Accurate gas samples with the GSS-4PM Composite Gas Sampler

The Welker GSS-4PM Composite Gas Sampler extracts a sample from the flowing product in the pipeline and uses positive displacement to capture a representative sample.


GSS-4PM Features

  • Designed to collect a representative composite sample
  • Actuated by regulated pipeline pressure or auxiliary pneumatic supply
  • Vanishing Chamber™ collection cup
  • Self-purging system
  • Easy to install

GSS-4PM Specifications

Technical Data
Materials Of Construction
316/316L Stainless Steel
Seal Material
Pipeline Connection
3/4″ MNPT
Outlet Connection
1/4″ FNPT
Collection Cup
Viton® Vanishing Chamber
Relief Type
Inline Relief
Insertion Length
Sample Volume
0.22 cc
Integrated Bypass Manifold with Built-in Valve
Diaphragm-Operated Pump
Operating Pressure
2160 psig MAOP @ -20 °F to 120 °F
Industry Standard
Complies with API 14.1, GPA 2166, and ISO 10715