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Town construction industry is muti_function water pump controls standard of a po
From;    Author:Stand originally
Muti_function town of a powerful person of water pump control builds occupation standard

Construction ministry was released at was being approved on June 3, 2002 " muti_function water pump dominates a powerful person or family " (CJ/T167 - 2002) town builds occupation standard, ask to be carried out at rising on October 1, 2002.


This standard applies to nominal pressure to be PN1.0MPa - PN4.0MPa, nominal connects diameter to be DN50mm - of DN1200mm muti_function water pump dominates a powerful person or family.
Ask standard technology to introduce as follows now:

Temperature of 1 pressure —— spends class

Muti_function the grade of pressure —— temperature of a powerful person of water pump control by housing, inside the order and degree of pressure —— temperature that reachs control to provide systematic data is certain. Muti_function what a powerful person of water pump control falls in some temperature is the biggest allow actuating pressure to take housing, inside reach control to provide systematic data the biggest below this temperature the little value in allowing actuating pressure to be worth.

1.1 iron make the grade of pressure —— temperature of housing should accord with the regulation of GB/T17241.7.
The grade of pressure —— temperature of 1.2 steeliness housing should accord with the regulation of GB/T9124.
The 1.3 data that did not provide order and degree of pressure —— temperature to GB/T17241.7, GB/T9124, can press the regulation of relevant specification or design.

Body of 2 a powerful person

Flange of body of 2.1 a powerful person
Flange should be become with casting of whole of body of a powerful person. Iron makes the type of flange and dimension should accord with the regulation of GB/T17241.6, technical condition should accord with the regulation of GB/T17241.7; The type of steeliness flange and dimension should accord with the regulation of GB/T9113.1, technical condition should accord with the regulation of GB/T9124.
Length of structure of system of 2.2 a powerful person sees a table 1.
The least wall of body of 2.3 a powerful person is large cast-iron the least wall of a body of a powerful person is large should accord with GB/T13932 - 1992 in express the regulation of 3, cast steel the least wall of body of a powerful person is large should accord with JB/T8937 - 1999 in express the regulation of 1.
  
3 a powerful person build diaphragm
  
Lid of 3.1 a powerful person and diaphragm, diaphragm should use flange formula with the join type of body of a powerful person.
3.2 diaphragm do not get with the join bolt amount of body of a powerful person little at 4.
Lid of 3.3 a powerful person and diaphragm the least wall is large press the demand of 2.3.
Lid of 3.4 a powerful person and diaphragm flange should be a circle. The type of flange sealing surface can use planar formula, dash forward range pattern or concave and convex type
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