2 1/2 in. (63.5 mm) Inspector's Hydrant Flow Nozzle NST encourages high-accuracy pitot tube readings by straightening the water stream at the fire hydrant port. Features a 2 1/4‚ (57.2 mm) inner diameter smooth-bore tube that delivers a constant 0.88 coefficient of discharge between 10 PSI and 56 PSI.
Each 2 1/2 in. (63.5 mm) Inspector's Hydrant Flow Nozzle features a waterproof decal designed to make estimating a coefficient of flow easier by highlighting the current GPM and corresponding coefficient between 10 PSI and 56 PSI. Made of durable, nickel-plated brass.
This 2 1/2 in. (63.5 mm) Inspector's Hydrant Flow Nozzle is available with National Standard Thread (NST) and pairs with any QRFS Pitot Gauge Kit or Brass Nozzle Flow Elbow for quick and painless fire hydrant testing.
Canadian CSA thread options available upon request.