Diaphragm Seals

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Home | Diaphragm Seals | Non-Replaceable | Type 25/25H Standard & Elevated Pressure

 

Type 25/25H Standard & Elevated Pressure, Non-Replaceable Diaphragm Seals

1 Year Warranty

 

  • Designed to isolate the pressure measuring instrument from
    corrosive or viscous process media
  • Utilize an all welded, all metallic housing design to eliminate
    potential leak paths
  • For use with gauges with dial sizes of 2-1/2" and smaller, and pressure
    ranges no less than 100 psig
  • Housing and diaphragm offered in a variety of materials to suit most applications
  • A flushing port is available to clean wetted areas and prevent process
    media build up
  • Consider instrument size, pressure range, media composition, ambient and
    operating temperature, and maximum working pressure when selecting
  • Capillaries and cooling elements are available for elevated process temperatures,
    see accessories
  • Fill fluid must be compatible with process media; i.e. Glycerin may become
    volatile in conjunction with a strong oxidizing agent such as chlorine, forms of
    oxygen or peroxide and nitric acids
Tech Manual 

 

ORDERING INFORMATION

TYPES 25 (2,500 psi) 25H (5,000 psi)    
INSTRUMENT CONNECTION SIZES 02 1/4" NPT 04 1/2" NPT    
UPPER HOUSING MATERIALS M Monel 400 P Carpenter 20 S 316 Stainless steel
DIAPHRAGM MATERIALS H Hastelloy C-276 P Carpenter 201    
M Monel 4001 S 316 Stainless steel    
PROCESS CONNECTION SIZES 02 1/4" NPT 04 1/2" NPT    
LOWER HOUSING MATERIALS H Hastelloy C-276 P Carpenter 20    
M Monel 400 S 316 Stainless steel    
FLUSHING CONNECTIONS 1F 1/8" NPT 2F 1/4" NPT    

    NOTE: For process temperature over 212 °F, a capillary or cooling element is recommended. Contact NOSHOK factory to order.
    1 When selecting a Monel or Carpenter 20 Diaphragm, the upper and lower housing must be the same material.


WARNING: This product can expose you to chemicals including Chromium (VI) and Nickel, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

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