力士乐比例式减压阀是采用节流耗能达到降压的功能，能使高压、超高压设备和高压管道内的高压水通过此阀将高压水降至低压所需压力后排出，使高压系统压力均匀降低。
比例减压阀：压降从50兆帕至于1.6兆帕，可以调节排泄压力。
部分比例减压阀型号如下：
三通比例减压阀3DREP 3DREPE
R9009544743DREP6A-2X/16EG24K4/M
R9009544173DREP6A-2X/25EG24K4/M
R9009544183DREP6A-2X/45EG24K4/M
R9009544193DREP6C-2X/16EG24K4/M
R9009544203DREP6C-2X/25EG24K4/M
R9009544213DREP6C-2X/45EG24K4/M
R9009544223DREPE6A-2X/16EG24K31/A1M
R9009544233DREPE6A-2X/25EG24K31/A1M
R9009544243DREPE6A-2X/45EG24K31/A1M
R9009544253DREPE6C-2X/16EG24K31/A1M
R9009544273DREPE6C-2X/25EG24K31/A1M
R9009544283DREPE6C-2X/45EG24K31/A1M
比例减压阀先导ZDRE ZDREE
R900954705ZDREE10VP2-1X/50XLMG24K31M
R900921799ZDREE10VP2-1X/100XLMG24K31M
R900948587ZDREE10VP2-1X/200XLMG24K31M
R900935341ZDREE10VP2-1X/315XLMG24K31M
比例减压阀DREM DREME型
R901320205 DREE 10-6X/100YG24K31A1M
R901299774 DREE 10-6X/100YG24K31A1V
R901302026 DREE 10-6X/100YG24K31F1M
R901347474 DREE 10-6X/100YG24K31F1V
R901298775 DREE 10-6X/100YMG24K31A1M
R901269802 DREE 10-6X/100YMG24K31A1V
R901450695 DREE 10-6X/100YMG24K31F1M
R901272204 DREE 10-6X/100YMG24K31F1V
R901273234 DREE 10-6X/200YG24K31A1M
R901240104 DREE 10-6X/200YG24K31A1V
R901278156 DREE 10-6X/200YG24K31F1M
R901300488 DREE 10-6X/200YG24K31F1V
R901272516 DREE 10-6X/200YMG24K31A1M
R901321146 DREE 10-6X/200YMG24K31A1V
R901278464 DREE 10-6X/200YMG24K31F1M
R901154508 DREE 10-6X/200YMG24K31F1V
R901442731 DREE 10-6X/200YMG24K31F1V-4
R901298256 DREE 10-6X/315YG24K31A1M
R901279568 DREE 10-6X/315YG24K31A1V
R901289406 DREE 10-6X/315YG24K31F1M
R901328264 DREE 10-6X/315YG24K31F1V
R901278309 DREE 10-6X/315YMG24K31A1M
R901326166 DREE 10-6X/315YMG24K31A1M-4
R901314410 DREE 10-6X/315YMG24K31A1V
R901326169 DREE 10-6X/315YMG24K31A1V-4
R901438092 DREE 10-6X/315YMG24K31F1M
R901328238 DREE 10-6X/315YMG24K31F1M-4
R901348210 DREE 10-6X/315YMG24K31F1V
R901327462 DREE 10-6X/315YMG24K31F1V-4
R901350583 DREE 10-6X/50YG24K31A1M
R901361836 DREE 10-6X/50YG24K31F1M
R901336135 DREE 10-6X/50YMG24K31A1M
R901378478 DREE 10-6X/50YMG24K31A1V
R901342656 DREE 10-6X/50YMG24K31F1M
R901318859 DREE 20-6X/100YG24K31A1M
R901299828 DREE 20-6X/100YG24K31A1V
R901311818 DREE 20-6X/100YG24K31F1M
R901298796 DREE 20-6X/100YG24K31F1V
R901311901 DREE 20-6X/100YMG24K31A1M
R901325833 DREE 20-6X/100YMG24K31F1V
R901243781 DREE 20-6X/200YG24K31A1M
R901240106 DREE 20-6X/200YG24K31A1V
R901366305 DREE 20-6X/200YG24K31F1M
R901272515 DREE 20-6X/200YG24K31F1V
R901275714 DREE 20-6X/200YMG24K31A1M
R901383694 DREE 20-6X/200YMG24K31A1V
R901363842 DREE 20-6X/200YMG24K31F1M
R901449268 DREE 20-6X/200YMG24K31F1V
R901266392 DREE 20-6X/315YG24K31A1M
R901305941 DREE 20-6X/315YG24K31A1V
R901363873 DREE 20-6X/315YG24K31F1M
R901278310 DREE 20-6X/315YMG24K31A1M
R901325604 DREE 20-6X/315YMG24K31A1V
R901408880 DREE 20-6X/315YMG24K31F1M
R901328266 DREE 20-6X/315YMG24K31F1V
R901377535 DREE 20-6X/50YG24K31A1M
R901415664 DREE 20-6X/50YG24K31A1V
R901298342 DREE 20-6X/50YMG24K31A1M
R901390117 DREE 20-6X/50YMG24K31A1V
R901340340 DREE 20-6X/50YMG24K31F1V
先导式比例阀减压阀DRE6X DREB6X
0811402059DRE6X-1X/75MG24-8NZ4M
0811402055DRE6X-1X/175MG24-8NZ4M
0811402058DRE6X-1X/310MG24-8NZ4M
0811402050DREB6X-1X/75MG24-25Z4M
0811402051DREB6X-1X/175MG24-25Z4M
0811402052DRE6BX-1X/310MG24-25Z4M
比例减压阀3DRE（M） 3DRE（M）E
R9009545213DREE10P-6X/50YG24K31V
R9009545173DREE10P-6X/100YG24K31V
R9009486213DREE10P-6X/200YG24K31V
R9009525873DREE10P-6X/315YG24K31V
R9009545243DREE16P-6X/50YG24K31V
R9009545223DREE16P-6X/100YG24K31V
R9009545233DREE16P-6X/200YG24K31V
