Welker Probes

SP Sample Probe

Spot sampling or composite sampling. Liquid or gas. The Welker SP Sample Probe can do it all. Extending into the center third of the pipeline, the probe extracts the most representative sample for accurate analysis.

IRA-4SS

The Welker IRA-4SS Probe Regulator is designed to regulate a gas sample stream to an analyzer without interrupting pipeline flow. With AI Control™, the probe automatically inserts and retracts using pipeline pressure.

IRD-4

The Welker Original IRD Probe Regulator delivers a continuous supply of representative samples to an analyzer at the appropriate pressure for real-time natural gas analysis of high-volume lines.

Solid Probe

Welker’s Solid SP-2 Sample Probe is purposefully robust. Machined from a single piece of 316/316L stainless steel bar, it is strong enough to withstand your process conditions. Its seamless construction means there are no welds to make it vulnerable to corrosive attack.

SP-DP

Designed for use with injection odorizers, Welker’s diffusing probe allows for rapid odorant dispersal across the full diameter of the pipeline, ensuring uniform odorization, even during times of variable flow.

Pitot Probe

Need a fast loop for your sampling equipment but don’t have a downstream pressure drop for a return probe? The 2-in-1 design of the Welker Pitot Probe creates the pressure drop for you in the convenience of one tap.

Mole Sieve Probe

Prevent moisture or mercury from damaging downstream equipment and shutting down your process–detect breakthrough in your molecular sieve adsorbent bed by sampling the gas stream with Welker’s Molecular Sieve Probe.

The Molecular Sieve Probe mounts directly to a mating flange on the bed and extends across the inner diameter of your dehydration unit (DHU) or mercury removal unit (MRU) to sample natural gas from the full width of the bed. The water or mercury content of the samples is monitored by the connected downstream analyzer to alert the operator of rising levels and the need for molecular sieve regeneration.

Multiple Molecular Sieve Probes can be installed in a DHU or MRU in a multilevel configuration to monitor molecular sieve deactivation across the height of the bed.

SP-2 Standard Probe

• Permanently fixed probe (specify length desired)
• 316 stainless steel construction
• ½”, ¾” or 1″ NPT pipeline connection standard, other sizes available
• Complete with large port outlet valve
• Available without outlet valve (model SP-1)
• ¼” NPT outlet standard, other sizes available

AP-3 Adjustable Probe

• Adjustable probe length (specify maximum length desired, insertion length permanently determined upon initial installation)
• May be manually inserted against line pressures up to 1,000 psig (69 bar)
• Easily retracted to allow passage of pigs or other pipeline equipment
• 316 stainless steel construction
• ½”, ¾” or 1″ NPT pipeline connection standard, other sizes available
• Complete with large port outlet valve
• ¼” NPT ports standard, other sizes available

AIP-1 Automatic Insertion Probe

• Automatic insertion feature utilizes pipeline pressure to automatically insert the probe into a pressurized line
• Automatic retraction from a pressurized line allows the passage of pigs or other pipeline equipment
• May be retracted and completely removed from a pressurized line with the use of an isolation valve
• 316 stainless steel construction
• 1″ NPT pipeline connection standard, other sizes available
• Complete with large ported outlet valve
• ¼” NPT ports standard, other sizes available
• 2,160 psig (149 bar) maximum working pressure
• Higher pressures available upon request

PP-2 Pitot Probe

• Outlet and return ports provided for hot-loop operation
• Permanently fixed probe (specify length desired)
• 316 stainless steel construction
• 1″ NPT pipeline connection standard, other sizes available
• Complete with full open outlet and return valves
• Available without valves (model PP-1)
• ¼” NPT outlet and return standard, other sizes available

PP-2FX Flanged Pitot Probe

• Flanged pipeline connection available in any type flange, any size, in any ANSI rating
• Outlet and return ports provided for hot-loop operation
• Outlet and return ports available in any NPT size or flanged
• Probe designs available for extremely high velocity flowing streams
• Maximum working pressure per your specifications
• 316 stainless steel construction standard, other materials available

AIPP-1 Automatic Insertion Pitot Probe

• Automatic insertion feature utilizes pipeline pressure to automatically insert probe into a pressurized line
• Automatic retraction from pressurized line allows the passage of pigs or other pipeline equipment
• May be retracted and completely removed from a pressurized line with the use of an isolation valve
• Outlet and return ports provided for hot loop operation
• 316 stainless steel construction standard, other materials available
• 1″ NPT pipeline connection standard, other sizes available
• Complete with full open outlet and return valves
• ¼” NPT outlet and return standard, other sizes available
• 2,160 psig (149 bar) maximum working pressure
• Higher pressures available upon request

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