HG 21537.4-1992 Normal pressure stainless steel stuffing box (PN＜0.1) HG21537.4-1992 standard download decompression password: www.bzxz.net

Normal pressure stainless steel stuffing box
HG 21537.4-92
Subject content and scope of application
This standard is for shaft sealing devices used in stirred vessels in industries such as chemical, petrochemical, dye, and pharmaceutical industries. Its nominal pressure PN<0.1MPa is suitable for corrosive media and media temperatures <200℃, and shaft speeds <1m/s. 23
2 Type, basic parameters and dimensions
The structural type, basic parameters and dimensions of this standard are shown in the following figure and Table 21~2. 24
Stud
Details
See Table 2-2
Same part number 3
Same part number 3
I plastic or type material
I type or type I material
Table 2-1
See instructions
GB 898-88A type
GB 41--86
GB 97. 1-85
Table 2 2
Gland stud
3 Technical requirements
The surface roughness parameter value of the shaft in contact with the stuffing box shall not exceed Ra3. 0.1
o. 8μmc).
3.0.2After the stuffing box is assembled, it must be tested with the equipment for water pressure test and air tightness test during operation. The test pressure and tightness requirements shall be in accordance with the equipment assembly drawing. 3.0.3The mechanical properties of studs and nuts shall be selected according to the national standard of 4.8 and 4 respectively, and the mechanical properties of washers shall be 140HV. 26
4 Notes
4.0.1The stuffing box shall be made of soft stuffing, which can be selected according to the operating requirements with reference to Appendix II and shall be indicated on the equipment assembly drawing.
4.0.2Two grades of stainless steel components of the stuffing box shall be selected, as shown in Table 4.0.2. Table 4.0.2
Material brand
OC18Ni11Tic321)
00Cr17Ni14Mo2(316L)
Marking example
Normal pressure stainless steel stuffing box with a nominal diameter of 50mm, made of OCr18Nii1Ti, is marked as:
Stuffing box DN50-1HG21537.4—92-3
4.0.4 When selecting stuffing boxes of various specifications in this standard, they should be marked according to the provisions of Table 4.0.4.
Stuffing box
Stuffing box
Stuffing box
Stuffing box
Stuffing boxbzxZ.net
Stuffing box
Stuffing box
Stuffing box
Stuffing box
Stuffing box
Stuffing box
Stuffing box
Stuffing box
Stuffing box
Stuffing box
Stuffing box
Stuffing box
Stuffing box
Stuffing box
Stuffing box
Stuffing box
Stuffing box
Stuffing box
Stuffing box
Stuffing box
Stuffing box
Stuffing box
Stuffing box
DN1001
DN1001
DN110I
DN1101
DN1201
DN1201
DN1301
DN1301
DN1401
DN1401
DN1601
DN1601
Specified mark
HG 21537. 4-- 92-- I
HG 21537.4--922
HG 21537. 4--92-3
HG 21537.4-92--4
HG 21537.4-92—5
HG 21537.4-92-6||t t||HG 21537.4--92-7
HG 21537.492-8
HG 21537.4--92-9
HG 21537. 4--92-10
HG 21537.4--92-11
HG 21537.4—92--12
HG21537.4—92-13
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