Double Block & Bleed valve Double isolation & purge Your 3 in 1 solution

Double Block & Bleed Ensure safety of your operators Upstream isolation valve 3 in 1 solution Guarantee of total tightness on dangerous fluids with double isolation (2 valves mounted in series). Risk of leakage avoided to protect operators and installations, particularly during equiment maintenance or cleaning on this line. Downstream isolation valve Avoid risk of overpressure bleed the remaining fluid between valve 1 and 2. Close & lock all valves in single and limited area instead of manipulating 3 separate and distant valves.

Working principles Normal operation Main line valves are in open position, while the bleed valve is closed. Fluids flows through the DBB valve. Maintenance operation STEP 1 The upstream valve 1 is closed, while the downstream valve 2 is open. The bleed valve 3 is closed. The bleed valve 3 is open, to evacuate the remaining fluid to a secured event pipe. Downstream valve 2 is closed, ensuring double sealing of the pipe section. The downstream section is now fully isolated and secured for intervention or maintenance works. Our DBB valve are made in our factory at Gisors (Normandy – France). They...

Increase safety Ease your maintenance PERFORMANCE & RELIABILITY afety for operators and installations S during maintenance interventions Internal tightness : « classA » ace. to EN12266-l. < 10-3 mbar.L/s (He at 50 bars) Sealing at each valve seats Valves isolation in a single area No risk of unclosed valves AVAILABILITY & MAINTENANCE «PLUG & PLAY» DESIGN Easy and fast installation DBB valves with orbital welding or flanged ends are delivered fully assembled for direct mounting on fluid piping. Welding operations during installation reduced by 2. Junction base entirely machined. No additional...

Multiple combination Flexible & modular actuation lockable manual or actuated (mix available) Flexible & modular connexion Junction base connexion orbital welding, flanged (other ends : BW, SW, BSP, NPT, ... ) Sealing between bleed valve and junction base Dimensions of the DBB Valve Body size 15 DN Purge valve (BSP threaded connection) Overall length Overall length (orbital welding end version)

Liquid and Gas - Group 2 (not dangerous) 110 100 Liquid - Group 1 (dangerous) 110 100 DBB valve (DN50) on clean steam line (Food & beverages) The DBB PZ4 valve Steam and High Temperature Fluids Steam isolation for safety measure and staff injuries prevention. Steam for drying, extraction or heating. Sampling connection. Clean steam (food industries). Explosion prevention of fuel, natural gas boilers. Temperature range: from -30°C to +280°C All industries utilities. For flanged versions, take into account the PN of the flanges if limiting. Pipe DN DN08 to DN150 Material Stainless steel 316L (body,...

Liquid and Gas - Group 2 (not dangerous) Liquid - Group 1 (dangerous) 110 100 DBB valves (DN100) on heat-insulated boiler manifold heater (Food & beverages) Corrosive and dangerous fluids Temperature range : from -50°C to +190°C Petrochemicals (Olefins, Aromatics) and Downstream Process. (polymers, thermoplastics, elastomers) Heating steam for reactors For flanged versions, take into account the PN of the flanges if limiting. Pipe DN DN08 to DN150 Material Stainless steel 316L (body, base, and ends) Seats PTFE 2nd generation Type of operation Available with lockable lever and/or motorization;...

MECA-INOX EUROPE 1, rue de la Croix des Maheux F-95031 CERGY-PONTOISE CEDEX T. + 33 (0)1 78 47 80 00 [email protected] INDUSTRIAL PLANT 12, rue de la Haute Borne ZAC Le Mont de Magny 27140 GISORS – France Design : Neway Partners © Photographie : Neway Partners & Jean-Michel Rousvoal BALL VALVES MADE IN FRANCE WORLDWIDE AVAILABLE