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150T-116，150T-116-F-R,150T-125-F-R，150T-125,150T-48-F-R，150T-48，150T-61，150T-61-F-R

150T-75，150T-75-F-R，150T-94，150T-94-F-R

50T-07，50T-07-F-R，50T-12，50T-12-F-R，50T-14，50T-14-F-R，50T-17，50T-17-F-R

50T-19，50T-19-F-R，50T-21-F-R，50T-23，50T-23-F-R，50T-26，50T-26-F-R,50T-30-F-R

50T-30，50T-36，50T-36-F-R，50T-40，50T-40-F-R

FVMB-1V-10，F(xiàn)VMB-1V-10-L，F(xiàn)VMB-2V-10，F(xiàn)VMB-2V-10-L，F(xiàn)VMB-3V-10，F(xiàn)VMB-3V-10-L

FVMB-4V-10，F(xiàn)VMB-4V-10-L，F(xiàn)VMB-5V-10，F(xiàn)VMB-5V-10-L

FVMF-1V-10，F(xiàn)VMF-1V-10-L，F(xiàn)VMF-2V-10，F(xiàn)VMF-2V-10-L，F(xiàn)VMF-3V-10，F(xiàn)VMF-3V-10-L

FVMF-4V-10，F(xiàn)VMF-4V-10-L，F(xiàn)VMF-5V-10，F(xiàn)VMF-5V-10-L

FVSB-1V-10，F(xiàn)VSB-1V-10-L，F(xiàn)VSB-2V-10，F(xiàn)VSB-2V-10-L，F(xiàn)VSB-3V-10，F(xiàn)VSB-3V-10-L

FVSB-4V-10，F(xiàn)VSB-4V-10-L，F(xiàn)VSB-5V-10，F(xiàn)VSB-5V-10-L，F(xiàn)VSB-6V-10，F(xiàn)VSB-6V-10-L

FVSF-1V-10，F(xiàn)VSF-1V-10-L，F(xiàn)VSF-2V-10，F(xiàn)VSF-2V-10-L，F(xiàn)VSF-3V-10，F(xiàn)VSF-3V-10-L

FVSF-4V-10，F(xiàn)VSF-4V-10-L，F(xiàn)VSF-5V-10，F(xiàn)VSF-5V-10-L，F(xiàn)VSF-6V-10，F(xiàn)VSF-6V-10-L

JS-G06-4CA，JS-G06-4CD-75，JSP-G03-2CA-40

KSO-G02-2BA-10，KSO-G02-2BA-30-N，KSO-G02-2BP-30-N，KSO-G02-2CA，KSO-G02-2CA-10

KSO-G02-2CA-30，KSO-G02-2CP-10，KSO-G02-2CP-30-N，KSO-G02-2DP，KSO-G02-3AA-30-T66

KSO-G02-4CA，KSO-G02-4CA-10，KSO-G02-4CA-30，KSO-G02-4CB-30，KSO-G02-4CP，KSO-G02-4CP-30-N

KSO-G02-7CA-30-N，KSO-G03-2BP-30-N，KSO-G03-2DD-20，KSO-G03-4CB-20，KSO-G04-29CY

KSO-GO2-2DA-30，KSO-GO2-44CP-30

SP08-A0-F-R-01-51，SP08-A1-F-R-01-51，SP08-A2-F-R-01-51，SP08-A3-F-R-01-51

SP16-A0-F-R-01-51，SP16-A1-F-R-01-51，SP16-A2-F-R-01-51，SP16-A3-F-R-01-51

SP36-A0-F-R-01-51，SP36-A1-F-R-01-51，SP36-A2-F-R-01-51，SP36-A3-F-R-01-51

SP46-A0-F-R-01-51，SP46-A1-F-R-01-51，SP46-A2-F-R-01-51，SP46-A3-F-R-01-51

SP70-A1-F-R-01-51，SP70-A2-F-R-01-51，SP70-A3-F-R-01-51

TS-G02-20A，TS-G02-20AA，TS-G02-20AB，TS-G02-20AC，TS-G02-20AD，TS-G02-20AP

TS-G02-20B，TS-G02-20BA，TS-G02-20BB，TS-G02-20BC，TS-G02-20BD，TS-G02-20BP

TS-G02-2A，TS-G02-2A-2T，TS-G02-2AA，TS-G02-2AA-10，TS-G02-2AB，TS-G02-2AB-10

TS-G02-2AC，TS-G02-2AC-10，TS-G02-2AD，TS-G02-2AD-10，TS-G02-2A-H2，TS-G02-2A-H8

TS-G02-2A-H91，TS-G02-2AP，TS-G02-2AP-10，TS-G02-2B，TS-G02-2B-2T，TS-G02-2B-81T

TS-G02-2B-9T，TS-G02-2BA，TS-G02-2BA-10，TS-G02-2BB，TS-G02-2BB-10，TS-G02-2BB-2T-HC

TS-G02-2BC，TS-G02-2BC-10，TS-G02-2BD，TS-G02-2BD-10，TS-G02-2B-H2，TS-G02-2BP

TS-G02-2BP-10，TS-G02-2BP-H，TS-G02-2CA，TS-G02-2CA-10，TS-G02-2CB，TS-G02-2CB-10

TS-G02-2CB-H，TS-G02-2CC，TS-G02-2CC-10，TS-G02-2CD，TS-G02-2CD-10，TS-G02-2CP

TS-G02-2CP-10，TS-G02-2CP-H，TS-G02-2D，TS-G02-2DA，TS-G02-2DA-10，TS-G02-2DB

TS-G02-2DB-10，TS-G02-2DC，TS-G02-2DC-10，TS-G02-2DD，TS-G02-2DD-10，TS-G02-2DP

TS-G02-2DP-10，TS-G02-2DP-N-T，TS-G02-2N，TS-G02-2NA，TS-G02-2NB，TS-G02-2NC

TS-G02-2ND，TS-G02-2NP，TS-G02-3A，TS-G02-3AA，TS-G02-3AB，TS-G02-3AC，TS-G02-3AD

TS-G02-3A-H3，TS-G02-3AP，TS-G02-3A-T5，TS-G02-3A-T51，TS-G02-3A-T66，TS-G02-3B

TS-G02-3B-3T，TS-G02-3B-51H，TS-G02-3B-5H，TS-G02-3B-66H，TS-G02-3BA，TS-G02-3BA-10

TS-G02-3BB，TS-G02-3BB-10，TS-G02-3BC，TS-G02-3BC-10，TS-G02-3BD，TS-G02-3BD-10

TS-G02-3BP，TS-G02-3BP-10，TS-G02-3C，TS-G02-3CA，TS-G02-3CA-10，TS-G02-3CB

TS-G02-3CB-10，TS-G02-3CC，TS-G02-3CC-10，TS-G02-3CD，TS-G02-3CD-10，TS-G02-3CP

TS-G02-3CP-10，TS-G02-44C，TS-G02-44CA，TS-G02-44CA-10，TS-G02-44CB，TS-G02-44CB-10

TS-G02-44CC，TS-G02-44CC-10，TS-G02-44CD，TS-G02-44CD-10，TS-G02-44CP

TS-G02-44CP-10，TS-G02-4C，TS-G02-4CA，TS-G02-4CA-10，TS-G02-4CA-H，TS-G02-4CB

TS-G02-4CB-10，TS-G02-4CB-H，TS-G02-4CC，TS-G02-4CC-10，TS-G02-4CD，TS-G02-4CD-10

TS-G02-4CP，TS-G02-4CP-10，TS-G02-4CP-H，TS-G02-51C，TS-G02-51CA，TS-G02-51CB

TS-G02-51CC，TS-G02-51CD，TS-G02-51CP，TS-G02-5C，TS-G02-5CA，TS-G02-5CB

TS-G02-5CC，TS-G02-5CD，TS-G02-5CP，TS-G02-66C，TS-G02-66CA，TS-G02-66CA-10

TS-G02-66CB，TS-G02-66CB-10，TS-G02-66CC，TS-G02-66CC-10，TS-G02-66CD

TS-G02-66CD-10，TS-G02-66CP，TS-G02-66CP-10，TS-G02-7C，TS-G02-7CA

TS-G02-7CA-10，TS-G02-7CB，TS-G02-7CB-10，TS-G02-7CC，TS-G02-7CC-10

TS-G02-7CD，TS-G02-7CD-10，TS-G02-7CP，TS-G02-7CP-10，TS-G02-81AA

TS-G02-81AB，TS-G02-81AC，TS-G02-81AD，TS-G02-81A-H4，TS-G02-81A-H44

TS-G02-81A-H81，TS-G02-81AP，TS-G02-81C，TS-G02-81CA，TS-G02-81CB

TS-G02-81CC，TS-G02-81CD，TS-G02-81CP，TS-G02-8B44T，TS-G02-8B-44T，TS-G02-8B-4T

TS-G02-8B-8T，TS-G02-8BA，TS-G02-8BB，TS-G02-8BC，TS-G02-8BD，TS-G02-8BP

TS-G02-8C，TS-G02-8CA，TS-G02-8CA-10，TS-G02-8CB，TS-G02-8CB-10，TS-G02-8CC

TS-G02-8CC-10，TS-G02-8CD，TS-G02-8CD-10，TS-G02-8CP，TS-G02-8CP-10，TS-G02-91B-7T

TS-G02-91B-91T，TS-G02-91BA，TS-G02-91BB，TS-G02-91BC，TS-G02-91BD，TS-G02-91BP

TS-G02-91C，TS-G02-91CA，TS-G02-91CB，TS-G02-91CC，TS-G02-91CD，TS-G02-91CP

TS-G02-9AA，TS-G02-9AB，TS-G02-9AC，TS-G02-9AD，TS-G02-9A-H7，TS-G02-9A-H9

TS-G02-9AP，TS-G02-9C，TS-G02-9CA，TS-G02-9CB，TS-G02-9CC，TS-G02-9CD，TS-G02-9CP

TS-G03-20A，TS-G03-20AA，TS-G03-20AA-10，TS-G03-20AB，TS-G03-20AB-10，TS-G03-20AC

TS-G03-20AC-10，TS-G03-20AD，TS-G03-20AD-10，TS-G03-20AP，TS-G03-20AP-10，TS-G03-20B

TS-G03-20BA，TS-G03-20BA-10，TS-G03-20BB，TS-G03-20BB-10，TS-G03-20BC，TS-G03-20BC-10

TS-G03-20BD，TS-G03-20BD-10，TS-G03-20BP，TS-G03-20BP-10，TS-G03-2A，TS-G03-2A-2T

TS-G03-2AA，TS-G03-2AA-10，TS-G03-2AB，TS-G03-2AB-10，TS-G03-2AC，TS-G03-2AC-10

TS-G03-2AD，TS-G03-2AD-10，TS-G03-2A-H2，TS-G03-2A-H8，TS-G03-2A-H91，TS-G03-2AP

TS-G03-2AP-10，TS-G03-2B，TS-G03-2B-2T，TS-G03-2B-81T，TS-G03-2B-9T，TS-G03-2BA

TS-G03-2BA-10，TS-G03-2BB，TS-G03-2BB-10，TS-G03-2BC，TS-G03-2BC-10，TS-G03-2BD

TS-G03-2BD-10，TS-G03-2B-H2，TS-G03-2BP，TS-G03-2BP-10，TS-G03-2BP-C，TS-G03-2C

TS-G03-2CA，TS-G03-2CA-10，TS-G03-2CB，TS-G03-2CB-10，TS-G03-2CB-H，TS-G03-2CC

TS-G03-2CC-10，TS-G03-2CD，TS-G03-2CD-10，TS-G03-2CP，TS-G03-2CP-10，TS-G03-2CP-C

TS-G03-2D，TS-G03-2DA，TS-G03-2DA-10，TS-G03-2DB，TS-G03-2DB-10，TS-G03-2DC

TS-G03-2DC-10，TS-G03-2DD，TS-G03-2DD-10，TS-G03-2DP，TS-G03-2DP-10，TS-G03-2NA

TS-G03-2NA-10，TS-G03-2NB，TS-G03-2NB-10，TS-G03-2NC，TS-G03-2NC-10，TS-G03-2ND

TS-G03-2ND-10，TS-G03-2NP，TS-G03-2NP-10，TS-G03-3A，TS-G03-3AA，TS-G03-3AA-10

TS-G03-3AB，TS-G03-3AB-10，TS-G03-3AC，TS-G03-3AC-10，TS-G03-3AD，TS-G03-3AD-10

TS-G03-3A-H3，TS-G03-3AP，TS-G03-3AP-10，TS-G03-3A-T5，TS-G03-3A-T51，TS-G03-3A-T66

TS-G03-3B，TS-G03-3B-3T，TS-G03-3B-51H，TS-G03-3B-5H，TS-G03-3B-66H，TS-G03-3BA

TS-G03-3BA-10，TS-G03-3BB，TS-G03-3BB-10，TS-G03-3BC，TS-G03-3BC-10，TS-G03-3BD

TS-G03-3BD-10，TS-G03-3BP，TS-G03-3BP-10，TS-G03-3C，TS-G03-3CA，TS-G03-3CA-10

TS-G03-3CB，TS-G03-3CB-10，TS-G03-3CC，TS-G03-3CC-10，TS-G03-3CD，TS-G03-3CD-10

TS-G03-3CP，TS-G03-3CP-10，TS-G03-44C，TS-G03-44CA，TS-G03-44CA-10，TS-G03-44CB

TS-G03-44CB-10，TS-G03-44CC，TS-G03-44CC-10，TS-G03-44CD，TS-G03-44CD-10，TS-G03-44CP

TS-G03-44CP-10，TS-G03-4C，TS-G03-4CA，TS-G03-4CA-10，TS-G03-4CB，TS-G03-4CB-10

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TS-G03-4CP-10，TS-G03-4CP-C，TS-G03-4CP-H，TS-G03-51C，TS-G03-51CA，TS-G03-51CA-10

TS-G03-51CB，TS-G03-51CB-10，TS-G03-51CC，TS-G03-51CC-10，TS-G03-51CD，TS-G03-51CD-10

TS-G03-51CP，TS-G03-51CP-10，TS-G03-5C，TS-G03-5CA，TS-G03-5CA-10，TS-G03-5CB

TS-G03-5CB-10，TS-G03-5CC，TS-G03-5CC-10，TS-G03-5CD，TS-G03-5CD-10，TS-G03-5CP

TS-G03-5CP-10，TS-G03-66C，TS-G03-66CA，TS-G03-66CA-10，TS-G03-66CB，TS-G03-66CB-10

TS-G03-66CC，TS-G03-66CC-10，TS-G03-66CD，TS-G03-66CD-10，TS-G03-66CP，TS-G03-66CP-10

TS-G03-7C，TS-G03-7CA，TS-G03-7CA-10，TS-G03-7CB，TS-G03-7CB-10，TS-G03-7CC，TS-G03-7CC-10

TS-G03-7CD，TS-G03-7CD-10，TS-G03-7CP，TS-G03-7CP-10，TS-G03-81AA，TS-G03-81AA-10

TS-G03-81AB，TS-G03-81AB-10，TS-G03-81AC，TS-G03-81AC-10，TS-G03-81AD，TS-G03-81AD-10

TS-G03-81A-H4，TS-G03-81A-H44，TS-G03-81A-H81，TS-G03-81AP，TS-G03-81AP-10，TS-G03-81C

TS-G03-81CA，TS-G03-81CA-10，TS-G03-81CB，TS-G03-81CB-10，TS-G03-81CC，TS-G03-81CC-10

TS-G03-81CD，TS-G03-81CD-10，TS-G03-81CP，TS-G03-81CP-10，TS-G03-8B44T，TS-G03-8B-44T

TS-G03-8B-4T，TS-G03-8B-8T，TS-G03-8BA，TS-G03-8BA-10，TS-G03-8BB，TS-G03-8BB-10，TS-G03-8BC

TS-G03-8BC-10，TS-G03-8BD，TS-G03-8BD-10，TS-G03-8BP，TS-G03-8BP-10，TS-G03-8C，TS-G03-8CA

TS-G03-8CA-10，TS-G03-8CB，TS-G03-8CB-10，TS-G03-8CC，TS-G03-8CC-10，TS-G03-8CD

TS-G03-8CD-10，TS-G03-8CP，TS-G03-8CP-10，TS-G03-91B-7T，TS-G03-91B-91T，TS-G03-91BA

TS-G03-91BA-10，TS-G03-91BB，TS-G03-91BB-10，TS-G03-91BC，TS-G03-91BC-10，TS-G03-91BD

TS-G03-91BD-10，TS-G03-91BP，TS-G03-91BP-10，TS-G03-91C，TS-G03-91CA，TS-G03-91CA-10

TS-G03-91CB，TS-G03-91CB-10，TS-G03-91CC，TS-G03-91CC-10，TS-G03-91CD，TS-G03-91CD-10

TS-G03-91CP，TS-G03-91CP-10，TS-G03-9AA，TS-G03-9AA-10，TS-G03-9AB，TS-G03-9AB-10

TS-G03-9AC，TS-G03-9AC-10，TS-G03-9AD，TS-G03-9AD-10，TS-G03-9A-H7，TS-G03-9A-H9

TS-G03-9AP，TS-G03-9AP-10，TS-G03-9C，TS-G03-9CA，TS-G03-9CA-10，TS-G03-9CB，TS-G03-9CB-10

TS-G03-9CC，TS-G03-9CC-10，TS-G03-9CD，TS-G03-9CD-10，TS-G03-9CP，TS-G03-9CP-10，TS-G04-2B

TS-G04-2C，TS-G04-3B，TS-G04-3C，TS-G04-4C，TS-G04-5C，TS-G04-66C，TS-G04-6C，TS-G04-81C

TS-G04-8C，TS-G04-91C，TS-G04-9C，TS-G06，TS-G06-2B，TS-G06-2C，TS-G06-3B，TS-G06-3C

TS-G06-4B，TS-G06-4C，TS-G06-5C，TS-G06-7C，TS-G06-8C，TS-G06-9C

VDV-1A-F20-A-35，VDV-1A-F20-B-35，VDV-1A-F20-C-35，VDV-1A-F20-D-35，VDV-1A-F25-A-35

VDV-1A-F25-B-35，VDV-1A-F25-C-35，VDV-1A-F25-D-35，VDV-1A-F30-A-35，VDV-1A-F30-B-35

VDV-1A-F30-C-35，VDV-1A-F30-D-35，VDV-1A-F40-A-35，VDV-1A-F40-B-35，VDV-1A-F40-C-35

VDV-1A-F40-D-35，VDV-1A-F54-A-35，VDV-1A-F54-B-35，VDV-1A-F54-C-35，VDV-1A-F54-D-35

VDV-1A-F70-A-35，VDV-1A-F70-B-35，VDV-1A-F70-C-35，VDV-1A-F70-D-35，VDV-1A-F86-A-35

VDV-1A-F86-B-35，VDV-1A-F86-C-35，VDV-1A-F86-D-35，VDV-1B-F20-A-35，VDV-1B-F20-B-35

VDV-1B-F20-C-35，VDV-1B-F20-D-35，VDV-1B-F25-A-35，VDV-1B-F25-B-35，VDV-1B-F25-C-35

VDV-1B-F25-D-35，VDV-1B-F30-A-35，VDV-1B-F30-B-35，VDV-1B-F30-C-35，VDV-1B-F30-D-35

VDV-1B-F40-A-35，VDV-1B-F40-B-35，VDV-1B-F40-C-35，VDV-1B-F40-D-35，VDV-1B-F54-A-35

VDV-1B-F54-B-35，VDV-1B-F54-C-35，VDV-1B-F54-D-35，VDV-1B-F70-A-35，VDV-1B-F70-B-35

VDV-1B-F70-C-35，VDV-1B-F70-D-35，VDV-1B-F86-A-35，VDV-1B-F86-B-35，VDV-1B-F86-C-35

VDV-1B-F86-D-35，VDV-1C-F20-A-35，VDV-1C-F20-B-35，VDV-1C-F20-C-35，VDV-1C-F20-D-35

VDV-1C-F25-A-35，VDV-1C-F25-B-35，VDV-1C-F25-C-35，VDV-1C-F25-D-35，VDV-1C-F30-A-35

VDV-1C-F30-B-35，VDV-1C-F30-C-35，VDV-1C-F30-D-35，VDV-1C-F40-A-35，VDV-1C-F40-B-35

VDV-1C-F40-C-35，VDV-1C-F40-D-35，VDV-2A-F20-A-35，VDV-2A-F20-B-35，VDV-2A-F20-C-35

VDV-2A-F20-D-35，VDV-2A-F25-A-35，VDV-2A-F25-B-35，VDV-2A-F25-C-35，VDV-2A-F25-D-35

VDV-2A-F30-A-35，VDV-2A-F30-B-35，VDV-2A-F30-C-35，VDV-2A-F30-D-35，VDV-2A-F40-A-35

VDV-2A-F40-B-35，VDV-2A-F40-C-35，VDV-2A-F40-D-35，VDV-2A-F54-A-35，VDV-2A-F54-B-35

VDV-2A-F54-C-35，VDV-2A-F54-D-35，VDV-2A-F70-A-35，VDV-2A-F70-B-35，VDV-2A-F70-C-35

VDV-2A-F70-D-35，VDV-2A-F86-A-35，VDV-2A-F86-B-35，VDV-2A-F86-C-35，VDV-2A-F86-D-35

VDV-2B-F20-A-35，VDV-2B-F20-B-35，VDV-2B-F20-C-35，VDV-2B-F20-D-35，VDV-2B-F25-A-35

VDV-2B-F25-B-35，VDV-2B-F25-C-35，VDV-2B-F25-D-35，VDV-2B-F30-A-35，VDV-2B-F30-B-35

VDV-2B-F30-C-35，VDV-2B-F30-D-35，VDV-2B-F40-A-35，VDV-2B-F40-B-35，VDV-2B-F40-C-35

VDV-2B-F40-D-35，VDV-2B-F54-A-35，VDV-2B-F54-B-35，VDV-2B-F54-C-35，VDV-2B-F54-D-35

VDV-2B-F70-A-35，VDV-2B-F70-B-35，VDV-2B-F70-C-35，VDV-2B-F70-D-35，VDV-2B-F86-A-35

VDV-2B-F86-B-35，VDV-2B-F86-C-35，VDV-2B-F86-D-35，VDV-2C-F54-A-35，VDV-2C-F54-B-35

VDV-2C-F54-C-35，VDV-2C-F54-D-35，VDV-2C-F70-A-35，VDV-2C-F70-B-35，VDV-2C-F70-C-35

VDV-2C-F70-D-35，VDV-2C-F86-A-35，VDV-2C-F86-B-35，VDV-2C-F86-C-35，VDV-2C-F86-D-35

VGPE-F25-A-10-35，VGPE-F25-A-2-35，VGPE-F25-A-6-35，VGPE-F25-B-10-35，VGPE-F25-B-2-35

VGPE-F25-B-6-35，VGPE-F25-C-10-35，VGPE-F25-C-2-35，VGPE-F25-C-6-35，VGPE-F25-D-10-35

VGPE-F25-D-2-35，VGPE-F25-D-6-35，VGPE-F30-A-10-35，VGPE-F30-A-2-35，VGPE-F30-A-6-35

VGPE-F30-B-10-35，VGPE-F30-B-2-35，VGPE-F30-B-6-35，VGPE-F30-C-10-35，VGPE-F30-C-2-35

VGPE-F30-C-6-35，VGPE-F30-D-10-35，VGPE-F30-D-2-35，VGPE-F30-D-6-35，VGPE-F40-A-10-35

VGPE-F40-A-2-35，VGPE-F40-A-6-35，VGPE-F40-B-10-35，VGPE-F40-B-2-35，VGPE-F40-B-6-35

VGPE-F40-C-10-35，VGPE-F40-C-2-35，VGPE-F40-C-6-35，VGPE-F40-D-10-35，VGPE-F40-D-2-35

VGPE-F40-D-6-35，VGPE-F45-A-10-35，VGPE-F45-A-2-35，VGPE-F45-A-6-35，VGPE-F45-B-10-35

VGPE-F45-B-2-35，VGPE-F45-B-6-35，VGPE-F45-C-10-35，VGPE-F45-C-2-35，VGPE-F45-C-6-35

VGPE-F45-D-10-35，VGPE-F45-D-2-35，VGPE-F45-D-6-35

液壓系統(tǒng)平衡回路

為了防止立式液壓缸或垂直運(yùn)動的工作部件由于自重而自行下滑．可在 液壓系統(tǒng)中設(shè)置平衡回路。即在立式液壓缸或垂直運(yùn)動的工作部件的下行回路上設(shè)置適當(dāng)?shù)淖枇?，使其回油腔產(chǎn)生一定的背壓，以平衡其自重并提高液壓缸或垂直運(yùn)動的工作部件的運(yùn)動穩(wěn)定性。

下面我們一起來解決單向順序閥的平衡回路和液控單向閥的平衡回路。

（一）用單向順序閥的平衡回路

圖1所示為由單向順序閥組成的平衡回路。順序閥4的調(diào)整壓力應(yīng)該稍微大于工作部件的重量在液壓缸5下腔形成的壓力。當(dāng)液壓缸5停止時，由于順序閥4的泄漏，運(yùn)動部件仍然會緩慢下降。

（二）用液控單向閥的平衡回路

圖2所示為由液控單向閥組成的平衡回路，是將圖1中的單向順序閥換成液控單向閥。

當(dāng)換向閥3左端動作時，壓力油進(jìn)入液壓缸5上腔，同時打開液控單向閥，活塞和工作部件向下運(yùn)動；當(dāng)換向閥3處于中位時，液壓缸5上腔失壓，關(guān)閉液控單向閥，活塞和工作部件停止運(yùn)動。液控單向閥的密封性好，可以很好地防止活塞和工作部件因泄漏而緩慢下降?；钊凸ぷ鞑考蛳逻\(yùn)動時，回油油路的背壓小，因此功率損耗小。

如圖3所示，在圖1中的單向順序閥4的后面再串聯(lián)一個液控單向閥，就組成了單向順序閥加液控單向閥的平衡回路。

液壓缸液控單向閥可以防止單向順序閥的泄漏而造成的工作部件緩慢下滑，而單向順序閥可以提高回油腔的背壓和油路的工作壓力，使液控單向閥在工作部件下行時始終處于開啟狀態(tài)，

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