EMP 405 ST
Product code (SKU): E411012EMP 405 ST is an ENDRESS petrol-driven motor pump powered by a Yamaha MZ 300 engine. Its maximum flow is 1250 l/min (75 m³/h). In addition, the suction and discharge connections are 4 inches.

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EMP 405 ST – features
- Manufacturer ENDRESS
- Engine Yamaha MZ 300, 1-cylinder 4-stroke OHV
- Fuel petrol, displacement 296 cm³
- Maximum flow 1250 l/min (75 m³/h)
- Suction/discharge connections 4″ / 4″
- Consumption at 75 % load 3.03 l/h
- Shaft seal Silicon carbide
- Sound power level LWA 106 dB(A)
- Weight approx. 55 kg
EMP 405 ST – engine and use
A Yamaha MZ 300 engine drives the pump. It is a 1-cylinder four-stroke OHV engine with a displacement of 296 cm³, and it runs on petrol.
The pump does not need electricity. Therefore, you can use it on sites without mains power. Fuel consumption is 3.03 l/h at 75 % load.
Flow and connections
The maximum flow is 1250 litres per minute, or 75 m³/h. The suction and discharge connections are 4 inches in size.
The shaft seal is silicon carbide. In addition, the pump measures 600 x 490 x 555 mm and weighs approx. 55 kg.
EMP 405 ST or EMP 305 ST
The smaller EMP 305 ST delivers up to 933 l/min (56 m³/h), and it has 3-inch connections. In addition, it weighs only approx. 36 kg.
Choose the EMP 405 ST when you need a higher flow and 4-inch connections. You can find electric pumps in our submersible pump range.
Safety
Combustion engine exhaust contains carbon monoxide. Therefore, use the pump only outdoors or in a well-ventilated place.
Refuel the engine only when it is off and has cooled down. In addition, do not store fuel right next to the pump.
The sound power level of the EMP 405 ST is 106 dB(A), and the sound pressure level at 7 metres is 81 dB(A). Wear hearing protection when you work near the pump.
EMP 405 ST – technical data
| Manufacturer | ENDRESS |
| Engine | Yamaha MZ 300 |
| Type | 1-cylinder 4-stroke OHV |
| Fuel | Petrol |
| Displacement | 296 cm³ |
| Maximum flow | 1250 l/min (75 m³/h) |
| Suction/discharge connection | 4″ / 4″ |
| Consumption at 75 % load | 3.03 l/h |
| Shaft seal | Silicon carbide |
| Dimensions (L x W x H) | 600 x 490 x 555 mm |
| Weight | approx. 55 kg |
| Sound power level LWA | 106 dB(A) |
| Sound pressure level LPA 7 m | 81 dB(A) |
| Product number | E411012 |
Frequently asked questions
What fuel does the EMP 405 ST use?
The pump runs on petrol, and a Yamaha MZ 300 engine drives it.
What is the maximum flow of the pump?
The maximum flow is 1250 l/min, or 75 m³/h.
How large are the pump connections?
The suction and discharge connections are 4 inches.
What is the product number?
The product number (MPN) is E411012. Use it in quotation requests.
Request a quote
Add the product to the quotation basket and tell us the liquid you pump, the transfer distance and the lifting height. We confirm whether the pump suits your site.
Technical information
| Seal | Silikon-Karbid |
|---|---|
| Fuel cons. at 75% PRP [L/h] | 3.03 |
| Connection S/D | 4‘‘ / 4‘‘ |
| Alternator type | 1-cylinder 4-stroke OHV |
| Measurements L x W x H [mm] | 600 x 490 x 555 |
| Displacement [cm3] | 296 |
| Engine type | Yamaha MZ 300 |
| Fuel | Petrol |
| Max. production | 1.250 l/min (75 m³/h) |
| Max. total delivery height | 7 |
| Output at 3600 rpm | 7 |
| Solids | 30 |
| Weight ~ [kg] | 55 |
| Running time @ 75% PRP | 1.08 |
| Äänitehotaso LWA dB(A) | 106 |
| Sound pressure level LPA 7m db(A) | 81 |