Valves - diaphragms

EPDM and EPDM plus diaphragms

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Overview

EPDM and EPDM plus diaphragms

Ethylene propylene diene monomer (EPDM) is fairly chemical resistant and offers quality performances in applications with repetitive steam-in-place (SIP) cycles.

We currently have two types of EPDM diaphragm available:

  • EPDM a relatively low cost material widely used in pharmaceutical applications
  • EPDM Plus a Parylene surface treated version which improves the longevity of the EPDM and greatly reduces the stickiness of the diaphragm.

Features and benefits

  • All our diaphragms are laser-etched with cure dates and batch numbers, ensuring that they are completely traceable
  • Wide temperature range; good in steam applications
  • Not suitable for use with solvents or petroleum agents
  • Parylene surface treated version available

Technical summary

Diaphragm variant(s)Bellows, Parylene surface, Straight 
Compatible actuatorsAJS, AKS 
Material specificationEPDM with Parylene surface treatment, Ethylene propylene diene monomer (peroxide cured) 
StandardsASME BPE, RoHS, USP VI 

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

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Specifications

Technical specifications

EPDM diaphragms
ColourBlack 
Diaphragm variant(s)Bellows, Straight 
Parylene treatmentNo 
Operating temperature range -51 to 135 °C
Operating temperature range -60 to 275 °F
Max. operating pressure70 psig
Compatible actuatorsAJS, AKS 
Shelf life5 years
Material specificationEthylene propylene diene monomer (peroxide cured) 
StandardsASME BPE, RoHS 
Certification and complianceADCF, BSE/TSE free, FDA 21CFR177.2600, USP <87> 

Materials of construction

RS60065B FDA Grade ethylene propylene diene monomer rubber
Inserts304 SS

Literature

Brochures

  1. ASEPCO weirless radial diaphragm valves (US).pdf
    PDF - 605.5kb

Datasheet

  1. EPDM Diaphragms datasheet (US).pdf
    PDF - 140.9kb

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