Continuous suture technique for aortic valve replacement ncbi. The iec site includes information about electric, electronic and electrotechnical international standards, compliance and conformity assessment for electronics and electronic equipment, and international electrical standards information. The standards referenced within this document may contain provisions which, through reference in this text, constitute requirements of this document. Iec 605341 industrialprocess control valves part 1. The equations for incompressible flow are based on standard hydrodynamic equations for newtonian incompressible fluids. Special print improvement of iec 6053483 standard for. Parcol 12471 series control valves feature a double eccentric disc and an easytobe changed ptfe or metal seal ring. Sc energytech, flowcon international aps, denmark 02. Aortic valve replacement using continuous suture technique in.
Pdf flow equations for sizing control valves approved 3. Dimensions facetoface dimensions for flanged, twoway, globetype. The current iec 6053483 standard for predicting aerodynamic noise in control valves regulating the. Control valve terminology and general considerations published by iec on january 1, 2005 this part of iec 60534 applies to all types of industrialprocess control valves hereinafter referred to as control valves. Dead band plus hysteresis estimation with valvelink. By jesper fischer nielsen, application engineer, m.
A bilingual version of this standard may be issued at a later date. This part of iec 60534 specifies facetoface ftf and centretoface ctf dimensions for given nominal sizes and pressure ratings of flanged, twoway, globetype, straight pattern and. We read with interest the article by kitamura and colleagues about their continuous suture technique for aortic valve replacement avr, which. This part of iec 60534 applies to all types of industrialprocess control valves hereinafter referred to as control valves. Hysteresis, dead band, and dead band plus hysteresis curves. Iec 605344 industrialprocess control valves part 4. Bs en 6053412005, industrial process control valves. From october 2007 to may 2012, a total of 123 patients underwent avr alone or with concomitant cardiac procedures, such. Snapfour help menu iec 60534 to apply iec 53483 a few initial inputs are run through roughly 40 equations to generate a predicted noise output. There are actually six different seat leakage classifications defined by ansifci 702 2006 european equivalent standard iec 60534 4. Iec 6053421 covers sizing equations for both incompressible and compressible fluid flow. In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to know and speak the laws that govern them. Iec 605341 industrial process control valves terminology.
The tests described in reference 1 established that the present standard can lead to considerable inac. Flow capacity sizing equations for fluid flow under installed conditions newest version valid from 05. This part establishes a partial basic terminology list and provides guidance on the use of all other parts of iec 60534. This part of iec 60534 specifies facetoface ftf and centretoface ctf dimensions for given nominal sizes and pressure ratings of flanged, twoway, globetype, straight pattern and angle pattern control valves. 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. Emerson engineers started with a clean slate in developing fisher gx control valves. The international electrotechnical commission is the international standards and conformity assessment body for all fields of electrotechnology. All bsi british standards available online in electronic and print formats. Control valve terminology and general considerations. Annexes a, b, c, d, e, f, and g are for information only.1588 908 891 1289 669 299 354 202 624 61 972 332 1019 1344 951 1561 1527 1544 503 783 32 1583 434 1043 1096 1007 703 996 351 673 511 1128 650 1095 153 1574 785 179 850 891 352 1030 1479 1490 239 15