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Dynex
High Pressure Hydraulics
▲ ▲ ENGINEERING SPECIFICATIONS
Electro-hydraulic Proportional Relief Valves
H8819 SERIES
50 GPM at 15,000 PSI (190 l/min. at 1040 bar) 75 GPM at 9,000 PSI (284 l/min. at 620 bar)
Regulate pressure and protect your circuits with these high pressure relief
valves rated to 50 GPM at 15,000 PSI (190 l/min. at 1040 bar), or 75 GPM at 9,000 PSI (284 l/min. at 620 bar).
Select from models with manual, electric vent or electro-hydraulic control.
ELECTRO-HYDRAULIC CONTROL
Electro-hydraulic models let you remotely control the relief pressure setting, proportional to a variable electrical input signal (0 to 12 VDC).
Patented mechanical position feedback provides closed control-loop accuracy without additional electronic feedback.
SIMPLIFIED CIRCUIT DESIGNS
An electric vent control allows for automatic control of pressure, with an integrally mounted solenoid
valve.
See "How the Valve Works" on page 2.
SPECIAL FLUIDS
These
valves are compatible with conventional fluids or with low-viscosity and other special fluids, including military fluids, Skydrol and other phosphate ester fluids.
This makes them ideal for use on development or production test-stands, aerospace ground support equipment and other applications requiring special fluids.
VALVE SELECTION
The "Sélection Table", below, shows specifications for line connected and manifold mounted models. For complete model number, refer to "Typical Model Code", page 4.
Relief
valves with manual control allow you to simply regulate maximum pressure.
Models with electric vent control are available in either "normally-open" or "normally-closed" configurations.
Electro-hydraulic models provide remote control for infinitely variable pressure settings up to the maximum pressure.
SELECTION TABLE
Model
Rated Pressure
Rated Flow
Mounting
Port Sizes
PSI
bar
GPM
l/min.
Pressure
Tank
Drain
Remote
H8819-7509 H8819-5015
9,000 15,000
620 1040
75 50
284 190
Line Connectée) Line Connectée!
SAE
No. 16 1.38-12 UNF-2B ïhd.®
SAE
No. 24 SAE
No. 24
SAE
No. 6 SAE
No. 6
SAE
No. 6 .56-18 UNF-2B ïhd.®
MH8819-7509 MH8819-5015
9,000 15,000
620 1040
75 50
284 190
Manifold Mounted
Manifold
SAE
No. 24
SAE
No. 6
None
© Pressure port fits Autoclave Medium Pressure, Butech M/P, or equivalent fitting.
® Drain and remote control port fits Autoclave High Pressure, Butech H/P, or equivalent fitting.
