Instruction: Given a question and the related document, predict if the question is answerable based on the information provided in the document. Output only yes or no.

Input:
Question: i want to put a Tee on my RV propane tank. Does this cut the flow of propane without an additional valve?
Document: this item is of high quality and worked to the proper standard.work's to stop the propane flow when unhooked from the babeque.
does what its suposed to. tank fits well and dosent leak. not sure what more can be told about it.
Just as described hooked up to make propane hose longer hook up was easy took no time at all .
Just the part i needed to complete my generator hookup. Worked perfectly. This is installed in a 30psi system and no leaks from internal check valve.
Great quality in these fittings. I saved over $120 from what a local distributor of a similar product quoted me.FYI: the valves in these fittings shut off the gas flow automatically unless a device is connected to them. Perfect.
Good quality fitting. Hand no problems with fitting it.
Answer: yes