Stuffing Box
- Thick-walled, solid injection-moulded polypropylene construction.
- Back pull-out design provides safe, simple and quick assembly and disassembly.
STP Series
Corrosion-Resistant Moulded Pump
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STP / STPP Series
STP Series pumps are injection-moulded, non-metallic, back pull-out, volute-casing and end-suction centrifugal pumps. They use polypropylene for a simple, rugged and reliable design. Polypropylene is a low-density, fairly rigid vinyl polymer with temperature resistance up to 70°C.
200 m³/hrMaximum capacity
50 mMaximum head
70°CMaximum temperature
01
Performance
Technical Data
| Operating Frequency | 50 Hz |
|---|---|
| Capacity (Q) | Maximum 200 m³/hr |
| Head (H) | Maximum 50 m |
| Motor Power (P) | Maximum 40 kW |
| Maximum Specific Gravity (SG) | 1.5 |
| Maximum Working Temperature | PP: 70°C |
| Suction & Delivery Connection | ANSI B16.5 – Class 150 |
| Shaft Seal | Single mechanical seal and gland packing |
| Bearings | Rolling element bearings |
| Lubrication | Oil |
| Motor Compatibility | IS 1231, IEC 72-1, NEMA |
02
Industries
Applications
- Steel plants, pickling plants and scrubbing
- High-temperature, hazardous and toxic chemicals
- Pharmaceutical industries
03
Engineering
Construction Features
Shaft & Bearing
- Heavy-duty shaft design for minimum deflection.
- Maximum 0.05 mm deflection at the stuffing box at maximum load.
- Large-capacity oil sump improves bearing cooling and service life.
- Telescopic arrangement enables semi-open impeller clearance adjustment.
- Double O-ring prevents lubricating-oil leakage.
Volute Casing
- Top-centreline discharge, self-venting volute casing in injection-moulded polypropylene.
- Thick-wall polymer construction.
- Optimized hydraulic flow design.
Impeller
- Precision-moulded, lightweight, semi-open construction with large contoured flow passages.
- Hydrodynamically optimized semi-open radial design.
- Axial forces are balanced with balancing holes and back vanes.
04
Configuration
Mechanical Seal Options
Single PTFE Bellow Seal
Gland Packing
- Available with single mechanical seal and gland-packing options.
- PTFE bellows provide broad chemical resistance.
- Gland-packing pumps use pure PTFE packing.
05
Selection Guide
Pump Dimensions
STP Models
| Model | DNs | DNd | A | F | H1 | H2 | I |
|---|---|---|---|---|---|---|---|
| STP-100 | 25 | 25 | 79 | 301 | 100 | 140 | 41 |
| STP-120 | 35 | 32 | 86 | 359 | 115 | 154 | 57 |
| STP-130 | 35 | 32 | 98 | 363 | 130 | 180 | 59 |
| STP-160 | 75 | 40 | 80 | 457 | 137 | 179 | 65 |
| STP-160R | 40 | 40 | 108 | 457 | 137 | 179 | 65 |
| STP-170 | 75 | 50 | 98 | 456 | 160 | 195 | 66 |
| STP-40 | 50 | 40 | 110 | 452 | 183 | 215 | 65 |
| STP-50 | 75 | 40 | 103 | 456 | 183 | 220 | 67 |
| STP-50R | 40 | 40 | 132 | 456 | 183 | 220 | 67 |
| STP-55 | 75 | 50 | 106 | 460 | 183 | 222 | 67 |
STPP Models
| Model | DNs | DNd | A | F | H1 | H2 | I |
|---|---|---|---|---|---|---|---|
| STPP-75 | 75 | 50 | 94 | 636 | 185 | 205 | 94 |
| STPP-100 | 100 | 75 | 110 | 638 | 235 | 334 | 94 |
| STPP-100R | 75 | 50 | 110 | 638 | 235 | 334 | 94 |
All dimensions are in millimetres.
