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Liquid and Gas Sampling  

Sample Valve Configuration

Our sample valves are suitable for chemicals either in liquid or gas state. This includes many of the 140 chemicals found in OSHA’s “List of Highly Hazardous Chemicals, Toxics, and Reactives” and/or chemicals that meet the criteria for ASME B31.3 Category M Fluid Service [Size 87 KB].

To suit most process conditions and design, we offer three types of sample valves, each with numerous configurations and a multitude of options:

Three Types of Sample Valves

Type Description Pros Cons
In-line Sample Valve The valve is fitted directly in the process line or on a by-pass. A constant flow through the valve guarantees a directly representative sample
  • Directly representative sample
  • Liquid / gas flow required (re-circulation loop, process line)
Lateral Sample Valve The valve is fitted on the side or bottom of a reactor or on the side of a larger pipeline.
  • By-pass not required for large pipes
  • Reactor sampling without re-circulation loop
  • Dead space needs to be purged or flushed to guarantee a representative sample
Top of reactor Sample System Acts as a re-circulation loop
  • Works under pressure as well as vacuum
  • Directly representative sample
  • Max viscosity = 2,000 cP

The first step to select a BIAR Sample Valve is to identify where it will be fitted in the process line. Once this is defined, technical specification such as sampling temperature / pressure, size, class and product properties can be outlined and this normally corresponds to the Piping & Instrumentation Diagram (P&ID).

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