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Model SR3000

Low Pressure Adjustable Coupon Insertion System

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Model SR3000 coupon insertion system is an adjustable unit commonly used in the water treating industry. The system is designed to mount onto a 1" piping system, but can easily be adapted to fit your specific requirements. The system consists of an insertion rod with a coupon adapter. The standard assembly is available with 3/4" or 1" NPT threads on the mounting plug. A safety cable and safety nut are also provided to prevent blowout. Several coupon holders and lengths are available.

Note: Since the adjustable mounting plug on the SR3000 is not a packing gland, some system leakage may occur if retracted or inserted into a pressurized system. Therefore, this model is suggested for use only in non-hazardous systems.

*The insertion length (I.L.) shown here is based on a standard Metal Samples Corrosion Monitoring Systems part #CO118 coupon and may vary for other coupons depending on the coupon length and hole location.


Probe Body - 316 Stainless Steel
Temperature Rating - 100° F
Pressure Rating - 125 PSI / 8.5 Bar
Mounting - 3/4" or 1" NPT

Std. Length I.L. (Max)
18" 16.5"
24" 22.5"
30" 28.5"
36" 34.5"
42" 40.5"

SR3000 Ordering Information

SR32 - Low Pressure Adjustable Coupon Insertion System with 3/4" NPT
SR33 - Low Pressure Adjustable Coupon Insertion System with 1" NPT
  Insertion Rod & Mounting Material
22 - 316
44 - C276
  Coupon Options
010 - Fits P/N CO100
030 - Fits P/N CO118
18 - 16.5 inches max. insertion length
24 - 22.5 inches max. insertion length
30 - 28.5 inches max. insertion length
36 - 34.5 inches max. insertion length
42 - 40.5 inches max. insertion length
Coupon Adapter and Insulators
1 - Coupon adapter same material as rod, Teflon® insulators
2 - Teflon® coupon adapter, Teflon® insulators
4 - Coupon adapter same material as rod, nylon insulators (standard)
5 - Nylon coupon adapter, nylon insulators
Your Part Number



This list represents our most common options.  Many other sizes, alloys, and options are available.
Please contact your Metal Samples sales representative if you do not see what you're looking for.

Teflon® is a registered trademark of DuPont.


Metal Samples Company

P.O. Box 8
152 Metal Samples Rd.
Munford, AL 36268

: (256) 358-4202
Fax: (256) 358-4515

E-mail: msc@alspi.com

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Metal Samples Company is a division of Alabama Specialty Products, Inc. - Copyright © 2024