Double Union vessel connection conforms to NACE MR0175, "Free-Turn” design suitable for sour gas and brine… much longer service life than conventional gage valves

Second union at gage connection allows gage-valve “combos” to be shipped from factory on specified centers and then glass be re-oriented in the field by swiveling 360° before tightening the union nut

LG can be removed from service for maintenance or cleaning without disturbing gage valves
Provides additional degree of freedom when used with Close Hook-Up gages and spherical vessel union. When fitted with male gage connectors one pipe thread engagement can be eliminated, for Close Hook-Up gages

-Offset Pattern- permits clean-out using brush
-Automatic Safety Ball Checks

Available sizes:
-Union Vessel: 1/2”, 3/4”, 1” M-NPT; also Male SW and Flanged
-Rigid Gage: 1/2” or 3/4” F-NPT
-Rigid Vent & Drain: 1/2” or 3/4” F-NPT

Materials of Construction:
-A105N
-A350 LF2
-F182 F316L

Valve stem packing is solid PTFE bushing but also available with braided fugitive emission graphite packing

Standard metallurgy is fine grain carbon steel, normalized per ASTM A105N. Materials can be heat treated where required for service to -50°F, ask for “Low Temp Carbon Steel, or LF2”. Also available in forged T316 SS

Options:
-Press-in valve seat made of abrasion resistant Inconel, for steam service
-Long Stem for reaching through insulation

Why customers like Inferno gage valves…

A Viton O-ring is provided in the vessel union for easier fit-up in the field. This can insure no leakage at the union providing angular misalignments are reasonable

The standard, most popular vessel connection is designed with a narrowed neck on the shank and an undercut in the union nut. The combination permits ± 1/8” movement of the shank around the face of the valve body in all directions. This translates into adjustability of C-C of ± 1/4”, one-third more than our nearest competitor