Spirax Sarco Acoustic Plate, 4 in ANSI 125/150, 12 Hole, Cast Steel

The Spirax Sarco model AP Acoustic Plate is designed to graduate the expansion across a valve, and therefore reduce valve noise. The acoustic plate absorbs the impact of the vent pressure at the downstream side of the valve. It distributes the steam flow and provides a noise frequency shift to reduce the perceived noise using a multiple hole orifice pattern in the plate inserted on the downstream side of the valve. Noise level reductions of up to 10 dBa can be achieved.

How to Order Spirax Sarco AP Acoustic Plates: Specify the Size, Flange Size and Number of Holes. For Spirax Sarco 70683 order as Spirax Sarco AP-4A-12-I, as this item is for use with 4 inch ANSI 125/150 Flanges, and has 12 Holes.