​​EDRV NOZZLE CHECK VALVE

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​An optimised flow cross-sectional area as well as a valve disc and valve stem gasket designed for minimum flow  resistance ensure minimum head losses with the ERHARD non slam nozzle check valve. This enables highly economic operation especially in pumping stations. Valve disc, spring and closing travel have been engineered in such a way that the ERHARD non slam nozzle check valve reacts that quickly even in highest flow delays (e. g. in a vertical line) that only minimal return flow  velocities  occur, with the flow being gently slowed, thus reducing water hammers to a minimum.

Technical Specifications.

• Valve disc (DN80-300): zinc-free bronze / elastomer KTW/W270.
• Valve ring (DN350-600): 1.4404 / elastomer KTW / W270.
• Internal body: zinc-free bronze.
• Guiding stem: stainless steel.
• Guiding bush: high-performance polymer.
• Body: ductile cast iron.
• Spring: stainless steel.
• Protection  outside: ERHARD EKB fusion bonded epoxy.
• Protection  inside: ERHARD vitreous enamel.

Click the cog below for downloadable TechSpec. ​

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