节流口堵塞原因：

1、油液中的机械杂质或因氧化析出的胶质、沥青、碳渣等污物堆积在节流缝隙处。

2、由于油液老化或受到挤压后产生带电的极化分子，而节流缝隙的金属表面上存在电位差，故极化分子被吸附到缝隙表面，形成牢固的边界吸附层，吸附层厚度一般为5~8微米，因而影响了节流缝隙的大小。以上堆积、吸附物增长到一定厚度时，会被液流冲刷掉，随后又重新附在阀口上。这样周而复始，就形成了流量的脉动。

3、阀口压差较大时，因阀口温度高，液体受挤压的程度增强，金属表面也更易受摩擦作用而形成电位差，因此压差大时容易产生堵塞现象。

减轻节流口堵塞的措施：

1、选择水力半径大的薄刃节流口。

2、精密过滤并定期更换油液。

3、适当减小节流口前后的压差。

4、采用电位差较小的金属材料、选用抗氧化稳定性好的油液、减小节流口表面粗糙度。

型号提供：

REXROTH R900348007 S10/A0.0/12

力士乐管式单向阀S10A1.  R900420531 

REXROTH R900420531 S10A1.0/
REXROTH R900497659 S10A1.0/12

力士乐管式单向阀S10A1.  R900420531 

REXROTH R900490600 S15A0.0/12
REXROTH R900420537 S15A1.0/
REXROTH R900455137 S15A1.0/12
REXROTH R900486216 S15A5.0/12
REXROTH R900343034 S20A0.0/12

REXROTH R900470782 S20A1.0/12

REXROTH R900353560 S20A2.0/12
REXROTH R900470822 S20A3.0/12
REXROTH R900347261 S20A5.0/12
REXROTH R900344017 S25A0.0/12
REXROTH R900420511 S25A1.0/
REXROTH R900455138 S25A1.0/12
REXROTH R900354272 S25A5.0/12
REXROTH R900415457 S30A0.0/12
REXROTH R900420519 S30A1.0/
REXROTH R900492887 S30A1.0/12
REXROTH R900342882 S30A2.0/12
REXROTH R900470823 S30A3.0/12
REXROTH R900488016 S8A1.0/12
REXROTH R900348007 S10A0.0//12
REXROTH R900420531 S10A1.0/
REXROTH R900497659 S10A1.0//12
REXROTH R900424731 S10A1.0//5
REXROTH R900356466 S10A2.0//12
REXROTH R900587740 S10A2.0//5
REXROTH R900497660 S10A3.0//12
REXROTH R900470821 S10A5.0//12
REXROTH R900490600 S15A0.0//12
REXROTH R900420537 S15A1.0/
REXROTH R900455137 S15A1.0//12
REXROTH R900427399 S15A1.0//5
REXROTH R900343481 S15A2.0//12
REXROTH R900438478 S15A2.0//5
REXROTH R900490601 S15A3.0//12
REXROTH R900420522 S15A3.0//5
REXROTH R900486216 S15A5.0//12
REXROTH R900453799 S15A5.0//5
REXROTH R900343034 S20A0.0//12
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REXROTH R900470782 S20A1.0//12
REXROTH R900420526 S20A1.0//5
REXROTH R900353560 S20A2.0//12
REXROTH R900423407 S20A2.0//5
REXROTH R900470822 S20A3.0//12
REXROTH R900429261 S20A3.0//5
REXROTH R900347261 S20A5.0//12
REXROTH R900344017 S25A0.0//12
REXROTH R900445030 S25A0.0//5
REXROTH R900420511 S25A1.0/
REXROTH R900455138 S25A1.0//12
REXROTH R900420512 S25A1.0//5
REXROTH R900347547 S25A2.0//12
REXROTH R900423411 S25A2.0//5
REXROTH R900340147 S25A3.0//12
REXROTH R900354272 S25A5.0//12
REXROTH R900415457 S30A0.0//12
REXROTH R900433632 S30A0.0//5
REXROTH R900420519 S30A1.0/
REXROTH R900492887 S30A1.0//12
REXROTH R900420500 S30A1.0//5
REXROTH R900342882 S30A2.0//12
REXROTH R900420503 S30A2.0//5
REXROTH R900470823 S30A3.0//12
REXROTH R900347681 S30A5.0//12
REXROTH R900422882 S6A1.0//5
REXROTH R900488016 S8A1.0//12
REXROTH R900348007 S10A0.0//12
REXROTH R900420531 S10A1.0/
REXROTH R900497659 S10A1.0//12
REXROTH R900356466 S10A2.0//12
REXROTH R900497660 S10A3.0//12
REXROTH R900470821 S10A5.0//12
REXROTH R900490600 S15A0.0//12
REXROTH R900420537 S15A1.0/
REXROTH R900455137 S15A1.0//12
REXROTH R900343481 S15A2.0//12
REXROTH R900490601 S15A3.0//12
REXROTH R900486216 S15A5.0//12
REXROTH R900343034 S20A0.0//12
REXROTH R900470782 S20A1.0//12
REXROTH R900353560 S20A2.0//12
REXROTH R900470822 S20A3.0//12
REXROTH R900347261 S20A5.0//12
REXROTH R900344017 S25A0.0//12
REXROTH R900420511 S25A1.0/
REXROTH R900455138 S25A1.0//12
REXROTH R900347547 S25A2.0//12
REXROTH R900340147 S25A3.0//12
REXROTH R900354272 S25A5.0//12
REXROTH R900415457 S30A0.0//12
REXROTH R900420519 S30A1.0/
REXROTH R900492887 S30A1.0//12
REXROTH R900342882 S30A2.0//12
REXROTH R900470823 S30A3.0//12
REXROTH R900347681 S30A5.0//12
REXROTH R900488016 S8A1.0//12

力士乐单向阀R900459203  Z2FS16-8-3X/S

力士乐单向阀R900457256  Z2FS16-8-3X/S2

力士乐单向阀R901413310  Z2FS16-8-3X/S2J3

力士乐单向阀R901413311  Z2FS16-8-3X/S2J3V

力士乐单向阀R900473688  Z2FS16-8-3X/S2V

力士乐单向阀R901413313  Z2FS16-8-3X/SJ3

力士乐单向阀R901413315  Z2FS16-8-3X/SJ3V

力士乐单向阀R900470529  Z2FS16-8-3X/SV

力士乐单向阀R900073409  Z2FS16-8-3X/SV=LB

力士乐单向阀R900426851  Z2FS16A8-3X/S

力士乐单向阀R900348227  Z2FS16A8-3X/S2

力士乐单向阀R900591255  Z2FS16A8-3X/S2V

力士乐单向阀R900498950  Z2FS16B8-3X/S

力士乐单向阀R900481621  Z2FS6-2-4X/1Q

力士乐单向阀R900481623  Z2FS6-2-4X/1QV

力士乐单向阀R900481622  Z2FS6-2-4X/2Q

力士乐单向阀R901435983  Z2FS6-2-4X/2QJ3V/60

力士乐单向阀R900481624  Z2FS6-2-4X/2QV

力士乐单向阀R900727967  Z2FS6-2-4X/2QV/60