I. Explanation of Model Numbers

D632: D632 series two-stage nozzle flap proportional valve (high pressure, large flow)

107: Flow code 10 = 38 L/min (Δp = 10 bar); 7 = internal pilot + ultra-low leakage + high-frequency response valve core

B: Form A25 installation surface + NBR (nitrile rubber) seal (-20 to +95°C)

Sentence: D632-107B = 38L/min high flow + internal pilot without Y port + A25 large installation surface + NBR standard seal + minimum leakage + highest frequency response + 280 bar high-pressure proportional valve

II. Core Parameters (Δp = 10 bar)

Rated flow: 38 L/min

Maximum pressure: 280 bar

Hysteresis: ≤3% (better than 106B's 5%)

Resolution: ≤0.8%

Zero leakage: ≈0.5 L/min (70 bar) (lowest for D632 series)

Pilot method: internal pilot (without Y port, main oil circuit self-taken)

Sealing / Temperature: NBR (-20 to +95°C)

Coil: 28Ω, ±100mA, 0.14W

Filter: NAS 7 / ISO 4406 15/12

III. D632-107B vs 106B (leakage + dynamic upgrade) Table

Parameters: D632-107B, D632-106B (previous model)

Flow rate: 38 L/min, 38 L/min

Pilot: Internal pilot (without Y port) Internal pilot (without Y port)

Installation surface: A25, A25

Zero leakage: ≈0.5 L/min (minimum) ≈0.8 L/min (low leakage)

Hysteresis: ≤3%, ≤5%

Frequency response: Higher (suitable for rapid cycles) Standard

Applicable: Ultra-energy-saving, high-frequency operation, long-term pressure retention

Conventional low-leakage energy-saving

Sentence: 107B is the "ultimate version" of 106B - with the same flow rate, same internal pilot, and same installation surface, leakage is reduced by 40%+ more, hysteresis is smaller, and the dynamics are faster.

Four. Applicable scenarios (D632-107B)

High flow rate and high pressure + Ultra-energy-saving + High-frequency operation: High-speed presses, precision injection molding, rapid forging

Long-term standby / pressure retention, electricity cost sensitive, seeking the lowest energy consumption

No independent pilot source, simplified oil circuit (without Y port)

Oil temperature ≤ 95℃, ordinary mineral hydraulic oil

A25 large installation surface, high flow rate, high pressure (≤ 280 bar) + Ultra-low leakage + High frequency response