直动式, 减压/溢流阀
直动式溢流型减压阀将进口（口2）高压主油路压力调节减至口1所需的减压压力，同时具备从口1到油箱（口3）的全流量溢流功能。此类阀的阻尼结构实现对高的减压力的稳定调节
美国SUN减压阀及减泄压阀
PBJBLAN PBFBLBN PBBBLBN PBDBLAN PBDBLWN PBFBLWN PBBBLNN
PBBBLWN PBBBLAN PBBBLBV PBDB8WN PBFB8WN PBFBLAN PBDBLBN
PBDBLAV PBFBLNN PBJBLBN PBDBKBN PBHBLAV PBHBLAN PBBBLQN
PPFBLEN PPDBLWN PPJBLAN PPDBLDN PPDB8DN PPFBLAN PPFB8WN
PPHBLWN PPFBLWN PPFBLBN PPFCABN PPFBKDN PPDBLAV PPFB8DN
PPJBLBN PPDBLNN PPDBLQN PPHBLDN PPFRLDN PPFBLDN PPDBCBN
PPHBLAN PPDBLBN PPFBKBN PPJBLNN PPHBLBN PPFBLNN PPJBLWN
PVJALAV PVHALBN PVDALAN PVJCLWN PVDBLWN PVFALBN PVDALEN
PVDALBN PVDALAV PVHALAN PVFALAN PVHA8WN PVFBLAN PVJALWN
PVDBLAN PVFBLWN PVJALAN
RDBALDN RDFALAN RDJALSN RDHALSN RDHALAV RDDALBN RDFALCV
RDHALCN RDDALEN RDJALAN RDFALDN RDHALWN RDJALCN RDDALWV
RDDALDN RDBALEN RDDALWN RDFALCN RDDALAN RDFALBN RDJALBN
RDACLBN RDDALAV RDFALAV RDBALEV RDJALBV RDFALEN RDDALCN
RDHALDN RDBALWN RDDACAN RDDTQAN RDHALBN RDJALWN RDBALSN
RDBALAN RDBALBN RDDALCN RDDALSN
RVEALBN RVCALAN RVIALWN RVCSLCN RVEALAN RVEALWN RVGSLCN
RVEALWN RVBALCN RVIALAN RVGALDN RVCSLWN RVESLCN RVETLAN
RVGSLAN RVEALCN RVCALBN RVEALQN RVGALWN RVIALCN RVCSLAN
RVCD8WN RVCDLCN RVGALCN RVEALYN RVGALAN
