The Ham-Let® H-900HP is a series of relief valves for high pressure service.
The valve is normally closed.
It will open when the system pressure reaches the set level. It will re-close when the system pressure fall below the set level.
Setting and Resealing Pressure
- Upstream set pressure is the first indicator of flow process. Every pressure relief after the first is repeatable within a deviation of 5% at room temperature.
- Blocked upstream set pressure is the first indicator of a stopped flow process and is always lower than the set pressure.
Testing:
- The H-900HP relief valve design has been tested for Proof and Burst.
- Every valve is factory tested for proper set and resealing performance.