Terminology C. Parts of Pressure Relief Devices

<body topmargin=0 leftmargin=0 marginheight=0 marginwidth=0> <table cellpadding=0 cellspacing=0 border=0><tr> <td valign="top" colspan=2 height=90 BGCOLOR="#000066" TEXT="#F7F7FF" bgproperties="fixed" background="66b00c10dkbliw.jpg"> <div> <FONT SIZE="2" COLOR="#FF6600" FACE="Arial" ><A HREF="index.htm" TARGET="_top" TITLE="PRD Technologies Inc."><U><B>HOME </B></U></A><B> </B></FONT><B>   </B><A HREF="id151.htm" TARGET="_top" TITLE="Pressure Relief Device Terminology"><U><B> </B></U></A><FONT SIZE="2" COLOR="#FF6600" FACE="Arial" ><A HREF="id151.htm" TARGET="_top" TITLE="Pressure Relief Device Terminology"><U><B> BACK </B></U></A></FONT><A HREF="id151.htm" TARGET="_top" TITLE="Pressure Relief Device Terminology"><U><B> </B></U></A><B>|  </B><FONT SIZE="7" COLOR="#FF6600" FACE="Arial" ><B> </B></FONT><FONT SIZE="7" COLOR="#FFFFCC" FACE="Arial" ><B>  </B></FONT><FONT SIZE="6" COLOR="#FFFFFF" FACE="Arial" ><B>PRD Technologies Inc.</B></FONT></div> <bR> <div> </div> </td> </tr><tr> <td valign="top" width=210 BGCOLOR="#FFFFFF" TEXT="#080000"> <div> Terminology C. Parts of Pressure Relief Devices</div> <bR> <div> <B><IMG SRC="41a9b3e0.png" border=0 width="155" height="62" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></B></div> <div> <B><IMG SRC="25f80500.jpg" border=0 width="128" height="80" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></B></div> <div> <B><IMG SRC="57482420.jpg" border=0 width="130" height="66" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></B></div> </td> <td valign="top" height=390 BGCOLOR="#FFFFFF" TEXT="#080000"> <div> <I><B>Pressure Relief Solutions & Services</B></I></div> <bR> <div> <B>C. Parts of Pressure Relief Devices</B></div> <bR> <div> <I><B>approach channel </B></I>- the passage through which the fluid must pass to reach the operating parts of a pres-sure</div> <div> relief device</div> <div> <I><B>breaking pin </B></I>- the load-carrying element of a breaking pin device</div> <div> <I><B>breaking pin housing </B></I><I>- </I>the structure which encloses the breaking pin mechanism</div> <div> <I><B>discharge channel - </B></I>the passage through which the fluid must pass between the operating parts of a pres-sure</div> <div> relief device and its outlet</div> <div> <I><B>disc </B></I>- the pressure containing movable element of a pressure relief valve which effects closure</div> <div> <I><B>huddling chamber </B></I>- the annular pressure chamber located beyond the valve seat for the purpose of gener-ating</div> <div> a popping characteristic</div> <div> <I><B>lifting device </B></I>- a device for manually opening a pres-sure relief valve by the application of external force to</div> <div> lessen the spring loading which holds the valve closed</div> <div> <I><B>lifting lever </B></I>- see <I>lifting device</I></div> <div> <I><B>nozzle - </B></I>a pressure containing element which constitutes the inlet flow passage and includes the fixed</div> <div> portion of the seat closure</div> <div> <I><B>pilot valve </B></I><I>- </I>an auxiliary valve which actuates a major relieving device </div> <div> <I><B>pressure containing member (of a pressure reliefdevice) </B></I>- a part which is in actual contact with the</div> <div> pressure media in the protected vessel</div> <div> <I><B>pressure retaining member (of a pressure reliefdevice) </B></I><I>- </I>a part which is stressed due to its function in</div> <div> holding one or more pressure containing members inposition</div> <div> <I><B>rupture disc- </B></I>the pressure containing and pressure sensitive element of a rupture disc device</div> <div> <I><B>rupture disc holder </B></I><I>- </I>the structure which encloses and clamps the rupture disc in position</div> <div> <I><B>seat </B></I>- the pressure containing contact between the fixed and moving portions of the pressure containing</div> <div> elements of a valve</div> <div> <I><B>vacuum support - </B></I>an auxiliary element of a rupture disc device designed to prevent rupture or deformation of the</div> <div> disc due to vacuum or back pressure</div> <bR> <bR> <div> <B>For further assistance or information call (330) 253-4800or email: </B><A HREF="mailto:sales@prdtechnologies.com" TARGET="_top" TITLE="mailto:sales@prdtechnologies.com"><U><B>sales@prdtechnologies.com</B></U></A><A HREF="mailto:sales@prdtechnologies.com" TARGET="_top" TITLE="mailto:sales@prdtechnologies.com"><U> </U></A> </div> </td> </tr></table></body>