Vasundhara Performance Solutions is the authorised Hyderabad supplier for Veedol Therol heat transfer oils — mineral-base thermic fluids engineered for closed-loop indirect heating in thermic-fluid heater systems. ISO VG 22-32 range covering bulk operating temperatures up to 320°C (film temperature up to 340°C) per ISO 6743-12 L-QC and DIN 51522 specifications. For textile-finishing thermic heaters, pharma reactor jackets, chemical process columns, food-processing kettles, and bulk-API production indirect heating. Pan-India dispatch from Secunderabad warehouse in 210 L drums, 1000 L IBC totes, and bulk tankers for large installations.
Request Therol HT Quote Call: +91-9912825442Veedol's mineral-base thermic-fluid range — Therol HT for standard indirect heating, plus specialty grades for higher-temperature service.
ISO VG 22 mineral heat-transfer oil for thermic-fluid heater systems. Bulk operating up to 300°C, film temperature up to 320°C. Low viscosity for excellent pump-circulation. Used in textile dyeing-finishing thermic heaters, smaller process kettles.
ISO VG 32 mineral heat-transfer oil — the workhorse Veedol thermic fluid. Bulk operating up to 320°C, film temperature up to 340°C. Per ISO 6743-12 L-QC + DIN 51522 spec. The default for Indian thermic-fluid heater installations across textile, pharma, chemical, food-processing.
Higher-grade Therol variant with extended oxidation-stability additive package. For installations operating continuously at upper end of mineral-base capability (315-320°C bulk). Drain interval extended 30-50% over standard Therol HT 32 in equivalent service.
Synthetic-base thermic fluid (PAO or modified diphenyl) for installations requiring bulk operating above 320°C, or where extended-drain (10,000+ hours) economics justify the premium. Specialty supply, lead time 5-10 days.
Top-up supply for existing installations — same-grade Therol HT 32 for system replenishment. Per-batch certification supports continuous-operation thermic plants where mid-cycle change isn't feasible. Same-day dispatch from stock.
Periodic Therol sample analysis — viscosity drift, TAN/TBN, water content, particle count, oxidation markers. Optimises drain intervals (typically 4,000-12,000 hours depending on service) and catches degradation before equipment damage.
Standard property values across the range. TDS / MSDS / per-batch COA available on enquiry.
| Property | Test Method | Therol HT 22 | Therol HT 32 | Therol Synthetic |
|---|---|---|---|---|
| Kinematic Viscosity at 40°C (cSt) | ASTM D445 | 19-25 | 28-35 | 30-40 |
| Kinematic Viscosity at 100°C (cSt) | ASTM D445 | ≥4.0 | ≥5.0 | ≥6.5 |
| Viscosity Index | ASTM D2270 | ≥95 | ≥95 | ≥120 |
| Flash Point (°C, COC) | ASTM D92 | ≥210 | ≥220 | ≥250 |
| Pour Point (°C) | ASTM D97 | ≤-12 | ≤-12 | ≤-30 |
| Density at 15°C (kg/L) | ASTM D4052 | 0.84-0.88 | 0.85-0.88 | 0.82-0.86 |
| Bulk Operating Temp Limit (°C) | Manufacturer | 300 | 320 | 350 |
| Film Temperature Limit (°C) | Manufacturer | 320 | 340 | 370 |
| Typical Drain Interval (hours) | — | 4,000-8,000 | 5,000-10,000 | 10,000-15,000 |
Standards compliance: ISO 6743-12 L-QC (mineral heat-transfer fluid) · DIN 51522 (Q heat-transfer oil) · IS 1448 P 33 (Indian standard heat-transfer fluid) · Suitable for installations per IBR / OSHA / OISD process-heating equipment codes
Where Veedol Therol heat transfer oils ship from our Hyderabad warehouse — by application + industry segment.
Therol HT 32 for thermic-fluid heaters powering stenter ranges, polymerisation chambers, dyeing baths, and finishing-line drying tunnels. Bulk operating 200-280°C. Coimbatore + Tirupur textile cluster + Hyderabad textile-finishing units. Largest single Therol application segment in India.
Therol HT 32 for pharma reactor jackets, distillation column reboilers, indirect-heating in bulk-API and intermediates manufacturing. Genome Valley + Bachupally pharma cluster. Used where direct-steam heating isn't suitable (vacuum operation, very-precise temperature control).
Therol HT 32 + Premium grade for distillation columns, reactor heating, intermediate-storage tank heating. Reliance, Tata Chemicals, BASF India, Aarti Industries. Continuous-operation plants benefit from extended-drain Premium grade.
Therol HT 32 for indirect heating in vegetable-oil refining, sugar processing (juice-kettle heating), edible-oil hydrogenation reactors, dairy processing UHT systems. Compliance with food-equipment safety requirements (no direct contact with product).
Therol HT 32 for asphalt-plant aggregate-drying drum heating, bitumen storage tank heating, road-construction plant heaters. Asphalt road contractors + bitumen distributors. Seasonal demand peak during construction season (October-May).
Premium / Synthetic grades for highest-temperature continuous-operation specialty chemical and bulk-API plants. Drain-interval extension drives total-cost-of-ownership. Tier-1 specialty chemical manufacturers across Vizag + Tirupati + Hyderabad chemical-process belt.
Heat transfer oil selection drives drain interval, energy efficiency, and system varnish formation. Veedol's mineral-base Therol family delivers proven multi-year service across Indian thermic-fluid heater installations.
Stocked grades ship same-day from Secunderabad warehouse. Specialty / synthetic variants typically 3-5 working days. Pan-India dispatch via authorised transport network.
Genuine Veedol product through manufacturer-authorised supply. Manufacturer authorisation documentation provided on enquiry. Per-batch traceability for warranty + audit-trail compliance.
Viscosity selection, drain-interval optimisation, cross-equivalence mapping with competitor brands, contamination-event troubleshooting. Free for projects where Vasundhara is the supply partner.
Bundle Veedol products with our wider lubricant + grease + speciality-fluid portfolio. One PO, simplified GST reconciliation, single accountable contact for plant-wide supply.
Per-batch test certificates (TDS, MSDS, COA), manufacturer authorisation letters, BIS conformance reports where applicable. Suitable for ISO 9001 / IATF 16949 / pharma audits. Pre-shipment sample retention available.
Periodic sample analysis — viscosity, TAN/TBN, water content, particle count (ISO 4406), wear-metal spectrometry. Optimises drain intervals (typically 20-40% extension over manufacturer defaults) + catches failure modes early.
Standard packaging across the range. Bulk pricing on volumes >1,000 L.
| Pack Format | Volume | Typical Use Case |
|---|---|---|
| Pail (HDPE) | 20 L | Single-machine top-up, sample-and-trial orders |
| Drum | 50 L | Mid-duty maintenance stock |
| Barrel (steel) | 210 L | Plant maintenance stores standard |
| IBC Tote | 1000 L (1 MT) | Bulk supply for high-volume users |
| Bulk Tanker | 3,000-5,000 L+ | Direct-to-tank delivery, large plants |
Visit Our Office: H.No. 10-2-309, Flat No. 201, Sudha Vaishnavi Residency, Street No. 4, West Marredpally, Secunderabad, Telangana 500026 | View on Google Maps
Common questions from textile, pharma, chemical and food-processing buyers sourcing Veedol Therol heat transfer oils through Vasundhara.
Therol HT 22 (ISO VG 22, lower viscosity) is engineered for thermic-fluid systems where pump circulation efficiency matters most — smaller textile dyeing thermic heaters, lower-temperature process kettles. Therol HT 32 (ISO VG 32) is the higher-viscosity workhorse for standard industrial thermic-fluid systems operating up to 320°C bulk temperature. HT 32 has slightly better load-carrying capacity at high temperature and longer drain interval. For most Indian textile + pharma + chemical thermic systems, HT 32 is the default choice.
Therol HT 32 typically delivers 5,000-10,000 hours of service life in well-maintained thermic-fluid systems operating at 250-280°C bulk. At higher bulk temperatures (300-320°C) drain interval shortens to 4,000-7,000 hours. Premium-grade Therol with extended oxidation-stability package delivers 30-50% longer drain intervals. Drain timing should be set by sample analysis (viscosity drift > 10%, TAN doubling from baseline, oxidation markers rising) — not calendar.
Discoloured (brown to black) or burnt-smelling Therol indicates: (1) film temperature exceeded the oil rating (check burner control, heater coil cleanliness, low-flow zones); (2) extended use beyond drain interval (schedule sample analysis); (3) wrong grade selected for the operating temperature (verify against Therol grade temperature limits); (4) water contamination causing thermal degradation in the boiling zone. Excessive degradation requires root-cause investigation before refilling — repeated overheating destroys whatever fresh oil you put in.
No — Therol HT 32's bulk operating limit is 320°C (film temperature limit 340°C). Operations above 320°C require either Therol Synthetic (PAO-based, suitable up to 350°C bulk) or alternative synthetic thermic-fluid chemistry (Therminol VP-1, Dowtherm A — both are different chemistry). Operating mineral-base Therol above its temperature rating leads to rapid oil degradation, carbon-deposit formation, and eventual heater coil fouling. Always match grade to actual operating temperature, with margin for upset conditions.
Veedol Therol HT 32 is generally compatible with equivalent Mobil Mobiltherm 600 / Shell Heat Transfer Oil S2 / Total Seriola for top-up purposes (both are ISO 6743-12 L-QC mineral chemistries). Top-up volumes <15-20% of system capacity rarely cause issues. For full performance benefit + clean baseline before sample-program tracking, full system flush + change is recommended when transitioning between brand families. Vasundhara's technical team supports the changeover plan when we are the supply partner.
Standard quarterly sample analysis: (1) Kinematic viscosity at 40°C — drift >10% from baseline = drain trigger; (2) TAN (Total Acid Number) — doubling from baseline = drain trigger; (3) Water content (Karl Fischer) — >500 ppm = trigger; (4) Particle count (ISO 4406) — worse than 19/17/14 = trigger; (5) Oxidation marker (FTIR) — rising carbonyl absorbance indicates degradation. Sample cost: ₹1,500-2,500 per sample. Vasundhara coordinates with major Indian lubrication labs for our supply customers.
Yes. Standard Veedol Therol packaging is 210 L drums + 1,000 L IBC totes for mid-volume installations. Bulk-tanker delivery (5,000-25,000+ L) for large textile-mill thermic-fluid systems + chemical-process plants + bulk-API installations. Pan-India dispatch from our Secunderabad warehouse — 48-72 hour delivery across South India + 5-7 days pan-India. Bulk pricing on volumes >5,000 L.
Yes. Vasundhara Performance Solutions Pvt Ltd is the authorised Veedol industrial lubricant distributor for Hyderabad, Telangana, Andhra Pradesh, Karnataka, Tamil Nadu and South India. We supply genuine Veedol Therol heat transfer oils manufactured by Tide Water Oil Co. (India) Ltd, with full manufacturer authorisation documentation provided on enquiry. See our complete Veedol portfolio at our Veedol brand page.
Complete Veedol industrial portfolio supplied by Vasundhara — single-vendor sourcing for plant-wide lubricant kit.
Tell us your thermic-fluid heater capacity, operating bulk + film temperature, current oil + drain interval, and quantity. We'll respond with rate-contract pricing, sample-program inclusion, and lead times within one business day.
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