As a car owner, you may wonder what a PCV valve is, considering it is a part of your car engine you are not aware of. Your car’s engine is the lifeline of your car and has to be in its best shape ...

Valve appears to be stuck in the open position--same oil flow whether stem in or out. I can feel spring tension. If I turn the knob CLOCKwise, the stem will advance into the valve body, but I have to ...

Surfers and seagulls spend the afternoon at Refugio State Beach, the site of the 2015 Refugio Oil Spill. One of the Santa Ynez Unit oil platforms is seen in the background. Credit: Giana Magnoli / ...

Traditional sucker rod pumps (SRP) use a single traveling valve, but recent double traveling valve innovations have improved SRP performance and efficiency in field applications with double traveling ...