【 The ball valve model establishment method, method of ball valve specifications 】 Ball valve ball valve in the field of chemical industry and ship, all kinds of industrial application scope broad, ball valve standard GB/T21465 - 2008 'valve terms' are defined as opening and closing ( A sphere) Driven by the stem and round ball valve axis rotation movement of the valve. The method of the ball valve model editor is mainly to the additional codes, codes of ball valve ball valve, drive mode, connecting form, structure, form, the seal material, pressure rating, body material, we hope to help the masses of users.

the ball valve model establishment method and the method of code said:

ball valve additional code: V cryogenic valve core with a v-shaped structure, D, B said heat preservation, eccentric structure, U and S and p said DY said jacket type; The code name of the ball valve: Q said ball valve;

the ball valve model establishment method and the representation method for the code, a unit: transmission way

drive for electromagnetic actuator

electromagnetic - Hydraulic

electricity - Worm wheel hydraulic

spur gear

bevel gear

pneumatic

hydraulic

gas Electric hydraulic

handle the handwheel

code

0

1

two

3

4

5

6

7

and

9

no code

safety valve, relief valve, steam trap, the handwheel connected directly to the valve stem structure of valve operation, this code is omitted, don't say; For pneumatic or hydraulic agencies operating valves: often open with 6 k, 7 k said; Often closed in 6 b and 7 b; Explosion-proof electric device of valve with 9 b said.

the ball valve model establishment method and the representation method for the code, the second unit: connection type

connection

internal thread

external thread

two different connection

flange welding

to clamp

clamp

card sets of

code

1

two

3

4

6

7

and

9

the ball valve model establishment method and the representation method for the code three modules: the structural type of

the valve structure expressed with Arabic numerals, as stipulated in the table below. Ball valve structure code

structure form

code

structure form

code

floating moving ball

direct port

1

fixed ball

direct port

7

Y T port

two

cross flow

6

L T port

4

T T port

and

T T port

5

L T port

9

& ndash;

-

hemisphere pass-through

0

the ball Industrial Valves model establishment method and the representation method for the code, the fourth unit: multiplicity-sealing materials

materials

plastic metal babbitt

China

nitriding steel

18 8 series stainless steel

fluorine plastic

glass

Cr13 stainless steel

rubber lining

monel alloy

nylon plastic

boriding steel

lead-lined

Mo2Ti stainless steel

plastic

copper alloy

rubber

carbide

body directly processing

code

B

C

D

E

F

G

H

J

M

N

p

Q

R

S

T

X

Y

W

when the sealing face of the seal material is not at the same time, with low hardness material symbol said.

the ball valve model establishment method and the symbol representation, five modules: pressure rating said

PN1. 0 - 32Mpa，10=1. 0 mpa pressure is 10 kg, 150 lb - 1500 lb class said American standard pressure, 5 - 63 k day class pressure;

gb, American standard, Japanese standard nominal pressure valve, pounds ( Lb） , mpa ( Mpa） And ( bar） , Japanese standard ( K） Level conversion table.

boriding steel

p

note: 1, the process directly by valve body seat sealing material code with & other; W” Said.

2, when the seat and disc ( plate) Sealing material is not at the same time, use low hardness material symbol representation ( Except diaphragm valve) 。

ball valve editor, for example: 1, DQ41H - Low temperature 16 P said: D, 1, 4 Q ball valve flange connection, the floating straight flow channel, H stainless steel, 16 pressure is 16 kg, P for 18 to valve body 8 series stainless steel;

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