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

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

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

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

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

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

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

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

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

Calculating the Pump Head - Amick Racing

expansion tank absorbs any thermal expansion of the fluid. Open systems don’t require expansion tanks, as the fluid is naturally free to undergo thermal expansion. Figure 1: Closed and Open Hydronic Systems What is Pump Head? Units of Measure: In the U.S. system, head is measured either in PSI or in "feet of head" (usually abbreviated to "feet").

  Pumps, Expansion, Tanks, Expansion tanks

WATER HEATER THERMAL EXPANSION TANKS

Thermal expansion tanks eliminate this wasteful, costly and dangerous practice. The thermal expansion tank is certified to NSF/ANSI-61 DHOT (140° F) and pressures to 150 PSI. ... upward, use only a manual type tire pump to increase the pressure. If the air charge needs to be reduced, depress the valve core to release pressure.

  Pumps, Water, Expansion, Tanks, Heaters, Water heaters, Expansion tanks

Accumulator and Expansion Tank Instructions - JabscoShop

pressure-controlled pump. (Some modern computer-controlled pumps may not require an accumulator tank, but see Section B - Expansion tanks.) Fitted close to the discharge port of the pressurised water pump, the accumulator tank acts as a pressure buffer, ensuring a smooth flow of water from the outlets.

  Pumps, Expansion, Tanks, Expansion tanks

Hot Water Storage Tanks & Heat Exchangers

Hot Water Storage Tanks & Heat Exchangers Storatherm, Longtherm Hot Water Storage Tanks & Heat Exchangers ... Storatherm Aqua Heat Pump AH/1 - AH/2 Storatherm Aqua Combi AC Storatherm Aqua Load AL/R ... Expansion Deaeration Vessels Systems & Separation Technology Water Make-Up Systems & Water Treatment Services

  Pumps, Expansion, Tanks

INTRODUCTION TO CRYOGENIC STORAGE TANKS

STORAGE TANKS www.hedcoint.com 1 1. Applicable code Storage Tank Design ATM AWWA API 65 0 P<2.5 Psi BS 2654 EN 14015 LPS ... In tank pump 16 www.hedcoint.com. Thermal design & insulation DIRECT GROUND REFLECTION DIFFUSE WIND 17 www.hedcoint.com. Expansion bellows 18 www.hedcoint.com. Insulation MATERIALS Insulation Base Perlite …

  Pumps, Expansion, Tanks

In-Line Air Separators - TACO - HVAC

expansion tanks (Figure A) care must be taken to insure that piping between the air separator and the plain steel expansion tank is pitched at least 3 degrees to facilitate the migration of captured air back into the expansion vessel. Systems …

  Expansion, Tanks, Coat, Hvac, Separator, Air separator, Expansion tanks, Taco hvac

Double-wall Oil Tanks

tanks are easier and faster to fill thanks to their unique expansion system, all but eliminating the possibility of spills by home heating oil professionals. And, our compact tanks are available in several different sizes, providing more flexibility for placement in any home. Built with safety and the environment in mind

  Expansion, Tanks

Expansion Tank (CHW)-FINAL - Engineering Pro Guides

An expansion tank is used in a chilled water system to accomplish three main tasks, (1) accommodate thermal expansion of the chilled water, (2) maintain positive pressure at all points in the system at all times and (3) maintain net positive suction head at the chilled water pump(s).

  Pumps, Expansion