure of the medium in the system, and close the valve when the medium flows backwards.The operation varies with the type of check valve mechanism.The most common types of check valves are swing, lift (plug and ball), butterfly, check, and tilting disc.Products are widely used in petroleum, chemical, pharmaceutical, chemica...
Testing:DIN 3352 Parf1 DIN 3230 Part 3 DIN 2401 Rating
Design:DIN 3356
Face to face:DIN 3202
Flanges:DIN 2501 DIN 2547 DIN 2526 FORME BWTO DIN 3239 DIN 3352 Parf1
Marking : EN19 CE-PED
Certificates:EN 10204-3.1B
Product Structure
Main Parts And Materials
PART NAME
MATERIAL
1
Boby
1.0619
1.4581
2
Seat surface
X20Cr13(1) overlay
1.4581 (1) overlay
3
Disc seat surface
X20Crl3(2) overlay
1.4581 (2) overlay
4
Bellow...
Product Structure
MAIN OUTER SIZE
Specification
L
G
A type
B type
C type
D type
E type
F type
DC type
DP type
15
1/2″
38
49
92
49
93
55
42.5
36.3
1/2″
20
3/4″
38
49.5
92
49
94
55
44
38.5
3/4″
25
1″
45
59
102
60
106
65
51
45
1″
32
1 1/4″
54
65.5
114
66
118
74
58
54.5
1 1/4″
40
1 1/2″
55
68
116
69
120
78
61.5
58
1 1/2″
50
2″
60
75
133
...
Product Description
The function of the check valve is to prevent the media from flowing backwards in the line.Check valve belongs to automatic valve class, opening and closing parts by the force of the flow medium to open or close.Check valve is only used for medium one-way flow on the pipeline, prevent medium backflow, to prevent accidents.
Product Description:
The main features
1, the middle flange structure (BB) : the valve body valve cover is bolted, this structure is easy to valve maint...