orangehero
Well-Known Member
Hello,
I am planning to make a weldless bulkhead for my 40qt Stainless Pot. I want to make mine a little bit differently than the usual construction, so I'd like some feedback about whether it will work.
This is for a bulkhead to attach a valve and diptube to a kettle.
Parts:
A: SS Washer, 7/8" ID x 1-3/8" OD x 0.062" Thick ... McMaster Part # 98126A748
B: Silicone O-Ring #211, 13/16" ID x 1-1/16" OD x 1/8" Wide ... McMaster Part # 9396K32
C: SS Washer, 1-1/8" ID x 1-5/8" OD x 0.090" Thick ... McMaster Part # 98126A803
D: (Same as A) SS Washer, 7/8" ID x 1-3/8" OD x 0.062" Thick
Bushing: 316SS Bushing, 1/2" NPT Reduced to 3/8" NPT ... McMaster Part # 4452K166
I'm thinking it would be possible to drill out the bushing for it to accept a 5/8", or more likely, 3/4" OD Stainless Tube to use as a diptube in the kettle. I figure it should friction fit inside and be tight enough to maintain a siphon without having to use a compression fitting. From what I can tell the inside of the 1/2" to 3/8" Bushing will have a minimum inner diameter after drilling the threads out of 0.675" (4548K381). This actually provides a larger flow diameter than if one were to use a close nipple for the bulkhead (4548K171).
Another concern of mine is whether the bushing will screw in far enough into the ball valve.
Here's my calculation:
0.53" Thread Engagement on Bushing - 0.062"x2 Washers - 0.090" Washer - 0.050" 18 Gauge Kettle Wall = 0.266" Thread available for ball valve
I'm using kal's design idea where the o-ring is compressed between two washers, with the bottom washer a larger diameter for the o-ring to sit and expand in.
Thanks in advance and I appreciate any comments and suggestions!
Cheers!
I am planning to make a weldless bulkhead for my 40qt Stainless Pot. I want to make mine a little bit differently than the usual construction, so I'd like some feedback about whether it will work.
This is for a bulkhead to attach a valve and diptube to a kettle.
Parts:
A: SS Washer, 7/8" ID x 1-3/8" OD x 0.062" Thick ... McMaster Part # 98126A748
B: Silicone O-Ring #211, 13/16" ID x 1-1/16" OD x 1/8" Wide ... McMaster Part # 9396K32
C: SS Washer, 1-1/8" ID x 1-5/8" OD x 0.090" Thick ... McMaster Part # 98126A803
D: (Same as A) SS Washer, 7/8" ID x 1-3/8" OD x 0.062" Thick
Bushing: 316SS Bushing, 1/2" NPT Reduced to 3/8" NPT ... McMaster Part # 4452K166
I'm thinking it would be possible to drill out the bushing for it to accept a 5/8", or more likely, 3/4" OD Stainless Tube to use as a diptube in the kettle. I figure it should friction fit inside and be tight enough to maintain a siphon without having to use a compression fitting. From what I can tell the inside of the 1/2" to 3/8" Bushing will have a minimum inner diameter after drilling the threads out of 0.675" (4548K381). This actually provides a larger flow diameter than if one were to use a close nipple for the bulkhead (4548K171).
Another concern of mine is whether the bushing will screw in far enough into the ball valve.
Here's my calculation:
0.53" Thread Engagement on Bushing - 0.062"x2 Washers - 0.090" Washer - 0.050" 18 Gauge Kettle Wall = 0.266" Thread available for ball valve
I'm using kal's design idea where the o-ring is compressed between two washers, with the bottom washer a larger diameter for the o-ring to sit and expand in.
Thanks in advance and I appreciate any comments and suggestions!
Cheers!