ASME B16.48 Ring Joint Female
Spectacle Blanks - Paddle Blanks - Paddle Spacers
 Spectacle Blank |
A combination of a Paddle Blank
and a Paddle Spacer fabricated, for field convenience, as a single unit. Weight
limitations and the associated difficulty of handling heavy pieces in the
field are the primary considerations in specifying a Spectacle or Figure
8 Blank over separate components. |
Paddle Blank (Photo Not Shown) |
A positive shut-off device normally installed adjacent to, or in conjunction with, a valve. Their purpose is to prevent accidental flow through a pipeline or into a vessel. |
Paddle Spacer (Photo Not Shown) |
ASME B16.48 Designed Paddle Spacers are bored to the outside diameter diameter of pipe and are of the same thickness as the Paddle Blank it replaces. |
Standard Finish: Gasket = 63 AARH finish. Facing = 125 AARH lathe finish
 |
Denotes Required Specifying Information |
|
Product Name / Description (i.e. Spectacle Blank, Paddle Blank, Paddle Spacer) |
| Nominal
Pipeline size (e.g. 10") |
|
|
Adjacent flange class and type (e.g. 150# RF, MSS SP-44 (if using ANSI B16.47,
specify series A or B) |
RJ - For use with Ring Joint flanges.
| Material
of construction (e.g. carbon steel, stainless steel - or it may be specific
e.g. SA516 Gr. 70, SA240 Type 304 S.S.) |
 Denotes Optional
Information |
| Alternate
Gasket Surface/Finish (click
here to see available gasket surface finishes) |
|
| Special Dimensions |
|
| Corrosion
Allowance |
|
| Special marking
or tagging requirements |
|
| Special QA,
traceability or paperwork requirements (e.g. CMTR's) |
|
| Oxygen cleaning
(click here to see Mack Iron cleaning
capabilities) |