Questions and Answers for
Zeagle Signal Tube (SMB):
hi, is this smb with over pressure relief valve?
(Certified Scuba Instructor at Scuba.com)
No. This SMB is designed to be orally inflated at the surface and has no op valve to it.
The Standard Signal Tube is a surface signaling device with its fluorescent orange and neon yellow coloring. The tube is inflated at the surface with an oral inflation valve and measures 6” x 60” for maximum visibility in choppy waters.