Type 12 Welded, Sanitary, Clamped-Style, ASME-BPE Diaphragm Seals

Key Features

  • Features a flush mount diaphragm and all welded construction, ideal for food & beverage, pharmaceutical and sanitary markets
  • Wetted parts and all welded housing are constructed of 316 stainless steel for 
    greater strength and durability
  • Minimum working pressure 0 to 30 psi through -30 inHg to 600 psig
  • Accommodates process connection pipes from 1-1/2" through 3" sizes
  • Accommodates 2-1/2", 4", 4-1/2" and 6" gauge sizes
  • Clamped connection allows ease of installation and removal of seal for maintenance and cleaning
  • Wetted materials polished to Ra 32 or better
  • Consider gauge size, pressure range, media composition, ambient and operating temperature, and maximum working pressure when selecting
  • For process temperatures over 212 °F a capillary or cooling element is recommended,
    contact factory to order
  • Fill fluid must be compatible with process media; i.e. glycerine may become volatile 
    in conjunction with a strong oxidizing agent such as chlorine, forms of oxygen or 
    peroxide and nitric acids 
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Suitable pressure
gauge sizes
2-1/2", 4", 4-1/2 and 6"
Will also operate with most transducers, transmitters and pressure switches
Minimum span pressure 30 psig
Maximum working pressure Maximum operating pressure is determined by the clamping device and piping system - Please consult factory
Operating temperature Refer to fill fluid expansion factors table

Note: NOSHOK pressure transmitters or transducers are not to be used in heat sterilization system as stated in 3A Standard 74-03 paragraph

 Diaphragm seal must be installed facing downward or in a vertical position for drainability.
 Do not install diaphragm seal facing in an upward position.