The Camco Horizontal Two Stage Propane Regulator has integral first and second stages that ensure smoother, more consistent flow of gas to all appliances. Its inlet is 1/4" female NPT and the outlet is a 3/8" female NPT. The outlet pressure is 11"W.C and has a 160,000 BTU/hr capacity. Use Camco's 59843 20" Pigtail Propane hose Connectors - ACME x 1/4" male NPT to connect to a 20 lb or 30 lb LP tank with ACME threads.