SIZE OF MANIFOLD REDUCERS AND BLANKS- ANSI, BS, JIS, KS- CLASS-- CAPT AJIT VADAKAYIL

Something all at sea gets stuck with--  Chief officers  have to go running with a vernier to measure PCD and count 'em holes.


A03153  Thu, 22 May XXX 14:49
From: XXXX - MASTER
Date: Thursday, May 22, XXX 2:12 PM Msg: A03153-53892
Path: \XXXX - MASTER\S E N T  B O X####
Sub : XXX - Voyage 34-- ASA BOOM

dear XXX,

unless i am wrong -- there is nothing called ASA / BOOM.

instead it could be ANSI / CLASS#

on all chemical tankers you usually find ANSI B16.5 (American National
Standards Institute) --class 150# flanges.

other standards are used, e.g.
      - british imperial flanges BS 10,
      - metric flanges SABS 1123, BS 4504, DIN 2501,
      - japanese and korean flanges JIS-B-2212, JIS-B-2214, KS-B-150

the following tables provide flange dimensions, diameters and drillings
for the most common sizes and ratings.

PROFORMA:  REDUCER INCH / NO OF HOLE/ PCD IN MM

16" INCH/ 16 HOLES/ 540MM PCD
12"/ 12/ 430MM
10"/ 12/ 360MM
8"/ 8/ 300MM
6"/ 8/ 240MM
4"/ 8/ 170MM

      
            ANSI class 150# ( INCH STUFF )

           PROFORMA:  Pipe---- PCD---No. of Bolts---Bolt Size---Flange OD

            1/2"----2 3/8"----4 nos---1/2"---3 1/2"
            1"----3 1/8"----4 nos---1/2"---4 1/4"
            2"----4 3/4"----4 nos---5/8"---6"
            4"----7 1/2"----8 nos---5/8"---9"
            6"----9 1/2"----8 nos---3/4"---11"
            8"----11 3/4"----8 nos---3/4"---13 1/2"
            10"----14 1/4"----12 nos---7/8"---16"
            12"----17"----12 nos---7/8"---19"
            14"----18 3/4"----12 nos---1"---21"
            16" --16 HOLES --540 MM PCD

keep this safely with you.

brgds
capt ajit vadakayil

MASTER / XXX
"much more- with much less"
..

CAPT AJIT VADAKAYIL
..