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Diaphragm Sealed Pressure Gauge Manufacturers In India
- Direct, Remote Capillary, or Flanged Chemical Diaphragm Assemblies
- Diaphragms in SS 316L, Hastelloy C-276, Monel, Tantalum, Titanium & PTFE
- ANSI B16.5 150# / 300# / 600# Flanged and Threaded Connections
- Food Grade (FDA Approved) Silicone / Neobee Fluid for Pharma & Dairy
FGB Precision Assembly: Diaphragm Sealed Pressure Gauge Manufacturers In India
Standard Technical Specifications
Engineered to satisfy demanding industrial criteria. Review our standard parameter ranges or request custom connection threads, dial branding, and special wetted alloys.
| Specification Parameter | Standard Technical Values / Manufacturing Options |
|---|---|
| Dial Sizes | 100mm (4"), 150mm (6") |
| Pressure Ranges | -1 to 0 Bar (Vacuum) up to 0 to 400 Bar |
| Seal Types | Threaded ("I" section), Flanged ("I" section / Sandwich), Flush Diaphragm |
| Diaphragm Materials | SS 316L, Hastelloy-C, Monel 400, Tantalum, PTFE Coating / Lining |
| Top & Bottom Chamber | SS 304 / SS 316 / Carbon Steel / PTFE Lined |
| Flange Standards | ANSI B16.5 1/2" to 3" (Class 150 to 600), DIN / BS 4504 |
| System Fill Fluid | DC-200 Silicon Oil (-40 to +200°C), High Temp Oil (up to +350°C), Food Grade |
| Accuracy Class | ±1.0% FSD (or ±1.6% FSD with remote capillary) |
Key Engineering & Operational Advantages
Built for continuous 24/7 industrial performance, long service life, and unmatched measurement stability.
Complete Process Isolation
Flexible diaphragm prevents corrosive fluids, slurries, and paints from entering the bourdon tube.
Anti-Clogging Flush Design
Flush diaphragm eliminates cavities where viscous paints, polymers, and food pulps can solidify.
Wide Material Metallurgy
High alloy foils (Hastelloy, Tantalum, PTFE) protect against hydrochloric, sulfuric, and nitric acids.
Remote Capillary Extension
Enables mounting dial at eye level away from hot or vibrating reactor nozzles.
Recommended Industries & Operating Environments
Trusted by plant engineers, system integrators, and OEM equipment builders across diverse sectors.
Frequently Asked Questions (FAQs)
Find answers to common technical queries regarding specifications, selection, calibration, and delivery.
Process pressure pushes against a flexible metallic or PTFE diaphragm. The diaphragm deflects and transfers pressure through an incompressible transmission fluid (such as silicone oil) directly into the gauge’s bourdon tube.
PTFE lining is recommended when dealing with aggressive acids (like hydrochloric acid, hydrofluoric acid, or wet chlorine) that attack standard stainless steel.
Yes, FGB provides complete recalibration, helium leak testing, and vacuum oil refilling services at our Mumbai factory.
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