YY/T 0157-2013Spring-loaded release valves for pressure steam sterilizers (English PDF)

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules.

Instead of the standard YY/T 0157-2005 "put pressure steam sterilization equipment steam valve spring." This standard compared with the original standard YY/T 0157-2005, the main changes are as follows.

--- The standard name was changed to "put pressure steam sterilization equipment steam valve spring";

--- Original standard Chapter 1 "Scope" was amended;

--- To Chapter 3, "Classification and flag" was amended to increase the "blowing off steam valve structure can be divided into two kinds of manual and automatic Types of";

--- Original standard Chapters 4 and 5 of chapter "Requirements" and "test method" was revised to delete the original standard of 4.5, for automatic release Steam valve to add the following technical requirements.

a) put the steam valve set pressure deviation shall not exceed ± 3% of the set pressure;

b) discharge steam valve discharge pressure should not exceed 1.03 times the set pressure.

1 Scope

This standard specifies the classification put pressure steam sterilization equipment and mark with a steam valve spring, requirements, test methods, inspection rules, marking and Instructions and packaging, transportation and storage.

This standard applies to the set pressure is less than 0.4MPa, nominal diameter greater than or equal to 8mm pressure steam sterilization equipment spring Type steam release valve (hereinafter referred to as "steam release valve"), the discharge valve for steam design pressure is less than 0.4MPa, the sterilization temperature range of 115 °C ~ 150 °C Steam sterilization equipment for use within.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document.

GB/T 9969 General Instructions industrial products

3 Categories and tags

3.3 release steam valve main parts of the material and the number given in Appendix B.

4 Requirements