Product features:

· Design acc. to DIN EN 1171

· Internal, non-rising stem

· Double flanged connection acc. to DIN EN 1092-2

· Face to face dimension acc. to DIN EN 558, Series 14 (F4) or Series 15 (F5)

· Resilient seated in both directions of flow

· Solid rubber wedge made of elastomer with wedge drainage

· 100 % free flow passage with smooth inner pipe bottom, trouble-free piggable

· Long, centred wedge guide

· Back-sealing, exchangeable shaft sealing under full working pressure

· Available in accordance with DVGW GW 336

Materials (basic version):

· Body and bonnet of ductile cast iron EN-GJS-400-15 (GGG-40)

· Spindle made of A2

· Spindle nut made of bronze

· Spindle collar supported on POM sliding discs

· Connecting bolts made of A2, countersunk and sealed

· Corrosion protection by means of fusion bonded epoxy powder coating RAL 5015 (average dry film thickness >250μm)

· Drinking water version: EPDM rubber coating of wedge in accordance with KTW and DVGW worksheet W 270

· Waste water version: NBR rubber coating of wedge

Technical Characteristics:

Fields of application:

Waste water technology
e.g. for raw water,
purified waste water, air, etc.

Water procurement and water treatment,
water supply and hydroelectric stations
e.g. for fresh water, surface water, etc.

Chemical industry
e.g. for chemically polluted waste water, etc.

Food industry and breweries
e.g. for washing and rinsing plants, conveyor plants, etc.

Further possibilities of application on request