Ansifci 7032004 regulator seat leakagefci 8712004 classification and operating principles of steam trapsfci 9111997 r2003 standard for. There are six different seat leakage classifications as defined by ansi fci 702. Fci, power signal standard for springdiaphragm actuated control valves. Join your peers on the internets largest technical engineering professional community. Control valve seat leackage class vi maximun seat leackage. Our policy towards the use of cookies techstreet, a clarivate analytics brand, uses cookies to improve your online experience.
It is the kind of leakage rate you can expect from a valve with a metal plug and. Class i is also know as dust tight and can refer to metal or resilient seated valves. Ansifci 7022006 standard establishes a series of seat leakage classes for control valves and defines the test procedures. Ansifci standard 702, from the american national standards institute and the fluid controls institute, defines leakage classifications specifically for control valves. Fci 8722015, power signal standard for springdiaphragm actuated control valves. They were placed on your computer when you launched this website. The standard has been revised several times through the years to stay current as the industry.
Country or governing nobo which regulates the end user standard. Ansi fci 70 2 is the industry standard for control valve leakage. Also defined are specific test procedures to determine the appropriate class. Ansifci 7022006 control valve seat leakage valvias. Fci standards control valve section fluid controls institute. Ansi fci 70 2 2006 class vi maximum seat leakage allowable ansi fci 70 2 2006 bubbles per minute as tabulated are a suggested alternati. The iec is revising 60534 part 4, routine inspection and testing, which includes the applicable seat leakage standards for. There are six different seat leakage classifications as defined by ansi fci 70 2. Leakage classification of control valves engineering toolbox. During the canvass of the 2003 version, one respondent asked for the standard to be modified to specifically exclude onoff valves used for tight shutoff. Ansi fci 70 2 2006 american national standard control valve seat leakage1.
This standard does not apply to pressure regulators as defined in the following standards. Production tests for packing are generally not a standard. This standard does not apply to pressure regulators as defined in. Ansi american national standards institute api american petroleum institute. This standard is similar to ansifci 702 control valve seat leakage. On the market now is a seat leakage standard for regulatorsfci 7032003. There are actually six different seat leakage classifications as defined by ansifci 702 1976r1982. All constructive suggestions for expansion and revision of this standard are welcome. Ansifci 7022006 control valve seat leakage pdf document. Fci 7032016 download ansi, icc, ul, asme standards. Ansifci standard 702, from the american national standards institute and the fluid controls institute, defines leakage classifications specifically for control valves scope. Instantly download the fci 70 2 20 control valve seat leakage. The standard cannot be used as a basis for predicting leakage at conditions other than those specified. Scope ansifci 702 is the industry standard for control valve leakage.
This standard establishes six classes of seat leakage for control valves. It is the kind of leakage rate you can expect from a valve. It is strongly recommended that users of fci 702 also obtain a copy of fci 703. It really depends on the end user agreed standard or recommended practice or how the sil analysis view it. Classification of seat leakage through control seat leakage.
The fci has periodically updated the standard since the standards development in 2001. Fci 7032004 download ansi, icc, ul, asme standards. In addition the guiding, the seat material, the actuator thrust, the pressure drop and the type of fluid all play part in how well particular control valves shuts off. Iso standard 10434 is essentially the same as api 600, reproduced in the iso format. Leakage classification of control valve ansifci 702. Suggestions for improvement should be forwarded to the fluid controls institute, inc. The most common used are class iv class vl class iv is also known as metal to metal. The standard has been revised several times through the years to stay current as the industry and its products have evolved and advanced. The standard applies to pilot operated and direct acting pressure reducing, pressure relieving back pressure, differential pressure and temperature regulators. V alve testing standards msssp61 ansi fci 702 every valve testing standard has an acceptable leakage rate. Im going to examinate the fluid controls institute standard fci 7022003 about control valve seat leakage formerly known as asme 16.