[email protected] +919820996011 www.riddhisiddhimetal.com Instrument Connection - 1/2″ NPSM or 1/2″ BSPP Standard Head Length - 50mm STD - 25NB Taper 22/16mm Std OD for Parallel wells - 25NB Parallel 20mm - 40NB Parallel 20mm - 50NB Parallel 20mm Thermowell Flanges Specification, Grades, Size, & Materials - Thermowell Flange Manufacturers