Proportional cartridge relief valve

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Technical specification
s DN 25
Working pressure (MPa) 8, 16,25,31.5
Maximum flow (L/min) 400
Hystersis (%) <±1.5
Repeatability (%) <±2
Rated current (mA) 800
Filtration accurancy (um) ≤20
Hydraulic fluid Mineral oil;phosphate-ester
Viscosity (mm²/s) 2.8~100
Fluid temp (℃) -20~70
Cleanliness
Filter is recommended for the highest fluid pollution degree;the lowest specific filtration resistance according to ISO 4406(c)20/18/15.

The BCY model,a cartridge type proportional relief valve,controls the pressure according to the value of electrical signal input.With a quick response time and good dynamic performances,it is widely used in injection molding machines,blowing machines,die-casting machines and equipment in steel works.





DN A B C D E Fixing screw
BCY-25 85 40 80 168.5 168.5 4-M8
BCY-32 102 50 80 168.5 176 4-M16
BCY-40 125 60 80 168.5 188.5 4-M20
BCY-50 140 68 80 168.5 196 4-M20

Cover installation surface and valve sleeve size
Cover installation surface Cavity size
DN A B C D E F G L M N P R S d1 d2 d3 d4 L1 L2 L3 L4 L5 L6 L7 U W
BCY-25 4 13 29 58 62 58 29 85 M12 6 6 30 8 45 34 25 27 58 72 70 57 30 2.5 2.5 0.03 0.05
BCY-32 6 18 35 70 76 70 35 102 M16 6 8 38 8 60 45 32 38.5 70 85 83 68.5 30 2.5 2.5 0.03 0.1
BCY-40 7.5 19.5 42.5 85 92.5 85 42.5 125 M20 6 10 46 8 75 55 40 54.5 87 105 102 84.5 30 3 3 0.05 0.1
BCY-50 8 20 50 100 108 100 50 140 M20 8 10 46 8 90 68 50 62.5 100 122 117 97.5 35 3 3 0.05 0.1


Cover installation surface and valve sleeve size
Cover installation surface
DN A B C D E F G L M N P R S
BCL-25 4 13 29 58 62 58 29 85 M12 6 6 30 8
BCL-32 6 18 35 70 76 70 35 102 M16 6 8 38 8
BCL-40 7.5 19.5 42.5 85 92.5 85 42.5 125 M20 6 10 46 8
BCL-50 8 20 50 100 108 100 50 140 M20 8 10 46 8

Cover installation surface and valve sleeve size
Cavity size
DN d1 d2 d3 d4 L1 L2 L3 L4 L5 L6 L7 U W
BCY-25 45 34 25 27 58 72 70 57 30 2.5 2.5 0.03 0.05
BCY-32 60 45 32 38.5 70 85 83 68.5 30 2.5 2.5 0.03 0.1
BCY-40 75 55 40 54.5 87 105 102 84.5 30 3 3 0.05 0.1
BCY-50 90 68 50 62.5 100 122 117 97.5 35 3 3 0.05 0.1
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