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PG4 Series

Polymer pressure is sensed by a metal diaphragm, mounted flush with the inside surface of the extruder barrel with pressure indicated on the readout gauge. The sealed diaphragm design eliminates the need for grease and prevents melt contamination and gauge plugging. On the rigid snout version the mechanical gauge can be rotated 300° for unobstructed viewing. 

The PG4 Series includes models PG441R, PG442R, PG443R, TPG441R, TPG442R, and TPG443R.

  • Direct, local readings
  • Mechanical design
  • Step-up and stem-down versions
  • Gauge head rotates 300°
  • 0 - 5,000 or 0 -10,000 psi
  • Stainless steel construction

Certifications | Approvals

EU Declaration of Conformity for Mechanical Pressure Gauges

Applicable for the following models: PG441R, PG442R, PG443R, TPG441R, TPG442R, TPG443R

ISO 9001:2015

REACH Regulations for European Union

RoHS Compliance Fact Sheet


Dynisco Product Portfolio

From breakthrough technology in the industry’s most complete line of sensors to renowned quality and performance in indicators, controls, and analytical instruments Dynisco has demonstrated the skill, experience and know-how that not only deliver the right solution for your unique application, but also provide unparalleled customer support.


Dynisco Online Shop Overview

Dynisco’s Online Shop is where you can have access to ordering all Dynisco parts from Polymer Testing Equipment to Sensors to accessories- all to optimize your application.

Have A Question? Ask a Dynisco expert for more information.

  • Dynisco

    38 Forge Parkway,
    Franklin MA 02038

    +1 508 541 9400  

  • Dynisco Europe GmbH

    Pfaffenstr. 21, 74078,
    Heilbronn, Germany

    +49 7131 297 0

  • Dynisco-Viatran Instrument Sdn Bhd

    Lot 3615, Jalan SM 6/8
    32040 Seri Manjung, Perak, Malaysia

    +605 6884014