Flush Type Flanged Diaphragm Seal

Flush type flanged diaphragm seal

Features

• Welded diaphragm seal

• Variety of wetted parts materials

• Filling port in the upper housing

• Suitable for pressure gauges, switches and transmitters

Flange size

From DN25 up to DN100

From 2" up to 4"

Pressure rating

From PN16 up to PN400

From 150 lbs up to 2500 lbs

Applications

Chemical and petrochemical industry

Machine and apparatus construction

Offshore installations

Waste water treatment

 

 

 

Technical specification	DF
Process connection size, flanged rating	2", 3", 4", DN25, DN50, DN80, DN100, others on request Rating ANSI EN 150 lbs, 300 lbs, 600 lbs, 900 lbs, 1500 lbs, 2500 lbs PN16, PN40, PN63, PN100, PN160, PN250, PN400
Construction  Fill port	Machined flange with welded flush diaphragm  In hexagon of instrument connection with stainless steel ball and set screw
Measuring principle	Diaphragm welded to flange, optional alloys welded over sealing surface, or optional vacuum proof foils glued over diaphragm and sealing surface
Instrument connections (female) ANSI/ASME ISO 228-1	½ NPT  G ½, others on request
Sealing surfaces ANSI/ASME EN	B16.5 RF, optional RTJ  EN 1092-1 Form B1
Material (wetted parts) Flange Diaphragm	Stainless steel 316Ti (1.4571) Diaphragm Stainless steel 316L (1.4435), optional welded Tantalum, Hastelloy B2, Hastelloy C276, Monel 400, others on request, optional glued vacuum proof foils PTFE, silver, others on request
Material (non wetted parts) Flange Instruments connection Capillary and armor	Stainless steel 316Ti (1.4571) Stainless steel 316Ti (1.4571) Stainless steel 316Ti (1.4571) and stainless steel 304 (1.4301)
Accuracy	Additional 0,5 percent to the specified tolerance of the mounted instrument
Minimum range span (100=T5500)	dm 28 = 6 bar, dm 38 = 1,6 bar, dm 52 = 1 bar, dm 80 = 0,6 bar
Filling liquids (temperature range)	Glycerin ({{{{20}}}}/400 degree F, -18/204 degree - not for vacuum or compound ranges) Silicone (-40/600 degree F, -40/315 degree ), Halocarbon (-70/300 degree F, -56/149 degree ) Syltherm 800 (-40/750 degree F, -40/400 degree ), Vegetable oil (32/248 degree F, 0/120 degree ), Neobee M-20 (0/320 degree F, -17/160 degree ), others on request, also depending on selected material and configuration
Mounting	Direct, optionally with capillary
Weight dry kg	Depending on flange size
Accessories, options	Flushing ring, pressure gauges, pressure switches, cooling element, capillaries

 

 

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