HEXNOVAS replacement plates & gaskets

API Schmidt Sigma156 replacement plate.

HEXNOVAS manufactures replacement plates and gaskets for API Schmidt Sigma156 heat exchangers. The OEM brand and model identify the equipment the parts are intended to fit. Plate pattern, gasket groove, material and operating duty are verified before supply.

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Sigma156 replacement plate dimensionsPlate drawing showing width, length, port distances and port diameter for the Sigma156 reference.975 mm2250 mm560 mm1835 mmØ340 mmSigma156Corrugation 57°124°
Published dimensions shown directly · schematic, not to scale

Technical reference

Dimensions and identification data.

Plate width
975 mm
Plate length
2250 mm
Horizontal port distance
560 mm
Vertical port distance
1835 mm
Port diameter
340 mm
Channel depth
4 mm
Single plate area
1.6 m²
Plate pattern / note
API Schmidt

Supply options

Specify the plate, gasket or complete plate pack.

Material and elastomer selection must follow the media, cleaning chemistry, temperature and pressure—not the model name alone.

Plattenmaterialien

  • 304 Edelstahl
  • 316L Edelstahl
  • Titan
  • 254SMO
  • Hastelloy
  • Nickel

Gasket materials

  • NBR
  • EPDM
  • FKM/Viton
  • High-temperature options by duty

Compatibility check

Send the original nameplate and plate photographs.

The dimensions above are an identification reference. HEXNOVAS verifies corrugation, port arrangement, gasket groove, material, thickness and operating conditions before supply.

Send identification details

Third-party brand and model names are used solely to identify existing equipment and dimensional references. HEXNOVAS is an independent supplier and is not affiliated with or endorsed by those manufacturers. Compatibility requires verification of the original plate, gasket groove and operating duty.

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