281.491.2331 13839 West Bellfort Street Sugar Land, TX
281.491.2331 13839 West Bellfort Street Sugar Land, TX
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CP-2GM (Calibration)

The Welker CP-2GM Constant Pressure Calibration Cylinder is the most effective solution for containing and maintaining calibration standards. Our cylinder provides safety, reliability, and convenience to calibration standards used in laboratories world wide.

CP-2GM Calibration Standard

Calibration Standard

Maintains the integrity of the calibration standard.


Gravity Mixer®

Internal Gravity Mixer™ provides a proper sample mix for accurate lab analysis.

CP-2GM Gravity Mixer

Convenient Design

Our DOT approved constant pressure cylinders feature an easy-to-handle compact design, making shipping cost-effective and requires minimal storage space in a laboratory.


CP-2GM Calibration Cylinder
Materials of Construction316/316L Stainless Steel
Seal MaterialKalrez®
Sample Inlet Connections1/4" FNPT
Sample Outlet Connections1/4" FNPT
Cylinder Volume1000 cc
Cylinder Mixer TypeGravity Mixer™
Cylinder AccessoriesRupture Disc, Reliefs, Valves, and Gauges
Operating Pressure1800 psig MAOP @ -20 °F to 120 °F
Transport ApprovalsDOT-SP 7657
Transport Canada SU 4781*
Industry StandardsComplies with API 8.1, API 14.1, ASTM D1265, ASTM D3700, ASTM D4057, GPA 2166, GPA 2174,
ISO 3170, ISO 4257, and ISO 10715

*Transport Canada SU4781 available upon request. DOT-SP 76567 is standard.

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