The Bühler Technologies P2.4 ATEX Explosion-Proof Sample Gas Pump is an advanced gas sampling instrument engineered by Bühler Technologies GmbH (Germany)—a recognized global authority in industrial sample gas conditioning systems. Designed and certified to meet European ATEX safety directives, this pump ensures completely safe operation in hazardous classified areas (Zone 1 and Zone 2).

The key distinction of the P2.4 ATEX model lies in its integrated bypass valve located directly on the Ex pump head. This feature allows operators to easily adjust internal pressure and flow regulation for sensitive gas analyzers without requiring external relief valve assemblies, while fully maintaining ATEX compliance.

Constructed from chemically inert materials such as PTFE, PVDF, or 1.4571 (316Ti) Stainless Steel combined with a PTFE-coated diaphragm, the Bühler P2.4 ATEX provides complete resistance against aggressive sample gas components including SO2, SO3, NOx, HCl, HF, H2S, CO, CO2, and flammable organic vapors. Driven by an explosion-proof motor, it delivers continuous 24/7 spark-free operation for demanding industrial plant environments.

• Manufacturer: Bühler Technologies GmbH
• Product Series / Model: P2.4 ATEX (Ex-proof 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)
• Operating Principle: Explosion-Proof Electromechanical Diaphragm Pump with integrated bypass
• Free Flow Rate: Max approx. 400 Nl/h (approx. 6.6 L/min)
• Special Feature: Integrated bypass valve for direct Ex pump head flow/pressure regulation
• 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. 55W to 90W
• Inlet / Outlet Port Connections: G 1/4" or NPT 1/4" female threads
• Protection Class: IP 55 / IP 65
• Net Weight: Approx. 3.6 kg - 6.6 kg (depending on motor configuration)
• System Compatibility: ATEX explosion-proof certified, chemically inert gas path, built-in flow control, fully integrable into CEMS cabinets and hazardous area gas analysis panels.