ASME B16.48 Ring Joint Male
Spectacle Blanks - Paddle Blanks - Paddle Spacers
RJ-M Spec Blank pic |
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. |
RJ-M 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. |
RJ-M Paddle Spacer pic (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) |