Core parameters (DEH condition, Δp = 70 bar) Rated flow rate: 100 L/min (25 gpm) Working pressure: 14 MPa (140 bar, P/A/B), T ≤ 70 bar (standard for power plant EH oil system) Frequency response: −3 dB > 120 Hz (customized for high-frequency response in power plants) Step response: ≈ 16 ms (0 → 100%) Hysteresis: < 1.5% (high-precision DEH) Linearity: < 3.0% Control signal: ±15 mA / 20 Ω (standard for power plants) Feedback: Mechanical feedback MFB, built-in spring tube zeroing (safety shut-off with power-off) Sealing: NBR (−29℃ to +135℃, suitable for EH anti-fuel oil) Weight: ≈ 5.5 kg Medium: Polyether anti-fuel oil (EH oil), dedicated for power plant DEH ✅ 559A comparison within the same series (power vs industrial) D072‑017: 95 L/min / 350 bar / 11 ms → Industrial standard D072‑022A: 150 L/min / 350 bar / 18 ms → Industrial general D072‑559A: 100 L/min / 140 bar / 16 ms / >120 Hz → Dedicated for power plant DEH D072‑383A‑HP5: 225 L/min / 480 bar / 33 ms → Industrial flagship Structural features (customized for power plants) DEH-specific spring tube: automatic zeroing upon power-off, safety shut-off of valves, in line with power plant safety regulations High-response double nozzle baffle: >120 Hz frequency response, meeting the rapid dynamic requirements of turbine control valves Dry torque motor: resistant to EH oil corrosion, maintenance-free, long lifespan Mechanical feedback MFB: direct current drive, no need for external amplification, simple debugging On-site replaceable pilot filter element: online maintenance in power plants, reducing downtime ISO10372 Size 06 installation surface: fully interchangeable with 017/022/023, suitable for power plant retrofit Typical applications (power industry exclusive) Thermal power: 300MW/600MW/1000MW unit DEH systems, intermediate pressure speed regulating valves (intermediate regulating valves), high-pressure regulating valves (high regulating valves) D122‑034‑017C (MOOG D660 series servo valve dedicated amplifier board, injection molding machine / die-casting machine speed + pressure dual closed-loop control card, European standard rail ±15V) Positioning D122‑034‑017C is a dedicated analog control amplifier card provided by MOOG for the D660 series (D661/D662) two-stage electro-hydraulic servo valves. It is mainly used for multi-stage closed-loop control of injection speed + injection pressure + holding pressure + back pressure in injection molding machines, die-casting machines, and high-pressure forming machines. It is standard equipment for mainstream models such as Haitian / Zhenxiong. Model Disassembly (D122‑034‑017C) D122: MOOG single-axis servo amplifier card series (analog, 160×100mm) 034: Dedicated for D660 valves, injection molding machines / die-casting machines, speed + pressure dual closed-loop 017: Hardware version 17, standard current output ±150mA, with monitoring indicator light C: Industrial grade, coated for three protections, shock-resistant, standard temperature range -20℃ to +60℃ Nuclear power: turbine EH oil system, regulating valve control, high-precision flow regulation Power plants: gas turbine control, bypass valve, main steam valve servo control 72 Series Size 06 power / industrial matrix D072‑559A: 100 L/min / 140 bar / 16 ms / >120 Hz → main force of power plant DEH D072‑017: 95 L/min / 350 bar / 11 ms → industrial standard D072‑022A: 150 L/min / 350 bar / 18 ms → industrial general D072‑023A: 150 L/min / 420 bar / 18 ms → ultra-high pressure D072‑383A‑HP5: 225 L/min / 480 bar / 33 ms → industrial flagship