The budget for this contract can be estimated based on the type and quantity of items being procured. Refrigerated air dryers, condensate drains, and ball valves are specialized equipment, and their prices can vary widely depending on the manufacturer, model, and features. However, we can make an educated estimate based on industry standards. A refrigerated air dryer can cost between $5,000 to $20,000, a condensate drain can cost between $500 to $2,000, and a ball valve can cost between $500 to $5,000. Assuming an average cost of $10,000 for the air dryer, $1,000 for the condensate drain, and $2,000 for the ball valve, the total cost for two of each item would be approximately $26,000 to $60,000. Considering the one-year warranty and potential maintenance costs, the total budget for the contract could be in the range of $30,000 to $70,000.