Datasheet summary
Speck P21 5 450 7 400 L
PDF datasheet mirror for Speck P21 5 450 7 400 L (Speck Pumps). Verify with OEM before design.
Summary
Product identification
SPECK HIGH-PRESSURE PLUNGER PUMPS SERIES P21.
Operating limits
- Max. Water Temperature: 70 °C
- Operation Type: These pumps are not suitable for continuous operation. The maximum stated pressure applies only for very short, intermittent use, such as testing vessels and pipes.
- Safety: A safety valve must be installed in accordance with guidelines for liquid spraying units. It should be set so the admissible operating pressure cannot be exceeded by more than 10%. Operating without a safety valve, or exceeding temperature or speed limits, automatically voids the warranty.
- Cavitation: Cavitation must be avoided.
- A pressure accumulator may be necessary depending on the unit's construction and operating conditions.
Feed water
SPECK TRIPLEX Plunger Pumps are suitable for pumping clean water and other non-aggressive or abrasive media with a specific weight similar to water. Prior to pumping any other media, suitability and resistance of the pumps (standard or special design), considering performance and temperature values, must be checked.
Electrical
A general formula for calculating power is: P (bar) x Q (l/min) = kW / 475
Mechanical / hydraulic
Pump Specifications
| Type | Code No. | Power Consump. (kW) | Pressure max. (bar) | RPM max. (min⁻¹) | Output max. (l/min) | Water-Temp. max. (°C) | Plunger dia. (mm) | Stroke (mm) | Weight approx. (kg) | NPSH Required (mWs) |
|---|---|---|---|---|---|---|---|---|---|---|
| P21/5-450 | 00.2187 | 4,7 | 450* | 1420 | 5,1 | 70 | 12 | 14,1 | 8,0 | 8,5 |
| P21/7-400 | 00.2203 | 5,6 | 400* | 1420 | 6,8 | 70 | 12 | 18,0 | 8,0 | 9,5 |
Note: The max. stated pressure applies only where the pump is used for a very short time, such as for testing vessels and pipes. The pumps are not suitable for continuous operation.
Construction Characteristics
- Crankcase of aluminium-cast.
- Crankshaft with taper roller bearings and plain bearing con rod, all running in oil.
- Plunger: hard metal-coated stainless steel.
- Identical suction and discharge valves, easily accessible via plugs.
Materials Used
- Valve Casing: AISI 316L (1.4404)
- Plunger: Hard metal-coated stainless steel
- Valves: High-Grade Stainless Steel
- Sleeves: Nitrile with fabric reinforcing
- Crankshaft: Drop-forged and case-hardened
Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions from the official OEM PDF datasheet. Contractual data must always match the specific OEM PDF revision used for the project.
Official datasheet (PDF)
Curated from selected public technical reference material for discovery and preliminary comparison. This summary is not a substitute for a current certified manufacturer datasheet. Verify revisions and design limits before use.