990.10 带螺纹连接的标准隔膜密封

Description
Pressure rating
PN 25 ... 250 resp. class 150 ... 1500
Suitable pressure ranges
0 ... 0.6 bar to 0 ... 250 bar
Upper housing （instrument connection）
Material stainless steel 316 L, G ½ female
Diaphragm
Material stainless steel 316 L, welded with upper housing
Effective diameter of diaphragm Mb = 52 mm

Sealing ring
FPM （Viton®） max. 200 °C
Lower housing （process connection）
Material stainless steel 316 L, G ½ female
Fastening parts
Retainer flange, hexagonal bolts and nuts:
galvanised steel max. 200 °C

Optional extras
Upper housing （instrument connection）
Stainless steel 1.4571, 1.4541, titanium
Capillary extension （welded with upper housing）
Cooling tower for directly mounted gauge when fluid
temperature > 100 °C

Diaphragm
Stainless steel 1.4571, 1.4435, 1.4539, 1.4541, 1.4462
Hasloy B3, C4, C276, Monel 400, Nickel, lnconel 600,
lncoloy 825, tantalum, titanium, zircon （upper housing
titanium）
Silver foil max. 150 °C
PTFE foil max. 260 °C ≤ 100 bar
PFA coating max. 260 °C
ECTFE （Halar®） coating max. 150 °C

Sealing ring
PTFE （standard with special material diaphragms） for
max. 260 °C
Metal seal form C, stainless steel 1.4571 silver plated
or Inconel silver plated for max. 400 °C

Lower housing （process connection）
Lining or coating of special material
½ NPT female
G ½ B male （lower housing massive）,
½ NPT male, （others feasible）
Other connections on inquiry
Lower housing  with flushing connection

Fastening parts
Retainer flange:  stainless steel 1.4571
（for temperature > +250 °C）
Hexagonal bolts and nuts:
stainless steel, max. 260 °C
high tensile alloy steel, max.  400 °C

Ordering information
Model / Process connection （standard, nominal size, pressure rating） / Material of diaphragm, lower housing, fastening parts
and sealing ring / Instrument connection / Fill fluid / Pressure gauge model / Process conditions as per questionnaire /
Optional extras required