The Bühler Technologies P2.74 ATEX Explosion-Proof Dual-Head Sample Gas Pump represents the premier level of diaphragm gas sampling pumps engineered by Bühler Technologies GmbH (Germany). Certified in full compliance with European ATEX explosion protection directives, this pump guarantees safe and reliable performance in hazardous classified environments (Zone 1 and Zone 2).

The core technical highlight of the P2.74 ATEX lies in its dual-head architecture (Dual Pump Heads) combined with integrated bypass valves located directly on the Ex pump heads. This allows operator flexibility to run two independent gas lines simultaneously, or connect the heads in series/parallel for higher pressure or doubled flow rate, while conveniently adjusting internal pressure and flow without requiring external relief valve assemblies.

Constructed from chemically inert materials such as PTFE, PVDF, or 1.4571 (316Ti) Stainless Steel combined with PTFE-coated diaphragms, the Bühler P2.74 ATEX provides complete immunity against aggressive gas components including SO2, SO3, NOx, HCl, HF, H2S, CO, CO2, and flammable organic vapors. Driven by a spark-free Ex motor, it delivers continuous 24/7 duty for multi-stream gas conditioning panels in demanding hazardous environments.

• Manufacturer: Bühler Technologies GmbH
• Product Series / Model: P2.74 ATEX (Ex-proof Dual Head Sample Gas Diaphragm Pump with Bypass Valve)
• Country of Origin: Germany
• Explosion Protection Certification: ATEX II 2G Ex h IIC T4/T3 Gb (suitable for Zone 1 and Zone 2)
• Pump Head Design: Dual independent pump heads with integrated bypass valves
• Special Feature: Integrated bypass valves for direct Ex pump head flow/pressure regulation
• Operating Principle: Explosion-Proof Electromechanical Dual-Head Diaphragm Pump with bypass
• Free Flow Rate: Approx. 2x 280 Nl/h or up to 2x 400 Nl/h (depending on parallel/series connection)
• Max Operating Pressure: Max 1.5 bar - 2.0 bar relative
• Max Vacuum Capacity: Down to 0.3 bar absolute
• Wetted Materials: PTFE, PVDF, Viton (FKM), Stainless Steel 1.4571 (316Ti)
• Diaphragm Material: PTFE-coated EPDM
• Max Inlet Gas Temperature: Up to +70°C / +100°C (depending on head material)
• Ambient Operating Temperature: -20°C to +50°C
• Power Supply Options: 230V AC (50/60 Hz), 115V AC (50/60 Hz), or 24V DC (Ex variant)
• Power Consumption: Approx. 60W to 100W
• Inlet / Outlet Port Connections: G 1/4" or NPT 1/4" female threads (4 separate ports)
• Protection Class: IP 55 / IP 65
• Net Weight: Approx. 4.3 kg - 7.3 kg (depending on motor configuration)
• System Compatibility: ATEX explosion-proof certified, dual-channel versatility with integrated flow adjustment, chemically inert gas path, fully integrable into CEMS cabinets and hazardous area multi-stream gas analysis panels.