| 摘要 |
A cartridge relief valve (50) is uses a piston design. The piston (38) replaces a tube used in prior art relief valves. The piston (38) makes the inventive relief valve (50) easier to manufacture and more stable than prior art relief valves. This is due to the fact that, for a given size valve, the diameter of the piston (38) is smaller than the diameter of the tube that it replaces. Furthermore, the diameter of the pilot seat (66) of the inventive relief valve (50) is also smaller than the diameter of the pilot seat of many prior art valves. <IMAGE> |
