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Piping Systems & Welding

High Purity Valves

T-342/T-343 Actuated Diaphragm Valves (PVDF, PPn, and PP)

  • Reliable, compact, and corrosion resistant actuation for T-342 and T-343 High Purity diaphragm valves
  • Valves are 150psi rated at 68°F and designed for high temperature service
  • Fully serviceable with replacement diaphragms available


Data Sheet

Ideal Applications Include:

Islolation & Throttling Valves, UPW, WFI, RO/DI Systems, Semiconductor, Photovoltaic, Pharmaceutical, Biotech, Institutional, Laboratory Research, Nanotech

Supply Range


T-342/T-343 actuated diaphragm valves: (1/2" x 1/2" - 6" x 2")

PolyPure® Natural Polypropylene

T-342/T-343 actuated diaphragm valves: (2" x 1/2" - 2" x 1")

PP-Pure® Pigmented Polypropylene

T-342/T-343 actuated diaphragm valves: (1/2" x 1/2" - 4" x 1")


  • Compact and corrosion resistant polyamide body
  • Robust piston style designed for longevity
  • No wetted metal components
  • Visual position indicator
  • Low energy consumption via the use of volume fillers
  • Sealed construction to protect internals from corrosive environments
  • Assembled in a clean environment and shipped double bagged
  • Wide range of sizes and configurations


  • Air-to-spring (Open & Closed)
  • Air-to-air
  • Min/max stroke limiter
  • Electric position feedback
  • Magnetic position feedback
  • Manual override handwheel