5/16 STEEL CHECK BALL (Yale YT220165633)

A worn check ball can allow fluid to bypass, reducing system pressure and causing erratic operation. This aftermarket replacement part references the Yale catalog number YT220165633. The check ball is a small, spherical component that seats against a port to permit one-way flow. Its plain mechanical function is to block reverse fluid movement when pressure differential shifts the ball against its seat. A common failure consequence is gradual leakage past the seat, leading to slow or incomplete actuation. The part is made of steel, providing durability under repeated seating impacts. Verify the serial number or application, then call (562) 693-7748.

Part number variants: YT220165633, yt220165633