UIPL HYDROFORGE™
Diesel-Driven Single-Stage Centrifugal Pumping Sets
Single-stage end-suction centrifugal pumps — 100 mm (4") & 150 mm (6") ports, semi-open cast iron impeller, mechanical shaft seal, 1500 RPM. Stationary base-frame and trolley-mounted variants.
Performance Testing & Validation
Every HYDROFORGE pump set is tested in-house against standardized Q-H, efficiency, power, and NPSH parameters before dispatch.
Q–H Curve
4×4Efficiency Curve
4×4Power Consumption
4×4NPSH Required
4×4Pump Configurations
Both sizes designed for heavy duty continuous operation with single or twin-cylinder diesel engines.
HYDROFORGE — Stationary Base-Frame Sets
Rigid base-frame mounted diesel-driven centrifugal sets. Engine and pump bolted to a common fabricated steel channel base — suited for fixed installations, canal-side pumphouses, and sump pit mounting.
HYDROFORGE — Trolley Mounted Sets
Same hydraulic ratings as base-frame models, mounted on a welded MS tubular chassis with pneumatic-tyred wheels and a folding drawbar hitch. Purpose-built for field mobility — irrigation, construction dewatering, and rapid deployment applications where the pump must move with the work.
Specifications Comparison
HYDROFORGE Pumping Sets — Hydraulic & Mechanical Reference
| Config | Port Size | BEP Flow | BEP Head | Peak Efficiency | Max Suction Lift | NPSHr @ BEP | Engine HP | Speed | Seal Type |
|---|---|---|---|---|---|---|---|---|---|
| 6×6 | 150 mm (6") | ~35 m³/h | ~21 m | ~68% | 6.5 m (MSL) | ~3.0 m | 7 – 20 HP | 1500 RPM | Mech. seal |
| 4×4 | 100 mm (4") | ~15 m³/h | ~22 m | ~65% | 6.5 m (MSL) | ~2.0 m | 5 – 15 HP | 1500 RPM | Mech. seal |
| Trolley 6×6 | 150 mm (6") | ~35 m³/h | ~21 m | ~68% | 6.5 m (MSL) | ~3.0 m | 7 – 20 HP | 1500 RPM | Mech. seal |
| Trolley 4×4 | 100 mm (4") | ~15 m³/h | ~22 m | ~65% | 6.5 m (MSL) | ~2.0 m | 5 – 15 HP | 1500 RPM | Mech. seal |
Pump Duty Point Selector
Enter your required flow, total head, fluid temperature, and site altitude. The selector checks both HYDROFORGE models against their Q–H envelopes, estimates pump efficiency and shaft power at your duty point, and flags NPSH and altitude-adjusted suction limits.
Key Features
Single-Stage Radial-Flow Centrifugal
Volute casing with semi-open cast iron impeller. Hydraulic design follows IS 5120 / ISO 9906 performance criteria. No valves in flow path — wide clearance passage handles slightly turbid irrigation water without blockage.
Mechanical Shaft Seal
Carbon/ceramic face mechanical seal rated 0.6 MPa and 80°C. Zero continuous leakage; eliminates re-packing downtime. Gland packing variant available on request for abrasive or slurry service — seal housing designed for retrofit without shaft removal.
Flexible & Direct Coupling
Flexible (Lovejoy jaw-type) coupling absorbs ±2–3° angular and ±1 mm parallel misalignment, isolating torsional pulsation from the engine. Direct flanged coupling for precision-aligned high-power installations requiring zero backlash and rigid torque transmission.
NPSH & Suction Performance
Max suction lift 6.5 m at MSL — derate 0.12 m per 100 m elevation. NPSHr at BEP: 2.0 m (4×4) and 3.0 m (6×6). System NPSHa must exceed NPSHr by ≥ 0.5 m margin to prevent cavitation, impeller erosion, and head breakdown.
V-Belt Drive (Optional)
B-section V-belt with adjustable centre distance and tensioner. Speed ratio range 1:1 – 1.2:1 allows pump speed reduction for high-flow / low-head duties without throttle losses. Supplied with fabricated sheet-metal belt guard to BS EN 953.
Trolley Chassis — Field Mobility
Welded MS tubular frame, hot-dip galvanized, rated for combined engine + pump static load with 2× dynamic factor. Pneumatic-tyred wheels (5.00-8), folding drawbar hitch, anti-vibration rubber mounts between engine/pump and chassis. Balanced single-axle geometry for hand-towing on rough terrain.
Preventive Maintenance Schedule
Recommended service intervals for HYDROFORGE diesel pumping sets in continuous-duty agricultural / irrigation use at rated load. Reduce all intervals by 30% in dusty, abrasive, or high-humidity environments.
HYDROFORGE — Pump Set Maintenance Intervals
Engine hours at rated load · IS 5120 / manufacturer guidelines · reduce by 30% in harsh environments
| Item / System | Sub-system | Daily | 50 h | 250 h | 500 h | 1000 h |
|---|---|---|---|---|---|---|
| Engine Oil Level | Lubrication | ✓ | ||||
| Engine Oil Change | Lubrication | S | S | |||
| Air Filter | Fuel System | ✓ | C | R | ||
| Fuel Filter | Fuel System | ✓ | R | |||
| Mechanical Shaft Seal — leakage | Pump | ✓ | ✓ | R | ||
| Pump / Engine Bearings | Rotating Assembly | G | G | R | ||
| Flexible Coupling Spider Element | Drive | ✓ | R | |||
| V-Belt Tension (if fitted) | Drive | ✓ | A | R | ||
| Shaft Alignment | Drive | ✓ | V | |||
| Valve Clearance | Engine | A | ||||
| Suction Foot Valve / Strainer | Hydraulics | ✓ | C | |||
| Impeller Running Clearance | Pump | ✓ | A | |||
| Foundation / Frame Bolts | Structure | T | T |
Hydraulic Design Parameters
Reference data for the HYDROFORGE centrifugal pump range at rated speed (1500 RPM). All values per IS 5120 / ISO 9906 test standard.
Materials of Construction
Full material specification for HYDROFORGE pump set wetted parts, rotating assembly, drive components, and structure — referenced to Indian and equivalent international standards.
HYDROFORGE — Component Material Specification
| Component | Material | Standard / Grade | Key Property / Notes |
|---|---|---|---|
| Pump Casing (Volute) | Grey Cast Iron | IS 210 Gr. FG 200 | Min UTS 200 MPa; excellent machinability and pressure tightness |
| Impeller (Semi-open) | Grey Cast Iron | IS 210 Gr. FG 200 | Balance holes for axial thrust relief; wide passage for slightly turbid water |
| Wearing Ring | Grey Cast Iron | IS 210 Gr. FG 150 | Replaceable; radial running clearance 0.3–0.5 mm at assembly |
| Back Plate | Grey Cast Iron | IS 210 Gr. FG 200 | Machined seal seating face; spiral groove vent to atmosphere |
| Pump Shaft | Medium Carbon Steel | EN8 / IS 1570 Pt.2 C45 | Induction-hardened journals; 200–230 HB; ground to h6 tolerance |
| Mechanical Shaft Seal | Carbon face / Ceramic seat + NBR elastomers | DIN 24960 equivalent | Rated 0.6 MPa / 80°C; carbon–SiC option for hot or aggressive fluids |
| Radial Bearings | Deep-groove ball bearings | IS 6455 / 6206 – 6207 | 2RS grease-sealed; L₁₀ life ≥ 25,000 h at rated radial load |
| Flexible Coupling Hubs | Cast Iron / SG Iron | Lovejoy GR / L-series | Jaw-type; absorbs ±2–3° angular and ±1 mm parallel misalignment |
| Coupling Spider Element | Polyurethane (PU) | Shore 95A — NBR option available | Torsional stiffness ~55 Nm/rad; electrically isolating; field-replaceable without disturbing alignment |
| Common Base Frame | Mild Steel Channel | IS 2062 Gr. E250A | Hot-dip galvanized IS 2629; pre-drilled for grouted anchor bolts |
| Trolley Chassis | MS Square / Rect. Tube | IS 4923 / IS 1239 Pt.2 | Hot-dip galvanized; rated 2× combined engine + pump static load (dynamic factor) |
| Suction / Delivery Flanges | Grey Cast Iron | IS 1538 Table 6 (PN 10) | Flat-face; compatible with rubber-lined butterfly and gate valves |
| External Fasteners | Alloy Steel | IS 1364 Gr. 8.8 | Zinc-phosphate coated; hex head, full-thread per IS 1367 |
| Protective Coating | Epoxy primer + PU topcoat | IS 2339 / IS 14997 | Exterior grade; DFT 80–100 µm; RAL 6018 yellow-green standard finish |
Applications
Irrigation
Flood irrigation, sprinkler systems, and canal water lifting for farms
Water Supply
Rural and village water supply networks, tank filling, and distribution
Construction
Dewatering, slurry transfer, and on-site water supply for construction projects
Fire Fighting
Portable fire fighting pump sets for rural areas and remote locations
Industrial Transfer
Factory water circulation, cooling systems, and process water transfer
Export Markets
Proven across Africa, Middle East, and South Asia for diverse field conditions
Installation & Safety
Installation Guidelines
- Foundation: Mount on a level concrete plinth or steel sub-frame. Grouted anchor bolts or anti-vibration pads (Shore 40–60A durometer) between base-frame and foundation.
- Alignment: Check angular and parallel alignment using dial indicator after final bolting. Max angular misalignment: ±0.05 mm/100 mm; parallel: ±0.1 mm. Re-check after first 4 hours of run-in.
- Suction piping: Keep suction line as short and straight as possible. Suction pipe diameter ≥ pump suction flange size. Install eccentric reducer (flat side up) to avoid air pockets. Max velocity in suction line: 1.5 m/s.
- Foot valve & strainer: Use a foot valve with strainer (free area ≥ 2× pipe bore) to maintain prime. Submerge foot valve ≥ 300 mm below minimum water level to prevent vortex air ingestion.
- Priming: Fill pump casing and suction pipe completely before starting. Never start on an empty casing — mechanical seal requires liquid film for lubrication.
- Discharge valve: Start against a partially closed discharge valve to limit starting load, then open progressively to duty point. Do not run at shut-off head for more than 30 seconds.
Safety & Operating Limits
- No dry running: Mechanical seal faces depend on liquid film for cooling. Dry run exceeding 5 seconds will thermally crack the ceramic face — seal replacement mandatory.
- Cavitation: Operating significantly left of BEP (below ~50% of BEP flow) risks cavitation. Warning signs: rattling / crackling noise, vibration increase, head/flow drop. Throttle delivery valve open or raise suction level.
- Overspeed: Do not exceed rated speed (1500 RPM). Over-speed increases radial load on shaft and bearings as N², and can cause impeller-casing rubbing.
- Guards mandatory: Coupling and belt drive guards (to BS EN 953) must be in place before start. Exposed rotating shafts are a Category 3 entanglement hazard.
- Pressure limits: Do not exceed 0.6 MPa (6 bar) casing pressure — this is the mechanical seal limit. Install a pressure gauge on discharge to monitor.
- Maintenance isolation: Lock-out / tag-out engine (remove ignition key, drain fuel line) before any maintenance on rotating parts. Allow exhaust and engine casing to cool below 50°C before handling.
NPSH margin: Always verify that system NPSHa = (Patm/ρg) + Hs − Hf,suction − Pv/ρg exceeds pump NPSHr by a minimum 0.5 m at all operating conditions — account for altitude, suction pipe friction losses, and water temperature. Failure to maintain this margin causes cavitation-induced impeller erosion and seal damage.
Centrifugal Pump Affinity Laws
The similarity laws governing centrifugal pump performance for rotational speed (N) and impeller diameter (D) change. Applied for VSD sizing, speed-trim calculations, impeller cutdown matching, and duty point optimisation.
Flow varies linearly with speed. A 10% speed increase gives 10% more flow. Also applies proportionally to impeller diameter: Q ∝ D.
Head varies as the square of speed. A 10% speed increase raises head by 21%. Explains disproportionate head gain with small over-speeding. H ∝ D².
Power varies as the cube of speed. Reducing speed by 20% cuts demand to 51% — the thermodynamic basis for VSD energy savings in variable-flow irrigation systems. P ∝ D³.
N · Q^0.5 / H^0.75
Ph = ρ·g·Q·H (W)
Ps = Ph / (η_p · 745.7)
65 – 90 (radial flow)
Impeller trim note: The affinity laws also apply to diameter reduction — H ∝ D², Q ∝ D, P ∝ D³. HYDROFORGE impellers are available in 2–3 mm trim steps for exact duty-point matching without system throttle losses. Trim exceeding 15% from full nominal diameter begins to degrade efficiency as hydraulic similarity breaks down; beyond 20% trim, BEP shifts and specific speed classification changes. Over-trimmed impellers also increase internal recirculation at part flow.
REQUEST PUMP PRICING.
Share your duty point, head, flow, and application — our engineering team will specify the right pump and deliver commercial terms within one business day.