1. SCOPE

1.1 This standard specifies the terms, definitions, types, basic parameters, requirements, testing, marking, packing, transportation and storage of thermostatic refrigerant expansion valve (hereinafter referred to as ‘expansion valve’) of various types as listed in 4.1.

1.2 This standard is applicable to the thermostatic expansion valves for refrigeration with R22, R134a, R404A, R407C, R410A, R507, R290, R32 and R23 evaporating at the temperature of – 60 °C to 15 °C.

NOTE - This standard may be used as a reference for other thermostatic expansion valves with other refrigerants.

2. REFERENCES

The standards listed in Annex A contain provisions which, through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate thepossibility of applying the most recent editions of the standards listed in Annex A.