Valves - diaphragms

PTFE diaphragms

Overview

PTFE diaphragms

Polytetrafluoroethylene (PTFE) offer the ultimate chemical resistance and purity. Our PTFE diaphragms are extremely chemically resistant, often used with heptane and methyl chloride.

All our diaphragms are laser-etched with cure dates and batch numbers, ensuring that they are completely traceable.

Features and benefits

  • Not really an elastomer; has cold flow issues that can result in leaking
  • Relatively higher cost to other materials
  • Currently only available for our tank valves
  • All our diaphragms are laser-etched with cure dates and batch numbers, ensuring that they are completely traceable
  • Extremely chemically resistant
  • Extremely steam resistant
  • Only available for tank valves

Technical summary

Diaphragm variant(s)Bellows 
Operating temperature range4 - 260 °C
Operating temperature range39 - 500 °F
Compatible actuatorsAJS, AKS (0.5", 1", 1.5") 
Material specificationPolytetrafluoroethylene 
StandardsASME BPE, USP VI 

Technical Summary table lists features available within the range. See ‘Technical specifications’ tab for model specific information.

Specifications

Technical specifications

PTFE diaphragms
Sizes0.5", 1.0", 1.5", 2.0", 3.0" 
ColorWhite 
Diaphragm variant(s)Bellows 
Parylene treatmentNo 
Operating temperature range4 - 260 °C
Operating temperature range39 - 500 °F
Compatible actuatorsAJS, AKS (0.5", 1", 1.5") 
Material specificationPolytetrafluoroethylene 
StandardsASME BPE, USP VI 

Materials of construction

MaterialPTFE

Literature

Brochures

  1. ASEPCO valves (US).pdf
    PDF - 722.5kb

Datasheet

  1. ASEPCO diaphragms datasheet.pdf
    PDF - 234.5kb

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