_menuCloseDelay=500 // The time delay for menus to remain visible on mouse out
_menuOpenDelay=150 // The time delay before menus open on mouse over
_followSpeed=5 // Follow scrolling speed
_followRate=40 // Follow scrolling Rate
_subOffsetTop=10 // Sub menu top offset
_subOffsetLeft=-10 // Sub menu left offset
_scrollAmount=3 // Only needed for Netscape 4.x
_scrollDelay=20 // Only needed for Netcsape 4.x
with(menuStyle=new mm_style()){
onbgcolor="#8B5736";
oncolor="#FFFFFF";
offbgcolor="#FAF8D7";
offcolor="#000000";
bordercolor="#296488";
borderstyle="solid";
borderwidth=1;
onborder="1px solid #aaaaaa";
separatorcolor="#2D729D";
separatorsize="0";
padding=5;
fontsize="12px";
fontstyle="normal";
fontweight="bold";
fontfamily="Verdana, Tahoma, Arial";
pagecolor="#FFFFFF";
pagebgcolor="#999999";
headercolor="#000000";
headerbgcolor="#ffffff";
subimage="arrow.gif";
subimagepadding="2";
overfilter='randomdissolve(duration=0.5)';
//outfilter="Fade(duration=0.4)";
outfilter='randomdissolve(duration=0.5)';
}
with(milonic=new menuname("vane")){
style=menuStyle;
top=320;
left=690;
alwaysvisible=1;
followscroll="1";
orientation="horizontal";
aI("text=F. Casing;showmenu=casing_menu1;");
}
with(milonic=new menuname("casing_menu1")){
style=menuStyle;
overflow="scroll";
aI("text=The casing is often called the volute.
The volute shape is typically where the space between
the impeller and the casing wall increases as
you get towards the discharge. This helps reduce the turbulence
of the fluid leaving the impeller tips. The casing sometime has fixed vanes
called diffuser vanes which further help reduce the turbulence. A special design
called double volute effectively reduces the radial thrust. Pump casings
are built to certain standards, some pump manufacturers have their own
standards but in North America they mostly follow the standards of the
Hydraulic institute. A standard called ANSI B31.3 was devised to promote
intercheangablity of parts between manufacturers.
The API standard was devised to provide more robust casings that were required
in the petro-chemical industry.");
aI("text=See double volute;offbgcolor=red;offcolor=white;url=http://www.pumpfundamentals.com/pump_glossary.htm#gl171;");
aI("text=See diffuser casing;offbgcolor=red;offcolor=white;url=http://www.pumpfundamentals.com/pump_glossary.htm#gl151;");
}
drawMenus();