6202 Cosasco Disc Coupon · PDF fileWake Frequency Calculations be performed – please...

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COSASCO ® DISC COUPON HOLDER FIXED & ADJUSTABLE MODEL 6202 Fixed Disc Coupon Holder Assembly Mounted in Solid Plug Features Meets NACE MR0175 and MR0103 Material — 316 S.S. As one of several methods of corrosion coupon (alloy specimen) monitoring systems offered by Cosasco ® , Disc Coupon Holder Assemblies offer several inherent advantages. First, there is no need to orient coupons in relation to product flow direction. Second, they offer more exposed surface at the pipeline wall surfaces than strip coupon holder assemblies; and, third, if sized properly, they can offer a means of corrosion coupon monitoring and yet allow pigging operations with no interference. 1. THE FIXED DISC COUPON HOLDER May be sized to position the Disc Coupon at any desired location within the pipe or vessel. 2. THE ADJUSTABLE DISC COUPON HOLDER ASSEMBLY Has an adjustable stem threading within an outer support housing. After determining its desired length, the length setting is locked into position by a set screw aligned with a keyway or kerf. The support housing is 2.75" (7 cm) long and stem travel is from a beginning exposure of 3/8" (9.5mm) up to 13/4" (4.5cm). When used with Cosasco ® 5.25" Standard height Access Fitting mounting end at 3/8" (9.5 mm) into the pipeline OD or wall and thus can accommodate many pipe wall thicknesses with flush mount monitoring (up to its extended limit of travel). All holders are made from two piece construction. Nonwelded holders are available upon request. All Disc Coupon Holder Assemblies attach to the bottom of the Solid Plug Assembly of the Access Fitting Assembly by means of a lefthand threaded nut. When attached, they are securely locked into place by a set screw. The attaching nut replaces the Solid Plug Nut component of the Solid Plug Assembly and also serves as the primary packing retainer. Coupon attachment is by a single flat head machine screwtype with Teflon ® insulation.

Transcript of 6202 Cosasco Disc Coupon · PDF fileWake Frequency Calculations be performed – please...

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COSASCO®

DISC COUPON HOLDER FIXED & ADJUSTABLE

MODEL 6202

 

  

   

Fixed Disc Coupon Holder Assembly Mounted in Solid Plug 

Features

Meets NACE MR0175 and MR0103 Material — 316 S.S.  

As  one  of  several methods  of  corrosion  coupon  (alloy specimen) monitoring systems offered by Cosasco®, Disc Coupon  Holder  Assemblies  offer  several  inherent advantages. First,  there  is no need  to orient coupons  in relation  to  product  flow  direction.  Second,  they  offer more exposed surface at the pipeline wall surfaces than strip  coupon  holder  assemblies;  and,  third,  if  sized properly,  they  can  offer  a means  of  corrosion  coupon monitoring  and  yet  allow  pigging  operations  with  no interference.  1. THE FIXED DISC COUPON HOLDER May be sized to position the Disc Coupon at any desired location within the pipe or vessel.  2. THE ADJUSTABLE DISC COUPON HOLDER ASSEMBLY Has  an  adjustable  stem  threading  within  an  outer support  housing.  After  determining  its  desired  length, the  length setting  is  locked  into position by a set screw aligned with  a  keyway  or  kerf.  The  support  housing  is 

2.75"  (7  cm)  long  and  stem  travel  is  from  a  beginning exposure  of  3/8"  (9.5mm)  up  to  1‐3/4"  (4.5cm). When used with Cosasco® 5.25" Standard height Access Fitting mounting end at 3/8"  (9.5 mm)  into  the pipeline OD or wall  and  thus  can  accommodate  many  pipe  wall thicknesses  with  flush  mount  monitoring  (up  to  its extended limit of travel).   All holders are made from two piece construction.  Non‐welded  holders  are  available  upon  request.  All  Disc Coupon Holder Assemblies attach  to  the bottom of  the Solid  Plug  Assembly  of  the  Access  Fitting  Assembly  by means of a left‐hand threaded nut.     When attached, they are securely  locked  into place by a set screw.  The attaching nut replaces the Solid Plug Nut component of the Solid Plug Assembly and also serves as the primary packing retainer.  Coupon attachment is by a single  flat  head  machine  screw‐type  with  Teflon® insulation.

 

 

 

 

 

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MODEL 6202

 

 

Fixed Disc Coupon Holder Assembly  

Sizing Formula: 

NON‐FLANGE Access Fitting Assemblies 

Flush: (A + Wg + PW) minus (2.815) = Coupon Holder 

Length 

 

FLANGE Access Fitting Assemblies 

Flush: (A + PW + Fg +MF) minus (2.815) = Coupon Holder 

Length 

A = Access Fitting Assembly height Wg = Weld gap (1/16” or 1.6 mm is normal per ANSI          B31.1 1973) Pw = Pipe wall thickness PD = Nominal Pipeline OD IL = Insertion length into pipeline ID Fg = Flange face‐to‐face gap MF = Mating flange dimension from face of flange to OD of pipe 

  Adjustable Disc Coupon Holder Customer adjustable within described parameters. 

 

Dimensions

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MODEL 6200

©Rohrback Cosasco Systems, Inc. All rights reserved  The contents of this publication are presented for information purposes only, and while effort has been made to ensure their accuracy, they are not to be construed as warranties or guarantees, express or implied, regarding the products or services described wherein or their use or applicability. We reserve the right to modify or improve the designs or specifications of our products at any time without notice.  Rohrback  Cosasco  Systems  Corrosion Monitoring  Equipment  is manufactured  and  sold  under  one  or more  of  the  following  US  Patents: 4138878, 4238298, 4338563, 4514681, 4537071, 4587479, 4605626, 4625557, 4755744, 4839580, 4841787, 4882537 5243297 

Cosasco 11841 Smith Avenue Santa Fe Springs, CA 90670, USA Tel: 1‐562‐949‐0123 Email: [email protected] Web Site: www.cosasco.com 

Bulletin #222‐P Rev. Date: 12/03/2015  

Ordering Information Note: For flush devices which are protruding into the line that may experience high velocity process conditions it is recommended that Wake Frequency Calculations be performed – please contact Cosasco representative for further details.   

Model   

6202 6202‐ADJS 6202N 

Disc Coupon Holder Assembly Disc Coupon Holder Assembly Adjustable (3.12" min ‐ 4.88" max) Disc Coupon Holder Assembly non‐welded 

  Code  Length Required 

  XXX  Enter length in inches, for adjustable type enter ADJS 

           

6202  6.00        Example 

6202  ADJS        Example 

 

Unit Weight: Up to 3 inches   1 lb. /.45 kg. 3 ‐ 10 inches   2 lbs. /.90 kg. 10.25 ‐ 20 inches  3 lbs./1.36 kg. 20.25 ‐ 36 inches  5 lbs./2.27 kg.    

Accessories Part No.  Description 

208620  Disc Coupon Holder Insulation Set – Nylon/Teflon consisting of: 

201766  Machine Screw‐type 1/4‐20 x 1.00 – SS 

126285  Disc Coupon Insulation Washer, .665” OD, .25” ID, .198” thick ‐ Teflon® 

201767  Washer ‐ Teflon®