Water pumps too loud - building a soundproof box - ventilation needed?

Growroom Design
13

I use the Alpha 2-l. Not cheap but very good. On the page where you can see the performance graph

https://product-selection.grundfos.com/product-detail.product-detail.html?custid=GMA&productnumber=95047568&qcid=465712046

it has options to show flow for ‘any newtonian liquid’ ‘emulsion’ and also water and antifreeze so I guess it is rated for them.

I have replaced pumps with them before, the only question they ask is ‘is the pump within the warranty period’ and if it is, they accept it.

EDIT :

From the datasheet

  1. ConstructionGrundfos ALPHA2 L is designed for long and trouble-free operation due to the canned-rotor type, i.e. pump and motor form an integral unit without shaft seal and with only two gaskets for sealing. The bearings are lubricated by the pumped liquid. These constructions ensure maintenance-free operation.The pumps are characterised by the following:• Permanent-magnet/compact-stator motor which contribute to high efficiency and high starting torque.• Ceramic shaft and radial bearings which contribute to long life.• Carbon thrust bearing which contributes to long life.• Stainless-steel rotor can, bearing plate and rotor cladding which contribute to corrosion-free long life.• Composite impeller which contributes to corrosion-free long life.• Automatic air venting which contributes to easy commissioning.• Compact design featuring pump head with integrated control box and control panel which fit into most common installation.

EDIT 2 :

Pumped liquids

The pump is suitable for clean, thin, non-aggressive and non-explosive liquids, not containing solid particles, fibres or mineral oil. The pump must not be used for the transfer of flammable liquids, such as diesel oil, petrol and similar liquids.

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