ALPHA - Grundfos

Dec 11, 2020 · liquids, and must not be used to circulate aggressive liquids such as acid or seawater. In domestic hot water systems, the temperature of the pumped liquid must always be above 122 °F (50 °C) due to the risk of legionella. The temperature of the hot water source must not be high enough to cause burns or scalding.

  High, Liquid, Temperatures

CM - Grundfos

If the pump is installed above the liquid level, a non-return valve must be fitted in the inlet pipe below the liquid level. See fig. 4. Self-priming pumps We recommend an opening pressure of the non-return valve which is lower than 0.05 bar. Otherwise, the additional resistance will reduce the suction capability of the pump.

  Liquid, Pumps

Circulator pumps - Grundfos

Energy savings High-efficient permanent-magnet motors. Flexibility Suitable for installation in existing systems. Comfort Low-noise operation. Safety Built-in electrical and thermal protection of the pump. User friendliness Simple setting and operation. Type key * Exception: UK version, size 15 = 1 1/2". Performance range Fig. 1 Performance range

  Thermal, Energy, Comfort, And thermal

MGE motors - Grundfos

The motors incorporate a PI controller. You can connect the motors to a signal from an external sensor and a setpoint signal enabling control in closed loop. You can also use the motors for an open-loop system in which the setpoint signal is used as a speed control signal. The motors incorporate an operating panel which is available in various ...

  Motor, Mge motors

GRUNDFOS A WIDE RANGE

3 A global business With more than 18,500 employees and an annual production of some 16 million pump units a year, Grundfos is one of the world's leadi ng pump manufacturers.

  Grundfos

GRUNDFOS SUBMERSIBLE MOTOR GUIDE

Three Phase Power Supply Unbalance For three phase systems a true full 3-Phase Delta {3 pot system} transformer setup is recommended or one true 3 phase transformer. This system, although much better than an open delta 2 pot system, still does not guarantee good balanced power. Load unbalance can still occur on this

  Phases, Power, Three, Three phase, Three phase power

GRUNDFOS, DES POMPES DE QUALITE SUR TOUTE LA …

8 Caractéristiques techniques Débit : max. 10 m3/h Hmt : max. 12 m Temp. du liquide : -25 °C à +110 °C Pression de service : max. 10 bar Applications

Mechanical shaft seals for pumps

The shaft seal forms a barrier between what is inside the pump and the atmosphere. A pump with a through-shaft is not completely sealed. It is a challenge to the entire pump industry to minimise leakage. There are countless variants of shaft seals, reflecting the diversity of …

  Seal, Shaft, Shaft seal

DOSING PUMPS, MEASUREMENT & CONTROL AND …

Mechanical diaphragm dosing pumps DMX: mechanical diaphragm dosing pumps “Pre-selected Range” up to 765 l/h DMX pre-selected range is the fast lane to reliable, tough ... available in simplex and duplex versions • Integrated pressure relief valve and active diaphragm protection system • Available with ATEX design – certified for EX ...

  Mechanical, Simplex

Spare parts CATALOGUE

125 1 1 BAQE = standard 0 Bare shaft pump 160 2 3 DAQF 1 0.37 200 3 5 BQQV 2 0.55 250 4 7 BAQV 3 0.75 315 5 8 AAQE 4 1.1 360 7 9 AAQV 5 1.5 400 8 A SNE Packing 6 2.2 500 9 B SNO Packing 7 3 630 C C SNF Packing 8 4 D SKO Packing 9 5.5 E GQQE A 7.5 F GQQV B 11 G BQQE C 15 H AQQE D 18.5 I AQQV E 22 J DQQE F 30 Pump size suction-disch. Code K …

  Standards