Crane: New nopped diaphragm for chemical processing applications

Featuring an innovative “nopped” surface, designed to create advantageous flow conditions emulating the effect of golf ball dimples, the Depa Nopped S4® Diaphragm is a versatile, state of the art industry solution. The use of Santoprene® as its core material, a substance uniting elastomer (EPDM) and polypropylene (PP), in synergy with its chemical and mechanical properties offers enhanced flexibility and resistance against abrasion, extending the lifetime and corresponding economy of operation and maintenance.

The Depa Nopped S4 diaphragms are designed for applications in chemical industries, e.g. basic chemicals, paints, varnish, coatings, and heavy duty industries, for which they meet or exceed relevant industry standards.

The efficiency and reliability of Nopped Diaphragms is further enhanced by the modular principle guiding the design of Depa pumps and diaphragms, and are freely interchangeable between various models of these pumps, further adding to their lifetime economy as spare/component parts inventory of the diaphragms can be reduced.

The Depa Nopped S4 Diaphragm is in compliance with Machinery Directive 2006/42/EC. It is available in 5 sizes from DL15-80 (½” – 3”), it can operate within a temperature range of -20° C to +110° C (-4° F to 230° F), and a maximum 7 bar operating pressure.



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