Allweiler® NTT Hot Oil Pump Replacements: Save 40%–55% Direct from Factory
Eliminate expensive cooling water infrastructure in high-temperature heat transfer systems. Orbi Pump RY series air-cooled thermal oil pumps are engineered as direct 1:1 footprint equivalents for Allweiler® NTT and NTWH series. Operating up to 350°C (662°F), the specialized aerodynamic finned bearing frame naturally dissipates heat before it reaches the mechanical seal and grease-lubricated deep groove ball bearings.
Allweiler® / CIRCOR Replacement Model Matrix
100% flange & footprint interchangeability
| OEM Model | Orbi Pump Equivalent | Flow (m³/h) | Pressure | Port / Flange | Speed | Action |
|---|---|---|---|---|---|---|
Allweiler NTT 32-160 Direct drop-in for chemical reactor heating and pilot plant thermal loops. | Orbi Pump RY 32-160 | 4.5 ~ 15.0 (19.8 ~ 66.0 gpm) | 0.32 ~ 0.50 (Head: 32m) MPa (46 ~ 72 psi) | DN50 Suction / DN32 Discharge | 2900 rpm | Specs → |
Allweiler NTT 40-200 Standard unit for textile stenter frames and plywood press machines. | Orbi Pump RY 40-200 | 10.0 ~ 25.0 (44.0 ~ 110.0 gpm) | 0.45 ~ 0.55 (Head: 50m) MPa (65 ~ 80 psi) | DN65 Suction / DN40 Discharge | 2900 rpm | Specs → |
Allweiler NTT 50-200 Direct replacement for asphalt mixing plants and synthetic resin heating loops. | Orbi Pump RY 50-200 | 18.0 ~ 50.0 (79.2 ~ 220.0 gpm) | 0.45 ~ 0.55 (Head: 50m) MPa (65 ~ 80 psi) | DN65 Suction / DN50 Discharge | 2900 rpm | Specs → |
Allweiler NTT 65-200 High flow hot oil circulation pump for industrial boilers. | Orbi Pump RY 65-200 | 35.0 ~ 80.0 (154.0 ~ 352.0 gpm) | 0.45 ~ 0.55 (Head: 50m) MPa (65 ~ 80 psi) | DN80 Suction / DN65 Discharge | 2900 rpm | Specs → |
Allweiler NTT 100-250 Heavy duty central thermal oil plant circulation pump. | Orbi Pump RY 100-250 | 80.0 ~ 180.0 (352.0 ~ 792.0 gpm) | 0.60 ~ 0.80 (Head: 80m) MPa (87 ~ 116 psi) | DN125 Suction / DN100 Discharge | 2900 / 1450 rpm | Specs → |
Mechanical Compatibility & Heavy-Duty Metallurgy
Aerodynamic Air-Cooled Bearing Frame
Specially spaced cooling fins dissipate heat via natural convection and motor fan draft. Seal chamber temperature remains under 100°C even when pumping 350°C thermal fluid.
Dual Seal Safety Architecture
Primary imported high-temp SiC/SiC metal bellows mechanical seal paired with a secondary safety packing gland prevents catastrophic thermal oil blowouts.
100% ISO 2858 & DIN 24256 Compliance
Flange centerline heights, casing foot positions, and pipe connection dimensions match European hot oil standards for direct drop-in replacement.
Allweiler® / CIRCOR OEM vs Orbi Pump Replacement
| Comparison Point | Allweiler® / CIRCOR (OEM) | Orbi Pump (Direct Factory) |
|---|---|---|
| Complete Pump Unit Price | OEM Premium ($4,200 – $14,000+ USD) | Direct Factory ($1,400 – $4,800 USD) — 50%–65% Savings |
| Cooling Water Requirement | Air-cooled (NTT) or water-cooled (NBT) | 100% Air-Cooled up to 350°C — zero water piping |
Core Orbi Pump Series for Allweiler® / CIRCOR Replacement
Allweiler® / CIRCOR Replacement Engineering FAQs
Q: Is the mounting footprint identical to Allweiler NTT series?
A: Yes. The RY series strictly complies with ISO 2858 and DIN 24256 standards. Port centerline heights, flange drillings, and baseplate bolt centers are 100% interchangeable with Allweiler NTT models.
Q: What type of mechanical seal is used to handle 350°C thermal oil safely?
A: We install high-temperature welded metal bellows mechanical seals with silicon carbide (SiC vs SiC) friction faces, backed by secondary high-temperature flexible graphite packing to guarantee zero hazard leakage.
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⚖️ Trademark Disclaimer: Allweiler® is a registered trademark of Allweiler GmbH / CIRCOR International. Orbi Pump is an independent manufacturer of industrial thermal oil and process pumps. All manufacturer names, numbers, and descriptions are used solely for reference purposes.