Swing check valve Series B6 50 Swing check valve ensuring the protection of pumps or parts of networks against flow inversion. Description • Low headloss. • Opening on low differential pressure. • Stainless steel seat (except DN 40). • Stainless steel shaft. • Lubricated bearings. • Removable bonnet for easy maintenance of the flap seal without removing the check valve from the pipe. • Internal and external epoxy coating. • Horizontal or upward vertical mounting. • Version with or without weight-loaded lever. • Version with weight-loaded lever: - Shaft protruding on left side for weight-loaded lever. - n request, shaft protruding on both sides for weight-loaded lever O on one or both sides. - odification of the orientation of the lever arm allowing to influence M the closing of the flap (function of the check valve position). - djustment of the weight along the arm to change the sensitivity A of the flap. • Options, on request: - Limit switch (except DN 40). - Protective guard for weight-loaded lever. - By-pass (except DN 40 to 65). Technical data • Range: DN 40 to 400. • From DN 40 to 300, maximal working pressure: PN 16. • From DN 350 to 400 maximal working pressure: PN 10. • Maximum temperature: from 0°C to +60°C. • Maximum speed: 3 m/s for PN 10 and 4 m/s for PN 16. • Seating: class A according to standard EN 12266-1. • Face-to-face dimensions according to standards EN 558-1 Series 48 and ISO 5752 Series 48. • lange drilling according to standards EN 1092-2 and ISO 7005-2: F - ISO PN 10 or 16 for DN 40 to 300. - ISO PN 10 for DN 350 to 400. Applications • Pumping stations for water distribution and irrigation (filtered water). • Drinking water and irrigation networks (filtered water). • Fire protection networks. Tests • Manufacturing fully tested according to EN 12666-1.

Swing check valve Spherical trunnion Reliable watertightness The spherical trunnion provides a self-centring effect of the valve disc in the body seat, thus always ensuring tight closure (up from 0,2 bar at least). The stainless steel seat incorporated in the body of the valve ensures corrosion resistance for long lasting water. Dumping buffers Robust design Operation shaft, clapper arm and flap in stainless steel thus ensuring high protection from corrosion. Clapper arm equipped with dumping buffers in rubber, in order to limit the noise and impacts while full opening. Lubricated bearings in...

Swing check valve DN 50 to 300 Swing check valve without weight-loaded lever 1 Swing check valve with weight-loaded lever on left side 1 Designation Body* Seat Centring pin Bonnet* Bearing O-ring O-ring Bush Shaft Clapper arm Pin Buffer Buffer Flap Resilient valve disc Blind flange: without weight-loaded lever with weight-loaded lever Washer Screw Washer Screw Body/bonnet gasket Key (with weight-loaded lever) Safety ring (with weight-loaded lever) Shaft flange (with weight-loaded lever) Lever arm* (with weight-loaded lever) Washer (with weight-loaded lever) Screw (with weight-loaded lever) Weight*...

Swing check valve Swing check valve without weight-loaded lever n°xd Swing check valve with weight-loaded lever on left side, and shaft protruding on both sides E Swing check valve with weight-loaded lever on left side Open position Drawings for DN 50 to 300, please consult us for other DN. In order to avoid accidents caused by the weight-loaded lever travel, install a protective guard system according to rules in force (see options). The arrow indicates the flow direction, pumps in operation (same direction as that indicated on the swing check valve). Horizontal installation (Fig. 1) or upward...