節流閥是通過改變節流截面或節流長度以控制流體流量的閥門。將節流閥和單向閥并聯則可組合成單向節流閥。節流閥和單向節流閥是簡易的流量控制閥，在定量泵液壓系統中，節流閥和溢流閥配合，可組成三種節流調速系統，即進油路節流調速系統、回油路節流調速系統和旁路節流調速系統。節流閥沒有流量負反饋功能，不能補償由負載變化所造成的速度不穩定，一般僅用于負載變化不大或對速度穩定性要求不高的場合。
廠家質保Z2S6-1-6X-V原裝力士樂Rexroth疊加閥
規格 6
組件系列 4X
zui大工作壓力 315 bar
zui大流量 80 l/min
疊加閥油口安裝面符合 DIN 24340，形式 A油口安裝面符合 ISO 4401-03-02-0-05（帶定位孔）用于限制 2 個執行機構油口的主油流量或先導油流量。4 種調整類型： 帶鎖緊螺母和保護帽的調節螺釘 帶刻度可鎖定旋鈕 內六角帶刻度主軸 帶刻度旋鈕用于供油或回油節流。
廠家質保Z2S6-1-6X-V原裝力士樂Rexroth疊加閥
型號如下：
Z2S16-1-5X/
Z2S16A1-5X/
Z2S16B1-5X/
Z2S6-1-6X/
Z2S6-2-6X/
Z2S6-3-6X/
Z2S6A1-6X/
Z2S6A2-6X/
Z2S6B1-6X/
Z2S6-1-6X/V
Z2S6-2-6X/V
Z2S6-3-6X/V
Z2S6A1-6X/V
Z2S6A2-6X/V
Z2S16-2-5X/
Z2S10-1-3X/
Z2S10A1-3X/
Z2S10B1-3X/
Z2S10-1-3X/V
Z2S10A1-3X/V
Z2S10B1-3X/V
Z2S16-3-5X/
Z2S16-1-5X/V
Z2S10-2-3X/
Z2S10-3-3X/
Z2S22-1-5X/
Z2S22-2-5X/
Z2S22A1-5X/
Z2S22B1-5X/
Z2S10A2-3X/
Z2S10-1-3X/SO30
Z2S10-2-3X/SO30
Z2S10B2-3X/
Z2S22-4-5X/
Z2S22-1-5X/V
Z2S10A3-3X/
Z2S22B2-5X/
Z2S10A1-3X/SO30
Z2S16B1-5X/V
R900989094 Z2FS10-3-3X/
R900727967 Z2FS6-2-4X/2QV/60
R900018224 XM-Z2FS6-2-4X/2QV
R900595709 Z2FS6B5-4X/2QV
R900591603 Z2FS6A5-4X/2QV
R900586224 Z2FS6-3-4X/1QV
R900582719 Z2FS6-5-4X/1QV
R900581526 Z2FS6A2-4X/1QV
R900571890 Z2FS10A5-3X/S2
R900569858 Z2FS10A3-3X/S2V
R900564522 Z2FSK10-2-1X/2QV
R900564521 Z2FSK6-2-1X/2QV
R900560900 Z2FS10-5-3X/VSO30
R900524995 Z2FS10A3-3X/SV
R900523926 Z2FS10-7-3X/V
R900523737 Z2FS10-3-3X/V
R900523578 Z2FS10A5-3X/S2V
R900520680 Z2FS10B5-3X/SV
R900517814 Z2FS10B5-3X/S2V
R900517813 Z2FS10A5-3X/SV
R900517812 Z2FS10-5-3X/V
R900505004 Z2FS6-5-4X/2Q
R900502066 Z2FS6A3-4X/2QV
R900481624 Z2FS6-2-4X/2QV
R900481623 Z2FS6-2-4X/1QV
R900481622 Z2FS6-2-4X/2Q
R900481621 Z2FS6-2-4X/1Q
R900476838 Z2FS6-5-4X/2QV
R900473688 Z2FS16-8-3X/S2V
R900470529 Z2FS16-8-3X/SV
R900466284 Z2FS22A8-3X/S2
R900465879 Z2FS6B7-4X/2QV
R900459203 Z2FS16-8-3X/S
R900457256 Z2FS16-8-3X/S2
R900456783 Z2FS22-8-3X/S
R900455714 Z2FS6-3-4X/2QV
R900443176 Z2FS22-8-3X/S2
R900441810 Z2FS6-7-4X/2QV
R900440565 Z2FS6B2-4X/2QV
R900439389 Z2FS6A2-4X/2QV
R900340002 Z2FS22B8-3X/S2
R900205531 Z2FS10-5-3X/SO30
R900073408 Z2FS16-8-3X/S2=LB
R900071261 Z2FS10B3-3X/S2V
R900057401 Z2FS10B3-3X/SV