6266N Henry Packless Globe Shut-Off Valve, Brass, Standard 3/4" ODS

Packless valves are so called due to the absence of a packed gland for stem sealing. Instead, metal diaphragms are used to isolate the stem from the fluid area.Applications Henry Technologies packless valves are used in a variety of air conditioning and refrigeration applications for isolating, flow control, charging and purging purposes. The valves are suitable for HCFC and HFC refrigerants, along with their associated oils. The 2100B & 2111B series are suitable for HCFC, HFC and CO2refrigerants along with their associated oils.Main featuresRobust designCompactHeat stabilised nylon seat ring for positive shut-offPositive back-seating with valve in open positionRaised seat reduces debris induced sealing issuesLarge diameter diaphragm for greater lift, better flow and longer lifeHermetic seal between bonnet, diaphragms and bodySuitable for vacuum applicationsMaterials of Construction - Standard seriesThe valve body and bonnet are made from brass. The lower stem is made from brass for all models except the 629 series, where the material is monel.The upper stem, stem cap and valve springs are made from stainless steel. The seat ring is made from nylon for all models except the 629 series. These models use a stainless steel seat ring. The diaphragm set is composed of both phosphor bronze and stainless steel. The hand-wheel is made from white metal.