Certain appliances require an accurate control of gas at low pressure and the Primus Low Pressure Regulator helps to control that. This POL Low Pressure Regulator also helps to ensure that connection are secure and air tight. To help check if everything is fitted correctly, conduct a soap water test. Spray soapy water on the valve and turn the gas on to pressurise the system. Ensure the appliance is NOT on. If a leak occurs you will notice bubbles around the seal.