(+91) 9820305403 fgb.vinesh@gmail.com C-1209-B, Ghatkopar Ind. Est. 2nd Flr, LBS Marg, Ghatkopar W
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Differential Pressure Gauges Manufacturers In India

High Precision Dual-Port Differential Pressure Gauges for Filter Clogging, Flow Orifice & Cleanroom Monitoring

ISO 9001:2015 Certified Manufacturing
IS3624 & EN 837-1 Standards
NABL Traceable Test Calibration
Direct Factory Dispatch Across India
Precision Instrumentation

Differential Pressure Gauges Manufacturers In India

As one of the foremost Differential Pressure Gauges Manufacturers In India, FGB Manufacturing Co. produces cutting-edge DP gauges that measure the differential pressure between two process ports (High and Low). Available in dual Bourdon tube, double diaphragm, and piston-magnetic sensing designs, our DP instruments prevent costly plant shutdowns by alerting operators to blocked filter cartridges and flow anomalies.
  • Dual Bourdon Tube & Opposed Diaphragm Sensing Mechanisms
  • Differential Ranges from 0-250 mmWC up to 0-40 Bar (0-600 PSI)
  • High Static Working Pressure Tolerance up to 100 Bar / 250 Bar
  • Dual High & Low (HP / LP) Process Connections (1/4" NPT/BSP Female)
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Differential Pressure Gauge Manufactured by FGB in India

FGB Precision Assembly: Differential Pressure Gauges Manufacturers In India

Technical Parameters

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")
DP Ranges 0 to 250 mmWC, 0 to 1 Bar, 0 to 2.5 Bar, up to 0 to 25 Bar
Max Static Pressure Up to 100 Bar or 200 Bar (symmetric overload safe)
Accuracy Class ±1.6% FSD (Standard), ±1.0% FSD (Precision optional)
Wetted Parts AISI SS 316 / Monel / Hastelloy
Body Material SS 304 / SS 316 / Die Cast Aluminium
Process Connections 2 x 1/4" NPT(F) or 1/2" NPT(F) with 3-Valve / 5-Valve Manifold
Electric Contacts Optional Reed switch or Inductive proximity alarms
Design Highlights

Key Engineering & Operational Advantages

Built for continuous 24/7 industrial performance, long service life, and unmatched measurement stability.

True Differential Sensing

Directly reads difference between upstream and downstream pressure without separate calculations.

Filter Integrity Guardian

Indicates exactly when air filters, strainers, and RO membranes need cleaning or replacement.

Full Overpressure Protection

Symmetric internal chambers tolerate full static line pressure on one side without damage.

Optional Alarm Switching

Equipped with SPDT microswitches to trip pumps or sirens when DP exceeds setpoint.

Field Applications

Recommended Industries & Operating Environments

Trusted by plant engineers, system integrators, and OEM equipment builders across diverse sectors.

Industrial Baghouse & Air Filter Monitoring
Water Treatment Sand Filters & RO Membranes
HVAC Air Handling Units & Cleanroom Isolation
Orifice Plate & Venturi Flow Measurement
Lube Oil Filter Condition in Turbines
Cryogenic Liquid Level Gauging in Bulk Tanks
Questions & Answers

Frequently Asked Questions (FAQs)

Find answers to common technical queries regarding specifications, selection, calibration, and delivery.

A differential pressure gauge calculates the difference in pressure between two distinct points (HP and LP) in a pipeline, providing a direct reading of filter resistance or fluid flow drop.

FGB differential pressure gauges are designed with internal overpressure protection chambers that safely withstand full static pressure on either the HP or LP port.

Yes, we supply matching 3-valve and 5-valve stainless steel manifolds for zero-balancing, equalization, and calibration.

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Fill in your required quantity and dial specifications. Our technical engineering team will respond within 2 hours with wholesale factory pricing.

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