1. Design and Manufacture: GB/T 12224 2. Face to Face Dimension: Manufacturer's Standard 3. Flange Dimension: JB/T 79.1, ANSI B16.5 DIN 2543, JIS B2020 4. Inspection and Test: GB/T 9092 5. Material Standard: GB/T 12229 for Carbon Steel, GB/T 12230 for Stainless Steel
Materials for Main Parts
Sr.No.
Part
Material
Sr.No.
Part
Material
1
Valve Cover
WCB
12
Hex Nut
Grade 8
2
Middle Body
WCB
13
Stud
B7
3
Middle Body Sleeve
Ceramic
14
Packing Gland
WCB
4
O-Ring
Viton
15
Spacer
Q235
5
Flange Sleeve
Ceramic
16
Circlip for Shaft
65Mn
6
Ball
Ceramic
17
Handle
CS
7
O-Ring
Viton
18
Gasket
Q235
8
Dish Spring
50CrVA
19
Screw
35#
9
Washer
304
20
Hex Bolts
B7
10
Stem
2Cr13
21
Big Washer
PTFE
11
Packing
PTFE
22
Seat
Ceramic
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