Series 260 Pressure Relief Valves

McDonnell & Miller : Valves :

Features and Benefits

  • For water tanks and hydronic heating systems
  • Protects against over-pressure
  • Minimizes hammering with flash steam
  • Low differential pressure – 3 psi (.21 kg/cm2) between opening and closing
  • Meets ASME Pressure Vessel and Boiler Code, Section IV
  • Sealed spring chamber prevents scale or sediment
  • build-up around seal
  • 11⁄2″ NPT Inlet and 2″ NPT Discharge
  • Cast iron body, brass seat
  • Maximum temperature 250°F (121°C)
  • Maximum operating pressure range 30 – 50 psig (2.1 – 3.5 kg/cm2)

Specifications

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