Gas Drilling Rig at Sunset

WIKA’s hammer union pressure transmitter has all-welded construction, Inconel® wetted parts, and protected electrical connector for long-term stability and enhanced resistance to shock and vibration. These and other features make it the ideal solution for measuring process pressure in drilling and well-servicing applications.

Hammer Union Pressure Transmitter

A nut with three wings, a hammer union is a robust line connector with two joints.

A hammer union is a robust line connector comprising two joints and a nut with three protrusions, or wings. The nut is tightened or loosened by striking the wings with a hammer – thus the connector’s name. This type of fitting allows quick assembly and dismantling of complex pipe routings, which is why they’re so widely used in oil and gas applications, including:

  • Drilling
  • Mud pumps/mud logging
  • Hydraulic fracturing(fracking)
  • Cementing
  • Well stimulation
  • Choke & kill
  • Coiled tubing
  • In blowout preventers (BOP)

Attached directly into a hammer union “T” connected to the piping, a hammer union pressure transducer measures the process pressure inside the assembly. As such, the device needs to be able to withstand the high pressures, shocks, vibrations, and other harsh conditions found in upstream O&G applications.  

A Sturdier Hammer Union Pressure Transmitter by WIKA

Hammer Union Pressure Transmitter

Model C9-6120 hammer union pressure transmitter by tecsis, a division of the WIKA Group

Tecsis, a division of the WIKA Group, produces an extremely rugged hammer union pressure transmitterthat’s built to last while providing accurate process pressure measurements.

Some manufacturers assemble their pressure transducers with screws, which may not hold up when exposed to the extremely high pressures found in many oil and gas processes. For that reason, WIKA’s hammer union pressure transmitter has a fully welded body assembly. The stainless steel electrical connector is welded in a recessed housing and has a removable cage – also stainless steel – to further protect it from shock and vibration. All wetted parts are made of Inconel® X-750 to withstand sour, harsh media, and mechanical stress.

This sturdy pressure instrument features several standard and custom pressuring measuring ranges, from 0–5,000 psi to 0–20,000 psi. It has adjustable zero and span, and an impressive accuracy of 0.25% FS even under the harshest environmental conditions. It works extremely well in a wide range of operating temperatures, from −40°F to +185°F (−40°C to +85°C). In addition, this industrial pressure transmitter has an electrical enclosure NEMA 4 rating, CSA approval, and also provides an intrinsically safe 2-wire 4-20mA output.

Hammer unions get very dirty. That’s why WIKA’s hammer union pressure transmitter features large weep holes on the sides to reduce the accumulation of water and debris, as well as to make it easier to clean.

Very competitively priced, WIKA’s hammer union pressure transmitter simply offers more features and greater value than other products in the marketplace. Contact our pressure measurement experts for more information on pressure transducers and other smart solutions for the oil and gas industry.

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