D31FHE52A4NE00，D31FHE52A4NE00，滑閥位置反饋、載荷壓力反饋和載荷流量反饋；閥的級(jí)數(shù)可分單級(jí)、雙級(jí)和多級(jí)。在電液伺服閥中，將電信號(hào)轉(zhuǎn)變?yōu)樾D(zhuǎn)或直線運(yùn)動(dòng)。

Parker派克生產(chǎn)銷售的直動(dòng)式比例換向閥有：D*FW/D*FT系列，D*FL系列，WL*NG06系列，WL*NG10系列，D*FX系列，RLL系列，D*FH/D1FM系列。先導(dǎo)式比例換向閥有：D*1FW/D*1FT系列，D*1FS系列，D41FH系列，D*6FH系列。

D41FBE01FC1NF00

D41FBE01FC1NG00

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D41FHB31C1NB00

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D41FHE01C1NE00

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D41FHE01F1NE00

D41FHA31E1VB00

D41FHA31E2VB00

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D41FHA61B5NB00

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D41FHB31E2NB00

D41FHB31F1VB00

D41FHB32E4NB20

D41FHB41D2NB00

D41FHB41D4NB00

D41FHB41D4VB00

D41FHB61E2VB00

D41FHE01B2NE00

D41FHE01B5NE00

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D41FHE02F1VB00

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D41FHE21D1VB00

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D41FHE21D4NE00

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D41FHE21D5NE00

D41FHE22D2NB00

D41FHE22D4VB00

D41FHE52E4VB00

D41FHE52F1VB00

D41FLA32DC4NT00

D41FLA41DC1NT00

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D41FLA42DC4NT00

D41FLA42DC4NW00

D41FLB41DC4NT00

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D41FLE02DC4NT00

D41FLE02DC4NT0013X6313

D41FLE02DC4NW00

D41FLE02DC4NW0013X6313

D41FLE02DC4VW00

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D41FLE21DC4NW04

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D41FLE22DC1NT00

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D41FSB32C4VXW0

D41FTA31FC4NF00

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D41FTA42DC4NF00

D41FTB34FC4NF00

D41FTE01FC1VF02

D41FTE01FC2NF02

D41FTE01FC4NG02

D41FTE02FC1VF02

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D41FTE02FC4VF02

D41FTE02FC5NF02

D41FTE03FC4NF00

D41FTE21DC1NF00

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D41FTE21DC4NG00

D41FTE21DC4VF00

D41FTE22DC1NF00

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D41FTE22DC4NF00

D41FTE22DC4VF00

D41FWE21DC4NLW0

D41FWE22DC1NLW0

D41FWE22DC4NLW0

D41FBE01FC1NF00

D41FBE01FC1NG00

D41FBE01FC4NF00

D41FHB31C1NB00

D41FHB31C1NE00

D41FHB31E1NB00

D41FHB31E1NE00

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D41FHB31F1NE00

D41FHE01C1NB00

D41FHE01C1NE00

D41FHE01E1NB00

D41FHE01E1NE00