- Schedule 40 is standard.
P. L. = P.L units are in PSI/ft
Fluid Velocity = Q/A
- Normally made from annealed steel w/ low carbon content. Materials with good
bending and flaring properties.
- Nominal size is measured by
Load Sensing PRV
-Load sensing PRVs senses the magnitude of the pressure through the circuit and
determines which valves should open. If only much lower pressure is required, a load
sensing PRV minimizes the power loss due to heat by friction in valves.
-a valve that produces an output (pressure,flow,direction) that is proportional to an
electronic control input.
-proportional valves stop at intermediates positions, controlled by associated electronics
and a max frequency response of
- During normal operation, oil losses occur due to slippage.
-Slippage may cause cavitation so a charge pump is required.
- Charge pump accounts for slippage by keeping the loop full of oil by supplying a
sufficient flow to make up for slippag
-function: transmit energy received from a prime mover (eg. Internal combustion engine)
to a load having its own operating characteristics. Regulate torque and speed.
-A typical hydrostatic transmission closed loop drive consists