MANUALLY OPERATED BUTTERFLY VALVES

Brand	Owner (click to sort)	Address	Description
CHEMSEAL	SERCK INDUSTRIES LIMITED	WARWICK ROAD BIRMINGHAM	MANUALLY OPERATED BUTTERFLY VALVES AND PARTS AND FITTINGS THEREFOR, ALL MADE WHOLLY OR PRINCIPALLY OF METAL;
DYNA-LOK	ITT Grinnell Valve Co., Inc.	Providence RI	Manually Operated Butterfly Valves;No claim is made to the exclusive right to use the design feature, apart from the mark as shown.;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

A system and method of improving signal to noise ration (SNR) in a fixed point fast Fourier transform (FFT/IFFT) generates from sample inputs and a twiddle factor butterfly outputs for each stage; scales the butterfly outputs of this stage from a predicted normalization scale factor to obtain the maximum butterfly output without overflow from this stage; determines from the butterfly outputs of this stage the minimum normalizing exponent for the butterfly outputs of this stage and predicts a normalization scale factor of the next stage from the minimum normalizing exponent of this stage and a stage guard scale value to obtain the maximum butterfly output without overflow from that next stage.