Rego, Precimex, and Marshall propane regulators. A single stage regulator is designed for small outdoor appliances such as a gas grill. The Rego 10 psi high pressure regulator is designed to lower the tank pressure between your tank and your house. The Rego low pressure regulator drops the propane pressure just outside your house to the standard pressure of 11" of W.C. (Water Column). 11" W.C. is the regulated pressure for use with common cooking stoves, water heaters, and heating systems.