With the costs of fuel (any fuel) still heading skyward, the idea of "free" energy from the ground is a reality more and more households are cutting their teeth on. Geothermal systems cost upwards of

The symbol for the needle valve is represented by a gate valve crossed in the middle by an arrow head pointed down (see attachment).

Some actuators must move at a precise speed, stop at a close-tolerance position, or produce a very accurate force to perform the work for which they were designed.

The primary part in a ball valve is a small ball or a disc inside it. It

Since a metal to metal contact is used to shut-off the flow of liquid, it

I have a question which is a little hard for me to figure out. I've attached a sketch showing the case. I have a parking garage which is fully sprinkled.

Is there a chart somewhere that shows me the volume of water required (after a pipeline is full) to raise the pressure to 200#s??

I have a water pipeline (several miles with hilly terrain), which takes treated water from a sump pump and dumps it into a separator for venting off the air, the water from there goes through a diffus