Download this page only in PDF Format
Download the Design Options Section in PDF Format
![]() |
Swing Thru |
![]() |
Angle |
Suitable for most applications, this type is furnished as standard. Good for clean or dirty service, any temperature range. Clearance depends upon temperature. (Available in all sizes.) | Clockwise to close is standard. Suitable for minimum leakage where service conditions are clean, and temperature is under 500°F, (Available up to 30 inch sizes.) | ||
![]() |
Metal Step |
![]() |
Tadpole Step |
Clockwise to close is standard. Suitable for minimum leakage requirements above 500°F, provided service conditions are clean. (Available in all sizes.) | Clockwise to close is standard. Suitable for minimum leakage requirements up to 1200°F, depending on various materials available, and provided service conditions are clean. Slightly better shut-off than metal step seat. (Available in sizes starting at 6" and up.) |