Category Archives: Carbonation

Building A Spunding Valve – Option 3 with Brass Fittings

cln_img_0287

A Spunding Valve allows you to maintain a set pressure.  If pressure in the pressure vessel exceeds the set point, it is expelled.

See: Build a Spunding Valve for more information and additional configuration options

Some homebrewing applications…

  1. Pressurized fermentation.  Ferment in a 5 or 10 gallon corny keg and use your Spunding Valve instead of an airlock.  This allows you to ferment at your desired pressure.
  2. Dry hop under pressure.  This allows you to dry hop earlier while reducing oxygenation.  Active yeast are more likely to metabolize oxygen that’s introduced during dry hopping during active fermentation.  Since CO2 is not exiting beer as vigorously under pressure, wanted compounds, flavors and aromas are more likely to stay in your beer under pressure.
  3. Naturally and accurately carbonate beer right in the keg.
  4. An airlock replacement.  Keep the valve wide open for non-pressurized fermentations.  Only do this if you have plenty of head space.  This wouldn’t make a great blow off tube.
  5. Keg to keg transfers.  Use the Spunding Valve to allow excess gas to exit the receiving keg as you transfer under pressure.  Helps you achieve a slow, controlled and pressurized transfer.
  6. Fix over-carbonated beers.  Use the same general process as for carbonation (skipping the addition of fermentable sugar).  Use a carbonation chart to determine proper pressure for the temperature the keg is at.  The Spunding Valve allows excess pressure to vent until the new carbonation level is achieved.  You can agitate the keg to fix carbonation more quickly.
  7. Test for keg leaks.  Pressurize your keg to serving pressure.  Put the Spunding Valve on (with the pressure set well above your serving PSI) and note the reading.  The gauge should remain steady.  If pressure drops, you know you have a keg leak.  It’s worth noting that this checks the entire keg including gas body o-ring.  That spot is hard to check and other way as it’s only in function when the gas QD is on.  When the gas QD is on… it’s difficult to spray and check for bubbles underneath the gas QD.  Thanks to Scott Janish for this tip!
  8. As an airlock for long term aging of beers.  Airlocks can run dry over time.  A Spunding Valve will not.  Thanks to Twitter Follower [Connect with HBF on Twitter] @BionicBrewing for this tip!

Option #3 – Build a Spunding Valve for more information and additional configuration options

Option #3 with Brass Fittings

Two primary components of my Spunding Valve Build already contain brass.  The two stainless fittings can be expensive and difficult to find in stock.  This parts list swaps those two fittings for brass versions

SeeBuild a Spunding Valve for more information and additional configuration options

Recent Amazon Finds [view more]:

pst:brassspundingbuild3

Stainless Carbonation Cap [+2 orings] – PET Bottles + Draft Line Cleaning Builds

Hombrew soft drink PET Bottle Filling Stainless Steel Carbonation / Line Cleaning Cap w/ 5/16" Barb/ Drop with two free O-ring

Stainless steel ball lock carbonation cap with barb.  Includes two replacement o-rings.

PET Bottles as Growlers: These are generally intended to convert 1L and 2L bottles to growlers.  Fill up a 1L or 2L PET bottle with your favorite homebrew.  Put one of these on (purge the headspace by squeezing if you want to) and then pressurize for transport.  This should help to reduce oxygen pickup and maintain carbonation levels.

Fine tune or rapidly carbonate beer: You can also use this cap to rapidly carbonate beer.  Same process as for transport, just set your regulator to the proper pressure and shake or agitate the PET bottle to help introduce CO2.  Or hook it up to CO2 and let it sit in you kegerator.

Note, from the product description: “The post on this unique carbonation cap has been machined ,so it fit BOTH the liquid and gas ball lock disconnects.” – that’s a great thing in my opinion as it makes the projects below possible – please check the current product description for currentness

Draft Line Cleaning Projects:  Examples, using similar SS Caps- Build A Recirculating Draft Line Cleaning Pump | Mark II Keg and Carboy Cleaner Draft Line Cleaning Pump Conversion

Update: Since this post was published the price, availability or promotion has changed.  Check the product page for up to the minute description, price and availability.  Also: Today’s Deals on Amazon

Hombrew soft drink PET Bottle Filling Stainless Steel Carbonation / Line Cleaning Cap w/ 5/16″ Barb/ Drop with two free O-ring


2 Micron Stainless Steel Diffusion Stone – $8.99

Diffusion Stone ,MRbrew 2 Micron Oxygen Diffusion Stone with 1/4"Barb for Kegging Homebrew

  • Stainless steel 2 micron diffusion stone with 1/4in barb
  • 316 stainless steel ,better resistance to high temperature and corrosion resistance.
  • Oxygenate wort thoroughly to insure a healthy fermentation,carbonate draft beer quickly
  • Used with compressed CO2, O2 or adequately powered air pumps.
  • Primary Uses:Adding oxygen to the wort before fermentation begins or to force carbonate beverages with carbon dioxide.

10/7/17 10 AM Central: This is selling for $8.99.  Shipping to most US addresses is also free with Prime Membership [Try Prime for Free] or a qualifying order. Price, shipping and availability can change quickly.  Check the product page for up to the minute price and availability.  See Recent Amazon Finds and our Amazon Fillers Resource Page to help you put together an order that qualifies for free shipping.

Diffusion Stone ,MRbrew 2 Micron Oxygen Diffusion Stone with 1/4″Barb for Kegging Homebrew

AlsoYeast Starters & Fermentation | StirStarter Stir Plate | Regulator | William’s Brewing Oxygen Regulator


Keg Carbonation Lid and Stone – $28.55 + Free Shipping

UP100 Homebrew Cornelius Style Keg Carbonation Lid Kit With 0.5 Micron Diffusion Stone

Keg Carbonation Lid.  Keg Lid with Ball Lock Post and Silicone O-ring.  Includes .5 micron carbonation stone.  Use to assist in force carbonating your homebrew.

9/27/17 11 AM Central: This is down to $28.55.  That’s just 6 cents shy of the best historical third party Amazon price I found. Shipping to most US addresses also is free. Price, shipping and availability can change quickly. Check the product page for up to the minute price and availability.

UP100 Homebrew Cornelius Style Keg Carbonation Lid Kit With 0.5 Micron Diffusion Stone

Compare: at MoreBeer – similar function but not identical

Also: Kegerator Tips & Gear | Keg Repair Part #s | 5 Recent Keg Finds

Our Top Draft Resources

 

Recent Amazon Finds [view more]:

Inline Regulator for… $6.99! + Alternate Use Idea

william's brewing inline regulatorKeg King Inline Regulator via William’s Brewing.  About: “This in line regulator features 1/4″ hose barbs, and can be adjusted with a flat head screwdriver. It can reduce incoming pressure from 150 PSI to 1 PSI. It is very handy to use when you want to use a single output C02 regulator in a draft system, but supply different kegs with different dispensing pressures. 4.75″ long with included brass hose barbs installed.”

This is basically an inline secondary regulator.  You still need a primary regulator attached to your CO2 tank.  The idea is, you set the primary to the highest pressure you will use (without exceeding specifications of any component of your system) and then use these regulators inline (one per line) to fine tune pressure and carbonation [See: Balancing Your Draft System].  As an example, you could set your primary to 25 PSI for faster force carbonation and set each line to a different pressure based on desired carbonation level.

I think this is brilliant, especially at the current price of $6.99.  Check site for current price and availability.

Alternate Use Idea: I don’t see any reason why you couldn’t reverse the intended direction of this and use it as an extremely inexpensive Spunding Valve.  What’s a Spunding Valve you ask?  Great question.  See: Build a Spunding Valve!  – Update: HBF Reader Benson has made the point that this may not work in reverse.  There may be an integral check valve.  That’s absolutely valid.  I’ve ordered a couple of these and plan to give them a try both for the intended purpose and to see whether they work in reverse orientation.

IN LINE REGULATOR

The inline regulator is adjusted by a screwdriver and does not have pressure markings or a gauge.  You could use something like this inline gauge, manually check pressures with something like this keg pressure tester, rig up something with a t-fitting or (my least favorite) use trial and error.

Also: Kegerator Tips & Gear | Keg Repair Part #s | 5 Recent Keg Finds

Our Top Draft Resources

 

Visit William’s Brewing – Web Only Clearance Sale

Recent William’s Brewing Finds [view more]:

Ready Made Spunding Valve – $36.99 via Brew Hardware

spunding valve

Ready made Spunding Valve from Brew Hardware

A Spunding Valve has lots of applications…

Spunding Valve Uses
  1. Pressurized fermentation.  Ferment in a 5 or 10 gallon corny keg and use your Spunding Valve instead of an airlock.  This allows you to ferment at your desired pressure.
  2. Dry hop under pressure.  This allows you to dry hop earlier while reducing oxygenation.  Active yeast are more likely to metabolize oxygen that’s introduced during dry hopping during active fermentation.  Since CO2 is not exiting beer as vigorously under pressure, wanted compounds, flavors and aromas are more likely to stay in your beer under pressure.
  3. Naturally and accurately carbonate beer right in the keg.
  4. An airlock replacement.  Keep the valve wide open for non-pressurized fermentations.  Only do this if you have plenty of head space.  This wouldn’t make a great blow off tube.
  5. Keg to keg transfers.  Use the Spunding Valve to allow excess gas to exit the receiving keg as you transfer under pressure.  Helps you achieve a slow, controlled and pressurized transfer.
  6. Fix over-carbonated beers.  Use the same general process as for carbonation (skipping the addition of fermentable sugar).  Use a carbonation chart to determine proper pressure for the temperature the keg is at.  The Spunding Valve allows excess pressure to vent until the new carbonation level is achieved.  You can agitate the keg to fix carbonation more quickly.
  7. Test for keg leaks.  Pressurize your keg to serving pressure.  Put the Spunding Valve on (with the pressure set well above your serving PSI) and note the reading.  The gauge should remain steady.  If pressure drops, you know you have a keg leak.  It’s worth noting that this checks the entire keg including gas body o-ring.  That spot is hard to check and other way as it’s only in function when the gas QD is on.  When the gas QD is on… it’s difficult to spray and check for bubbles underneath the gas QD.  Thanks to Scott Janish for this tip!
  8. As an airlock for long term aging of beers.  Airlocks can run dry over time.  A Spunding Valve will not.

 

If you’ve been eyeing our Spunding Valve Build, but don’t want to put it together yourself, here’s your chance.  As of this posting, Brewer Hardware has this for $36.99.

Brew Hardware has had some trouble keeping this in stock.  As of this posting, it’s back in stock and available to purchase. Check the product page for up to the minute price and availability.

CORNY KEG SPUNDING VALVE ASSEMBLY

Also: 0-60 ADJUSTABLE PRESSURE RELIEF VALVE – ready made Spunding Valve via William’s Brewing

Top Post: Build a Spunding Valve – 3 Ways – How and Why

Recent Great Deals [view more]:

Ready Made Spunding Valve – $29.99

via William’s Brewing Adjustable Pressure Relief Valve Assembly with 0 to 60 PSI gauge.  The PRV valve has a range of 15 to 50 PSI.  Has a 1/4″ female flare fitting (connect to your pin or ball lock QD).

A Spunding Valve has lots of applications…

Spunding Valve Uses
  1. Pressurized fermentation.  Ferment in a 5 or 10 gallon corny keg and use your Spunding Valve instead of an airlock.  This allows you to ferment at your desired pressure.
  2. Dry hop under pressure.  This allows you to dry hop earlier while reducing oxygenation.  Active yeast are more likely to metabolize oxygen that’s introduced during dry hopping during active fermentation.  Since CO2 is not exiting beer as vigorously under pressure, wanted compounds, flavors and aromas are more likely to stay in your beer under pressure.
  3. Naturally and accurately carbonate beer right in the keg.
  4. An airlock replacement.  Keep the valve wide open for non-pressurized fermentations.  Only do this if you have plenty of head space.  This wouldn’t make a great blow off tube.
  5. Keg to keg transfers.  Use the Spunding Valve to allow excess gas to exit the receiving keg as you transfer under pressure.  Helps you achieve a slow, controlled and pressurized transfer.
  6. Fix over-carbonated beers.  Use the same general process as for carbonation (skipping the addition of fermentable sugar).  Use a carbonation chart to determine proper pressure for the temperature the keg is at.  The Spunding Valve allows excess pressure to vent until the new carbonation level is achieved.  You can agitate the keg to fix carbonation more quickly.
  7. Test for keg leaks.  Pressurize your keg to serving pressure.  Put the Spunding Valve on (with the pressure set well above your serving PSI) and note the reading.  The gauge should remain steady.  If pressure drops, you know you have a keg leak.  It’s worth noting that this checks the entire keg including gas body o-ring.  That spot is hard to check and other way as it’s only in function when the gas QD is on.  When the gas QD is on… it’s difficult to spray and check for bubbles underneath the gas QD.  Thanks to Scott Janish for this tip!
  8. As an airlock for long term aging of beers.  Airlocks can run dry over time.  A Spunding Valve will not.

 

If you’ve been eyeing our Spunding Valve Build, but don’t want to put it together yourself, here’s your chance.  As of this posting, William’s Brewing has this for $29.99.  Check the product page for up to the minute price and availability.

HBF Reader Christian Says… “I have four of these. Use them for fermenting under a controlled pressure. Also use them for counter pressure transfers. Highly recommend.”

0-60 ADJUSTABLE PRESSURE RELIEF VALVE

Top Post: Build a Spunding Valve – 3 Ways – How and Why

Visit William’s Brewing – Web Only Clearance Sale

Recent William’s Brewing Finds [view more]: