XOMOX® XP3 & XP 4D Sleeved Plug Valve

 

Certificates


ISO I5848-1

 

ISO 15848-1 is an International standard for fugitive emissions issued by the ISO Organization. It contains both dynamic life cycles and thermal cycles and is considered one of the most demanding fugitive emission standards for soft seated valves. This standard contains different levels of acceptance based on the number of thermal and mechanical cycles, temperature, and number of adjustments. The objective of ISO 15848-1 is to enable classification of performance in different designs and constructions of valves to reduce fugitive emissions.

 

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ISO-table-example-xp3

 

 

 

API 641

 

API 641 standard specifies the requirements and acceptance criteria for fugitive emission type testing of quarter-turn valves, issued by the API Organization. The type testing requirements contained are based on elements of EPA Method 21. Unlike ISO 15848, this standard is strictly pass/fail, with only one level of acceptance and no allowable adjustments.

 

 API 641 Will Always Consider Cycles
  • Valves shall be subjected to a total of 610 mechanical cycles and 3 thermal cycles per Figure 1
  • Mechanical and thermal cycling shall begin with the valve at ambient level
  • Test has been performed by using Methane as the test medium

 

 

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Class B

Class A

Valve pressure rating at 260° C (500° F) is ≥ 41.1

barg (600psig)

Valve Temperature Rating

≥ 260° C (500° F)

 

Class B

Valve pressure rating at 260° C (500° F) is < 41.1

barg (600 psig) and ≥ 6.89 barg (100 psig)

Class C

Valve with a temperature rating ≥ 260° C (500° F) and does not comply with the requirements of

Group A or Group B

NOTE: Valves with a pressure rating less than 6.89 barg (100 psig) at ambient temperature are outside the scope of this standard

 

 

Class E

Class D

Valve pressure rating at its maximum-rated temperature is ≥ 41.1 barg (600 psig)

Valve Temperature Rating

< 260° C (500° F)

 

Class E

Valve pressure rating at its maximum-rated temperature is < 41.1 barg (600 psig) and

≥ 6.89 barg (100 psig)

Class F

Valve with temperature rating < 260° C (500° F)

and does not comply with the requirements of Group D or Group E

NOTE: Valves with a pressure rating less than 6.89 barg (100 psig) at ambient temperature are outside the scope of this standard

 

API641-xp3-thermalcycle

 


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