EN 837
The European standard for Bourdon-tube gauges (EN 837-1) and diaphragm and capsule gauges (EN 837-3): accuracy classes, dimensions and safety.
Pressure gauges, made in Mumbai since 1994
Gauges from very low pressure up to 3000 bar, built to EN 837, ASME B40.100 and IS 3624 and calibrated before dispatch. Tell us the pressure range and the medium, and we will recommend the right gauge.
- Manufacturing since 1994 in Mumbai
- 50+ years of experience in the field
- EN 837, ASME B40.100 and IS 3624 standards
- Up to 3000 bar high-pressure gauges
- 40 mm to 250 mm dial sizes, among the few in India
Trusted by industry leaders
All clients →
Tirupati in numbers
50+
Years of experience
in pressure instrumentation
20,000
Gauges a month
production capacity
15+
Leading PSU and global clients
HPCL, ONGC, BPCL, BARC, ADNOC…
8
Industry sectors served
oil & gas to food and pharma
CertifiedISO 9001ISO 14001ISO 45001CE approval in processIBR approval in process
3000bar
Gauges for pressures few can reach
We are among the few manufacturers in India that can supply pressure gauges up to 3000 bar with world-class accuracy. For hydraulic test rigs, high-pressure pumps and laboratories that need a reading they can trust.
Quality you can verify
Every gauge is built and checked to recognised standards, and comes with the documents your inspectors ask for.
IS 3624
The Indian Standard for Bourdon tube pressure and vacuum gauges, for BIS-specified projects.
ASME B40.100
The American standard for pressure gauges and gauge attachments, for projects specified to ASME.
ISO 9001
Certified quality management system, with ISO 14001 for environment and ISO 45001 for health and safety.
Calibration traceability
Gauges are calibrated against reference standards traceable to national standards.
Test reports
Calibration certificates, test reports and material test certificates for wetted parts are available with your order.
Not sure which gauge you need?
Answer up to 5 quick questions. The Gauge Finder suggests the right gauge from our range, and you can send the result to us for a quote in one tap.
Gauges for every medium and range
Pick the type that matches your process. If you are not sure, send us the details and we will recommend one.
Sealed diaphragm gauges
For corrosive, viscous or clogging media that must not enter the gauge.
Diaphragm gauges
Sensitive readings at low pressure, with a diaphragm instead of a tube.
Compact capsule gauges
Very low pressures for air and non-corrosive gases.
Differential pressure gauges
Pressure drop across filters, strainers and fans.
Glycerine-filled gauges
A steady needle where there is vibration or pulsating pressure.
Stainless steel gauges
Corrosion-resistant cases for harsh and washdown areas.
Test gauges
Precision gauges for checking and calibrating other instruments.
Temperature gauges
Bimetal gauges and capillary-type thermometers.
Gauge accessories
Snubbers, manifolds, needle valves, gauge cocks, siphons and thermowells.
Wetted materials for every medium
The parts that touch your process are made in the material your medium needs. Tell us the medium, pressure and temperature, and we will recommend one.
- SS 304, SS 316 and 316LThe standard choice for water, oil, steam and most process media.
- Hastelloy CStrong acids, chlorides and oxidising chemicals.
- Monel 400Seawater, brine and hydrofluoric acid.
- Duplex (2205)Chloride service, offshore and desalination plants.
- Super Duplex (2507)Seawater and high-chloride offshore service.
- InconelHigh temperatures and oxidising environments.
- TitaniumSeawater, chlorine and wet chlorine gas.
- TantalumVery aggressive acids, such as hot hydrochloric acid.
- PTFE-coated diaphragmCorrosive and sticky media.
- Gold-plated diaphragmHydrogen service, to reduce hydrogen permeation.
- Carbon steel and brassClean, non-corrosive media such as air, water and oil.
Other materials on request. Availability depends on the gauge type and size.
One supplier for the gauge and everything around it
Tirupati Industries was set up in 1994 to supply reliable pressure and temperature gauges. We still work from Dahisar, Mumbai, and still quote by phone or in writing.
- Manufacturing since 1994
- More than 50 years of experience in pressure instrumentation, built up on the shop floor.
- Very high pressure, handled
- Gauges up to 3000 bar, built with a safety-pattern case and made to hold their accuracy.
- Gauge and accessories together
- Order the gauge with its snubber, siphon, cock, needle valve or manifold, so the parts fit and arrive together.
- Materials to suit the process
- From SS 316 to Hastelloy C, Monel 400, Duplex and Super Duplex, so the wetted parts match your medium.
- A direct line to the maker
- Call +91-7045908585 or email sales@tirupatigauges.com with your range, connection and medium. You speak to the people who make the gauges.
TIPCO in under a minute
Our range of pressure and temperature gauges, the standards we build to, and the companies we supply.
Applications of pressure gauges
Where our gauges work, with typical use cases. Have a similar application? Send us the details and we will recommend a gauge.
Hydraulic presses and test rigs
Use case: Reading up to 700 bar on a hydrostatic test bench, with a snubber to absorb pressure spikes.
High-pressure gaugesChemical and petrochemical
Use case: Monitoring an acid dosing line, with a Hastelloy C or PTFE-coated diaphragm seal so the acid never enters the gauge.
Sealed diaphragm gaugesPharmaceutical and food
Use case: A clamp-type diaphragm seal on a purified-water or CIP line that is cleaned and sterilised often.
Sealed diaphragm gaugesWater, pumps and compressors
Use case: Pump discharge pressure at a water treatment plant, glycerine-filled to steady the needle against pulsation.
Glycerine-filled gaugesFilters, HVAC and cleanrooms
Use case: Pressure drop across a filter, or room pressure in mbar in a cleanroom.
Differential pressure gaugesSteam and boilers
Use case: Boiler steam header pressure, with a siphon tube to protect the gauge from live steam.
Siphons and accessoriesOil, gas and offshore
Use case: Seawater injection and offshore lines, with Duplex or Super Duplex wetted parts against chlorides.
Stainless steel gaugesHydrogen and industrial gases
Use case: Hydrogen lines, with a gold-plated diaphragm seal to limit hydrogen permeation.
Sealed diaphragm gaugesCalibration and test labs
Use case: Checking working gauges against a test gauge with a mirror scale.
Test gaugesWhat our customers say
In our customers’ own words, from their satisfaction surveys and feedback letters. Officer names are never shown; private customers are not named.
Customer satisfaction survey, July 2026
- Quality of workGood
- Delivery performanceGood
- Technical competenceGood
- CorrespondenceGood
- Response to complaintsGood
Ratings ticked by the customer on our quality management survey form.
Frequently asked questions (FAQs)
Do you provide diaphragm seals with gold plating?
Yes. We supply diaphragm seals with a gold-plated diaphragm on request. The thin gold layer reduces hydrogen permeation through the diaphragm, so it is used for hydrogen service and for media that release hydrogen. Tell us the medium, pressure and temperature, and we will confirm the right seal.
Which diaphragm and wetted-part materials can you supply?
Standard wetted parts are SS 316 or 316L. For corrosive media we offer Hastelloy C, Monel 400, Duplex, Super Duplex, Inconel, Titanium, Tantalum and PTFE-coated diaphragms on request. Tell us the medium and we will suggest the material.
Are your gauges made to EN 837, ASME B40.100 and IS 3624?
Yes. Our gauges are manufactured to EN 837, ASME B40.100 or IS 3624, as your specification requires. Tell us the standard and accuracy class when you enquire.
Do you supply calibration certificates and test reports?
Yes. A calibration certificate and test report can be supplied with each gauge, with readings at several points of the scale and details of the reference standard used. You can view a sample certificate on our Quality page.
How quickly do you reply to an enquiry?
We reply to quote requests within 1 working day. For urgent needs, call or WhatsApp +91-7045908585, Monday to Saturday, 9:30 am to 6:00 pm IST.
Talk to us your way
Serious enquiries get a fast, direct answer from the people who make the gauges.
INDUSTRIES & PROJECTS
Supporting measurement across essential industries
Application-focused instrumentation for process plants, utilities, infrastructure and industrial projects.
