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.

CENTER ONE-THIRD
LOCATION MATTERS
Placing the sample probe in the center 1/3 of the pipeline is a significant factor in gathering a representative sample. Avoid placing the sampler in turbulent spots such as pipe elbows and traps. We can help you find the best installation point for your sampler. We can even install it for you. Just give us a call.
VANISHING CHAMBER™
COLLECTION CUP
The Vanishing Chamber™ collection cup utilizes positive displacement to capture and push the complete sample to the sample container.
FRESH SAMPLE
PURGING SYSTEM
The unique self-purging system ensures a fresh sample with every actuation.

SPECIFICATIONS
GSS-4PM COMPOSITE GAS SAMPLER
GSS-4PM | |
---|---|
Materials of Construction | 316/316L Stainless Steel |
Seal Material | Viton® |
Pipeline Connection | 3/4″ MNPT |
Outlet Connection | 1/4″ FNPT |
Collection Cup | Viton® Vanishing Chamber™ |
Relief Type | Inline Relief |
Insertion Length | 8″ |
Sample Volume | 0.22 cc |
Bypass | Integrated Bypass Manifold with Built-in Valve |
Operation | Diaphragm-Operated Pump |
Operating Pressure | 2160 psig MAOP @ -20 °F to 120 °F |
Industry Standards | Complies with API 14.1, GPA 2166, and ISO 10715 |