疊加式液控單向閥主要由鋼制閥體,一個或兩個單向閥,先導級活塞組成.單向閥的主閥芯內(nèi)有先導錐閥芯,通過它保證單向閥打開.當油液由A1流向A2,單向閥打開,同時先導級活塞被推至右位,通過先導錐閥芯的作用單向閥打開.

華德2FRM10二通流量控制閥部分型號：
2FRM10-21B/2L 2FRM10-21B/5L 2FRM10-21B/10L 2FRM10-21B/16L
2FRM10-21B/25L 2FRM10-21B/35L 2FRM10-21B/50L 2FRM10-21B/50LB
2FRM10-21B/2LB 2FRM10-21B/5LB 2FRM10-21B/10LB 2FRM10-21B/16LB
2FRM10-21B/25LB 2FRM10-21B/35LB 2FRM10-21B/50LB 2FRM5-31B/15QB
2FRM16-21B/40L 2FRM16-21B/60L 2FRM16-21B/80L 2FRM16-21B/100L
2FRM16-21B/125L 2FRM16-21B/160L 2FRM16-21B/80LB 2FRM16-21B/100LB
2FRM16-21B/40LB 2FRM16-21B/60LB 2FRM16-21B/80LB 2FRM16-21B/100LB
2FRM16-21B/125LB 2FRM16-21B/160LB 2FRM5-31B/10QB 2FRM5-31B/15QB
2FRM5-31B/0.2Q 2FRM5-31B/0.6Q 2FRM5-31B/1.2Q 2FRM5-31B/3Q
2FRM5-31B/6Q 2FRM5-31B/10Q 2FRM5-31B/15Q 2FRM5-31B/15QB
2FRM5-31B/0.2QB 2FRM5-31B/0.6QB 2FRM5-31B/1.2QB 2FRM5-31B/3QB
2FRM5-31B/6QB 2FRM5-31B/10QB 2FRM5-31B/15QB
華德液壓閥部分型號：
DB20-1-50B/50 DB20-1-50B/100 DB20-1-50B/200 DB20-1-50B/315
DB20-2-50B/50 DB20-2-50B/100 DB20-2-50B/200 DB20-2-50B/315
DBW10B-2-50B/3156CW220-50N9Z5L DBW10B-2-50B/3156CG24N9Z5L
DBW10A-1-50B/506CW220-50N9Z5L DBW10A-1-50B/506CG24N9Z5L
DBW10A-2-50B/506CW220-50N9Z5L DBW10A-2-50B/506CG24N9Z5L
DBW20B-2-50B/3156CW220-50N9Z5L DBW20B-2-50B/3156CG24N9Z5L
DBW20A-1-50B/506CW220-50N9Z5L DBW20A-1-50B/506CG24N9Z5L
DBW20A-2-50B/506CW220-50N9Z5L DBW20A-2-50B/506CG24N9Z5L
DBW30B-2-50B/3156CW220-50N9Z5L DBW30B-2-50B/3156CG24N9Z5L
DBW30A-1-50B/506CW220-50N9Z5L DBW30A-1-50B/506CG24N9Z5L
DBW30A-2-50B/506CW220-50N9Z5L DBW30A-2-50B/506CG24N9Z5L
Z2S10-1-20B/ Z2S10-2-20B/ Z2S10-3-20B/
Z2S10A1-20B/ Z2S10A2-20B/ Z2S10A3-20B/
Z2S10B1-20B/ Z2S10B2-20B/ Z2S10B3-20B/

當進油口A1和B1出現(xiàn)失壓,彈簧作用力將閥芯緊壓在閥座上,切斷了單向閥與執(zhí)行機構(gòu)之間的油路.