Butterball valves (NFPA Expo)
Prevent water hammer damage to a sprinkler system with Milwaukee Valve’s slow-close Butterball valves. The Butterball carefully controls the valve’s closing, eliminating shock that can cause pipes to fail. Available in 1” to 2 1/2” sizes with threaded or grooved ends, Butterball has UL and FM approvals for up to 175 psi. The New York City Board of Standards and Appeals also approves Butterball for 350 psi and 500 psi for high-rise applications. The patented design includes a triple o-ring seal for a bubble-tight seal and a seal-welded disc and stem for strength and durability. The Butterball can be ordered with a built-in supervisory switch to eliminate awkward field assembly and callbacks for switch adjustment.
Milwaukee Valve. www.milwaukeevalve.com