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About SSP

Gauge Valves - LP Series Rising Plug Gauge ValvesRising plug valve

Twinsburg, OH. LP Series Rising Plug valves use a unique set of features that can improve reliability and reduce the operating costs for process instrumentation applications with working pressures up to 6000 psig (413 bar) and temperatures from -65 to 600° F (-53 to 315° C).


Features include:

  • Bonnet locks that prevent the accidental disassembly of the bonnet from the valve during maintenance, operation or from system vibration.
  • Live loaded chevron packing compensates for packing wear and changes in temperature and pressure; this design maintains a leak-tight stem seal and reduces or even eliminates the need for packing adjustments.
  • Non-rotating lower stems reduce packing, seat, and stem damage that can result from the stem tip rotating onto the valve seat. 
  • Back seating stem tips make inline packing adjustments safer.
  • Straight flow path allow flow path to be rodded for cleaning.


  • Body and bonnet materials: 316 stainless steel and alloy 400
  • Seat materials: Acetal, PFA and PEEK
  • Packing Material: PTFE and PEEK (with PEEK packing only)
  • End Connection: NPT (Standard), Griplok, Unilok and Griplok tube ends and BSPT
  • Sizes:  1/4, 1/2  in to 3/4 in. inlets and 1/4 and 1/4 in. outlets.
  • Extended Inlets (Lagging):  2, 4 and 6 in.
  • Panel Mounting
  • Specially Cleaning: Compliance with ASTM G93 Level C and CGA G-4.1, Cleaning Methods and Cleanliness Levels for Material and Equipment Used in Oxygen-Enriched Environments. To specify, add -XP98 to the part number. 
  • Sour Gas: SSP offers four configurations to meet the requirements in ANSI/NACE MR0175/ISO 15156- 3 and NACE MR0103/ISO 19745.  


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