ASME COMBINATION CAPACITY FACTORS HOW TO USE THE COMBINATION CAPACITY FACTOR

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1 ASME COMBINATION CAPACITY FACTORS FOR CONDUCTING FLOW TESTS OF RUPTURE DISCS, PRESSURE RELIEF VALVES AND COMBINATIONS THEREOF The following Continental Disc Corporation rupture disc and pressure relief valve combination capacity factors were determined by testing the rupture disc device mounted directly beneath the valve inlet in accordance ASME Pressure Vessel Code, Section VIII, Division I, and certified by The National Board of Boiler and Pressure Vessel Inspectors. The information provided is to be used as a multiplier to make appropriate changes in the ASME rated relieving capacity of the pressure relief valve. It is applicable only to the combination of pressure relief valve and rupture disc designs tested. ASME allows the use of a 0.9 multiplier for those combinations not tested. Capacity factors are not applied to rupture discs installed at the outlet of a pressure relief valve. Continental Disc Corporation maintains an ASME accepted flow lab for conducting flow tests of rupture discs, pressure relief valves, and rupture disc / pressure relief valve combinations. HOW TO USE THE COMBINATION CAPACITY FACTOR To determine the combination capacity of the listed rupture disc/pressure relief valve combinations, the ASME rated capacity of the pressure relief valve is multiplied by the capacity factor for the combination. The factors listed may be used for sizes equal to or larger and pressures equal to or greater than the rupture disc/pressure relief valve combinations tested (except where limited range is indicated). EXAMPLE: 6 Crosby Model JOS-156R8 pressure relief valve a set pressure of 80 and a published relieving capacity of SCFM air. Assume that a rupture disc is required to isolate the inlet side of the valve and a Continental ULTRX of ALLOY C276 material has been selected. To determine the calculated capacity of the rupture disc/pressure relief valve combination: 1. Refer to the ULTRX s tested. 2. Select the largest size less than or equal to the 6 size. Use the 3 size for this example. 3. Select the desired rupture disc material and pressure range from the chart. For this example, use ALLOY C276 for 60 plus. 4. From the chart, find the factor in column Crosby JOS/JBS. The ASME rated relieving capacity of the Crosby type JOS valve and ULTRX combination is: x = SCFM

2 ASME COMBINATION CAPACITY FACTORS DATASHEET // PAGE 2 ULTRX ULTRX holder or MINTRX MINTRX holder or STAR X STAR X holder SS 60 PLUS ALLOY C PLUS ALLOY PLUS ALLOY PLUS Nickel 60 PLUS Nickel/Fluoropolymer Liner 60 PLUS SS SS 60 PLUS SS/Fluoropolymer Liner 30 PLUS ALLOY C ALLOY C PLUS ALLOY ALLOY PLUS ALLOY ALLOY PLUS Nickel Nickel 60 PLUS Nickel/Fluoropolymer Liner 30 PLUS Nickel/Fluoropolymer Liner 60 PLUS Tantalum 30 PLUS SS SS SS 60 PLUS SS/Fluoropolymer Liner SS/Fluoropolymer Liner 30 PLUS ALLOY C ALLOY C ALLOY C PLUS ALLOY ALLOY ALLOY PLUS ALLOY ALLOY ALLOY PLUS Nickel Nickel Nickel 60 PLUS Nickel/Fluoropolymer Liner Nickel/Fluoropolymer Liner 30 PLUS Nickel/FluoropolymerLiner 60 PLUS 0.984

3 ASME COMBINATION CAPACITY FACTORS DATASHEET // PAGE 3 ZAP Rupture Disc ZAP SS SS 75 PLUS ALLOY 600/Fluoropolymer 60 PLUS ALLOY PLUS ALLOY 400/Fluoropolymer Liner 60 PLUS ALLOY ALLOY PLUS Nickel/Fluoropolymer Liner 60 PLUS Nickel Nickel 60 PLUS SS SS SS SS 75 PLUS ALLOY 600/Fluoropolymer Liner 60 PLUS ALLOY ALLOY PLUS ALLOY ALLOY ALLOY ALLOY PLUS Nickel Nickel Nickel 60 PLUS SS SS SS SS SS SS 75 PLUS

4 ASME COMBINATION CAPACITY FACTORS DATASHEET // PAGE 4 ZAP ZAP continued 3.0 ALLOY 600/Fluoropolymer Liner 60 PLUS ALLOY ALLOY ALLOY ALLOY PLUS ALLOY 400/Fluoropolymer Liner 60 PLUS ALLOY ALLOY ALLOY ALLOY ALLOY ALLOY PLUS Nickel/Fluoropolymer Liner Nickel/Fluoropolymer Liner 60 PLUS Nickel Nickel Nickel Nickel Nickel 60 PLUS KBA KBA 1.0 ALLOY PLUS ALLOY PLUS Nickel 150 PLUS MICRO X UNISERT SS 80 PLUS ALLOY PLUS ALLOY ALLOY PLUS Nickel Nickel 150 PLUS 0.990

5 ASME COMBINATION CAPACITY FACTORS DATASHEET // PAGE 5 CDC Light Lip 30 Seat Light Lip 1.0 ALLOY 600/Fluoropolymer 60 PLUS ALLOY 400/Fluoropolymer 60 PLUS SS/Fluoropolymer 30 PLUS ALLOY 600/Fluoropolymer ALLOY 600/Fluoropolymer 60 PLUS ALLOY 400/Fluoropolymer ALLOY 400/Fluoropolymer 60 PLUS Nickel/Fluoropolymer 30 PLUS SS/Fluoropolymer SS/Fluoropolymer 30 PLUS ALLOY 600/Fluoropolymer ALLOY 600/Fluoropolymer ALLOY 600/Fluoropolymer 60 PLUS ALLOY 400/Fluoropolymer ALLOY 400/Fluoropolymer ALLOY 400/Fluoropolymer 60 PLUS Nickel/Fluoropolymer Nickel/Fluoropolymer 30 PLUS

6 ASME COMBINATION CAPACITY FACTORS DATASHEET // PAGE 6 CDCV Light Lip 30 Seat Light Lip SS/Fluoropolymer/316 SS 60 PLUS ALLOY C276/Fluoropolymer/ALLOY C PLUS ALLOY 600/Fluoropolymer/ALLOY PLUS ALLOY 400/Fluoropolymer/ALLOY PLUS Nickel/Fluoropolymer/Nickel 60 PLUS SS/Fluoropolymer/316 SS ALLOY C276/Fluoropolymer/ALLOY C PLUS ALLOY 600/Fluoropolymer/ALLOY PLUS ALLOY 400/Fluoropolymer/ALLOY Nickel/Fluoropolymer/Nickel SS/Fluoropolymer/316 SS SS/Fluoropolymer/316 SS SS/Fluoropolymer/316 SS SS/Fluoropolymer/316 SS 60 PLUS ALLOY C276/Fluoropolymer/ALLOY C PLUS ALLOY 600/Fluoropolymer/ALLOY ALLOY 600/Fluoropolymer/ALLOY PLUS ALLOY 400/Fluoropolymer/ALLOY ALLOY 400/Fluoropolymer/ALLOY ALLOY 400/Fluoropolymer/ALLOY ALLOY 400/Fluoropolymer/ALLOY PLUS Nickel/Fluoropolymer/Nickel Nickel/Fluoropolymer/Nickel Nickel/Fluoropolymer/Nickel 60 PLUS

7 ASME COMBINATION CAPACITY FACTORS DATASHEET // PAGE 7 CDC Flat Seat UNISERT 3.0 ALLOY 400/Fluoropolymer 15 PLUS CDCV Flat Seat UNISERT SS/Fluoropolymer/316 SS 60 PLUS ALLOY C276/Fluoropolymer/ALLOY C PLUS SS/Fluoropolymer/316 SS SS/Fluoropolymer/316 SS 60 PLUS ALLOY C276/Fluoropolymer/ALLOY C ALLOY C276/Fluoropolymer/ALLOY C PLUS SS/Fluoropolymer/316 SS SS/Fluoropolymer/316 SS SS/Fluoropolymer/316 SS 60 PLUS ALLOY C276/Fluoropolymer/ALLOY C ALLOY C276/Fluoropolymer/ALLOY C ALLOY C276/Fluoropolymer/ALLOY C PLUS 0.983

8 ASME COMBINATION CAPACITY FACTORS DATASHEET // PAGE 8 ASME Code Symbol Stamp Available When Specified Pressure Equipment Directive Available When Specified HEADQUARTERS // 3160 W. Heartland Drive Liberty, MO USA Ph (816) Fax (816) sales@contdisc.com contdisc.com THE NETHERLANDS Energieweg NJ Zoeterwoude-Rijndijk The Netherlands Ph +(31) Fax +(31) cdcnl@contdisc.com CHINA Room 910, Tower B, COFCO Plaza No. 8 JianGuoMenNei Avenue Beijing (100005), P.R. China Ph +(86) Fax +(86) cdcchina@contdisc.com INDIA 423/P/11, Mahagujarat Industrial Estate, Moraiya,Sarkhej-Bavla Road, Ahmedabad (GJ) INDIA Ph +(91) Fax +(86) gcmpl@contdisc.com Continental Disc Corporation reserves the right to alter the information in this publication out notice. // 2014 Continental Disc Corporation Reproduction out written permission is prohibited. PRINTED IN U.S.A. LIT1151 TMR // 1214

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