COMBINATION AIR VALVE Model MN-C70 BERMAD C70 is a high quality combination air valve for a variety of mining piping sustems and operating conditions. It evacuates air during pipeline filling, allows efficient release of air pockets from pressurized pipes, and enables large volume air intake in the event of network draining. With its advanced aerodynamic design, double orifice and Surge Protection (Anti-slam / slow closing) device, this valve provides excellent protection against air accumulation, vacuum formation and pressure surges, with improved sealing in low pressure conditions. The valve minimizes water spraying during air release. Features & Benefits ■ Straight flow body with nominal (equal) inlet and oulet size: Higher than usual flow rates. ■ Aerodynamic, full-body kinetic shield: Prevents premature closing without disturbing air intake or discharge. ■ Dynamic Sealing: Prevents leakage under low pressure conditions (1.5 psi; 0.1 bar). ■ Minimizes fluis spraying during air release: Innovative 2-step function, automatic orifice (Patent Pending). ■ Compact, simple and reliable structure with fully corrosion-resistant internal parts: Lower maintenance and increased life span. ■ Designed in compliance with functional standards and water service standards. ■ Factory approval and Quality Control: Performance and specification tested and measured with specialized test bench, including vacuum pressure conditions. Additional Features & Accessories ■ Built in Surge Protection C70-SP, C70-AC, C70-AS ■ Anti-Slam feature for smoother operation, preventing damage to the valve and the system. C70-SP ■ Adjustable "Switching Value” (pressure at which the kinetic orifice is partially closed) according to the specific system requirements. C70-AS ■ Inflow Prevention: Prevents intake of atmospheric air in cases where this could lead to damaged pumps, required re-priming, or disruption of siphon. C50-IP ■ Service Port fitted with 1/4", DN6 plug (codes P, U) ■ Drainage Valve (code Z). ■ Operational Data ■ Mininmum operating pressure: 1.5psi, 0.1bar ■ Media & operating temperature: Water 33-140oF, 1-60oC ■ Available outlet connections: 2"-3" female threaded, 4"-8" grooved Pressure Rating Class Main Components Typical Applications ■ Pumping stations: air relief, vacuum prevention and surge protection. ■ Pipelines: protection against air accumulation and vacuum formation at peaks and slope change points. ■ Water hammer: protection against vacuum formation during down-surge stage in systems affected by water hammer phenomena. ■ Suitable for almost all fluids used in mining such RAFF, ILS & PLS solutions for copper; cyanide barren and pregnant solutions for gold and seawater for desalination plants. All images in this catalog are for

MiningOrifice Specifications Inlet Size Air Relief and Intake (Pipeline Filling, Draining and Vacuum Conditions) Air Flows (Normal cubic feet per minute - ncfm) Air Release (Pressurized Operation)

Data for Surge Protection Features Air Relief with Surge Protection (Pipeline Filling) Air Relief with Inflow Prevention (Pipeline Filling) Inlet Size Note: Shown data is for side outlet. For other outlet options consult factory. All images in this catalog are for illustration only

BERMAD Mining | Mining Cutaway Eye Bolt Insect Screen (Optional) Sidewards Outlet Dynamic Seal Adjustable Surge Protection (only C70-AS) Pre-set 2nd stage flow (only C70-AS) Surge Protection Disc (only C70-SP/AC/AS) Without Surge Protection (C70) Service Port Dynamic Seal Auto Orifice Auto Orifice Disc Auto Orifice Rod Guiding Ribs Float Drainage Valve With Inflow Prevention (C70-IP) [email protected] • www.bermad.comewt wowh. abneer mi tahdu. tc noomc e . B E R M A D s h a l l n o t b e h e l d l i a b l e f o r a n y e r r o r s . The information herein is subj c t c g w o ti All rights reser ved....