Diaphragm Pressure Gauges

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:
Dial Size: 1 1/2" to 6"
Bourdon/Coiled Tube: Germany-Imported SS316 Material.
Movement: 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 Silicone.
Mounting: Lower Mount (Bottom), Back Mount, Back Mount with Flange, Back Mount with U-Bracket.
Pressure Ranges: Vacuum, Compound, 0-1000 bar.
Bezel Type: Standard Crimped Bezel, or Optional Bayonet Ring.
Dial Scales: Standard Dual Scale with kg/cm²/psi, psi/bar, and etc.

Diaphragm Material:
Our standard diaphragm is made of S.S. 316 for upper and lower parts; other requests for special materials, shown below, are acceptable on demand. S.S. 304, P.V.C., F.R.P., Nickel, Hastelloy B&C, Teflon (PTFE), Tantalum, etc.

Liquids Filled:
The selections of the fillings depend on the temperature expected in any given applications. Our standard fillings are glycerine and silicone.

Capillary Tubes:
Standard length of capillary tubes is 3 meters extending up to 10 meters.

Technical Data:
Ranges: vacuum of -1/0 bar; minimum pressure of 1 bar and 400 bar maximum.
Temperature ranges: -20...+200°C (temperature of diaphragm) upto 400°C max.

Photo Gallery

If you are looking for some specific models for your applications, below images might be available possibly; however, they are not all of our products in the case. In case of our products not shown below, please write us directly at ftb@ms3.hinet.net for your requests. Thank you.

325.13.24 + FD-100

764.01.22 + FD-100

323.13.22 + FD-100

PT-75 + FD-300

764.11.22 + FD-100

725.21.24 + FD-300