Introducing Continental DiscCorporations newest addition to itsfull range of rupture disc holders:

The RHI Holder is a flat seat rupture discholder which provides improved rupture discsealing capabilities. The minimal overall heightof the RHI Holder allows installation in tightpiping arrangements, and retrofit into manyexisting installations.

2-3309

RHI Flat Seat Holder Features include: Available in standard sizes from 1" through 8" (25mm - 200mm) Available in standard pressure classes from 150# through 1500# ANSI

(PN 10/16 - PN 250 DIN) Standard materials of 316 Stainless Steel, Carbon Steel, Monel*, and

Hastelloy C** Alignment pins, which provide positive rupture disc orientation J-Hook, as standard, to insure positive holder orientation in the system Tapered flat seat design, for a positive seal Designed to accommodate MICRO X and Composite (FS) rupture discs Holder can accommodate a 1/4" gauge tap in the outlet. Larger taps are

optional with an increase in outlet height Tested performance; the RHI design has been extensively tested in our

ASME-Accepted Flow Test Laboratory, and proven not to leak Design allows retrofit into many existing installations, without concern for

assembly height

One HolderBut VariableRupture Disc Design Options

The RHI Holder is available in a widerange of sizes and materials, and isdesigned to house either the MICRO XRupture Disc (shown above) or theComposite Flat Seat Rupture Disc.These non-fragmenting designed rupturediscs provide a wide choice of burstratings, from the low pressures of theComposite Rupture Disc through thehigher pressures of the scored MICRO XRupture Disc.

* Monel is a registered trademark of the Inco family of companies.** Hastelloy is a registered trademark of Haynes International.

RHIFlat SeatHolder

Assembly

DIMENSIONS AND WEIGHTS

Table 1 RHI Flat Seat Holder Dimensions and Weights

2

ANSI DINOutside Diameter Outside Diameter Height Weight

Class (inch / mm) Class (mm) inch / mm lb / kg150 2.50 / 63,5 1.50 / 38 1.5 / 0,7

300 / 600 2.75 / 69,9 10 / 40 69,9 1.50 / 38 1.9 / 0,9900 / 1500 3.00 / 76,2 1.50 / 38 2.4 / 1,1

64 / 250 82,0 1.50 / 38 2.9 / 1,3150 3.25 / 82,6 1.50 / 38 2.4 / 1,1

300 / 600 3.63 / 92,2 10 / 40 92,2 1.50 / 38 3.3 / 1,5900 / 1500 3.75 / 95,3 1.50 / 38 3.6 / 1,6

64 / 160 102,0 1.50 / 38 4.3 / 2,0250 108,0 1.50 / 38 4.9 / 2,2

150 4.00 / 101,6 1.50 / 38 3.3 / 1,5300 / 600 4.25 / 108,0 10 / 40 108,0 1.50 / 38 4.0 / 1,8

64 111,0 1.50 / 38 4.2 / 1,9100 / 160 118,0 1.50 / 38 5.2 / 2,4

250 123,0 1.50 / 38 5.8 / 2,6900 / 1500 5.50 / 139,7 1.50 / 38 8.1 / 3,7

150 5.25 / 133,4 1.50 / 38 5.1 / 2,310 / 40 142,0 1.50 / 38 6.4 / 2,9

300 / 600 5.75 / 146,1 64 146,1 1.50 / 38 7.0 / 3,2100 / 160 153,0 1.50 / 38 8.1 / 3,7

900 6.50 / 165,1 1.50 / 38 10 / 4,5250 170,0 1.50 / 38 11 / 5,0

1500 6.75 / 171,5 1.50 / 38 11 / 5,010 / 16 162,0 1.50 / 38 6.8 / 3,125 / 40 168,0 1.50 / 38 7.8 / 3,5

150 6.75 / 171,5 1.50 / 38 8.4 / 3,864 173,0 1.50 / 38 8.7 / 3,9

300 7.00 / 177,8 1.50 / 38 9.6 / 4,4100 / 160 180,0 1.50 / 38 10 / 4,5

600 7.50 / 190,5 1.50 / 38 12 / 5,4250 202,0 1.50 / 38 14 / 6,4

900 8.00 / 203,2 1.50 / 38 14 / 6,41500 8.13 / 206,5 1.50 / 38 15 / 6,8

10 / 16 217,0 2.00 / 51 14 / 6,4150 8.63 / 219,2 2.00 / 51 14 / 6,4

25 / 40 223,0 2.00 / 51 15 / 6,864 247,0 2.00 / 51 23 / 10

300 9.75 / 247,7 2.00 / 51 24 / 11100 / 160 257,0 2.00 / 51 27 / 12

600 10.38 / 263,7 2.00 / 51 29 / 13900 11.25 / 285,8 2.00 / 51 38 / 17

250 284,0 2.00 / 51 37 / 171500 11.00 / 279,4 2.00 / 51 35 / 16

10 / 16 272,0 2.25 / 57 21 / 9,5150 10.88 / 276,4 2.25 / 57 23 / 10

25 283,0 2.25 / 57 26 / 1240 290,0 2.25 / 57 29 / 13

300 12.00 / 304,8 2.25 / 57 36 / 1664 309,0 2.25 / 57 38 / 17

600 12.50 / 317,5 2.25 / 57 42 / 19100 / 160 324,0 2.25 / 57 46 / 21

900 14.00 / 355,6 2.25 / 57 62 / 281500 13.75 / 349,3 2.25 / 57 59 / 27

250 358,0 2.25 / 57 64 / 29

Rupture DiscNominal

Size

1"25 mm

1-1/2"40 mm

2"50 mm

3"80 mm

4"100 mm

6"150 mm

8"200 mm

Ordering InformationTo facilitate manufacturing and shippingof your RHI Rupture Disc Assembly, thefollowing information should be suppliedwhen ordering:

HOLDER SPECIFICATIONS Quantity ________ Size ________ Bolting class (ANSI, DIN) Material (inlet, outlet) Options: gasket facing, gauge tap,

coatings Accessories: nipple/tee, excess flow

valve, pressure gauge, studs andnuts, eyebolts, jackscrews

RUPTURE DISC SPECIFICATIONS Quantity ________ Size ________ Type__________________________ Options: linings, coatings, rings,

gaskets, vacuum support Materials ______________________ Specified pressure_______________ Specified temperature ____________ Manufacturing range:

Standard, 1/2, 3/4 or min/max Previous manufacturing number

(if known)______________________QUALITY ASSURANCE / DOCUMENTATION ASME Code tests ( Code Stamp

per Section VIII) _______________ Special cleaning ________________ Special packaging ______________ Special tagging _________________ Temperature testing _____________ Material test reports _____________ Other _________________________

OPERATING SPECIFICATIONS Maximum allowable working pressure

(vessel M.A.W.P.) _______________ Operating pressure ______________ Operating temperature ___________ Vacuum / backpressure ___________ Cycle conditions ________________ Flow rate required _______________ Media ________________________ Molecular weight/specific gravity

______________________________

Use under relief valves ___________

For more specific information regardingapplicable rupture discs and B.D.I. AlarmSystem, consult your Continental Discrepresentative or the factory.

J-Hook and Alignment PinsThe RHI Holder offers two alignment

pins in the holder outlet, which helpassure correct rupture disc orientationinto the holder. The holder is alsoequipped with a J-Hook for properindexing and flow orientation betweenthe companion flanges. Both the J-Hookand alignment pins are provided on allRHI Holders.

Tagging

The RHI Holder is supplied with apermanently attached stainless steelnameplate with arrows that indicate flowdirection. In addition, the Composite andMICRO X rupture discs are supplied witha three-dimensionalflow direction tag.Directional arrowson both the tag andnameplate provide ameans to visuallyverify the rupturedisc assembly isproperly oriented inyour system.

A customers pertinent identificationinformation (specified at time of order)will be stamped on the rupture disc tagsand holder tags.

Application FlexibilityIn the event that there is a change in

system operating requirements, theflexibility of the RHI Assembly permitsutilization of various rupture disc types inorder to meet a wide range of burstpressures. The Composite Flat SeatRupture Disc may be selected forhandling very low burst pressures (downto 3 psig / 0,20 barg, depending on size),and the MICRO X Rupture Disc can beutilized for higher pressures (up to 3600psig / 248,28 barg, depending on size).Thus, the type of rupture disc can bechanged, rather than replacing theexisting holder.

To determine minimum / maximumburst ratings for MICRO X or Composite(FS) rupture discs, refer to UNISERTAssembly bulletin no. 2-2203-2.

* B.D.I. Alarm System incorporates United States patent no. Re. 34,308 and 4,408,194; Australia patent no. 539415;Canada patent no. 1199990; Germany patent no. 3174227.0; Japan patent no. 2032464;Belgium, France and United Kingdom patent no. EP 0 033 867.

** Teflon is a registered trademark of the DuPont Corporation.

3

B.D.I.* Alarm System

INSTALLATION FEATURES

In situations where it is important forimmediate notification of pressure relief,Continental's patented B.D.I. (Burst Disc Indicator) Alarm System can be used. Compatible with the MICRO X and Composite Flat Seat rupture discs, the Universal B.D.I. Alarm is composed of copper conductors adhered to a Teflon** membrane and assembledbetween non-asbestos gaskets. As therupture disc bursts, the alarm strip issevered, triggering an electrical signalwhich translates into audio and/or visualwarning signals actuated through an

alarm monitor. The Continental DiscB.D.I. Alarm Monitor is available withFactory Mutual approval, intrinsically safeoutputs, and computer compatibility.For more information about theContinental Disc B.D.I. Alarm System,refer to bulletin no. 5-7701-5.

Continental Disc Corporation has representatives located throughout the world.Contact the C.D.C. office nearest you for the authorized representative in your area.

CORPORATE HEADQUARTERS

Continental Disc Corporation 3160 W. Heartland DriveLiberty, Missouri 64068-3385 USA

Phone: (816) 792-1500FAX: (816) 792-2277 / 5447E-mail: pressure@contdisc.comWebsite: www.contdisc.com

THE NETHERLANDS

Continental Disc Corporation P.O. Box 172 2394 ZH Hazerswoude-RijndijkThe Netherlands

Phone: (0) 71-5412221 FAX: (0) 71-5414361E-mail: cdcnl@contdisc.com

UNITED KINGDOM

Continental Disc UK Ltd.Unit C, The Business CentreFaringdon Avenue, Harold Hill, RomfordEssex RM3 8ENUnited Kingdom

Phone: (0) 1708-386444FAX: (0) 1708-386486E-mail: cduk@contdisc.com

Continental Disc Corporation reserves the right to alter the information in this publication without notice. Printed in U.S.A.Reproduction without written permission prohibited. 1997 - 2001 Continental Disc Corporation 1001PDF

GERMANY

Continental Disc Deutschland GmbHPostfach 1310D-41337 KorschenbroichGermany

Phone: (0) 2161-642021FAX: (0) 2161-64766E-mail: cdd@contdisc.com

Pressure Equipment DirectiveAvailable When Specified

China Quality LicenseAvailable When Specified

ASME Code Symbol StampAvailable When Specified