Riser clamp torque
#1
08-22-20, 05:41 AM
Riser clamp torque
I have a few holes developing in a my 70 year old cast stack.
I will cut out a section and replace it with PVC but will need to install a riser clamp above the cut.
How tight should the bolts on the riser clamp be to secure the pipe but not risk cracking the old cast?
thank you,
I will cut out a section and replace it with PVC but will need to install a riser clamp above the cut.
How tight should the bolts on the riser clamp be to secure the pipe but not risk cracking the old cast?
thank you,
#2
08-22-20, 11:47 PM
I don't know if there's a setting for a torque wrench. I make them tight. If the riser clamp damages the cast, it's ready for replacement anyway. I don't mean to sound flippant but that's the best I can do.
#3
08-23-20, 06:14 AM
Member
This is a Fernco style fitting?
Make sure the joint is clean, lightly torque you can always add more torque if needed!
Make sure the joint is clean, lightly torque you can always add more torque if needed!
#4
08-23-20, 05:20 PM
Thanks Steve,
Marq1,
No, a Fernco is 60 ft/pd, I can not find one manufacture that states a recommended torque for the bolts, so I guess Steve is right, just tighten until it "feels right"........and the pipe doesn't slip!
Marq1,
No, a Fernco is 60 ft/pd, I can not find one manufacture that states a recommended torque for the bolts, so I guess Steve is right, just tighten until it "feels right"........and the pipe doesn't slip!
#5
08-24-20, 10:14 AM
I did find a torque spec for one brand of riser clamps. For 4", it has a torque spec of 46lbs.
https://s3.amazonaws.com/anvilintl.c...HG-SUB-261.pdf
If possible, see if you can a riser clamp on a fitting above too just below a hub. It's obviously not always possible, but ensures that nothing will slip!
https://s3.amazonaws.com/anvilintl.c...HG-SUB-261.pdf
If possible, see if you can a riser clamp on a fitting above too just below a hub. It's obviously not always possible, but ensures that nothing will slip!
this is the setup I have in mind but with a cabinet that runs all the way to the glass
