Highlifter Shop › Outlet Gauge 0 to 600 psi Image 1 of 1 Outlet Gauge 0 to 600 psi $23.00 Check at a glance to see how much water pressure your Highlifter is making. A must for diagnosing issues and finding leaks. Quantity: Add To Cart Added! Check at a glance to see how much water pressure your Highlifter is making. A must for diagnosing issues and finding leaks.