VICKERS-1SE30F35S5-SP5000

Load drift on lift circuits is exactly the kind of problem this valve addresses. It's a pilot-assisted relief with check, which means it holds a load in position and only allows movement when pilot pressure commands it. The 1SE30 series is rated for motion control in harvester applications specifically, and it carries ISO8643 compliance for that use case. At 30 litres per minute pilot flow and a 350 bar pressure ceiling, it's built to manage the forces involved in header lift and similar functions without the instability that causes drift.

For motion control where a load wants to move on its own, this is a pilot-assisted relief valve with a check that’s meant to give good stability while the load is moving. It’s commonly used in mobile and industrial equipment, including harvesters and refuse haulers.