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September 14, 2026

Moog D661-4594C nameplate: type G75KXAA5VSX2HA, serial 2023390626, Rev L date 09/23, Pp 350 bar, Px 350 bar, signal ±10 mA, supply 24 V DC, with CE mark, DataMatrix code and port row X T A P B T1 Y.

Moog D661-4594C, Eight Months Old: A Wide Loop That Still Centers Itself

Nameplate of Moog D661-4041 servo valve, Rev J, date 10/12, serial D331, Pp 350 bar, Px 280 bar, command signal ±10 V, supply 24 V DC

Moog D661-4041 No-Load Flow Sweep: Symmetric Flow, Asymmetric Gain, and What the Stars Mean

Nameplate of Moog electro-hydraulic servo valve G761-3004B, type H38JOGM4VPL, serial 15914, dated 12-2023, made in Philippines, rated 4500 psi supply and -40 to +40 mA command signal

Moog G761-3004B: A Servo Valve With No Electronics to Blame

Moog D633-525B nameplate on the test manifold: type R16KO1F0VSX2, serial 2025191878, Rev G date 05/25, Pp 350 bar, signal ±10 mA, supply 24 V, with CE mark and DataMatrix code

Moog D633-525B, Fourteen Months Old: The Cleanest Hysteresis Our Bench Has Printed

Moog D634-319C nameplate on the test manifold: type R40KO2M0NSP2, serial D5054, Rev D date 02/14, Pp 350 bar, signal ±10 mA, supply 24 V, ports T A P B T2 Y below.

Moog D634-319C Direct-Drive Servo Valve: A 2014 Build, a Flagged Null Offset, and a Symmetry Number Worth Keeping

EMG servo valve nameplate, type SV1-1-10/16/315/6, serial 2243017, part number 226700, year of construction 2012, rated 16 l/min at 20 bar, 315 bar max, 0.3 A and 40 Ohm coil, made in Wenden Germany

A 2012-Built EMG SV1-10 Servo Valve, Swept in 2026: Fourteen Years Old and Still Drawing a Clean Line

Moog D661-4577C nameplate: type G45HOAA4VSX2HA, Rev M, date 01/22, serial 2022011221, Pp 280 bar, signal plus-minus 10 mA, supply 24 V DC

Moog D661-4577C Servo-Proportional Valve: A 2023 Static Record Worth Publishing Now

Parker TDP040E nameplate

Parker TDP040EH99C2NB0 Servo Valve Static Null and Gain Check

4WRPH 6 C3 B40L-20/G24Z4/M, MNR 0811404036

Rexroth 0811404036 4WRPH 6 C3 B40L-20 Test Report & Video

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