Vickers | F3C5G-825-S87
F3C5G 825 S87
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The F3C5G 825 S87 check valve is manufactured by Vickers for the Check Valves series and is intended to direct one-way flow in hydraulic automation circuits. It tolerates a maximum operating pressure of 210 bar (3000 psi) so it can be placed in high-pressure lines. A nominal flow capacity of 400 l/min (100 US gpm) defines how much fluid can pass through the valve without excessive pressure loss, while the nominal size of 1-1/4 in pipe or tube matches common line diameters in large systems. The cracking pressure is set at 5.2 bar (75 psi), meaning the poppet lifts only after this inlet pressure is reached to prevent backflow. Subplate or manifold mounting simplifies installation by allowing the valve body to sit directly on a machined interface rather than requiring in-line piping.
Four mounting holes secure the F3C5G 825 S87 to the subplate, and each hole uses a .750-10 UNC-2B thread to fit standard bolts. The maximum mounting bolt torque is limited to 95 Nm (70 lbf·ft) so the casting is not overstressed during assembly. A mounting surface finish of 1.6 µm (63 µin) ensures the gasket seats against a smooth face to minimize leakage. Surface flatness must stay within 0.013 mm (0.0005 in) to keep the sealing area uniform under load. A spotface diameter of 30.0 mm (1.18 in) around each port provides clearance for the bolt heads and prevents distortion of the sealing land.
Technical Specifications
Cracking Pressure
5.2 bar (75 psi)
Max Mounting Bolt Torque
95 Nm (70 lbf·ft)
Maximum Operating Pressure
210 bar (3000 psi)
Mounting Bolt Thread
.750-10 UNC-2B
Mounting Holes
4
Mounting Surface Finish
1.6 µm (63 µin)
Mounting Surface Flatness
0.013 mm (0.0005 in)
Mounting Type
Subplate/Manifold Mounted
Nominal Flow Capacity
400 l/min (100 US gpm)
Nominal Size
1-1/4 in pipe/tube
Spotface Diameter
30.0 mm (1.18 in)
1620 Old Apex Road
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