FTB Diaphragm Seals are especially suitable for pressure sources with
corrosive acids, fluids or sticky compounds combined where pressure
sources might harm the gauges directly. They are widely used in
petroleum, food, chemical, and pharmaceutical industries.
General Specs of Gauges
Dial Size: 1 1/2" to 6"
Bourdon/Coiled Tube: Germany-Imported SS316 Material.
Germany-Imported SS430 Material.
Internals & Socket: SS316 Material.
Accuracy: ±2% on 1 1/2" and 2", ±1.5% on 2 1/2", 4",
±1% on 6".
Liquid-Filled: Imported 99.95% Purity Glycerin, or Optional
Mounting: Lower Mount (Bottom), Back Mount, Back Mount with
Flange, Back Mount with U-Bracket.
Pressure Ranges: Vacuum, Compound,
Bezel Type: Standard Crimped Bezel, or Optional Bayonet
Dial Scales: Standard Dual Scale with kg/cm²/psi, psi/bar, and
Our standard diaphragm is made of S.S. 316 for upper and lower parts;
other requests for special materials, shown below, are acceptable on
S.S. 304, P.V.C., F.R.P., Nickel, Hastelloy B&C, Teflon (PTFE),
The selections of the fillings depend on the temperature expected in any
given applications. Our standard fillings are glycerine and silicone.
Standard length of capillary tubes is 3 meters extending up to 10
Ranges: vacuum of -1/0 bar; minimum pressure of 1 bar and 400 bar
Temperature ranges: -20...+200°C (temperature of diaphragm) upto 400°C
FD-100 Series with s.s. 316 upper and lower housing and s.s. 316L
FD-200 Series (double-flanged) diaphragms with S.S. 316/304
structured. Flange selections of JIS 5K, 10K, or ANSI 150 series are
available. 1/2"-2" connections applied.
FD-300 Series (flange type) with SS 316 housing. Flange selections
of JIS 5K, 10K, or ANSI 150 series are available. 2"-4" connections
Special Diaphragm with Customized designs for various applications,
such as food processing and medical industries.
Diaphragm Seals with Capillary are available on FD-100 and FD-300
series. Standard length of capillary is 3 meters extending up to 10
E-Catalog Online Page 1 >
E-Catalog Online Page 2
316 Ti Stem for long-lasting life span to be exposed under extreme
components make the accuracy accurate.