Other companies make high ratio PO checks. Why doesn't Sun?
Frequently Asked Questions
Other companies make high ratio PO checks. Why doesn't Sun?
Our configuration does not lend itself to high ratios. We can't make the pilot piston bigger so the only way would be to make the seat smaller. A smaller seat closes the flow path around the poppet stem and capacity is quickly lost. Besides, we have a solution……use a counterbalance valve.