DEPA® Closed Surface Diaphragms Series Nopped E4®

Building upon the success of the DEPA® nopped E4® PTFE Compound Diaphragm, the new DEPA® CLOSED SURFACE DIAPHRAGM SERIES is designed and manufactured in-house. The diaphragms ar available in EPDM, EPDM Grey, NBR, NRS, FKM* and PTFE compound.

Key Features And Benefits

EXTENDED LIFETIME

The absence of the outer piston reduces wear around the flexing area, increasing diaphragm life.

ELIMINATES LEAKS

Integrated insert eliminates a potential leak path within the pump. The pre-defined fixing feature of the outer rim design improves safety for both the customer and environment.

EASE OF MAINTENANCE

Pump maintenance is simplified and requires only hand tightening of the diaphragm. Modular design ensures all diaphragms are interchangeable with all DEPA® pumps.

EASY TO CLEAN

Clean surface reduces the build-up of impurities, improves flow and increases energy savings.

Technical Details

SIZE RANGE

  • The diaphragms (PTFE Compound, FKM*, EPDM, EPDM Grey, NBR, NRS) are available in the sizes ½” (15), 1” (25), 1 ½” (40), 2″ (50), and 3″ (80)

TEMPERATURE RANGE

  • PTFE Compound -10 to +130
  • NBR -15 to +90
  • EPDM -25 to +105
  • EPDM Grey -25 to +90
  • FKM* -5 to +120
  • NRS -15 to +70

*a diaphragm based on Viton™ fluoroelastomer, Viton™ is a registered trademark of The Chemours Company

Applications

The closed surface eliminates potential leak path. Due to single piece design surface of the diaphragms, particle entrapment cannot occur, improving significantly the cleanability of the diaphragm. The absence of the outer piston avoids burr-formation on the wetted side of the diaphragm and subsequently improves lifetime for nearly each application.

Certificates


  • Machinery Directive 2006/42/EC
  • Eurasian Conformity

For the EPDM Grey diaphragm & PTFE Compound diaphragm:

  • FDA Conformity
  • 1935/2004/EC & 10/2011/EU
  • Bisphenol-A and Phthalates free
  • BfR Recommendation XXI (category 3)
  • The diaphragms are ATEX compliant in accordance with directive 2014/34/EU in combination with the pump
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