Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: what is the material
Document: very good price fixed a low pressure problem in the house. more than one thing can now be on at once.
The dual (male/female) threading makes installation in pre-existing plumbing configurations a piece of cake. Adjustment to control water pressure is simple and quick. Highly recommended.
Living in a house with plastic pipe and high local water pressure, after a pin hole leak in a bathroom pipe it seems like a good idea to reduce the pressure at the entrance meter. This Watts pressure reducer installed inline and did the job perfectly for this house. I checked the pressure after installation and it maintains the pressure as set. It has been in service now for about a year.
ITS THE SAME WATTS VALVE YOU CAN GET ANYWHERE.I BUY ALOT HERE BECAUSE NO TAX[YET] AND FREE SHIPPING..WATTS USED TO BE THE BEST,DONT KNOW NOW.ITS BRASS AND NO BLOWN WATER HEATER SO FAR....AGAIN,CHEAPEST I COULD FIND AND IT PASSED CODE.
I put one on my sprinklers to stop the banging - worked great, instead of 105psi, not at 65psi. My house ones is starting to go, bought another one. These are 1/2 price than the local stores, like a 2 for one. If you need one for your house (3/4") this one is for you.
I moved into my new house 4 years ago and due to the hard water the previous meter got alot of build up and wasn't working as it should. The easy fix was to replace with a like kind regulator and I bought the watts and installed myself with no problem and everything is working great.
I knew from past experience that this was a difficult item to find locally. It arrived very fast and at a very good price.
Exactly what I was looking for and with quick turnaround. Seems like a decent product. I would recommend it to other people.
Answer: no