The Truflo #TF550 Blow-Off is designed and engineered with a slim profile that fits into a standard 5¼” adjustable valve box. The #TF550 provides an alternative to ball valve operated blow-offs, as it utilizes a plunger assembly that is easily maintainable and repairable providing longevity with minimal maintenance. The #TF550 is all brass construction with all brass principle working parts. The Truflo #TF550 comes standard with a 2” FIP vertical straight inlet and a 2” MIP outlet. The Truflo #TF550 is fully serviceable from above ground. Certified to NSF/ANSI 372.