Featured Solutions Y Strainer Simplex Basket Strainer Duplex Strainer Tee Strainer Automatic Strainer Conical Strainer Suction Diffuser Wafer Strainer Accessories Company Resources Contact us
Fabricated vessel bodies under construction at the Hydrotherms works, Peenya, Bengaluru
The Company

Protection through reliable performance

Flow protection for over two decades — engineered to protect downstream pumps, meters, valves and turbines in severe-service industrial piping systems.

Founded
2006
Works
Peenya, Bengaluru
We make
Strainers only
20+
Years of Flow Protection
97%
Client Retention
150%
Hydrostatic Test Pressure
5yr
Traceability Archive
01 — Who we are

An engineering firm, not a fabrication shop

Hydrotherms is an established Indian engineering and manufacturing firm headquartered in Bengaluru's premier industrial zone, Peenya Industrial Area. For more than two decades we have partnered with process industries to solve severe flow-control and pipeline debris challenges.

We specialise in designing and building high-performance Y-type, simplex basket, duplex twin-basket, tee-type and automatic strainers that provide vital protection for mission-critical downstream equipment — centrifugal pumps, control valves, flowmeters, nozzles, heat exchangers and compressors.

Whether the line is high-velocity steam, a high-pressure gas header, or an aggressive chemical or hydrocarbon service, we deliver custom-engineered straining solutions that prevent costly downtime and keep the process running.

02 — Vision & mission

What we are working towards

Vision

To become the most trusted partner and specialist for critical service and demanding applications.

Mission
  1. Exceed customer expectation by leveraging manufacturing capability and adapting advanced technology to deliver products on time, every time.
  2. Drive innovation in products for reliable solutions, excellence in service, and continuous improvement in process.
  3. Foster dedicated teams that excel in challenging and rewarding environments.
  4. Maintain a commitment to ethics, transparency and environmental protection.
03 — Our customers

We partner with world-class manufacturers

Over two decades of proven performance, serving global OEMs, refiners, EPCs and power producers.

ABB
Yokogawa
Endress+Hauser
BASF
NPCIL
Triveni Turbines
EBARA
BHEL
Flowserve
HAL
VA Tech WABAG
Larsen & Toubro
97%

of our customers have stayed with us over two decades

Logos are the trademarks of their respective owners and are shown to indicate supply history.

04 — Why choose us

How the work is proved

A strainer is a pressure-containing part. What matters is not that it was made carefully, but that it can be shown to have been.

150% hydrostatic verification

Every strainer undergoes a mandatory hydrostatic test at 1.5 times design pressure, per ANSI B16.34 and ASME Section III, to guarantee zero boundary leakage. Our rig runs to 800 bar.

ASME Section IX fabrication

All welding procedures — WPS and PQR — and all welders are certified and qualified strictly under ASME Boiler & Pressure Vessel Code Section IX.

In-house NDE

Qualified ASNT Level II and III personnel execute multi-method examination: radiography by X-ray, Iridium-192 and Cobalt-60; ultrasonic testing; magnetic particle, including wet fluorescent; and liquid and fluorescent penetrant.

Traceability, archived five years

100% material verification against Mill Test Certificates, with individual heat-number tracking retained on file for five years.

A QC plan written for strainers

Not a generic works procedure. Our quality plan is written around strainer failure modes — the screen, the cover joint, the weld — and is issued with the order.

Third-party inspection

Extensive experience delivering equipment released by Lloyd's Register, Bureau Veritas, TÜV, Engineers India Limited and PDIL — and by your own inspector where the specification calls for it.

05 — Infrastructure & capability

What we can actually build

Ranges, not adjectives. Anything outside these is a conversation, not a refusal.

Size and rating

  • Size range: ½″ (15 mm) to 48″+ (1200 mm+)
  • ANSI: Class 150# to Class 2500#
  • DIN / BS 4504: PN6 to PN400
  • End connections: flanged, butt weld, socket weld and screwed
  • Screens: stainless steel, 20 to 400 mesh; perforated and mesh-lined

Materials of construction

  • Carbon steel — WCB, A106
  • Stainless steel — SS304, SS316, SS316L, 904L
  • Duplex and super duplex stainless steel
  • Alloy 20
  • Monel
  • Hastelloy
  • Cast iron
  • Bronze
  • Engineered PVC

Codes and standards

  • ANSI B16.34 — pressure testing
  • ASME Section III — pressure testing
  • ASME Section IX — welding and welder qualification
  • EN 10204 — material certification
  • NACE MR0175 / ISO 15156 — sour service
  • ASNT — NDE personnel qualification

Fabricated bodies are built to drawing where a casting does not exist for the size or the material. Send the line data and we will size it.

06 — Industries

Where our strainers work

The service decides the strainer. These are the sectors we supply.

Petrochemical and refining
Power generation
Nuclear
Chemical process
Pharmaceutical
Food and beverage
Pulp and paper
Water and waste water treatment
Automotive

Service media: water and steam, lubricants, chemicals, fuels and gases.

07 — The works

Peenya Industrial Area, Bengaluru

Hydrotherms manufactures at Peenya Industrial Area in Bengaluru — one of the largest industrial estates in South Asia, and the centre of Karnataka's engineering trade.

Machining, fabrication, welding, assembly, non-destructive examination and pressure testing are all carried out in house. That is what allows a build-to-drawing order to be quoted and delivered against a real programme — and it is why a high-pressure body never has to leave the works to be proved.

Visitors and third-party inspectors are welcome by arrangement.

LocationPeenya Industrial Area, Bengaluru, Karnataka
Established2006
In-houseMachining · Fabrication · Welding · Assembly · NDE · Test
Hydrotest rigTo 800 bar
NDE methodsRT · UT · MPI / WFMT · LPE / FPI
08 — Next step

Talk to us about a line