External filter Grainfather WITHOUT BULKHEAD


External filter for Grainfather 


Micron filter cylinder

 Customer ratings and reviews
 (4,9/5)  - 16 rating(s) - 16 review(s)
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For its assembly, the original bulkhead with m14x1 thread is used

Before purchasing, you must check whether the original Grainfather bulkhead is the correct size

If your Grainfather has an incompatible bulkhead, it must be purchased separately

Click here to see the M14x1 bulkhead product

New filter that replaces the original internal filter of the Grainfather. The problem with the original filter is that if it becomes clogged, the flow decreases considerably, sometimes even reaching total blockage, significantly lowering efficiency, it is also a filter that paradoxically does not filter. In fact, it often happens that coarse parts are not blocked and once they enter the pump impeller they even risk blocking it. If this happens it is a big problem as there is no possibility to disassemble it being directly connected to the vat and the vat is full of must.

With this new filter all this does not happen. The filter has been specifically designed in BacBrewing in such a way as to make it even removable and cleanable with a full pot.

The article is composed of all the parts necessary to obtain the complete external filtering system

Filter cylinder with 400 or 800 microns of your choice weave obtained from electro-pointed micro-perforated sheet, not mesh.

External cylinder in pyrex borosilicate glass thickness 5 mm

Totally disassemblable, totally built in pickled stainless steel, electropolished and passivated with acids that comply with the most severe USA ASTM 380-967 directive and with materials and procedures that comply with EU MOCA regulations, all welding is performed in Argon TIG.

All silicone parts are made internally in BacBrewing and are FDA certified food grade with resistance from -50 to + 180 ° C

In "Attachments" you can find the instructions to download in pdf format

Changes / improvements made

1- Increased diameter of the cap fins brought from 16 to 16.5mm in diameter for a greater guarantee of sealing.

To insert it it is recommended to wet it. Operate it linearly, DO NOT rotate on itself for risk of breakage

2- The hose clamp for the pump hose in the photos is no longer produced in the UK but in Taiwan and has a very bad quality. For this reason the double wire clamp is supplied 

3- Replacement of the silicone gasket of the central screw with an analogue in Teflon to be able to apply greater closing force to the gaskets of the Pyrex cylinder

4- Replacement of the vent screw with knurled screw for greater ease of operation when venting without the use of a screwdriver


5- Replacement of the silicone seal of the bulkhead from silicone to teflon for a greater fixing force of the filter to the Grinfather 

6- Pyrex cylinders with re-burned edge for greater mechanical resistance

Product Details
External filter for Grainfather

Instructions external filter for Grainfather

Download (2.12M)
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All the reviews on this page are ordered by date.
By on  22 June 2022 (External filter Grainfather WITHOUT BULKHEAD) :

Funzionamento perfetto

Funzionamento perfetto. Montaggio semplicissimo e rapido.

By on  06 Feb. 2021 (External filter Grainfather WITHOUT BULKHEAD) :

Grainfather exterior filter

Excellent product easy to install looking forward to using it

By on  20 Jan. 2021 (External filter Grainfather WITHOUT BULKHEAD) :

filtro Grainfather

ottimo prodotto che va a completare il Grainfather

By on  13 Jan. 2021 (External filter Grainfather WITHOUT BULKHEAD) :

A major improvement on the original Grainfather filter

Very easy to install. You will need pliers as well as the hose clamp to the motor has changed from the one shown in the manual, but no issue.
Ran through my first brew and it made a HUGE difference in clarity.
My recommendation is to buy this with the bulkhead and change to whole Grainfather fitting.
My other recommendation is to clean the filter between mashing and fermenter transfer so that you start clean for each process. Again this is very easy to do.

By on  31 Dec. 2020 (External filter Grainfather WITHOUT BULKHEAD) :

filtro esterno grainfather

semplicemente fantastico ottima fattura e una progettazione meticolosa lo consiglio veramente cambia completamente l’esperienza di birrificare con il grain father !!! ottimo prdotto vale tutti i soldi ke costa.

Grazie per la recensione. La guarnizione va inserita tra la parete esterna del GF e il filtro esterno. Non è che magari l'ha utilizzata tra il passaparete e la parete interna del GF? In questo caso si, avrebbe deformazioni dovute al montaggio errato

Shop owner reply on 31 Dec. 2020
By on  19 Dec. 2020 (External filter Grainfather WITHOUT BULKHEAD) :


Very easy and fast instalation. It works like a charm! I can recommend this product!

By on  20 Nov. 2020 (External filter Grainfather WITHOUT BULKHEAD) :

Huge differens

With my new external filter I’ve just have had my best brewday ever.

By on  13 Nov. 2020 (External filter Grainfather WITHOUT BULKHEAD) :

Ottimo prodotto

Ottimo prodotto. Tempi di preparazione un po' lunghi.

Risposta di Teboni Francesco: Ammetto che col suo ordine sono stato lungo, purtroppo ho avuto qualche problema. Gestendo tutto da solo succede alle volte che abbia dei ritardi.

By on  01 Nov. 2020 (External filter Grainfather WITHOUT BULKHEAD) :


I Grainfather lo dovrebbero fare direttamente così ....
Una modifica ben studiata e realizzata in maniera impeccabile .
Costa quel che costa ma vale quel che costa .... migliora di molto sia l’esperienza d’uso del grainfather che la pulizia del mosto .
Io personalmente mi trovo bene con la retina 800 micron, Con quella da 400 avevo qualche problema di intasamento e sul prodotto finale non ho visto particolari vantaggi rispetto a quella da 800.

By on  06 Oct. 2020 (External filter Grainfather WITHOUT BULKHEAD) :

Great external filter for the G30.

A well designed and engineered filter. easy 15min job to fit, well thought out.
did my first brew with it with no problems. impressed with the flow rate from the pump both recirculating and pumping out / transferring to the fermenter. the pump works at full rate right to the end. It adds 10min to the brew day to strip it down and clean out, but well worth the time. Recommend.

By on  30 Sept. 2020 (External filter Grainfather WITHOUT BULKHEAD) :

Nice looking filter

High hopes for this one. Very good materials and solid making.
Looking forward to use it. Much better idea than the original hop-filter of GF, that is

By on  23 Sept. 2020 (External filter Grainfather WITHOUT BULKHEAD) :

Da recensione postata sul video del canale Youtube BacBrewing

L'ho acquistato e soprattutto usato per 1 cotta, è un ' ottimo prodotto funziona perfettamente e il mosto è risultato limpido come non mai. Consigliatissimo!

By on  23 June 2020 (External filter Grainfather WITHOUT BULKHEAD) :

Ottimo acquisto

filtro ben fatto di ottima qualità, facile da montare, spiegazioni allegate ben fatte e semplici da seguire, consigliato fare dei test con sola acqua per prendere confidenza con alcune procedure, consigliatissimo

By on  19 June 2020 (External filter Grainfather WITHOUT BULKHEAD) :

Should have been an original part of the grainfather.

Very easy to install.
Easy to service.
Very well made.
High quality product, it helps to keep the pump clean.
The 400 microns filter is very fine.
Thanks for this piece of art.

By on  11 May 2020 (External filter Grainfather WITHOUT BULKHEAD) :

Una bomba!

Qualità professionale per tutti i materiali, filtra benissimo e poterlo pulire in 5 minuti e ogni volta che serve, a tino pieno, e' un enorme vantaggio rispetto al vecchio filtro. Un upgrade decisamente di pregio, consigliatissimo!

By on  17 Apr. 2020 (External filter Grainfather WITHOUT BULKHEAD) :

Ottimo accessorio

La qualità costruttiva e la progettazione accurate rendono questo pezzo di equipaggiamento un piccolo gioiello.

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