Mufan CO2 Regulator + Solenoid Valve W21.8 UK Aquarium - Fits Fire Extinguishers
1 x Mufan CO2 Regulator with dual gauges (W21.8 connection). W21.8 connection (UK standard). This regulator is designed to work with both dedicated aquarium CO2 systems and standard UK CO2 fire extinguishers.