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Hygienic Sealing Materials for G ¼" PTAM pressure sensor according to EN 837-1 and FDA

Specification of the replacement seal for the PTAM-1XXXFTJEEZX with G1/4 connection – EN 837-1 and FDA 21 CFR / (EC) No. 1935/2004 certification.
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Table of Contents

1. Technical Specification of the Process Connection

Based on the provided engineering drawing, the pressure sensor features a specific process connection designed to seal mechanically with high precision. The dimensions and standards are captured below:

  • Connection Thread: G 1/4" parallel thread according to ISO 228-1 / EN 837-1.
  • Inner Bore Hole: Ø 3 mm for fluid passage.
  • Centring Pin: Ø 5 mm outer profile at the front edge (indicated by the green arrow in the picture below).
  • Centring Pin Length: 2 mm front edge depth with a total connection length of 13 mm.
  • Hex Nut Width: SW27 (hex 27 mm) body for mounting torque application.

2. Certified Sealing Material Options

For food, beverage, or pharmaceutical processes, the sealing materials must maintain full compliance with European and US regulatory frameworks. Below are three materials, which are suitable for this mechanical configuration:

This document is for informational purposes only. The final design and material selection must be coordinated with the plant operator and aligned with the specific process parameters.

Keywords:
seiling materials, ptam, process connection, ISO 228-1 , G1/4, EN 837-1, FDA