|Adding A Whirlpool Port To Your Kettle? No Problem
Adjustable wrench and/or channel lock pliers
Center punch, or nail to mark the hole center
1/8" pilot hole drill bit
Milwaukee 3/16" to 7/8" Step Drill Bit #4
Stainless Steel Weldless Bulkhead 1/2" NPT
Anvil 1/2" NPT Swivel Dip Tube
Danco #12 Rubber O-Rings
Boiling wort is extremely hot and it has the potential to scald your skin in a matter of seconds. Coming into direct contact with boiling wort is also one of the most common causes of injury when brewing beer, something to keep in mind when working around it.
Pumping boiling wort from the kettle, through a counter-flow chiller and then returning the wort to the kettle, is a very effective way to sanitizing the counter-flow chiller. Returning the hot wort exiting the chiller to the kettle, by using a clamp on the kettle rim to hold the end of a silicone hose in place, is not a safe. Temporary clamps can slip and move, causing a loose hose end to unexpectedly spray hot wort on brewers and equipment.
The safest way of returning hot wort to the kettle is through a permanently mounted whirlpool port. The use of a weldless whirlpool port ensures a solid physical connection between the kettle and the silicone tubing. Once a solid connection has been made between the two, the risks of hot wort unintentionally splashing outside of the kettle are greatly reduced.
|Weldless Bulkhead Fitting And 90 Degree Swivel Elbow
|Drilled Hole Shown With Metal Shavings And Food Grade Lubricant
Spraying the hole center with PAM, or another food grade lubricant, will prevent the tip of the drill bit from burning up. Drilling holes in stainless steel requires a combination of steady pressure on the drill, slow bit rotation and plenty of lubrication to keep the tip of the drill bit cool and sharp. Center the tip of the 1/8 inch pilot bit into the dimple then trigger the drill on and off, using a slow drill speed while pressing firmly down on the drill.
|Expanding The Pilot Hole Using A High Speed Step Drill Bit
Debur the inside surface of the hole by running the drill from inside the kettle, lubricating the bit and rotating the bit at a slow speed. Again if using a larger diameter step bit be careful not to press too hard and make the hole any larger than needed. A small, fine, half round stainless steel file can also be used to debur the inside of the hole. Paper towels can then be used to wipe up any lubricant and metal shavings before installing the whirlpool port.
|Bulkhead Fitting Installed With Orange Washer And Grooved Nut
|Coupling Shoulder Tightened Against Outside Kettle Wall
|Clearance Needed Between The Bulkhead Fitting And The Grain Basket
|Whirlpooling Hops To Increase Utilization And Isomerization
|Add A Whirlpool Port And Brew Better Beer!