Tel-Tru Diaphragm Seal for Pressure Gauge, Model W/M/S
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Model W/M/S Diaphragm Seal for Pressure Gauge

Brand: Tel-Tru Manufacturing Co.
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Tel-Tru Diaphragm Seal for Pressure Gauge, Model W/M/S Tel-Tru Diaphragm Seal for Pressure Gauge, Model W/M/S
Model W - Welded diaphragm seals: Protective device used to isolate the pressure instrument from the process fluid being monitored.
  • Diaphragm welded to upper housing to provide high integrity seal
  • Bolts can be removed and seal separated for cleaning, liquid filling, calibration, welding etc. without the loss of fill fluid.
  • Available with flushing connection
  • Maximum pressure rating is psig: 2,500 (kPa: 17,240, bar: 172.4) on threaded type. Stainless steel bolts reduce the maximum working pressure by 50%
Model M - Mini diaphragm seals: Economical Isolator designed to protect smaller gauges from heat corrosion and clogging
  • All-welded construction, no gasketing or bolts
  • For use with most 3-1/2" and smaller gauges [psig: 100 (kPa: 689.5, bar: 6.895) minimum]
Model S - Sanitary diaphragm seals: Designed for food, dairy and pharmaceutical industries to ensure that surfaces exposed to process are virtually crack and crevice free.
  • Diaphragm is welded to the seal housing to provide sanitary type construction
  • Manufactured to meet design, material and fabrication requirements of 3-A Sanitary Standard
  • Seal may be removed from the system without loss of fluid
  • Fits most popular sanitary piping systems including Tri-clover Tri-clamp and others

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Specifications

Brand

Applications

  • Dairy Industry - Model S (Sanitary Diaphragm Seals)
  • Food Industry - Model S (Sanitary Diaphragm Seals)
  • Pharmaceutical Industry - Model S (Sanitary Diaphragm Seals)
  • Pressure Measurement - Model W (Welded Diaphragm Seals)

Diaphragm Material

  • 316L Stainless Steel
  • Hastelloy C
  • Tantalum

Fill Material

  • Fluorolube Oil: -40° to 260° C (-40° to 500° F)
  • Glycerine (Food Grade) -1° to 149° C (30° to 300° F)
  • Halocarbon: -40° to 204° C (-40° to 400° F)
  • Silicone Oil, 350CS (Food Grade): -48° to 260° C (-55° to 500° F)

Flange Size - 1-1/2” (DN 40)

  • 1-1/2” (DN 40) - 150# RF (ANSI B16.5)
  • 1-1/2” (DN 40) - 1500# RTJ (ANSI B16.5)
  • 1-1/2” (DN 40) - 300# RF (ANSI B16.5)
  • 1-1/2” (DN 40) - 600# RF (ANSI B16.5)

Flange Size - 1” (DN 25)

  • 1” (DN 25) - 150# RF (ANSI B16.5)
  • 1” (DN 25) - 1500# RTJ (ANSI B16.5)
  • 1” (DN 25) - 300# RF (ANSI B16.5)
  • 1” (DN 25) - 600# RF (ANSI B16.5)

Flange Size - 2” (DN 50)

  • 2” (DN 50) - 150# RF (ANSI B16.5)
  • 2” (DN 50) - 1500# RTJ (ANSI B16.5)
  • 2” (DN 50) - 300# RF (ANSI B16.5)
  • 2” (DN 50) - 600# RF (ANSI B16.5)

Flange Type

  • Raised Face (RF)
  • RTJ - Ring Typical Joint

Gasket Material

  • Aramid
  • Grafoil
  • Klingersil C-4401
  • Teflon (PTFE)

Instrument Connection

  • 1/2” NPT
  • 1/4” NPT

Materials of Construction

  • Upper Hose Material: 316 Stainless Steel
  • Upper Hose Material: 316L Stainless Steel
  • Upper Hose Material: Carbon Steel

NPT Connection

  • 1” NPT Female
  • 1/2” NPT Female
  • 1/2” NPT Male
  • 1/4” NPT Female
  • 1/4” NPT Male
  • 3” NPT Female
  • 3/4” NPT Female

Nut & Bolt Material

  • Bolt: 304 Stainless Steel, Max.
  • Bolt: Carbon Steel

Pipe Connection

  • 1” Pipe (DN 25)
  • 1/2” Pipe (DN 15)
  • 1/4” Pipe (DN 6)
  • 1-1/2” Pipe (DN 40)
  • 2” Pipe (DN 50)
  • 3/4” Pipe (DN 20)

Pressure Rating

  • psi: 100 to 2,000 (kPa: 690 to 13,790, bar: 6.9 to 137.9) - Model M
  • psig: 2,500 (kPa: 17,240, bar: 172.4) - Max.

Tri-Clamp Connection

  • 1-1/2” Sanitary Clamp
  • 2” Sanitary Clamp
  • 3” Sanitary Clamp

Wetted Materials

  • Lower Hose: 316 Stainless Steel
  • Lower Hose: 316L Stainless Steel
  • Lower Hose: Hastelloy C
  • Lower Hose: Monel

Documentation

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