Moog D680 Series - Size 10 - D685 Proportional Valve

35Rev. C, April 2017
TECHNICAL DATA Moog D680 Series Proportional Control Valves
SIZE 10 - D685 PROPORTIONAL VALVE
35
TECHNICAL DATA
Rev. C, April 2017
Moog D680 Series Proportional Control Valves
SIZE 10 - D685 PROPORTIONAL VALVE
General Technical Data
Technical data and characteristic curves measured with system pressure p
p
of 210 bar (3,000 psi), oil viscosity 32 mm
2
/s
and oil temperature +40 °C (+104 °F).
Valve design 2-stage, with standard spool
Pilot valve D633
unbiased
1)
D633
biased
2)
D633
unbiased
1)
D633
biased
2)
Pilot connection X and Y Internal or external
Mounting pattern ISO 4401-10-09-0-05
Installation position Any
Weight 71.5 kg (157.7 lb)
Weight including fail-safe valve 74 kg (163.2 lb)
Storage temperature range -40 to +80 °C (-40 to +176 °F)
Ambient temperature range -20 to +60 °C (-4 to +140 °F)
Vibration resistance 30 g, 3 axis, 10 Hz to 2 kHz
Shock resistance 50 g, 6 directions
Hydraulic Data
Operating pressure pilot valve
Minimum pressure 10 bar (145 psi) above T or Y
Operating pressure range X port 10 to 350 bar (145 to 5,000 psi)
Maximum pressure Y port
3)
50 bar (725 psi)
Maximum operating pressure of main stage
Port P, A, B 350 bar (5,000 psi)
Port T at Y internal
3)
50 bar (725 psi)
Port T at Y external 350 bar (5,000 psi)
Rated flow at Δp
N
5 bar (75 psi)/spool land 1,000 l/min (264.2 gpm) 1,500 l/min (396.3 gpm)
Maximum flow 3,600 l/min (951 gpm)
Main stage leakage flow (≈ zero lap) 8.0 l/min (2.1 gpm)
Pilot leakage flow 1.4 l/min (0.4 gpm)
Pilot flow for 100 % step 70 l/min
(18.5 gpm)
52 l/min
(13.7 gpm)
70 l/min
(18.5 gpm)
52 l/min
(13.7 gpm)
Hydraulic fluid Hydraulic oil as per DIN 51524 parts 1 to 3 and ISO 11158.
Other fluids upon request.
Temperature range -20 to +80 °C (-4 to +176 °F)
Viscosity range
Recommended viscosity range at 38 °C (100 °F) 15 to 45 mm
2
/s (cSt)
Maximum permissible viscosity range at 38 °C (100 °F) 5 to 400 mm
2
/s (cSt)
Recommended cleanliness class according to ISO 4406
4)
For functional safety 18/15/12
For longer service life 17/14/11
1) Unbiased Pilot Valve for Fail-safe options W
2) Biased Pilot Valve for Fail-safe options D, F, M and U
3) Pressure peaks up to 210 bar (3,000 psi) permissible
4) The cleanliness of the hydraulic fluid strongly affects functional safety (e.g. safe positioning of the spool, high resolution) and wear
of lands (e.g. pressure gain, leak losses).