Cavity T-17A
Series 3
Capacity 60 gpm
Pilot Ratio 4.5:1
Maximum Recommended Load Pressure at Maximum Setting 3850 psi
Maximum Setting 5000 psi
Factory Pressure Settings Established at 2 in³/min.
Maximum Valve Leakage at Reseat 5 drops/min.
Adjustment - No. of CCW Turns from Min. to Max. Setting 3.75
Operating Characteristic Standard
Reseat >85% of sett
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Cavity T-17A
Series 3
Capacity 60 gpm
Pilot Ratio 4.5:1
Maximum Recommended Load Pressure at Maximum Setting 3850 psi
Maximum Setting 5000 psi
Factory Pressure Settings Established at 2 in³/min.
Maximum Valve Leakage at Reseat 5 drops/min.
Adjustment - No. of CCW Turns from Min. to Max. Setting 3.75
Operating Characteristic Standard
Reseat >85% of setting
Valve Hex Size 1 1/4 in.
Valve Installation Torque 150 - 160 lbf ft
Adjustment Screw Internal Hex Size 5/32 in.
Locknut Hex Size 9/16 in.
Locknut Torque 80 - 90 lbf in.
Model Weight 1.36 lb.
Counterbalance valves with pilot assist are meant to control an overrunning load. The check valve allows free flow from the directional valve (port 2) to the load (port 1) while a direct-acting, pilot-assisted relief valve controls flow from port 1 to port 2. Pilot assist at port 3 lowers the effective setting of the relief valve at a rate determined by the pilot ratio.
Other names for this valve include motion control valve and over-center valve.
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