Internal Thread Fittings/Ports on Valves are much stronger (Higher Pressure ) than standard low pressure external thread fittings
NOTE : VICI SS Fittings use a similar thread to Swagelok & Parker etc generally with Male Nuts and Female Port Fitting ( for much stronger / higher pressure use )
BUT THEY ARE NOT INTERCHANGABLE
* VICI-Valco Cheminert ( Fittings & Valves ) are a major Instrumentation Valve supplier to many OEMs ( almost Universal WW ) eg ISCO NOT the same as Rheodyne - their nuts/ferrules are different again !
* a “sister” Co of VICI (Jour)-AG Europe
Unions, Reducing Unions Internal/External; Tees & Crosses also lvailable see Catalog & ASK for a Quote