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MegaPress 304 FKM


Viega MegaPress 304 FKM fittings are the industry's first
stainless fittings for Schedule 5 to 40 piping systems. Save labor cost and system downtime with press fittings in a wide variety of configurations, available in sizes from ½" to 4". MegaPress 304 with an FKM sealing element is suitable for chemical and higher
temperature applications.


  • Engineered with a 420 stainless steel grip ring plus a 304 stainless steel separator ring for sizes ½" to 2" and a PBT separator ring for sizes 2½" to 4"
  • FKM sealing element
  • Wide range of fitting configurations
  • Eliminates threading and welding
  • No fire watches, hot work permits or messy cutting oils
  • Makes secure press connections from ½" to 4" in seconds
  • Compatible with existing press tools
  • Backed by limited written warranty
  • Can be used on Schedule 80 pipe, but with the rating of a
    Schedule 40 system

  • ASME B31: Code for Pressure Piping
  • ASME B31.1: Power Piping
  • ASME B31.3: Process Piping
  • ASME B31.9: Building Services Piping
  • ASTM A312: Standard Specification for Seamless, Welded and Heavily Cold Worked Austenitic Stainless Steel Pipes
  • IACS UR P2: Rules for piping design, construction and testing
  • IAPMO: PS-117: Press Connections
  • IAPMO: Uniform Mechanical Code (UMC)
  • IAPMO: Uniform Solar, Hydronics and Geothermal Code (USHGC)
  • ICC: International Mechanical Code (IMC)
  • ICC: International Residential Code (IRC)
  • ICC-​ES LC1002: Press-​connection Fittings for Potable Water Tube and Radiant Heating Systems
  • National Building Code of Canada (NBCC)
  • NFPA 13: Standard for the Installation of Sprinkler Systems
  • NFPA 13D: Standard for the Installation of Sprinkler Systems in One- and Two-​Family Dwellings and Manufactured Homes
  • NFPA 13R: Standard for the Installation of Sprinkler Systems in Low-​Rise Residential Occupancies

  • ABS: American Bureau of Shipping Type Approval
  • BV: Bureau Veritas Type Approval
  • Canadian Registration Number (CRN): 14541.5 A/B/C
  • DNV GL: Det Norske Veritas Germanischer Lloyd Type Approval
  • FM Class 1920: Pipe Couplings and Fittings for Aboveground
    Fire Protection Systems (½" to 2" only)
  • IAPMO file 10555 (MegaPress 304 FKM)
  • ICC-​ES PMG-1451 (MegaPress 304)
  • LR: Lloyd’s Register Type Approval
  • RINA: Registro Italiano Navale
  • ANSI/CAN/UL 213: Standard for Rubber Gasketed Fittings for Fire-​Protection Service (½" to 3" only)
  • United States Coast Guard Acceptance Letter 2019‑3660

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    A white dot on a Viega MegaPress 304 fitting indicates Smart Connect technology with an FKM sealing element.


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