SGV is offered with an extended or compact body for applications such as pumpout and venting of system components. Approved refrigerants include ammonia and CO2, halocarbons and secondary refrigerants. The gauge valve is manufactured of stainless steel to make it invulnerable to corrosion. It does not have a back seat so it does not require stem seal replacement. Advantages also include wrench flats to ease installation, a removable seal cap and 0.25” NPT connections.