L & J ENGINEERING, LLC

storage tank vent valve opening detection kit comprising a proximity switch

liquid level monitoring systems comprising liquid level gauges; transmission units, namely, remote transmitters and remote process condition transmitters; instruments for monitoring liquid level information, namely, tank gauges, direct digital level gauges, intelligent servo gauges, magnetostrictive level gauges, microprocessor controlled servo gauges, bottom sediment and water gauges, microprocessor tape gauges, hydrostatic gauges, liquid flow indicators, and liquid depth gauges; and replacement parts for all of the aforesaid goods