HG/T 2129.11-1991 Acid-resistant phenolic plastics for chemical equipment parts Tubular liquid level gauges HG/T2129.11-1991 Standard download decompression password: www.bzxz.net

Scope of application
Chemical industry standard of the People's Republic of China
Tube liquid level gauge made of acid-resistant phenolic plastic chemical equipment parts
HG/T2129.11-91
This standard applies to tube liquid level gauges made of acid-resistant phenolic plastic with an allowable temperature of -30℃～130℃ and an allowable pressure of less than or equal to 0.29MPa at room temperature
Referenced standards
GB1804 Tolerances and fits Limit deviations of dimensions without tolerances HG/T2128 Technical conditions for chemical equipment, pipes and fittings made of acid-resistant phenolic plastic QB776 Glass plates and glass tubes for liquid level gauges
3 Types and basic dimensions
Types and basic dimensions are as shown in the figure below and the provisions of Tables 1 and 2. Approved by the Ministry of Chemical Industry of the People's Republic of China on August 19, 199124|| tt||1992-01-01 implementation
HG/T2129.11—91
Nominal length 4
Glass tube length L
Mass, kg
Split cast iron flangewwW.bzxz.Net
Upper cock
Corrugated glass tube
Lower cock
HG/T2129.11—91
Parts list
Basic size table
Quality inspection, packaging, storage and transportation of raw materials and products 800
Acid-resistant phenolic plastics
Assemblies
Silicon glass
Assemblies
The quality inspection, packaging, storage and transportation of raw materials and products shall comply with the provisions of HG/T2128, and the pressure test of the liquid level gauge and the glass tube of the equipment shall be carried out in accordance with QB776 standard.
Non-matching dimension tolerance grade of metal parts: machined surface is in accordance with IT14 in GB1804: non-working surface is in accordance with IT16. Marking example
Glass tube liquid level gauge with nominal length A=500mm, its marking symbol is: Liquid level gauge A500mmHG/T2129.1191
Additional instructions:
This standard is proposed by China National Chemical Equipment Corporation, and this standard is under the jurisdiction of the National Non-Metal Chemical Equipment Standardization Technical Committee. This standard is drafted by Chengdu Chemical Research and Design Institute. The main drafters of this standard are He Jiabing, He Jin, 26
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